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CRUISE REPORT
MARINE GEOLOGICAL CRUISE TO FJORDS IN TROMS AND NORTHERN
NORDLAND, NORWAY
R.V. Johan Ruud 22. -30. 4. 2003
by
Jan Sverre Laberg and
Matthias Forwick
DEPARTMENT OF GEOLOGY
UNIVERSITY OF TROMSØ
N-9037 TROMSØ, NORWAY
2
1. Introduction and scientific objectives
During the RV Johan Ruud cruise from the 22nd to the 30th of April 2003 high-resolution
seismic data was acquired from fjords in Northern Nordland and Troms Counties in Northern
Norway (Figs. 1 and 2, Table 1 and 2). The data will be studied as part of the Norwegian
Research Council-funded SPONCOM project. SPONCOM (Sedimentary Processes and
Palaeo-environment on Northern Continental Margins) is a strategic University project led by
Prof. Tore O. Vorren at the University of Tromsø. In more detail our activities will focus on
three main aspects:
1) The chronology and dynamics of the last glaciation-deglaciation in the Troms-
Lofoten area.
2) Processes and fluxes of fjord, continental shelf and –slope sedimentation.
3) Rapid paleoceanographic and palaeoclimatic changes, during the last glacial
maximum, the last deglaciation and Holocene.
The aims of the new seismic data is to elucidate the chronology and dynamics of the last
glaciation-deglaciation in the Vestfjorden – Ofotfjorden/Tysfjorden area by identifying
possible submarine glacigenic deposits that can be correlated with recessional moraines
previously identified on land, in particular the Skarpnes (Older Dryas) and Tromsø – Lyngen
(Younger Dryas) events (see Andersen, 1975; Olsen 2002). These data will also form the
basis for identifying core sites for an upcoming cruise by RV Jan Mayen (29.5 – 8.6 2003)
where some of the submarine glacigenic deposits will be cored for dating and
sedimentological studies.
The seismic data will also form the basis for identifying the deglaciation and Holocene
sediments in the fjords, their flux and processes of deposition and optimal core sites for
paleoceanographic and paleoclimatic studies.
3
2. Cruise participants
In addition to the regular crew of R/V Johan Ruud under Captain Anfinn Utheim the cruise
participants were:
Leg 1: 22nd – 27th of April
Jan Sverre Laberg, cruise leader, forsker, University of Tromsø
Gaute Mikalsen, forsker, University of Tromsø
Liv Plassen, Post. Doc., University of Tromsø
Steinar Iversen, science engineer, University of Tromsø
Leg 2: 27th – 30th of April
Matthias Forwick, cruise leader, Ph.d. student, University of Tromsø
Raymond Eilertsen, Post. Doc., University of Tromsø
Liv Plassen, Post. Doc., University of Tromsø
Steinar Iversen, science engineer, University of Tromsø
3. Cruise narrative
Tuesday April 22nd: Departure from Tromsø at about 10:00 (local time = GMT + 2:00 hours).
Cloudy and light breeze. Stopped after 0:30 hours for a successful life boat exercise. Then we
sailed for a box corer station in Malangen where we arrived at 12:00. At the position we
collected CTD-data and a bottom water sample, then we used a box corer for sea floor
sediment sampling. We tried three times to get a good sample. Then we sailed for the start of
our first seismic profile in Tjeldsundet (Fig. 1).
Seismic line 03JR270 started in Tjelsundet at about 21:00 and is running through Vestfjorden
ending at Værøy. In the southernmost part of Tjeldsundet and in inner Vestfjorden we are
passing several small sedimentary basins separated by bedrock highs.
4
Wednesday, April 23rd: Partly cloudy, northerly breeze. We continued profiling in
Vestfjorden and the records were of good quality. The profile was oriented parallel but
slightly east of the central fjord axis, in the deepest part of the fjord basin (Fig. 1). The profile
was ended at about 22:00. The profile crossed east of an area in the fjord (at Værøy) where a
moraine ridge previously has been identified. This profile shows that the ridge is not
developed in the deepest part of the fjord basin. Then we had an onboard control of the
sparker and streamer, both were fine and we could prepare for start of the next seismic profile
(03JR271), this time across the fjord at Røsthavet (Fig. 1). The profile recorded several
acoustically transparent units probably comprising till and little overlying late glacial and
Holocene sediments except for in the deepest part of the fjord basin.
