Database for the Lighthouse Norströmsgrund

Database for Ice Measurements at Norströmsgrund 2001

General

The lighthouse was powered up on February 26th, 2001. All systems, load panels, echo sounder, laser scanner and EM-device worked well.
The lighthouse was occupied for about 8 weeks. A team of 2 to 3 scientist, engineers and technicians controlled and maintained the instruments and carried out the measurements. The winter could be classified as a relative mild one.

During the year the following equipment have been used:
- Load panels 1-7 and 9 (panel 9 = 8 segments), placed in the waterline. The panels are mounted to the lighthouse in such a way, that they are facing the drift ice coming from the open sea. Dimensions of the panels are 1.2×1.6 m (four loads cells in the corners per panel, see progress_report.pdf and panel_dimensions.pdf). Note: Panel 3 was frozen and did not give correct loads.
- This arrangement is covering an area of 162 degree, the direction of ice-attack from North to South
South East.
- Four video cameras were used to record the movement of the ice
- The ice drift speed and direction was determined by manual image analysis of the video pictures. A 10x10m grid was marked on the ice, recorded and painted on the video screen. Ice drift speed and direction was determined by following single significant ice features passing the grid lines. A mean speed value was calculated from observed distance and measured time.
- An electric weather station was installed. It measured: the air temperature (indoor and outdoor), the relative humidity (indoor and outdoor), dew point temperature (indoor and outdoor), barometric pressure, wind speed and direction.
- The dynamic structural response was measured with four accelerometers.
- The water stage was measured.

Notations in the data files:
- SumPan1 = The sum of the load from all load cells in each panel (kN).
- Panel 91 = The load for the individual load cells for panel 9, in this case for load cell 1 (of eight). SumPan9 is the total sum for panel 91 to panel 98.
- In a second step the resultant force acting on the lighthouse was computed from the individual total forces of the panels. Because the panels are measuring the normal forces only, these were split into there components referring to a fixed N – E co-ordination system of the lighthouse. Forces induced by ice movement from North towards South, Fx, and East towards West, Fy, are defined positive.

Metrological Data
Meteorological data, Strice_Environmental_Data_2001_4h.xls, were manually sampled, documented in the log-book. Frequency distribution calculations were performed on wind speed and direction as well as ice drift speed and direction. Raw data: Strice_Met_Data_2001.xls Readme_met_data.doc - water stage: Water_stage.xls

Ice charts		Illustration showing the location of load panels mounted on the lighthouse.
The following ice charts are available for the time period: - 010226.PDF - 010227.PDF - 010228.PDF - 010301.PDF - 010302.PDF - 010303.PDF - 010306.PDF - 010307.PDF - 010310.PDF - 010312.PDF - 010313.PDF - 010314.PDF - 010315.PDF - 010316.PDF - 010318.PDF - 010321.PDF	- 010322.PDF - 010323.PDF - 010324.PDF - 010325.PDF - 010326.PDF - 010327.PDF - 010328.PDF - 010329.PDF - 010331.PDF - 010401.PDF -010403.PDF - 010404.PDF - 010405.PDF - 010406.PDF - 010407.PDF - 010408.PDF - 010409.PDF - 010410.PDF
Ice thickness
As described earlier, the ice thickness was determined by: - an echo sounder system located in 6-7 m water depth on the caisson of the lighthouse profiling the subsurface of the ice. - an electromagnetic device and a laser distance meter profiling the surface and the subsurface of the ice. In case of level ice, rafted ice and refrozen broken ice the results of both systems were in good agreement. For hummock ice and pressure ridges the sonar system gives the real subsurface of the ice, consolidated and unconsolidated part, while the ice thickness shown by the EM-device is presenting a value which is less then the subsurface determined by the echo sounder but larger then the consolidated layer. - EM measurements 2001 - Sonar measurements 2001

Pictures have been taken the following dates:

- 2001-03-09	- 2001-03-14	- 2001-03-27	- 2001-04-01	- 2001-04-07
- 2001-03-10	- 2001-03-15	- 2001-03-28	- 2001-04-03	- 2001-04-08
- 2001-03-12	- 2001-03-22	- 2001-03-29	- 2001-04-04	- 2001-04-09
- 2001-03-13	- 2001-03-26	- 2001-03-31	- 2001-04-05

Measured data during the year 2000 has been compiled for the following dates:

Table 1 - Data for the 28th of February	Table 2 - Data for the 1st of March	Table 3 - Data for the 2nd of March	Table 4 - Data for the 3rd of March
Table 5 - Data for the 6th of March	Table 6 - Data for the 7th of March	Table 7 - Data for the 10th of March	Table 8 - Data for the 12th of March
Table 9 - Data for the 13th of March	Table 10 - Data for the 14th of March	Table 11 - Data for the 15th of March	Table 12 - Data for the 16th of March
Table 13 - Data for the 18th of Ma rch	Table 14 - Data for the 21st of March	Table 15 - Data for the 22nd of March	Table 16 - Data for the 23rd of March
Table 17 -Data for the 24th of March	Table 18 - Data for the 27th of March	Table 19 - Data for the 28th of April	Table 20 - Data for the 29th of March
Table 21 - Data for the 31st of March	Table 22 - Data for the 1st of April	Table 23 - Data for the 2nd of April	Table 24 - Data for the 3rd of April
Table 25 - Data for the 4th of April	Table 26 - Data for the 5th of April	Table 27 - Data for the 6th of April	Table 28 - Data for the 7th of April
Table 29 - Data for the 8th of April	Table 30 - Data for the 9th of April	Table 31 - Data for the 10th of April

Table 1 - Data for the 28th of February. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
2802_0100	2001-02-28	7:11	7:55	0.20	level ice	mixed	0.1	N			8.4	20	-18.6	10	lighthouse is shaking a little; see camera 3 for failure; ice thickness is estimation from visual observation
	2001-02-28	7:45	-	-	level ice	mixed	0.08	N	2802_010.txt	-	-	-	-18.4	-	-
	2001-02-28	7:55	-	-	-	-	-	-	-	-	-	-	-	-	synchronized all clocks in PC and Video
2802_0200	2001-02-28	8:00	8:59	-	hummock	crushing	-	N	2802_020.txt	-	-	30	-18.4	10	ridged ice; crushing failure
	2001-02-28	8:08	-	-	-	bending	-	-		-	-	-	-	-	forces are dropping to nearly 0 due to bending failure in ridged ice
2802_0300	2001-02-28	9:00	9:58	-	hummock	mixed	-	-	2802_030.txt	-	-	-	-	10	-
2802_0400	2001-02-28	10:01	10:59	-	level ice unconfined	mixed	-	-	2802_040.txt	-	7.6	25	-18	10	start new force recording
	2001-02-28	10:05	-	-	hummock	crushing	-	N	-	-	-	-	-	-	now confined condition
	2001-02-28	10:09	-	-	-	static	-	-	-	-	-	-	-	-	ice movement stoped
2802_0500	2001-02-28	11:00	11:58	0.45	level ice	crushing	0.25	N	2802_050.txt	-	6.3	22	-17.2	30	start new force recording; ice thickness is estimated from visual observation
	2001-02-28	11:11	-	-	-	-	-	-	-	-	-	-	-	-	release crack
	2001-02-28	11:45	-	-	hummock	crushing	0.13	N	-	-	6	26	-16.8	-	release crack; before good crushing event in level ice
2802_0600	2001-02-28	12:00	12:58	-	level ice	mixed	-	N	2802_060.txt	-	6	20	-17.2	30	start new force recording; release crack in the north
2802_0700	2001-02-28	13:03	13:58	-	level ice	mixed	0.2	N	2802_070.txt	-	6.3	17	-16.6	10	start new force record; unconfined condition
2802_0800	2001-02-28	14:00	-	0.15	level ice	mixed	-	N	2802_080.txt	-	6	23	-16.6	10	start new force record; unconfined condition; ice thickness is an estimation from visual observations
2802_0900	2001-02-28	15:00	17:53	-	level ice	mixed	-	N	2802_090.txt	-	6.2	21	-16.4	10	start new force record; unconfined condition;
2802_1000	2001-02-28	18:05	-	0.17	level ice	bending	0.12	NE	2802_100.txt	-	5.5	30	-15.8	10	start new force record; ice thickness ia an estimation from visual observation

a) Camera 1, 2 and 3, positions see illustraion above.
b) L = Level ice, H= Hummocked ice, R= Ridged ice, CP= Closed pack, FI= Floe ice, OW= Open water, BI=Broken ice, TNI= Thin new ice, FR= Finger raftning, TI=Thin ice, RI= Refrozen ice, LF=Large floes, UI= Uniform ice, U=Unconfined, RC= Release crack, NI= New ice, PU=Pile up, G= Grounded, TLI= thin level ice, RFI=Refrozen broken ice, OC= Open channel
c) C= Crushing, B= Bending, S= Splitting, SL=Static load, M=Mixed, BU= buckling, CR=Creep