Thursday, April 24th: The weather was partly cloudy with breeze from the north in the outer
Vestfjorden, almost no wind further into the fjord. During the night we finished seismic
profile 271 and continued with profile 03JR272, the latter oriented parallel but slightly west
of the central fjord axis (Fig. 1). Also this profile was of good quality. In this area we were
recording several acoustically transparent seismic unit of relatively uniform thickness. These
units are inferred to be dominated by till. There are very little or no draping of late glacial or
Holocene hemipelagic sediments in this area. The next line, 03JR273 was oriented across the
fjord at Henningsvær (Fig. 1) and we reached the end of the line at about 23:00.
Friday, April 25th: A nice sunny day with light northerly breeze. During the night we did two
profiles oriented across the innermost part of Vestfjorden, lines 03JR274 and 275 (Fig. 1).
Both profiles were located across small but deep sedimentary basins. The quality of the data
was good but the recording length of line 275 may have been too low to register the deepest
part of the basin.
5
Then we started a seismic profile from the mouth of Ofotfjorden along the central fjord axis
to the innermost part (Fig. 1). Still using the Multi-electrode sparker and 3.5 kHz we got data
of good quality although noise due to side echoes locally disturbed the recordings. Sailing
into the fjord we crossed several sedimentary basins separated by highs. The highs may be of
bedrock or till origin, separating the two will be an important task for follow up studies. The
next line, 03JR277 is located along the central axis of Rombaken and Rombaksbotn (Fig. 1).
Reaching the end of the line we changed from the Multi-electrode sparker to the Boomer as
our seismic source and ran the same profile, this time sailing out of Rombaksbotn (Fig. 1).
We had some technical problems at the beginning of the line so we had to restart. Technical
problems also caused termination of the line slightly earlier than planned.
Saturday, April 26th: A nice day, partly cloudy with light breeze from the north. Our technical
problems were fixed prior to the start of the next line, 03JR279 running in to Skjomen and
terminating at Elvegård (Fig. 1). Also here we used Boomer as our source and the line was of
very good quality. Then we ran a Boomer and 3.5 kHz profile out of Ofotfjorden, at almost
the same positions as line 276 (Fig. 1). The positions are slightly adjusted to record along the
deepest part of the fjord basin that will register the thickest sediment succession and reduce
noise from side echoes. The line was ended in the afternoon and we sailed for the start
position of the next line, a profile through Tysfjorden ending at Hellemobotn (Fig. 1). Having
passed the fjord mouth we enter into the deepest part of the fjord where the water depth is in
excess of 700 m. The sea floor is almost flat with a thick succession of sediments below.
Sunday, April 27th: A nice and sunny day with almost no wind. We reached Hellemobotn
during the night; the line was terminated at about 04:00. In the inner part of the fjord we
passed several smaller basins separated by highs of till or bedrock origin. Locally side echoes
generated a lot of noise on the recordings. Seismic profile 03JR282, acquired in Gisundet
(Fig. 2), concluded the scientific work during Leg 1 and the vessel returned to Tromsø. After
partly change of the scientific crew (Laberg and Mikalsen disembarked, whereas Eilertsen
and Forwick embarked) and bunkering fresh water, we left Kræmerkaia in Tromsø at 21:30
6
(local time), heading north for Lyngen. The weather was good – almost cloudless, light
breeze, calm sea, c. +4ºC.
Monday, April 28th: We started seismic profiling in Lyngen, west of the island Uløy at 02:54,
continuing data acquisition performed in September 2002. The first profile (profile 03JR283)
was acquired in northern direction along the central axis of outer Lyngen and Fugløysundet
(Fig. 2). It was followed by an E-W transect north of the island Fugløy (profile 03JR284).
After that, we headed south, profiling in Fugløyfjorden (profile 03JR285). During acquisition
of this profile, we faced some technical problems with the streamer, i.e. it stopped data
reception in irregular intervals. This was caused by short circuit between a wire and metal
protection. The problem was solved shortly after appearance. Further problems did not
appear. Data acquisition was continued in southern Fugløyfjorden, along the eastern shore of
Store Skorøya and to Breivikeidet in Ullsfjorden (profile 03JR286). Throughout the rest of
the day, we acquired two additional cross profiles in Ullsfjorden (profiles 03JR287 and
profile 03JR288). In the fjords, the weather was generally good – little clouds, light breeze,
and calm sea. However around Fugløya, wind speed increased in periods to c. 15 m/s, and
waves were up to one meter high. Temperatures varied between c. 0ºC at night and c. 7ºC at
day.
Tuesday, April 29th: During this day, we acquired 19 cross profiles in Ullsfjorden – between
Breivikeidet and the northern tip of the Lyngen Peninsula (profiles 03JR289 to profile
03JR307; Fig. 2). Data acquisition was performed without any problems. However, during
acquisition of profile 03JR297, the boomer snag in a fish gear. We interrupted profiling in
order to remove the gear from the boomer. Data acquisition was continued along the planned
track with profile 03JR297B. Weather conditions during the day were very good. The
sky was almost cloudless, wind speed remained below 10 m/s and the sea was calm.
Temperature varied between about -0.5ºC in the early morning and c. +9.5ºC in the afternoon.
7
Wednesday, April 30th: One final seismic cross line concluded our work in the outer parts of
Ullsfjorden (profile 03JR308; Fig. 2). We steamed to Lyngen again, in order to acquire one
additional profile along the deepest part in the outer fjord (profile 03JR309). Data acquisition
was continued with one profile in Vannsundet (profile 03JR310) and concluded with profile
03JR311 through Langsundet. We arrived at Kræmerkaia in Tromsø at c. 13:00 and unloaded
the vessel. Also during this day, weather conditions were good – little clouds, light breeze,
calm sea and temperatures between -1ºC and +4ºC.
4. Geophysical and geological equipment
4.1. Seismic equipment
4.1.1 Multielectrode sparker (MES) (Figure 3)
The MES consists of 144 electrodes that operates at an energy level of 700 – 800 J. The
sound wave is generated by rapid heating of the electrodes creating a wave that propagates
through the water coloumn and into the underlying sediments. The MES operates to a water
depth up to 700 m.
4.1.2 Boomer (Figure 4)
The Boomer is a system that generates sound waves through electrically induced movement
of metal sheets. The Boomer operates to a water depth of up to 700 m.
4.1.3 Streamer (Figure 5)
A Benthos MESH 25/50P streamer with a total length of 50 m was used. The active part of
the streamer (containing hydrophones) is 7 m long. The sound wave is recorded by the
hydrophones, the signal from each hydrophone is summed and continues to the receiver.
8
4.2 3.5 Hz Echo sounder
3,5 kHz Echosounder records have been acquired simultanously to airgun profiling. The
principal aims are: (1) to image the morphology of the ocean floor and its shallow subbottom
sedimentary layers and structures and (2) to select sediment core stations.
4.3 Onboard analogue and digital recording (see Table 1 and 2 for more details)
Onboard the data were recorded analogue on an EPC 9800 Recorder. In addition, the raw data
was stored on hard disk using a Delph2 recording/processing unit on a Windows-based PC.
4.4 Geological equipment (Figure 6)
The small box corer was used for present day sea floor sediment sampling.
5. Preliminary results
5.1 Vestfjorden-Tysfjorden/Ofotfjorden
In the inner part of Vestfjorden several sediment accumulations with a positive relief on the
present sea floor were identified. Compared with the depth to the sea floor on the distal side,
the innermost sediment accumulation is up to 30 m high (Fig. 7). In cross-section the
uppermost part has an acoustically transparent internal seismic signature; the lower part is
acoustically laminated. On the distal side, dipping internal reflections are seen (Fig. 7). The
next sediment accumulation is up to 40 meter high compared with the depth to the sea floor
on the distal side, the inner seismic signature is mainly acoustically transparent and the distal
front is relatively steeply dipping (Fig. 8). The third accumulation (Fig. 9) shows south-
westward dipping internal reflections and is up to 20 m high.
Well defined sediment accumulations on the present sea floor were also crossed in some of
the inner fjords. The accumulation in Rombaken, in innermost Ofotfjorden, is acoustically
laminated with a steeply dipping distal side and is up to 60 m high (Figure 10). This sediment
accumulation was dated to 9300 +/- 120 14C years BP by Andersen (1975). Preliminary
studies also indicate that there is a similar sediment accumulation across Tysfjorden at
Musken (Fig. 11).
9
So far, no isopack maps showing the late glacial and Holocene sediment thickness in the
studied fjords have been produced. But based on the preliminary results from this cruise the
overall impression is that there is little late glacial glacimarine and Holocene sediments in
Vestfjorden except for some smaller basins in the eastern and innermost parts of the fjord. In
Ofotfjorden and Tysfjorden the thickness is much higher. The reasons for this difference is
not known at present but it may be related to climatic conditions controlling melt water
production, the speed of the ice recession from the area, the number and duration of ice sheet
halts and/or readvances in the fjord basins. To try to answer these questions will be an
important part of our following-up work in the SPONCOM project.