Table 2 - Data for the1st of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
	2001-03-01	8:00	-	0.05	level ice	mixed	0.05	N	-	-	6	30	-18.6	-	rubble pile in the north, camera 1
	-	8:10	-	-	-	-	-	-	-	-	-	-	-	-	hummock ice is clearing the pile up; camera 1; no forces on the panels
0103_0010	-	8:15	15:00	-	hummock	mixed	-	-	0103_010.txt	-	5.6	28	-18.4	1	started force recording
	-	10:23	-	1.20	hummock	static	0	-	-	-	5.2	25	-18	-	ice has stopped
	-	11:13	-	-	hummock	mixed	-	-	-	-	-	-	-	-	-
	-	12:17	-	0.18	level ice	bending	0.07	N	-	-	6	22	-18.2	-	slow ice movement;ice thickness is estimated from visual observation; lighthouse is at the edge of old and new ice; see camera 1
	-	12:48	-	-	refrozen mush ice	bending	0.07	NNE	-	-	5.6	24	-17.8	-	thin and weak new ice; very low forces
0103_0020	-	15:42	16:58	-	hummock	mixed	0.1	NE	0103_020.txt	-	5.9	29	-16.2	10	start new force recording;
	-	16:12	-	-	level ice	crushing	0.07	NE	-	-	5.1	36	-16	-	-
0103_0030	-	17:00	17:58	-	hummock	crushing	0.05	NE	0103_030.txt	-	5.8	33	-16	10	start new force recording;
	-	17:28	-	-	-	-	-	-	-	-	-	-	-	-	heavy shaking of lighthouse; appr. 2 Hz
0103_0040	-	18:00	19:58	0.4	level ice	crushing	0.05	NE	0103_040.txt	-	5.2	36	-15.8	10	start new force recording; ice sthickness is an estimation
0103_0050	-	20:00	20:59	0.20	level ice	crushing	0.08	NE	0103_050.txt		5.7	37	-16.2	10	start new force recording; ice thickness is an estimation
0103_0060		21:00	21:58	-	hummock	crushing	0.1	NE	0103_060.txt	-	5.9	40	-16	10	start new force recording;
	-	21:32	-	0.4	level ice	crushing	0.1	NE	-	-	5.7	43	-16	-	-
	-	21:37	-	-	ridge	crushing	-	NE	-	-	-	-	-	-	passing a ridge
	-	21:54	-	-	-	-	-	-	-	-	-	-	-	-	TL-Video tape is full; new tape;passing another ridge; failed by bending see camera 1
	-	21:57	-	-	-	-	-	-	-	-	-	-	-	-	new TL-Tape
0103_0070	-	22:00	22:58	-	hummock	crushing	0.1	NE	0103_070.txt	-	5.3	41	-15.8	30	start new force recording
	-	22:51	-	-	level ice	crushing	-	NE	-	-	-	-	-	-	lighthouse is shaking
0103_0080	-	23:00	23:30	-	ridge	bending	-	NE	0103_080.txt	-	5.4	39	-15.8	30	start new force recording
	-	23:26	-	-	-	-	-	-	-	-	-	-	-	-	ice movement has stopped

Table 3 - Data for the 2nd of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
0203_0100	2001-03-02	0:00	-	-	-	-	0	-	-	-	5.2	35	-16	1	start long term measurement
0203_0200	2001-03-02	7:11	7:58	0.35	level ice	crushing	0.13	NE	0203_020.txt	-	5.5	45	-17.2	30	start new force recording after generator had failed;
0203_0300	2001-03-02	8:00	8:59	0.35	level ice	crushing	0.13	NE	0203_030.txt	-	5.9	45	-17.2	30	start new force recording; thickness is estimated
		8:05	-	-	hummock	crushing	0.13	NE	-	-	-	-	-	-	-
0203_0400	2001-03-02	9:00	9:58	0.25	level ice	crushing	0.18	ENE	0203_040.txt	-	6.8	46	-16.8	30	start new force recording; thickness is estimated
0203_0500	2001-03-02	10:00	11:58	0.30	level ice	crushing	-	ENE	0203_050.txt	-	6.3	47	-16.4	30	start new force recording; thickness is estimated
		10:13	-	0.20	level ice	crushing	-	ENE	-	-	-	-	-	-	thinner level ice; thickness is estimated
		10:43	-	-	level ice	crushing	0.2	ENE	-	-	-	-	-	-	ice is little thicker again; see echo sounder, small ridge
		10:53	-	-	ridge	crushing	-	-	-	-	-	-	-	-	-
		10:54	-	0.40	level ice	crushing	0.2	ENE	-	-	-	-	-	-	only short crushing event in thicker ice, after that bending failure
		10:56	-	0.20	level ice	crushing	0.2	ENE	-	-	-	-	-	-	-
		10:58		0.40	level ice	crushing	0.2	ENE	-	-	7.1	43	-16	-	-
		11:03	-	-	ridge	crushing	0.2	ENE	-	-	-	-	-	-	passing a small ridge
		11:06	-	0.35	level ice	crushing	0.2	ENE	-	-	-	-	-	-	level ice again; ice thickness is an estimation
		11:12	-	0.40	level ice	crushing	0.2	ENE	-	-	-	-	-	-	ice is thicker again
		11:18	-	-	ridge	crushing	0.2	ENE	-	-	-	-	-	-	passing a small ridge
		11:21	-	0.40	level ice	crushing	0.2	ENE	-	-	-	-	-	-	level ice again
		11:23	-	-	ridge	crushing	0.2	ENE	-	-	-	-	-	-	passing a small ridge
		11:30	-	-	hummock	crushing	0.25	ENE	-	-	7.8	47	-15.8	-	passing hummock field
		11:51	-	0.35	level ice	crushing	-	ENE	-	-	-	-	-	-	level ice again; ice thickness is an estimation
0203_0600	2001-03-02	12:00	13:58	0.30	level ice	crushing	0.22	ENE	0203_060.txt	-	8.1	47	-15.8	30	start new force recording; ice thickness is estimated
		12:06	-	-	ridge	crushing	-	ENE	-	-	-	-	-	-	passing a small ridge
		12:15	-	0.30	level ice	crushing	0.25	ENE	-	-	-	-	-	-	ice thickness is estimated
		12:20	-	-	ridge	crushing	0.25	ENE	-	-	-	-	-	-	passing small ridge
		13:24	-	0.40	level ice	crushing	0.25	ENE	-	-	8.7	49	-14.8	-	ice thickness is estimated
		13:29	-	0.30	level ice	crushing	0.25	ENE	-	-	-	-	-	-	ice thickness is estimated
0203_0700	2001-03-02	14:01	15:48	0.30	level ice	crushing	0.25	ENE	0203_070.txt	-	10.1	55	-14.4	30	start new force recording; ice thickness is estimated
		14:03	-	-	hummock	crushing	0.25	ENE	-	-	-	-	-	-	-
		14:11	-	0.35	level ice	crushing	0.25	ENE	-	-	-	-	-	-	ice thickness is estimated
		14:31	-	-	ridge	bending	-	-	-	-	-	-	-	-	force release due to failure while passing ridge
		15:15	-	-	ridge	crushing	0.25	ENE	-	-	-	-	-	-	passing a ridge; high forces
		15:43	-	-	hummock	crushing	0.25	ENE	-	-	-	-	-	-	very thick ice; high consolidation; see segmented panel
0203_0800	2001-03-02	15:50	16:58	-	hummock	crushing	0.25	ENE	0203_080.txt	-	9.8	50	-13.8	30	start new force recording;
0203_0900	2001-03-02	17:15	18:00	-	hummock	crushing	0.25	ENE	0203_090.txt	-	9.5	50	-13	30	start new force recording;
		17:42	-	-	-	-	-	-	-	-	-	-	-	-	grounded pile up in north east leads to load release
0203_1000	2001-03-02	18:01	19:00	-	hummock	crushing	0.33	ENE	0203_100.txt	-	8.5	54	-12.6	30	start new force recording;
		18:06	-	-	-	-	-	-	-	-	-	-	-	-	grounded pile up in north east leads to load release
0203_1100	2001-03-02	20:40	21:52	-	hummock	crushing	0.23	ENE	0203_110.txt	-	7.9	70	-11.8	30	start new force recording;
		20:49	-	-	-	-	-	-	-	-	-	-	-	-	release cracks in the north east