5.2 Fjords north of Tromsø, Troms County
A selection of four seismic profiles (3.5 kHz) is shown representatively for the collected data
during the second leg of the cruise to the fjords north of Tromsø, Troms County (for location
of these sections see fig. 12). The quality of the acquired seismic data is generally good.
However, around the island Fugløy, increased wave activity caused uneven reflection
surfaces.
On most 3.5 kHz profiles, a ghost reflection on the sea bottom occurs (Figs. 13 - 15). This
reflection occurs predominantly on horizontal surfaces and slopes dipping in the moving
direction of the vessel. In single cases, the ghost reflection also occurs on slopes dipping
opposite to the moving direction of the vessel (Fig. 15). A striking fact is that the ghost
reflection appears to be absent in “shallower” areas (compare Fig. 16 with Figs. 13 - 15). The
reason for the occurrence of this ghost reflection is not known. It might be caused by “noise”
from the Boomer.
Two sedimentary environments can be distinguished on the high-resolution seismic profiles.
Whereas thick sediment packages (up to 100 ms) occur in the deeper parts of the fjords (Figs.
13 and 15), sediment cover is rather thin in shallower fjord areas (Fig. 14) and in the sounds
(Fig. 16). However, between irregularities on the seafloor (either basement or boulders?),
limited sediment accumulation occurs (Fig. 16).
10
One coring site with high potential for reconstructing the deglaciation history and
investigating the development of the sedimentary environment was observed close to the
northwestern end of seismic profiles 03JR309 (Fig. 15). At that site, marked reflections that
can be traced over large areas of Ullsfjorden appear close to the sea floor.
6. References
Andersen, B.G. 1975: Glacial geology of Northern Nordland, north Norway. Norges
Geologiske Undersøkelse 320, 1-74.
Olsen, L. 2002: Mid and Late Weichselian, ice-sheet fluctuations northwest of the Svartisen
glacier, Nordland, northern Norway. Norges Geologiske Undesøkelse Bulletin 440, 39-52.
11
12
Fig. 2: Acoustic line map of leg 2 of the cruise.
13
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9317
d48.
3117
:55
68d2
4.86
17d4
9.66
3.5k
Hz
/ Spa
rker
10kW
/ 80
0J3k
Hz/3
00H
z5k
Hz/1
.5kH
z16
012
5/25
0Ea
st /
Righ
t1s
4R
omba
kken
,cou
rsec
hang
e"
03JR
278
19:3
668
d24.
8317
d50.
0719
:45
68d2
4.82
17d4
8.57
Boom
er30
0J50
0Hz
2kHz
150
250
Wes
t / L
eft
1s4
Rom
bakk
en,c
ours
echa
nge,
end
of li
ne"
"19
:45
68d2
4.82
17d4
8.57
20:1
368
d26.
0917
d44.
92Bo
omer
300J
500H
z2k
Hz15
025
0W
est /
Lef
t1s
4R
omba
kken
, end
of l
ine
""
20:1
368
d26.
0917
d44.
9220
:24
68d2
6.53
17d4
3.38
Boom
er30
0J50
0Hz
2kHz
150
250
Wes
t / L
eft
1s4
Rom
bakk
en,c
ours
echa
nge
""
20:2
468
d26.
5317
d43.
3820
:38
68d2
6.43
17d4
1.44
Boom
er30
0J50
0Hz
2kHz
150
250
Wes
t / L
eft
1s4
Rom
bakk
en,c
ours
echa
nge
""
20:3
868
d26.
4317
d41.
4420
:51
68d2
7.05
17d4
0.08
Boom
er30
0J50
0Hz
2kHz
150
250
Wes
t / L
eft
1s4
Rom
bakk
en,c
ours
echa
nge
""
20:5
168
d27.
0517
d40.
0822
:23
68d2
7.58
17d2
3.00
Boom
er30
0J50
0Hz
2kHz
150
250
Wes
t / L
eft
1s4
Rom
bakk
en,c
ours
echa
nge,
end
of li
ne"
03JR
279
23:2
868
d26.
7217
d05.
9401
:12
68d2
1.11
17d1
5.85
3.5k
Hz
/ Boo
mer
7kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
250/
250
Sout
hEas
t / R
ight
1s4
Ofo
ten
26.4
"01
:12
68d2
1.11
17d1
5.85
01:3
368
d19.
6617
d14.
993.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0So
uthE
ast /
Rig
ht1s
4Sk
jom
en, c
ours
echa
nge
""
01:3
368
d19.
6617
d14.
9901
:45
68d1
8.85
17d1
5.54
3.5k
Hz
/ Boo
mer
7kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
250/
250
Sout
hEas
t / R
ight
1s4
Skjo
men
, cou
rsec
hang
e"
"01
:45
68d1
8.85
17d1
5.54
02:3
968
d15.
9617
d22.
943.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0So
uthE
ast /
Rig
ht1s
4Sk
jom
en, c
ours
echa
nge,
end
of l
ine
"03
JR28
005
:22
68d3
1.53
17d3
1.55
06:4
768
d27.
5217
d20.
163.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0W
est /
Lef
t1s
4O
fote
n"
03JR
280B
07:1
368
d27.
6217
d20.
0708
:11
68d2
5.84
17d1
0.32
63.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0W
est /
Lef
t1s
4O
fote
n"
"08
:11
68d2
5.84
17d1
0.32
609
:38
68d2
5.61
16d5
3.97
73.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0W
est /
Lef
t1s
4O
fote
n, c
ours
echa
nge
""
09:3
868
d25.
6116
d53.
977
10:5
068
d26.
308
16d4
0.94
3.5k
Hz
/ Boo
mer
7kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
250/
250
Wes
t / L
eft
1s4
Ofo
ten,
cou
rsec
hang
e"
"10
:50
68d2
6.30
816
d40.
9410
:58
68d2
6.39
16d3
9.26
3.5k
Hz
/ Boo
mer
7kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
250/
250
Wes
t / L
eft
1s4
Ofo
ten,
cou
rsec
hang
e, e
nd o
f lin
e"
03JR
280C
11:1
068
d26.
3516
d40.
109
12:0
268
d25.
4116
d30.
183.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0W
est /
Lef
t1s
4O
fote
n"
"12
:02
68d2
5.41
16d3
0.18
13:4
068
d22.
595
16d1
2.31
3.5k
Hz
/ Boo
mer
7kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
250/
250
Wes
t / L
eft
1s4
Ofo
ten,
cou
rsec
hang
e"
"13
:40
68d2
2.59
516
d12.
3114
:47
68d2
2.69
16d0
0.26
3.5k
Hz
/ Boo
mer
7kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
250/
250
Wes
t / L
eft
1s4
Ofo
ten,
cou
rsec
hang
e, e
nd o
f lin
e"
03JR
281
15:2
968
d20.
9715
d51.
0817
:40
68d1
5.36
716
d07.
749
3.5k
Hz
/ Boo
mer
7kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
250/
250
Sout
h / R
ight
1,5s
4Ty
sfjo
rd"
"17
:40
68d1
5.36
716
d07.
749
19:0
568
d10.
217
16d1
1.80
73.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0So
uth
/ Rig
ht1,
5s4
Tysf
jord
,cou
rsec
hang
e"
"19
:05
68d1
0.21
716
d11.
807
20:1
968
d05.
3516
d09.
763.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0So
uth
/ Rig
ht1,
5s4
Tysf
jord
,cou
rsec
hang
e"
"19
:25
68d0
8.92
16d1
1.24
7x
xx
3.5k
Hz
/ Boo
mer
7kW
/ 30
0J3k
Hz/3
00H
z5k
Hz/2
kHz
150
250/
250
Sout
h / R
ight
1,5s
4Ty
sfjo
rd (1
9:25
low
filter
300
Hz)
""
20:1
968
d05.
3516
d09.
7620
:52
68d0
3.41
16d0
6.76
93.
5kH
z / B
oom
er7k
W /
300J
3kHz
/300
Hz
5kHz
/2kH
z15
025
0/25
0So
uth
/ Rig
ht1,
5s4
Tysf
jord
,cou
rsec
hang
e"
"20
:52
68d0
3.41
16d0
6.76
921
:23
68d0
1.93
916
d10.
296
3.5k
Hz
/ Boo
mer
7kW
/ 30
0J3k
Hz/3
00H
z5k
Hz/2
kHz
150
250/
250
Sout
h / R
ight
1,5s
4Ty
sfjo
rd,c
ours
echa
nge
""
21:0
968
d02.
596
16d0
8.53
xx
x3.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0So
uth
/ Rig
ht1,
5s4
Tysf
jord
(19:
25 lo
wfilt
er 5
00H
z)"
"21
:23
68d0
1.93
916
d10.
296
22:2
567
d58.
216
16d1
4.93
3.5k
Hz
/ Boo
mer
7kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
250/
250
Sout
h / R
ight
1,5s
4Ty
sfjo
rd,c
ours
echa
nge
""
22:2
567
d58.