Table 4 - Data for the 3rd of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
0303_0100	2001-03-03	0:00	9:07	-	hummock	static	0	-	0303_010.txt	-	5.8	73	-9.5	1	start long term measurement
0303_0200	2001-03-03	9:10	10:25	0.20	level ice	crushing	0.12	NNE	0303_020.txt	-	7.9	9	-15.2	30	started new force recording
0303_0300	2001-03-03	10:30	12:28	-	hummock	crushing	0.1	N	0303_030.txt	-	-	-	-	30	started new force recording
		11:30	-	-	-	-	-	-	-	-	-	-	-	-	grounded rubble pile in north east; see camera 1
		11:40	-	0.20	level ice	crushing	0.18	N	-	-	-	-	-	-	pile up disappeared
		11:48	-	0.26	level ice	crushing	0.17	N	-	-	7.7	3	-14.2	-	passing a level ice area
		12:02	-	-	level ice	bending	0.17	N	-	-	-	-	-	-	bending failure occured do to old refrozen crack in the ice; see camera 1
		12:05	-	-	-	-	-	-	-	-	-	-	-	-	release crack in the north
0303_0400	2001-03-03	12:33	13:58	0.28	level ice	crushing	-	N	0303_040.txt	-	8.3	351	-14	30	start new force measurement
		12:34	-	0.35	level ice	static	0	N	-	-	-	-	-	-	ice movement stopped
		12:38	-	-	broken floes	-	-	N	-	-	-	-	-	-	-
		12:47	-	0.28	level ice	crushing	0.16	N	-	-	-	-	-	-	confined condition again
		13:38	-	-	broken floes	-	-	-	-	-	-	-	-	-	-
		14:00	-	-	-	-	-	-	-	-	-	-	-	-	unconfined condition due to lot of cracks in the north and new ice behind this, no force measurements

Table 5 - Data for the 6th of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
0603_0100	2001-03-06	4:20	7:59	0.20	level ice	bending	0.03	SSW	0603_010.txt		2.3	200	-6.4	10	start new ice force measurement; slow ice speed; 4 acc + 1 inc is working
0603_0200	2001-03-06	8:01	10:00	0.18	level ice	mixed	0.08	S	0603_020.txt		4.1	168	-8	10	start new ice force recording
0603_0300	2001-03-06	10:02	11:58	-	level ice; unconfined	mixed	0.07	SSW	0603_030.txt	-	4.3	158	-7.8	10	start new ice force recording; ice is partly unconfined
	2001-03-06	10:08	-	-	ridge	-	0	-	-	-	-	-	-	-	ice movement stopped for a while
	2001-03-06	10:12	-	0.02	thin ice	bending	0.09	SSW	-	-	-	-	-	-	passing new thin ice
0603_0400	2001-03-06	13:00	16:00	0.10	level ice	bending	0.08	SSE	0603_040.txt	-	3.6	102	-6.7	10	start new force recording
	2001-03-06	16:00	-	0.10	level ice	-	-	-	-	-	-	-	-	-	ice movement has stopped; stopped force recording
0603_0500	2001-03-06	18:35	19:28	0.10	level ice	bending	0.10	NNE	0603_050.txt	-	6.9	10	-7.1	10	start new force recording
	2001-03-06	19:25	-	0.35	level ice	crushing		NNE	-	-	8.3	6	-8.4	10	-
0603_0600	2001-03-06	19:30	20:28	0.35	level ice	crushing	0.15	NNE	0603_060.txt	-	-	-	-	30	start new force recording; lighthouse is shaking
	2001-03-06	20:16	-	-	ridge	crushing	0.15	NNE	-	-	-	-	-	-	passing a ridge
	2001-03-06	20:25	-	-	level ice	bending	0.15	NNE	-	-	-	-	-	-	-
0603_0700	2001-03-06	20:30	21:28	0.30	level ice	crushing	0.15	NNE	0603_070.txt	-	7	5	-7	30	start new force recording; lighthouse is shaking
	2001-03-06	20:42	-	-	-	-	-	-	-	-	-	-	-	-	force release due to buckling / bending
	2001-03-06	21:10	-	0.22	level ice	crushing	0.15	NNE	-	-	-	-	-	-	-
0603_0800	2001-03-06	21:30	0:00	-	hummock	crushing	0.15	NNE	0603_080.txt	-	6.6	349	-7.3	30	start new force recording

Table 6 - Data for the 7th of March. [TOP]

Event No.

Date

Load Meauring,
time period

Ice
Thickness

Ice
formation

Failure
mode

Ice drift

Load
data

Video

Wind

Air temp.

Sampling
rate

Remark

Start

End

Speed

Direction

Speed

Direction

0703_0100

2001-03-07

0:10

8:20

0.22

level ice

crushing

0.17

0703_010.txt

6.0

331

-8.2

start new force recording

Table 7 - Data for the 10th of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
1003_0100	2001-03-10	8:11	9:58	-	hummock	static, bending	-	E	1003_010.txt	-	4.4	95	-2.9	10	start new force recording; very slow ice movement
		9:45	-	-	hummock	bending	0.05	E	-	-	5.1	115	-2.9	-	-
		9:52	-	-	hummock	bending	0.05	SE	-	-	-	-	-	-	-
1003_0200	2001-03-10	10:01	10:58	-	hummock	bending	0.05	SE	1003_020.txt	-	5	112	-2.7	10	start new force recording; very slow ice movement; unconfined due to broken floes
		10:14	-	-	-	-	-	-	-	-	-	-	-	-	grounded pile up in the SSE; see camera 2
		10:41	-	-	-	-	-	-	-	-	-	-	-	-	grounded pile up in the SSE; see camera 2
1003_0300	2001-03-10	11:00	12:00	-	hummock	bending	0.05	SSE	1003_030.txt		4.5	122	-2.4	10	start new force recording; very slow ice movement; unconfined due to broken floes
		11:09	-	-	-	-	-	-	-	-	-	-	-	-	grounded pile up in the SSE; see camera 2
		11:40	-	-	-	-	-	-	-	-	-	-	-	-	grounded pile up in the SSE; see camera 2
1003_0400		12:01	14:20	-	hummock	bending	0.03	SSE	1003_040.txt	-	3.9	123	-2.2	10	start new force recording; very slow ice movement; unconfined due to pile up in the SSE
		14:20	-	-	hummock	-	-	-	-	-	2.6	133	-2.2	-	stop force recording; no ice movement; pile up in SSE; see camera 2

Table 8 - Data for the 12th of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
	2001-03-12	8:35	-	-	open water	-	0	-	-	-	1.5	360	-4.6	-	open water in North and South; grounded pile up in the South East; see camera 2 and picture
1203_0100	2001-03-12	22:33	23:58	-	hummock	static	0.00	NE	1203_010.txt	-	3.4	54	-4.0	10	start force recording
		23:25	-	-	-	-	-	-	-	-	-	-	-	-	grounded rubble desappears
		23:50	-	0.20	level ice	-	-	NE	-	-	-	-	-	-	no ice contact with lighthouse

Table 9 - Data for the 13th of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
1303_0100	2001-03-13	0:00	10:30	-	open water	-	0.00	-	1303_010.txt	-	3.3	60	-3.3	1	open water in East and South; Start long term measurement
		8:30	-	-	hummock	static	0.00	N	-	-	3.8	58	-9.0	-	release crack in the north
		9:40	-	0.35	level ice	-	0.00	-	-	-	3.7	54	-8.0	-	picture gives an indication abt. the snow thickness
		10:30	-	-	-	-	-	-	-	-	-	-	-	-	zero condition for all sensors
1303_0200	2001-03-13	12:02	13:13	-	hummock	static	0.00	NNE	1303_020.txt	-	7.8	55	-4.5	1	start new long term force recording; unconfined condition due to open water patches
1303_0300	2001-03-13	13:15	14:58	0.40	level ice	mixed	0.08	ENE	1303_030.txt	-	9.3	47	-3.9	10	start new force recording; partly unconfined condition; see video; ice thickness is uncluding snow thickness
		13:24	-	-	-	-	-	-	-	-	-	-	-	-	release cracks in the NE while passing hummock ice
1303_0400	2001-03-13	15:05	16:58	0.30	level ice	mixed	0.20	ENE	1303_040.txt	-	9.6	49	-2.2	10	start new force recording; ice thickness is incl. Snow abt. 5 cm
		16:50	-	0.30	level ice	mixed	0.10	ENE		-	9.4	61	-2.8	10	unconfinement dur to release cracks towards open water patches; ice thickness is incl, snow cover
1303_0500	2001-03-13	17:00	18:00	0.30	level ice	mixed	0.08	E	1303_050.txt	-	9.0	57	-2.9	30	start new force recording; confined conditions are expected soon
1303_0600	2001-03-13	18:02	20:13	0.40	level ice	bending	0.12	E	1303_060.txt	-	10.1	54	-2.7	10	start new force recording; confined conditions; ice thickness incl. Snow thickness
		18:51	-	-	-	crushing	-	-	-	-	-	-	-	-	-
1303_0700	2001-03-13	20:15	21:10	0.40	level ice	crushing	0.10	E	1303_070.txt	-	8.8	36	-3.2	30	start new force recording; confined condtion; lighthouse is shaking; ice thickness is incl. Snow thickness
		20:30	-	-	-	-	-	-	-	-	-	-	-	-	no confinement; after release crack ice floe was splitted
		21:10	-	-	-	-	-	-	-	-	-	-	-	-	stop measurement; unconfined condition
1303_0800	2001-03-13	21:45	23:59	0.40	level ice	mixed	0.20	ENE	1303_080.txt	-	9.2	36	-3.1	30	start new force recording;
		22:07	-	-	-	-	-	-	-	-	-	-	-	-	ice movement stopped