216
16d1
4.93
23:0
167
d55.
8216
d14.
263.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0So
uth
/ Rig
ht1,
5s4
Tysf
jord
,cou
rsec
hang
e"
"23
:01
67d5
5.82
16d1
4.26
23:2
767
d54.
139
16d1
2.99
3.5k
Hz
/ Boo
mer
7kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
250/
250
Sout
h / R
ight
1,5s
4Ty
sfjo
rd,c
ours
echa
nge
""
23:2
767
d54.
139
16d1
2.99
22:3
467
d53.
7816
d13.
673.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0So
uth
/ Rig
ht1,
5s4
Tysf
jord
,cou
rsec
hang
e"
"22
:34
67d5
3.78
16d1
3.67
23:4
567
d53.
9216
d15.
377
3.5k
Hz
/ Boo
mer
7kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
250/
250
Sout
h / R
ight
1,5s
4Ty
sfjo
rd,c
ours
echa
nge
""
23:4
567
d53.
9216
d15.
377
00:0
467
d53.
1816
d17.
793.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0So
uth
/ Rig
ht1,
5s4
Tysf
jord
,cou
rsec
hang
e"
"00
:04
67d5
3.18
16d1
7.79
00:4
067
d51.
628
16d2
3.82
3.5k
Hz
/ Boo
mer
7kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
250/
250
Sout
h / R
ight
1,5s
4Ty
sfjo
rd,c
ours
echa
nge
27.4
"00
:40
67d5
1.62
816
d23.
8200
:59
67d5
0.31
716
d25.
583.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0So
uth
/ Rig
ht1,
5s4
Tysf
jord
,cou
rsec
hang
e"
"00
:59
67d5
0.31
716
d25.
5801
:05
67d4
9.98
16d2
6.46
73.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0So
uth
/ Rig
ht1,
5s4
Tysf
jord
,cou
rsec
hang
e"
"01
:05
67d4
9.98
16d2
6.46
701
:15
67d4
9.50
916
d28.
113.
5kH
z / B
oom
er7k
W /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
025
0/25
0So
uth
/ Rig
ht1,
5s4
GPS
pos
ition
s m
issin
g"
"01
:17
67d4
9.40
16d2
8.42
01:2
367
d49.
149
16d2
9.60
3.5k
Hz
/ Boo
mer
7kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
250/
250
Sout
h / R
ight
1,5s
4Ty
sfjo
rd,c
ours
echa
nge,
end
of l
ine
Univ
ersi
tete
t i T
rom
sø, I
nstit
utt f
or g
eolo
gi
Tabl
e 1
14
Univ
ersi
tete
t i T
rom
sø, I
nstit
utt f
or g
eolo
giVe
ssel
: Joh
an R
uud
Are
a: G
isun
d; U
llsfjo
rd; L
ynge
nD
ate:
27-
30ap
ril 2
003
Set
tings
for g
raph
ic p
lotte
rD
ate
Prof
ileSt
art
Lat
Lon
Stop
Lat
Lon
Sour
ce1/
Sour
ce2
Ener
gy1/
Filte
r low
Filte
r hig
hLi
neSc
anD
irect
ion/
Shot
Shi
psR
emar
ksno
UTC
ED50
ED50
UTC
ED50
ED50
Ener
gy2
sour
ce1/
2So
urce
1/2
pr in
chm
sSw
eep
dir
rate
ms
spee
d27
.apr
03JR
282
11:4
169
d07.
5317
d36.
6913
:59
69d1
2.27
18d0
0.91
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
249
Nor
thEa
st /
Righ
t75
0G
isun
det
28.4
03JR
283
00:5
469
d53.
5320
d27.
58x
xx
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Nor
th /
Left
800
4Ly
ngen
/ Fu
glysund
""
03:0
670
d01.
7520
d16.
79x
xx
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Nor
th /
Left
800
4C
hang
e 3.
5kH
z fro
m 4
to 2
pul
ses
""
03:1
570
d02.
2920
d16.
07x
xx
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Nor
th /
Left
800
4C
hang
e 3.
5kH
z fro
m 2
to 4
pul
ses
""
03:4
170
d04.
0120
d13.
97x
xx
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Nor
th /
Left
800
4C
ours
echa
nge
""
06:1
470
d16.
1420
d22.
56x
xx
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/3
00H
z5k
Hz/2
kHz
150
125/
250
Nor
th /
Left
800
4C
hang
e Bo
omer
filte
r fro
m 5
00 to
300
""
06:2
570
d15.
1520
d21.
82x
xx
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Nor
th /
Left
800
4C
hang
e Bo
omer
filte
r fro
m 3
00 to
500
""
xx
x07
:19
70d1
8.62
20d2
4.37
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Nor
th /
Left
800
4En
d of
line
"03
JR28
407
:25
70d1
8.63
20d2
4.57
09:1
670
d19.
8620
d02.
353.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0W
est /
Lef
t80
04
Fugl
ysund"
03JR
285
09:2
570
d19.
9220
d02.
4110
:43
70d1
4.73
19d5
8.87
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Sout
h / R
ight
800
4Fu
glyfjord; problems with streamer
"03
JR28
611
:17
70d1
4.86
19d5
7.86
xx
x3.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0So
uth
/ Rig
ht80
04
Fugl
yfjord / Ullsfjord"
"13
:08
70d0
7.98
20d0
8.07
xx
x3.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0So
uth
/ Rig
ht80
04
Cou
rsec
hang
e"
"13
:44
70d0
6.77
20d1
4.53
xx
x3.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0So
uth
/ Rig
ht80
04
Cou
rsec
hang
e"
"15
:08
70d0
1.12
20d1
3.29
xx
x3.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0So
uth
/ Rig
ht80
04
Cou
rsec
hang
e"
"16
:42
69d5
5.56
20d0
2.94
xx
x3.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0So
uth
/ Rig
ht80
04
Cou
rsec
hang
e"
"20
:22
69d4
1.90
19d4
3.41
xx
x3.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0So
uth
/ Rig
ht80
04
Cou
rsec
hang
e"
"x
xx
20:4
269
d40.
5119
d43.
593.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0So
uth
/ Rig
ht80
04
End
of li
ne"
03JR
287
20:5
769
d41.
0419
d45.
7121
:22
69d4
0.99
19d4
0.52
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Wes
t / L
eft
800
4U
llsfjo
rd"
03JR
288
21:3
769
d41.
8219
d40.
5422
:06
69d4
1.78
19d4
6.09
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
East
/ Ri
ght
800
4U
llsfjo
rd29
.403
JR28
922
:22
69d4
2.63
19d4
7.21
22:5
369
d42.
6119
d41.
173.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0W
est /
Lef
t80
04
Ulls
fjord
"03
JR29
023
:08
69d4
3.45
19d4
2.07
23:3
869
d43.
4219
d48.
163.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0Ea
st /
Righ
t80
04
Ulls
fjord
"03
JR29
123
:53
69d4
4.27
19d4
9.91
00:2
869
d44.
2519
d42.
913.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0W
est /
Lef
t80
04
Ulls
fjord
"03
JR29
200
:44
69d4
5.05
19d4
1.23
01:2
769
d45.
1019
d49.
433.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0Ea
st /
Righ
t80
04
Ulls
fjord
"03
JR29
301
:42
69d4
5.99
19d5
0.15
02:1
669
d45.
9819
d42.
943.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0W
est /
Lef
t80
04
Ulls
fjord
"03
JR29
402
:29
69d4
6.74
19d4
3.48
03:1
069
d46.
7419
d51.
283.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0Ea
st /
Righ
t80
04
Ulls
fjord
"03
JR29
503
:30
69d4
7.63
19d5
4.05
04:1
469
d47.
6619
d44.
553.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0W
est /
Lef
t80
04
Ulls
fjord
"03
JR29
604
:26
69d4
8.41
19d4
4.22
05:1
769
d48.
4119
d54.
513.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0Ea
st /
Righ
t80
04
Ulls
fjord
"03
JR29
705
:28
69d4
9.03
19d5
5.38
05:5
969
d49.
1919
d49.
233.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0W
est /
Lef
t80
04
Ulls
fjord
, Boo
mer
sna
g in
fish
ing
gear
"03
JR29
7B06
:07
69d4
9.13
19d4
9.55
06:3
669
d49.
1619
d43.
973.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0W
est /
Lef
t80
04
Ulls
fjord
"03
JR29
807
:02
69d5
0.05
19d3
9.86
08:2
069
d49.
9619
d56.
653.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0Ea
st /
Righ
t80
04-
5U
llsfjo
rd"
03JR
299
08:3
669
d50.
9419
d58.
4210
:01
69d5
0.84
19d3
9.55
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
100/
250
Wes
t / L
eft
800
4-5
Ulls
fjord
"03
JR30
010
:28
69d5
1.60
19d4
4.21
11:4
869
d51.