Table 10 - Data for the 14th of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
1403_0100	2001-03-14	0:06	8:32	-	hummock	static	0.00	-	1403_010.txt	-	9.1	25	-4.3	1	start long term recording; open water in the South
		8:32	-	-	open water	-	-	-	-	-	10.1	13	-7.4	-	stopped force measurement
1403_0200	2001-03-14	14:02	14:55	-	hummock	mixed	0.3	NE	1403_020.txt	-	9.9	357	-6.5	30	start new force recording; partly unconfined condition due to release cracks
		14:26	-	-	hummock	crushing	0.28	NE	-	-	-	-	-	-	crushing event
		14:32	-	-	hummock	release crack	0.28	NE	-	-	-	-	-	-	-
		14:39	-	0.27	level ice	crushing	0.3	NE	-	-	-	-	-	-	-
		14:44	-	-	ridge	bending	0.25	NE	-	-	-	-	-	-	-
		14:45	-	-	release crack	-	-	NE	-	-	-	-	-	-	release crack in the North
		14:55	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording; unconfined condition due to open water patches; ice is breaking into floes
1403_0300		17:27	18:31	0.20	level ice	bending	0.20	NE	1403_030.txt	-	-	20	-5.7	10	start new force recording; new young ice; partly unconfined condition due to open water patches
		18:05	-	-	open water	-	-	-	-	-	-	-	-	-	-
		18:31	-	-	open water	-	-	-	-	-	-	10	-5.8	-	stopped force recording

Table 11 - Data for the 15th of Marchl. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
1503_0100	2001-03-15	1:00	8:34	0.03	new level ice	-	0.26	ENE	1503_010.txt	-	8.8	359	-8.7	10	start new force recording, new thin ice; finger rafting
		8:34	-	-	broken floes	-	0.20	NE	-	-	8.2	351	-8.2	-	stopped force recording; broken floes abt. 5-10 m²
		9:20	-	-	broken floes	-	-	-	-	-	-	-	-	-	new tape in TL - recorder
1503_0200	2001-03-15	22:42	23:52	0.15	level ice	mixed	0.22	E	1503_020.txt	-	7.2	68	-3.3	30	start new force recording; new weak ice; ice thickness is incl. Snow of abt 2 cm
		23:49	-	-	unconfined	-	-	-	-	-	-	-	-	-	unconfined condition

Table12 - Data for the 16th of March. [TOP]

Event No.

Date

Load Meauring,
time period

Ice
Thickness

Ice
formation

Failure
mode

Ice drift

Load
data

Video

Wind

Air temp.

Sampling
rate

Remark

Start

End

Speed

Direction

Speed

Direction

1603_0100

2001-03-16

0:00

8:19

0.14

level ice

mixed

0.26

1603_010.txt

7.8

-4.3

start new force recording; partly unconfined condition

8:19

stopped force recording

Table 13 - Data for the 18th of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
1803_0100	2001-03-18	4:14	6:58	0.28	level ice	mixed	0.08	N	1803_010.txt	-	8.8	0	-12.8	10	started new force recording
1803_0200		7:00	-	-	hummock	mixed	0.14	N	1803_020.txt	-	10.5	350	-13.1	10	started new force recording
		7:25	-	-	release crack	-	-	-	-	-	-	-	-	-	release crack in the north
		7:44	7:53	-	open water	-	-	-	-	-	-	-	-	-	open water at he lighthouse; no load on the panels
1803_0300		7:55	10:27	-	release crack	-	0.1	N	1803_030.txt	-	11.1	1	-13.1	10	start new force recording;release crack in NE
1803_0400		10:35	14:55	-	hummock	-	0.14	N	1803_040.txt	-	10.1	349	-10.8	10	start new force recording
		14:55	-	-	-	-	-	-	-	-	11.8	1	-5.5	-	stopped force recording; unconfinded condition
1803_0500		15:08	16:28	0.22	level ice	mixed	0.17	N	1803_050.txt	-	12	2	-5.3	10	start new force recording;partly unconfined

Table 14 - Data for the 21th of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
	2001-03-21	0:00	-	0.10	thin new ice	bending + buckling	0.04	S	-		4.2	149	-9.0	-	ice drift is from the SW and South; thin weak new ice; bending + buckling failure; no force recording
2103_0100	2001-03-21	0:20	8:12	-	-	-	-	-	2103_010.txt	-	-	-	-	1	started long term force recording
		8:12	-	0.20	unconfined	mixed	0.09	SE	-	-	1.3	1	-7.7	-	stopped force recording; broken floes; unconfined condition
2103_0200	2001-03-21	21;25	23:54	-	hummock	static	0	NNE	2103_020.txt		7.3	32	-6.1	1	start force recording; refrozen broken floes
		21:27	-	-	hummock	mixed	0.07	N	-	-	-	-	-	-	ice starts to move

Table 15 - Data for the 22nd of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
2203_0100	2001-03-22	0:00	8:00	0.12	thin new ice	bending + buckling	0.08	NNE	2203_010.txt	-	7.7	24	-8.0	1	ice drift is from the North; thin weak new ice; bending + buckling failure; no force recording
		8:00	-	0.12	refrozen floes	mixed		NNE	-	-	7.8	9	-10.8	-	stopped force recording
2203_0200	2001-03-22	8:07	9:57	0.12	refrozen floes	bending + buckling	0.05	NNE	2203_020.txt	-	-	-	-	10	start new force recording
		8:36	-	0.24	refrozen floes	bending + buckling	0.05	NNE	-	-	8.8	15	-10.5	-	-
2203_0300	2001-03-22	10:06	12:00	0.12	refrozen floes	bending + buckling	0.05	NNE	2203_030.txt	-	8.2	21	-10.2	10	start new force record
		11:07	-	0.4	refrozen floes	bending + buckling	0.07	NNE	-	-	8.4	20	-10	-	-
		11:19	-	0.13	refrozen floes	bending + buckling	0.07	NNE	-	-	-	-	-	-	-
2203_0400	2001-03-22	12:07	14:43	0.30	refrozen floes	mixed	0.07	NNE	2203_040.txt	-	8.8	17	-9.7	10	start new force record
		14:08	-	-	-	-	0.00	-	-	-	6.8	23	-8.3	-	ice movement has stopped
		14:43	-	-	refrozen floes	static	0.00	-	-	-	6.7	24	-7.8	-	stopped force recording

Table 16 - Data for the 23rd of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
	2001-03-23	0:00	-	-	refrozen broken floes	-	0.00	-	-	-	8.6	4	-9.3	-	-
2303_0100		0:10	8:30	-	refrozen broken floes	-	0.00	N	2303_010.txt	-	9.3	8	-9.3	10	started force recording
		8:30	-	-	refrozen broken floes	-	0.00	N	-	-	10.1	352	-10.1	-	stopped force recording
		11:40	-	0.15	level ice	bending + buckling	0.1	NW	-	-	8.9	349	-6.3	-	ice movement from NW; almost no forces on panels

Table 17 - Data for the 24th of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
	2001-03-24	0:00	-	0.14	level ice	bending + buckling	0.03	NW	-	-	7.7	346	-8.3	-	ice drift is from the NW; bending + buckling failure; no force recording
2403_0100	2001-03-24	9:55	0:15	0.15	level ice	bending + buckling	0.00	NW	2403_010.txt	-	7.5	350	-8.2	1	start new forse recording; semi static condition; thermal expension
		12:00	-	0.15	level ice	bending + buckling	0.03	NW	-	-	6.7	349	-5.5	-	ice starts to move from NW ----> SE

Table 18 - Data for the 27th of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
		8:08	-	-	level ice	-	0.00	-	-	-	5.6	1	-13.1	-	stopped force recording; no load on panels
2703_0200	2001-03-27	9:24	13:10	0.25	level ice	buckling + bending	-	N	2703_020.txt	-	4.9	8	-12.9	1	start long term force recording; creep load condition
		12:35	-	0.15	level ice	buckling + bending	-	NE	-	-	3.0	32	-9.5	-	partly unconfined condition; ice drift direction is turning a lot; creep load condition
		13:10	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording; almost no pressure on the lighthouse
		16:40	-	0.25	level ice	-	0.00	-	-	-	1.1	131	-1.5	-	manual ice thickness measurement of T. Kärnä
2703_0300		19:54	21:48	0.60	rafted ice	bending	-	SE	2703_030.txt	-	2.5	177	-7.2	1	ice pressure from SE; creep load condition; started long term force recording
		21:48	-	-	-	-	0.00	-	-	-	2.4	202	-9.4	-	stopped force recording; no ice pressure
		23:05	23:59	0.30	level ice	buckling + bending	0.02	SSE	-	-	2.6	177	-8.4	30	started new force recording; some vibrations; drift direction is changing a lot;