7120
d02.
623.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
010
0/25
0Ea
st /
Righ
t80
04-
5U
llsfjo
rd"
03JR
301
12:0
069
d52.
4520
d03.
8213
:16
69d5
2.51
19d4
6.14
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Wes
t / L
eft
800
4-5
Ulls
fjord
"03
JR30
213
:26
69d5
3.29
19d4
6.31
14:4
569
d53.
3620
d04.
443.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0Ea
st /
Righ
t80
04-
5U
llsfjo
rd"
03JR
303
14:5
769
d54.
1720
d05.
9016
:16
69d5
4.23
19d4
7.22
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Wes
t / L
eft
800
4-5
Ulls
fjord
"03
JR30
416
:26
69d5
4.98
19d4
7.28
17:4
869
d55.
0420
d06.
183.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0Ea
st /
Righ
t80
04-
5U
llsfjo
rd"
03JR
305
18:0
069
d55.
8120
d06.
7219
:18
69d5
5.81
19d4
8.45
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Wes
t / L
eft
800
4-5
Ulls
fjord
"03
JR30
619
:31
69d5
6.61
19d4
9.95
20:4
969
d56.
6020
d07.
873.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0Ea
st /
Righ
t80
04-
5U
llsfjo
rd"
03JR
307
21:1
569
d57.
5520
d12.
8222
:47
69d5
7.51
19d5
2.20
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Wes
t / R
ight
800
4-5
Ulls
fjord
30.4
03JR
308
23:0
169
d58.
4019
d53.
8700
:31
69d5
8.42
20d1
4.67
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
East
/ Ri
ght
800
4-5
Ulls
fjord
"03
JR30
901
:21
69d5
5.96
20d2
3.98
xx
x3.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0N
orth
/ Le
ft80
04-
5Ly
ngen
/ Fu
glyfjord
""
02:1
870
d00.
4720
d24.
02x
xx
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Nor
th /
Left
800
4-5
Cou
rsec
hang
e"
"x
xx
03:2
770
d04.
2120
d13.
343.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0N
orth
/ Le
ft80
04-
5En
d of
line
"03
JR31
004
:19
70d0
1.63
19d5
9.99
05:5
670
d03.
3219
d37.
033.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0W
est /
Lef
t80
04-
5Va
nnsu
nd"
03JR
311
06:0
270
d03.
6419
d37.
51x
xx
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Sout
h/ R
ight
800
4-5
Lang
sund
""
06:5
170
d00.
0319
d42.
13x
xx
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Sout
h/ R
ight
800
4-5
Cou
rsec
hang
e"
"07
:11
69d5
8.41
19d4
1.20
xx
x3.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0So
uth/
Rig
ht80
04-
5C
ours
echa
nge
""
08:0
369
d55.
6719
d31.
74x
xx
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Sout
h/ R
ight
800
4-5
Cou
rsec
hang
e"
"09
:01
69d5
1.53
19d2
4.48
xx
x3.
5kH
z / B
oom
er10
kW /
300J
3kHz
/500
Hz
5kHz
/2kH
z15
012
5/25
0So
uth/
Rig
ht80
04-
5C
ours
echa
nge
""
xx
x09
:47
69d4
7.87
19d2
1.67
3.5k
Hz
/ Boo
mer
10kW
/ 30
0J3k
Hz/5
00H
z5k
Hz/2
kHz
150
125/
250
Sout
h/ R
ight
800
4-5
End
of li
ne
Tabl
e 2
15
Fig.
3: T
he M
ultie
lect
rode
Spa
rker
use
d on
this
cru
ise.
16
Fig.
4: T
he B
oom
er u
sed
on th
is c
ruis
e.
17
Fig. 5: The Benthos MESH 25/50P streamer.
18
Fig. 6: The Boxcorer.
19
20
21
22
23
24
Fig.12: Location of the seismic sections shown on Figs. 13-16.
25
Fig. 13: Section of seismic profile 03JR294 from inner part of Ullsfjorden. See fig 12 for location.
26
Fig.
14:
Sec
tion
of se
ismic
pro
file
03JR
306
from
the
oute
r par
t of U
llsfjo
rden
. See
Fig
. 12
for l
ocat
ion.
27
Fig. 15: Section of seismic profile 03JR309 from Fugløyfjord. See Fig. 12 for location.
28
Fig.
16:
Sec
tion
of se
ismic
pro
file 0
3JR3
11 fr
om V
anns
unde
t. Se
e Fi
g. 1
2 fo
r loc
atio
n.