Table 19 - Data for the 28th of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
2803_0100	28:03:00	0:12	0:59	0.20	level ice	bending	0.03	SSE	2803_010.txt	-	3.5	157	-8.0	30	started new force recording;
2803_0200	28:03:00	1:01	7:58	0.17	level ice	bending	0.03	SSE	2803_020.txt	-	4.1	161	-8.1	10	started new force recording
2803_0300	28:03:00	8:03	9:26	0.24	level ice	bending	0.03	SSE	2803_030.txt	-	5.3	201	-6.5	30	started new force recording
2803_0400	2001-03-28	11:10	12:10	0.20	level ice	bending	-	SSE	2803_040.txt		1.0	195	-5.0	30	started new force recording
2803_0500	2001-03-28	12:15	12:58	0.30	rafted ice	bending	-	SE	2803_050.txt	-	0.8	111	-4.8	10	started new force recording; creep load condition
		12:28	-	0.24	level ice	bending	0.04	ESE	-	-	1.0	126	-4.2	-	lighthouse vibrates;
		12:42	-	-	-	-	-	-	-	-	-	-	-	-	started real time video
		12:58	-	-	-	-	-	-	-		-	-	-	-	stpped real time video; stopped force recording
2803_0600	2001-03-28	13:00	15:58	0.24	level ice	bending	0.05	ESE	2803_060.txt		0.0	-	-4.3	30	start force recording
		15:58	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording; no movement
2803_0700	2001-03-28	16:16	19:48	-	rafted	static	-	-	2803_070.txt		2.3	101	-2.3	1	started long term force recording
		23:15	-	-	-	bending	-	SSW	-	-	2.0	191	-7.6	-	new tape in TL-recorder; ice starts to move from SSW; no forces on panels

Table 20 - Data for the 29th of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
	2001-03-29	0:02	-	0.20	level ice	bending	0.03	SSW	-	-	1.8	199	-8.2	-	no load on panels
2903_0100	2001-03-29	9:55	10:40	0.28	refrozen broken floes	bending	0.03	S	2903_010.txt	-	0.0	-	-7.7	10	started force recording; no real confinement; no real forces at panels; floe size abt. 10 to 20 m
		10:09	-	-	-	-	-	-	-	-	-	-	-	-	short crushing period; lighthouse was vibrating
		10:40	-	-	-	-	-	-	-	-	-	-	-	-	stopped measurement; release crack in South
2903_0200	2001-03-29	11:11	11:58	-	hummock	mixed	0.06	S	2903_020.txt	-	0.0	-	-5.9	10	start force measurement; ice starts to move from the South;
		11:29	-	0.40	level ice	bending	0.06	SW	-	-	-	-	-	-	forces only on panel 7 + 2
		11:58	-	-	-	-	-	-	-	-	0.0	-	-5.8	-	stopped force recording; ice movement has stopped
2903_0300	2001-03-29	12:13	13:05	-	level ice partly rafted	bending	-	SW	2903_030.txt	-	3.2	183	-6.3	10	started new force recording; ice starts to move from the South; ice drift direction is turning; no clear direction an d speed can be determined
		12:27	-	0.28	level ice partly rafted	bending	0.08	SSW	-	-	3.1	192	-6.2	-	level ice thickness abt. 28 cm; forces on panel 7 +2
		12:48	-	0.25	-	-	-	-	-	-	-	-	-	-	started real time video; camera 2
		12:55	-	-	level ice	bending	0.09	SSW			3.9	193	-6.5	-	stopped real time recording
		13:05	-	-	unconfined condition	-	-	-	-		4.2	199	-6.5	-	stopped force recording
2903_0400	2001-03-29	16:20	16:58	0.25	level ice	mixed	0.09	SSW	2903_040.txt		2.4	222	-5.8	30	started force recording
		16:33	-	0.45	level ice rafted ice	mixed	0.08	SSW	-	-	-	-	-	-	-
		16:51	-	-	new level ice	-	-	-	-	-	-	-	-	-	ice drift stopped
		16:58	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording
2903_0500		17:30	17:52	0.30	level ice partly rafted	bending	0.08	SSW	2903_050.txt		1.6	204	-2.9	30	start new force recording
		17:43	-	0.55	rafted ice	-	0.00	-	-	-	-	-	-	-	ice movement stopped
2903_0600		17:54	18:16	-	rafted + hummock ice	-	0.02	SW	2903_060.txt		2.3	196	-2.6	30	start new force recording
		18:00	-	0.43	rafted + hummock ice	-	0.00	-	-	-	-	-	-	-	got stock again
2903_0700	2001-03-29	20:12	21:15	1.20	rafted + hummock ice	bending	0.13	SW	2903_070.txt		7.7	210	-3.4	30	start new force recording after ice starts to move
		21:15	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording; almost no forces on panels

Table 21 - Data for the 31st of March. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
	2001-03-31	0:00	-	-	rafted	-	0.00	-	-	-	8.5	216	-0.1	-	no ice movement; no force recording
3103_0100		0:07	8:21	0.45	rafted	-	-	-	3103_010.txt	-	-	-	-	1	started long term force recording
		8:21	-	0.45	rafted	-	0.00	-	-	-	4.2	247	-2.4	-	stopped force recording; no movement or pressure
3103_0200	2001-03-31	11:00	21:00	0.43	rafted	-	0.00	-	3103_020.txt	-	4.3	4	-2.0	1	start new long term force recording
		11:10	-	-	-	-	-	-	-	-	-	-	-	-	start TL-Recording; T. working on the ice, camera 3; real time video with camcorder shows overall ice situation, ridges in the south; T. measured thickness of ice block laying on the concrete basement abt. 30 cm
		21:00	-	-	-	-	-	-	-	-	2.6	181	-2.6	-	stopped force recording; no movement; no pressure; no loads

Table 22 - Data for the 1st of April. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
	2001-04-01	0:00	-	-	rafted	-	0.00	-	-	-	2.9	156	-2.8	-	no ice movement; no ice pressure; no force recording
0104_0100		5:46	6:59	0.45	rafted	mixed, crushing + bending	0.08	S	0104_010.txt	-	5.3	160	0.2	30	ice has started to move from South to North; started force recording; snow;
		6:24	-	0.50	rafted	mixed, crushing + bending	0.11	S	-	-	5.8	159	0.3	-	-
		6:33	-	-	rafted + ridged	crushing	-	SSE	-	-	-	-	-	-	crushing followed by bending; ice drift direction is turning more to SE; see tangential forces on panel 95+ 96
		6:42	-	0.55	rafted + ridged	creep	-	SE	-	-	6.4	164	-	-	ice movement nearly stopped; very small drift speed
		6:55	-	-	-	mixed	-	S	-	-	-	-	-	-	ice starts to move again
0104_0200		7:05	7:33	1.50	rafted + ridged	mixed	0.13	SSE	0104_020.txt	-	6.1	164	0.4	30	started new force recording
		7:15	-	-	ridge	-	-	-	-	-	-	-	-	-	grounded rubble pile in the South
		7:28	-	-	ridge	-	0.00	-	-	-	-	-	-	-	got stock in the ridge
		7:33	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording
0104_0300		7:35	8:55	-	grounded ridge	-	0.00	-	0104_030.txt	-	6.6	185	0.4	1	started long term force recording;
		8:49	-	-	ridge	-	0.11	SSW	-	-	5.9	203	1.0	-	ice starts to move again; grounded rubble is partly taken away
0104_0400		8:56	9:58	-	ridge	-	-	SSW	0104_040.txt	-	5.0	209	1.0	30	Start new force recording; new grounded rubble pile up in the South; only small forces at panel; passing heighest part of ridge, sail height abt. 1.5 to 2 m
		9:21	-	0.40	level ice	crushig	0.11	SSW	-	-	-	-	-	-	mixed mode with quiet long crushing periods; snow thickness abt. 5 cm ; T. measured ice thickness to 35 to 40 cm
		9:33	-	-	-	-	-	-	-	-	-	-	-	-	lighthouse is vibrating a lot; resonance case; semultaneous crushing
		9:36	-	-	-	-	-	-	-	-	-	-	-	-	again strong vibrations; resonance case; semultaneous crushing
		9:42	-	0.35	level ice	creep	0.00	SSW	-	-	8.0	219	1.1	-	ice movement nearly stopped

Table 23 - Data for the 2nd of April. [TOP]

No data.

Table 24 - Data for the3rd of April. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
0304_0100	2001-04-03	0:10	-	0.44	level ice partly unconfined	mixed	0.10	N	-	-	7.8	357	2.1	1	ice drift from North to South, started long term measurement; partly unconfined condition
0304_0200	2001-04-03	0:18	0:59	0.42	level ice	mixed	0.10	N	0304_020.txt	-	8.4	6	1.7	30	started new force recording
0304_0300	2001-04-03	1:00	8:18	0.42	level ice	mixed, mostly bending	0.10	N	0304_030.txt	-	8.9	352	1.2	10	started new force recording; a lot long radial cracks occure; ice drift speed is to low for real crushing
		8:10	-	0.45	hummock	mixed	0.10	ENE	-	-	5.4	20	-3.3	-	after having passed ridged area, rubble pile infront of us is cleaning; getting from hummock ice in level ice again; given ice thickness is level ice
0304_0400		8:20	9:13	0.35	level ice	mixed	0.10	ENE	0304_040.txt	-	6.1	23	-3.5	30	started new force recording;
		8:26	-	-	hummock	mixed	0.10	ENE	-	-	-	-	-	-	passing hummock area again;
		8:32	-	-	ridge	mixed	0.10	ENE	-	-	6.6	22	-3.6	-	passing a ridge; started real time video
		8:40	-	0.37	level ice	bending	0.10	ENE	-	-	-	-	-	-	back in level ice; stopped real time video
		9:01	-	0.27	level ice	bending	0.10	ENE	-	-	-	-	-	-	circon. cracking
0304_0500	2001-04-03	9:15	11:13	0.25	level ice	mixed	0.11	ENE	0304_050.txt	-	4.8	32	-3.8	30	start new force record
		10:28	-	0.27	level ice	bending	0.11	E	-	-	4.8	65	-2.4	-	ice drift direction is changing to E; confined condition
0304_0600		11:15	12:18	0.20	level ice	bending	0.06	E	0304_060.txt		3.8	82	-1.3	30	start new force recording
		11:49	-	-	-	-	-	-	-	-	-	-	-	-	ice movement has nearly stopped for a while
0304_0700		12:20	13:08	0.25	level ice refrozen small floes	bending	0.04	SE	0304_070.txt	-	3.1	121	-0.3	10	very slow ice drift speed; now more from SE
		12:45	-	0.25	refrozen pancake ice	bending	0.08	SE	-	-	2.9	115	0.1	-	-
		12:56	-	-	-	-	-	-	-	-	-	-	-	-	hard vibration before splitting occured; pictures were taken after vibrations; large release cracks are opening
		13:08	-	-	-	-	-	-	-	-	2.3	127	0.3	-	stopped force recording; unconfined condition due to some release cracks
0304_0800	2001-04-03	20:27	21:32	0.40	level ice	static	0.00	90	0304_080.txt	-	5.8	100	-2.2	1	started long term measurement
0304_0900	2001-04-03	21:40	22:15	0.40	level ice	mixed	0.10	90	0304_090.txt	-	7.2	95	-1.8	10	started new force recording
		21:49	-	-	-	-	-	-	-	-	-	-	-	-	unconfined condition due to open water in the north after release crack; ice movement nearly stopped
		22:10	-	-	open water	-	-	-	-	-	-	-	-	-	open water around the lighthouse
		22:15	-	-	open water	-	-	-	-	-	7.9	89	-1.4	-	the ice moving towards the lighthouse has lot of open water patches; unconfined condition are expected; stop force recording

Table 25 - Data for the 4th of April. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
0404_0100	2001-04-04	0:23	1:13	0.35	level ice	mixed	0.16	ESE	0404_010.txt		9.0	92	0.4	10	start new force recording; confined condition now
		0:39	-	0.42	level ice	mixed	0.20	SE	-	-	-	-	-	-	release crack in the East; unconfined condition
0404_0200	2001-04-04	1:15	1:35	0.38	level ice	mixed	0.20	SE	0404_020.txt	-	9.8	110	0.5	10	start new force record; partly unconfined condition; weat snow
		1:20	-	-	ridge	-	0.00	SSE	-	-	-	-	-	-	got stock in ridge
		1:22	-	-	hummock	crushing	0.20	SE	-	-	-	-	-	-	-
		1:26	-	-	-	-	-	-	-	-	9.9	113	0.4	-	rubble pile in the South East
0404_0300	2001-04-04	1:36	2:27	0.45	level ice	crushing	0.20	SE	0404_030.txt		9.6	108	0.4	30	start new force recording
		1:44	-	0.30	level ice	mixed	0.20	SE	-	-	-	-	-	-	thinner ice; failure mode changed
		1:50	-	-	hummock	crushing	0.20	SE	-	-	-	-	-	-	release crack in the East; unconfined condition
		2:04	-	-	ridge	-	-	-	-	-	-	-	-	-	passing a ridge
		2:07	-	1.00	hummock	crushing	0.20	SE	-	-	-	-	-	-	-
		2:20	-	0.95	hummock	crushing	0.20	SE	-	-	-	-	-	-	release crack in the East
0404_0400	2001-04-04	2:30	8:15	0.40	level ice	mixed	0.20	SSE	0404_040.txt	-	8.4	113	0.4	10	start new force record
		-	8:15	-	broken floes	-	0.28	N	-	-	13.3	345	-3.6	-	stopped force recording
0404_0500	2001-04-04	8:32	9:29	0.43	level ice	crushing	0.28	N	0404_050.txt	-	10.6	335	-4.0	30	real crushing failure followed by bending and release crack
		-	-	-	-	-	-	-	-	-	-	-	-	-	still unconfined condition
0404_0600	2001-04-04	9:32	11:07	0.37	level ice	-	0.40	NW	0404_060.txt		9.4	333	-4.3	30	partly unconfined condition
		9:56	-	-	ridge	release crack	-	-	-	-	-	-	-	-	release crack in the North North East
0404_0700	2001-04-04	12:08	12:39	0.20	level ice partly unconfined	mixed	0.25	N	0404_070.txt	-	6.2	341	-4.0	30	-
		12:38	-	-	-	release crack	-	-	-	-	-	-	-	-	release crack in the North; stopped force recording
0404_0800	2001-04-04	13:51	14:47	0.20	level ice partly unconfined	mixed	0.12	NNE	0404_080.txt	-	3.3	315	-3.9	30	unconfined condition due to open water in the East
		13:59	-	0.25	level ice	mixed	0.11	NNE	-	-	-	-	-	-	now confined condition; diameter of floe abt. 500m
		14:12	-	0.17	level ice	mixed	0.10	NNE	-	-	-	-	-	-	weak ice; this ice is creating nearly no force
		14:47	-	-	-	-	-	-	-	-	2.6	319	-3.4	-	stopped force recording; no confinement due to release crack in the North; after this floe there is a area of broken ice, floe size abt. 20m; snow and bad visibility
0404_0900		16:12	17:30	0.30	level ice	static	0.00	ENE	0404_090.txt	-	1.8	83	-1.5	10	start new force record; static load from NE direction
		16:16	-	-	-	-	-	-	-	-	-	-	-	-	release crack in SE
		16:42	-	0.15	level ice	bending	0.05	E	-	-	1.6	89	-0.3	-	release crack in SE
		17:19	-	0.20	level ice	release crack	0.10	SE	-	-	2.2	99	-1.6	-	release crack in SE
		17:30	-	-	-	-	-	-	-	-	-	-	-	-	stopped measurement; no confinement due to cracks and open water patches
0404_1000	2001-04-04	21:53	22:18	0.32	level ice	mixed	-	SE	0404_100.txt		4.5	101	-4.0	10	ice movement from SE; partly unconfined;start force recording
		22:00	-	-	-	-	-	-	-	-	-	-	-	-	ice movement stopped after release crack occured in the East
		22:18	-	-	-	-	-	-	-	-	-	-	-	-	unconfined condition; to much open water; stopped measurement

Table 26 - Data for the 5th of April. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
0504_0100	2001-04-05	0:07	7:20	0.01	new ice	rafting	-	SE	0504_010.txt	-	6.1	92	-4.1	10	started force recording
		7:16	-	0.32	level ice	mixed	0.12	S	-	-	4.7	172	-2.5	-	-
		07:20	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording
0504_0200	2001-04-05	7:41	9:21	0.27	level ice	mixed	0.12	E	0504_020.txt	-	2.5	185	-1.9	30	start new force measurement
		9:11	-	-	hummock	static	0.00	E			3.8	172	0.8	-	static load condition
		9:17	-	-	-	-	-	-	-	-	-	-	-	-	ice starts to move again;
		9:21	-	-	-	-	-	-	-	-	-	-	-	-	stopped measurement; unconfined condition due to open water parches in the South and East
0504_0300	2001-04-05	9:53	11:47	0.42	level ice	static	0.00	SE	0504_030.txt	-	6.6	178	1.3	30	static pressure in South East
		10:04	-	-	-	-	-	-	-	-	-	-	-	-	ice starts to move from the South
		10:09	-	-	-	-	-	-	-	-	-	-	-	-	release crack in the East; partly unconfined condition
		11:10	-	-	hummock	mixed	0.19	S	-	-	5.9	180	2.4	-	passing hummock ice
		11:13	-	-	ridge	static	0.00	S	-	-	-	-	-	-	got stock in ridge
		11:47	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording
	2001-04-05	-	-	0.30	level ice		0.02	S	-	-	5.1	149	2.6	-	-
0504_0400	2001-04-05	15:28	16:30	0.40	level ice	mixed with long crushing periods	0.11	SE	0504_040.txt	-	7.5	134	3.6	30	ice starts to interact with lighthouse; size of floe 500x800 m; lighthouse is shaking
		15:41	-	1.00	hummock	crushing	0.15	SE	-	-	-	-	-	-	-
		15:46	-	1.00	rafted	crushing	-	SE	-	-	-	-	-	-	-
		15:48	-	-	-	-	-	-	-	-	-	-	-	-	very strong vibrations; resonance for some seconds; short before very hight loads with deloading; a bang was observed
		15:50	-	1.00	-	-	0.00	-	-	-	-	-	-	-	ice movement has stopped
		15:54	-	1.00	rafted	static	0.00	SE	-	-	8.6	139	4.2	-	-
		16:30	-	-	-	-	-	-	-	-	-	-	-	-	release crack in SSE; stopped force recording
0504_0500	2001-04-05	18:38	19:15	1.20	rafted ice	crushing	0.17	SSE	0504_050.txt	-	-	-	-	100	start new force record; first part unconfined condition
		18:43	-	-	-	-	-	-	-	-	-	-	-	-	release crack in South East
		18:45	-	-	-	-	-	-	-	-	9.2	148	2.4	-	started real time video
		18:47	-	-	-	-	-	-	-	-	-	-	-	-	release crack in the South East
		18:50	-	0.70	-	mixed	-	SSE	-	-	-	-	-	-	release crack in SE
		18:52	-	0.40	level ice	mixed	0.13	SSE	-	-	-	-	-	-	release crack in SE
		19:00:20	-	0.40	level ice	mixed	-	-	-	-	-	-	-	-	new RT Video tape
		19:04	-	-	-	-	-	-	-	-	-	-	-	-	strong vibration; no resonance
		19:09	-	-	-	-	-	-	-	-	-	-	-	-	stopped RT Video
		19:15	-	-	-	-	0.00	-	-	-	-	-	-	-	ice movement stopped; stopped force recording
0504_0600	2001-04-05	19:56	21:20	2.20	hummock ice	crushing	0.13	SSE	0504_060.txt	-	8.8	150	2.3	30	started new force recording
		20:10	-	-	release crack	-	-	-	-	-	-	-	-	-	-
		21:10	-	3.30	ridge	static	0.00	E			10.8	146	2.2	-	got stock in a large ridge
		21:16	-	-	-	-	0.21	S	-	-	-	-	-	-	ice starts to move again; unconfined condition due to open water in the South
		21:20	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording
0504_0700	2001-04-05	21:30	22:16	0.60	level + hummock ice	mixed	0.17	SSE	0504_070.txt		11.4	151	2.4	30	start new force recording; at the beginning partly unconfined condition
		21:35	-	0.40	release crack	-	0.17	-	-	-	-	-	-	-	release crack in South East
		21:42	-	-	-	-	-	-	-	-	-	-	-	-	no real confinement anymore
		22:16	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording; to much unconfinement
0504_0800		22:29	23:42	-	hummock ice	static	0.00	SSE	0504_080.txt		8.8	194	2.7	30	start new force recording;
		22:32	-	0.35	-	mixed	0.13	S	-	-	-	-	-	-	-
		22:52	-	-	broken floes	-	0.12	SSW	-	-	8.9	185	2.5	-	unconfined condition the last 15 min.
		22:55	-	-	hummock ice	mixed	0.13	SSW	-	-	-	-	-	-	-
		22:58	-	-	release crack	-	-	-	-	-	-	-	-	-	release crack in the East
		23:15	-	0.75	hummock ice	mixed	0.00	S			8.3	183	2.3	-	ice movement nearly stopped
		23:20	-	0.77	hummock ice	mixed	0.10	SSW	-	-	-	-	-	-	ice starts to move again
		23:24	-	-	-	-	-	-	-	-	-	-	-	-	ice wedge in the South
		23:26	-	1.30	ridge	static	0.00	SSW	-	-	-	-	-	-	got stock in a ridge
		23:31	-	-	-	-	-	-	-	-	-	-	-	-	ice floe is splitted and moves tangential to the lighthouse
		23:35	-	0.55	rafted ice	-	0.13	SSW	-	-	-	-	-	-
		23:39	-	-	-	-	-	-	-	-	-	-	-	-	ice floe is splitting
		23:42	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording
0504_0900	2001-04-05	23:50	-	0.37	level ice refrozen floes	mixed	0.10	S	0504_090.txt	-	-	-	-	-	start new force record

Table 27 - Data for the 6th of April. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
0504_0900	2001-04-06	0:10	0:58	0.35	level ice	mixed	0.10	SSW			7.6	182	2.0	30	Continuation of force recording from 05.04.2001 23:50
0604_0100	2001-04-06	1:00	7:20	0.35	level ice	mixed	0.14	SSW	0604_010.txt		8.2	189	2.0	10	start new force recording
		1:04	-	0.70	hummock	crushing	0.14	SSW	-	-	-	-	-	-	passing hummock ice area
		7:18	-	0.85	rafted ice	-	0.00	SSW			11.0	2.12	1.2	-	ice movement stopped
		7:20	-	-	-	-	-	-	-	-	-	-	-	-	stopped measurement
0604_0200	2001-04-06	9:55	10:55	0.65	rafted	crushing	-	SSW	0604_020.txt		12.2	210	1.2	30	start force recording
		10:00	-	0.60	rafted	creep	-	-	-	-	-	-	-	-	started real time video; ice movement nearly stopped
		10:16	-	-	-	-	-	-	-	-	-	-	-	-	stopped real time video; no action
		10:42	-	-	-	-	-	-			13.1	207	1.7	-	ice starts to move again; and stopped again
		10:48	-	-	ice floes	-	0.10	SSW	-	-	-	-	-	-	ice is moving; unconfined condition
		10:55	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording
0604_0300	2001-04-06	11:30	12:57	0.30	level ice	mixed	0.10	SW			13.8	210	1.4	30	start new force recording, only panel 7,2,8,9 + Acc + Inc
		11:45	-	0.70	rafted ice	crushing	0.10	SW	-	-	-	-	-	-	-
		11:49	-	1.00	rafted ice	mixed	-	-	-	-	-	-	-	-	-
		12:57	-	-	open water	-	-	-	-	-	15.9	202	1.8	-	open water at lighthouse for a short period; took new zero
0604_0400	2001-04-06	14:06	16:34	-	unconfined	-	-	SW	-	-	15.7	211	1.7	30	ice starts to move; started force recording

Table 28 - Data for the 7th of April. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
0704_0100	2001-04-07	0:33	5:35	0.80	rafted	-	0.00	292	0704_010.txt	-	7.2	253	1.5	1	no ice movement; start long term force recording
		5:35	-	-	-	-	-	-	-	-	5.1	275	-0.2	-	stopped force recording
		16:50	-	-	-	-	-	-	-	-	1.9	119	3.9	-	new tape in TL-Recorder; rafted ice in the West and open water in the East of the lighthouse
		22:11	-	-	open water	-	0.00	-	-	-	3.2	56	1.2	-	wind is changing to North East; snow
0704_0200	2001-04-07	22:39	23:58	0.55	rafted ice	first impact; static	0.08	NE	0704_020.txt	-	3.5	57	1.3	10	rafted ice impact to the lighthouse with abt. 0.08 m/s, after stop semi static condition
		23:30	-	0.35	level ice	static	0.00	NE	-	-	3.5	44	0.4	-	T. measured the ice thickness of the floe in the contact area to 35 cm

Table 29 - Data for the 8th of April. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
0804_0100	2001-04-08	0:03	7:57	0.35	level ice	static	0.00	NE	0804_010.txt	-	3.9	41	0.2	10	static load condition; ice pressure from NE; snow
		7:10	-	0.35	level ice	mixed	0.16	ENE		-	8.1	41	-0.1	-	weak ice
		7:28	-	0.35	level ice	mixed, crushing and bending	-	-	-	-	-	-	-	-	started real time video, camera 3
		7:34	-	-	-	-	-	-	-	-	-	-	-	-	camera 3, less zoom
		7:35	-	-	-	-	-	-	-	-	-	-	-	-	crack in the East
		7:36	-	-	-	-	-	-	-	-	-	-	-	-	camera 1; release crack is opening; no confinement
		7:39	-	-	-	-	-	-	-	-	-	-	-	-	stopped real time video
		7:41	-	1.40	rafted	static	0.00	ENE	-	-	7.3	NE	-0.1	-	ice movement stopped; second release crack in the north; static load condition but unconfined
		7:50	-	-	-	-	-	-	-	-	-	-	-	-	new crack is deviding the remaining flow in the NE
		7:57	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording
0804_0200	2001-04-08	8:00	9:40	-	floe ice	-	0.17	ENE	0804_020.txt	-	6.8	45	0.0	10	start new force recording
		8:02	-	0.40	large floe	-	-	-	-	-	-	-	-	-	large floe is splitting; unconfined condition due to too much open water in the vicinity
		8:06	-	2.00	ridge	-	-	ENE	-	-	-	-	-	-	release crack towards the south;
		8:10	-	2.20	ridge	static	0.00	ENE	-	-	-	-	-	-	ice movement stopped
		8:18	-	-	ridge	-	-	-	-	-	-	-	-	-	a new crack splitted the floe; remaining part slowly disappears to wards NW
		8:50	-	0.45	level ice	mixed	-	E	-	-	7.5	34	0.1	-	started real time video, first camera 1; second camera 2 to show the failure process in real time
		9:04	-	0.52	level ice	mixed	-	-	-	-	-	-	-	-	crushing failure an d bending failure in a mix; crushing gets more and more dominant
		9:11	-	0.45	level ice	mixed	0.13	E	-	-	-	-	-	-	-
		9:13	-	0.55	hummock ice	mixed	0.13	E	-	-	6.4	34	0.1	-	-
		9:14	-	0.45	level ice	mixed	-	E	-	-	-	-	-	-	mixed mode with longer crushing periods
		9:17	-	-	-	-	-	-	-	-	-	-	-	-	radial crack occures
		9:20	-	0.47	level ice	mixed	0.13	ENE	-	-	-	-	-	-	-
		9:23	-	0.52	-	mixed	0.14	ENE	-	-	-	-	-	-	stopped real time video
		9:27	-	0.68	rafted ice	mixed	-	-	-	-	-	-	-	-	heading a rafted ice area
		9:35	-	1.20	hummock	-	-	ENE	-	-	-	-	-	-	release crack, unconfined condition
		9:40	-	-	-	-	-	-	-	-	-	-	-	-	unconfined condition stop force measurement
0804_0300	2001-04-08	22:08	23:55	0.55	rafted	static	0.00	E	0804_030.txt		6.2	57	0.7	10	started new force recording; rain
		22:14	-	0.75	rafted; unconfined	-	0.10	NE	-	-	-	-	-	-	ice starts to move; unconfined condition, open water in the NE and North; ice edge is sliding along the lighthouse see camera 2
		22:26	-	-	rafted; unconfined	static	0.00	ENE	-	-	-	-	-	-	ice is sliding again after a period of static load
		22:35	-	1.95	rafted; unconfined	crushing	-	E	-	-	-	-	-	-	unconfined condition due to open water in the NE and NO; release crack i the North East
		22:42	-	0.40	level ice	mixed	0.12	E	-	-	5.1	61	0.7	-	now confined condition; bending failure is dominant; weak ice
		22:51	-	0.40	level ice	mixed	0.10	E	-	-	-	-	-	-	-
		22:56	-	1.10	rafted	mixed	-	E	-	-	-	-	-	-	-
		23:00	-	2.10	ridge	mixed	0.08	E	-	-	-	-	-	-	passing a ridge in " head on " condition ( ridge sail parallel to ice moving direction)
		23:02	-	-	ridge	release crack	-	-	-	-	-	-	-	-	release crack in NE; after this crack unconfined condition
		23:07	-	-	ridge	release crack	-	-	-	-	-	-	-	-	new release crack in NE; after the crack unconfined condition due to open water in NE
		23:11	-	0.70	rafted ice	release crack	0.09	E	-	-	-	-	-	-	new release crack in NE
		23:17	-	0.55	rafted ice	mixed	0.09	E	-	-	-	-	-	-	confined condition
		23:24	-	1.50	hummock	mixed	0.09	E	-	-	-	-	-	-	passing hummock ice
		23:27	-	2.00	hummock	release crack	0.09	E	-	-	-	-	-	-	loosing confinement in the South
		23:32	-	-	-	-	-	-	-	-	-	-	-	-	ice is sliding along the lighthouse in the NE
		23:37	-	0.35	level ice	mixed	0.10	E	-	-	-	-	-	-	unconfined condition, open water in E and S
		23:51	-	0.40	level ice	mixed	-	-	-	-	-	-	-	-	unconfined condition due to open water in SE
		23:55	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording

Table 30 - Data for the 9th of April. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
0904_0100	2001-04-09	0:03	8:15	0.33	level ice	mixed	0.10	E	0904_010.txt		4.4	68	0.9	10	started new force recording; fog; unconfined condition
		8:15	-	-	-	-	-	-			7.4	122	1.7	-	stopped measurement
0904_0200	2001-04-09	8:16	10:10	0.70	rafted ice	mixed	0.13	S	0904_020.txt	-	-	-	-	-	started new force recording; unconfined condition
		8:35	-	1.00	ridge	mixed	-	S	-	-	6.3	153	1.7	-	passing ridged ice in head on condition; ice flow is splitted, ice floe in the south stopped, ice floe in the East is passing by, see camera 2
		9:34	-	-	-	-	-	-	-	-	8.0	174	2.1	-	small wedge in the south is splitting the ice; small rain
		9:37	-	-	rafted ice	mixed	0.15	SSW	-	-	-	-	-	-	-
		9:45	-	-	-	-	-	-	-	-	-	-	-	-	release crack in the South
		10:04	-	-	hummock ice	mixed	-	SSW	-	-	7.8	196	2.1	-	ice wedge in the South; rain
		10:09	-	-	-	-	0.00	-	-	-	-	-	-	-	ice movement stopped
		10:10	-	-	ridge	static	-	-	-	-	-	-	-	-	stopped force recording; no real forces on the panels since abt 1/2h
0904_0300	2001-04-09	14:23	18:16	0.60	rafted ice	crushing	-	S	0904_030.txt		9.4	202	1.4	10	start new force recording
		14:27	-	-	-	-	-	-	-	-	-	-	-	-	passing a ridge in head on condition
		14:31	-	-	-	release crack	-	-	-	-	-	-	-	-	release crack in SE
		16:14	-	2.60	ridge	crushing	0.07	SSW	-	-	9.8	206	1.0	-	ice wedge in the SSE
		18:05	-	-	-	-	-	-	-	-	-	-	-	-	high load during semi static event at panel 7
		18:16	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording; ice drift direction gives no forces on panels anymore
0904_0400	2001-04-09	22:35	23:14	-	rafted + hummock ice	-	0.10	W	0904_040.txt	-	-	-	-	30	strong resonance vibration
		22:40	-	-	-	-	-	-	-	-	-	-	-	-	-
		22:43	-	0.68	rafted ice	crushing	0.10	NW	-	-	6.7	295	-0.4	-	-
		23:03	-	2.30	ridge	crushig	0.10	NW	-	-	-	-	-	-	passing a ridge
0904_0500	2001-04-09	23:15	23:48	1.90	rafted ice	crushing	0.10	NW	0904_050.txt		6.9	291	-0.8	30	start new force recording
		23:19	-	1.50	broken floes	crushing	0.10	NW	-	-	-	-	-	-	-
		23:22	-	0.70	rafted ice	mixed	0.10	NW	-	-	-	-	-	-	-
		23:32	-	1.70	hummock ice	crushing	-	-	-	-	-	-	-	-	real time video stopped; going parallel to a ridge sail
		23:36	-	2.10	hummock	crushing	0.00	NW	-	-	8.5	295	-0.9	-	ice movement stopped due to release crack in the North and in the West; crack is opening
		23:48	-	-	-	-	-	-	-	-	-	-	-	-	stopped force recording

Table 31 - Data for the 10th of April. [TOP]

Event No.	Date	Load Meauring, time period		Ice Thickness	Ice formation	Failure mode	Ice drift		Load data	Video	Wind		Air temp.	Sampling rate	Remark
		Start	End		b)	c)	Speed	Direction		a)	Speed	Direction
1004_0100	2001-04-10	0:05	8:30	-	open water	-	-	-	1004_010.txt	-	7.0	295	-0.9	10	start new force recording
		8:22	-	0.38	level ice	mixed	0.20	NW	-	-	8.7	318	-1.0	-	-
		8:30	-	-	-	-	-	-	-	-	-	-	-	-	unconfined condition; stopped measurement
		14:20	-	-	-	-	-	-	-	-	-	-	-	-	stopped TL-video;