Norwegian Polar Institute
Longyearbyen, Norway
Vessel : R/V Lance
Departure: Sortland, Norway, the 13th of March 1998
Arrival: Tromsø, Norway, the
22th of March 1998
As a part of Tasks 1.2.1 and 1.2.2
of the Northeastern Boundaries component of the VEINS programme,
the cruise was conducted by the Norwegian Polar Institute (NPI)
on R/V Lance to take ship-board CTD and ADCP measurements along
a section from Fugløy to Bjørnøya (Leg 1)
and Bjørnøya to Sørkapp (Leg 2) in the western
Barents Sea. This cruise is the third of 13 to be conducted by
NPI on this section over a 3-year period.
Participants:
Kristen Fossan NPI /Tromsø
Elisabeth Engum NPI /Tromsø
Tor Gunnar Solvang NPI/Tromsø
Yoshie Kasajima NPI
/Longyearbyen
Scientific Objectives:
The overall objective of VEINS is to measure and to model the variability of fluxes between the Arctic Ocean and the Atlantic Ocean with a view on implementing a longer term system of critical measurements needed to understand the high-latitude oceans steering role in decadal climate variability. The specific objectives of this cruise are
Cruise Narrative
The R/V Lance left the harbour of
the Norwegian Coast Guard in Sortland at 16:00 LST on the 13th
of March 1998. As the VEINS cruises are conducted together with
Norwegian Coast Guard half of the year, their activities were
performed during the cruise.
The vessel set a course to Sørkapp
and encountered MIZ around 76°
10' N, 16°
59' E at 14:40 UTC on the
15th. The first CTD cast was performed next day at
10:25 UTC, however, because of the heavy ice condition, no CTD
casts were done at the three fixed stations in the north of leg
2 and the first CTD station is between third and fourth fixed
stations from Sørkapp (76°
18' N, 16°
48' E). The CTD observation
was continued until 21:55 UTC at station LA04009 (75°
16' N, 18°
02' E ). The large swell with
strong wind prevented the observation and the vessel headed toward
Bjørnøya to shelter.
The observation restarted early in
the morning on the 20th on the leg 1 section. Due to the bad weather
and activities of Norwegian Coast Guard, leg 2 section was not
completed. The CTD observation was finished at 06:00 UTC on the
21st of March. The R/V Lance kept going sourthward
and the researchers got the vessel off when it passed through
Tromsø on the 22th of March.
Hydrography
29 full depth hydrographic profiles
were carried out along two standard sections, i.e. leg 1: section
between Fugløy and Bjørnøya (Sta. LA04D0029,……LA04D010,
20 stations in all) , leg2: section between Bjørnøya
and Sørkapp( Sta. LA04D009, …LA04D001, 9 stations
in all). The hydrographic work was performed with Neil Brown CTD
mark III. The heavy ice condition and the bad weather caused the
loss of 9 stations on the leg 2 section. Potential temperature
and salinity distribution at each section are shown in Figure
1 and 2.
The large amount of the Arctic Water
appears in the upper layer in the Storfjordrenna (Fig.2). Below
the Arctic Water, the Atlantic Water occupies the middle to bottom
layer. The Atlantic Water is seen in Storfjordrenna throughout
the year while the Arctic Water varies seasonally. In March, the
water originated from Arctic Water can be found even in the south
of Bjørnøya (Fig.1). The Coastal Water, which was
observed near the Norwegian coast November, was disappeared in
March.
| List of CTD stations | |||||
|---|---|---|---|---|---|
| Leg2 | |||||
| Station no. | Date(yymmdd) | UTC | Latitude | Longitude | Depth |
| LA04D001 | 19980316 | 10:25 | 76°17.8'N | 16°48'E | 140 |
| LA04D002 | 19980316 | 11:21 | 76°14.5'N | 16°49'E | 215 |
| LA04D003 | 19980316 | 12:40 | 76°07.8'N | 16°58'E | 300 |
| LA04D004 | 19980316 | 14:15 | 75°59.2'N | 17°08'E | 320 |
| LA04D005 | 19980316 | 15:55 | 75°50.1'N | 17°20'E | 290 |
| LA04D006 | 19980316 | 17:22 | 75°42.0'N | 17°33'E | 210 |
| LA04D007 | 19980316 | 19:05 | 75°32.0'N | 17°43'E | 130 |
| LA04D008 | 19980316 | 20.30 | 75°23.0'N | 17°55'E | 100 |
| LA04D009 | 19980316 | 21:37 | 75°16.0'N | 18°02'E | 63 |
| Leg 1 | |||||
| Station no. | Date(yymmdd) | UTC | Latitude | Longitude | Depth |
| LA04D010 | 19980320 | 02:13 | 74°15.4'N | 19°10'E | 55 |
| LA04D011 | 19980320 | 02:52 | 74°10.0'N | 19°11'E | 68 |
| LA04D012 | 19980320 | 03:59 | 74°00.0'N | 19°14'E | 138 |
| LA04D013 | 19980320 | 05:05 | 73°50.0'N | 19°15'E | 233 |
| LA04D014 | 19980320 | 06:46 | 73°40.0'N | 19°17'E | 344 |
| LA04D015 | 19980320 | 08:00 | 73°30.0'N | 19°19'E | 475 |
| LA04D016 | 19980320 | 09:51 | 73°15.0'N | 19°22'E | 445 |
| LA04D017 | 19980320 | 11:37 | 73°00.0'N | 19°25'E | 412 |
| LA04D018 | 19980320 | 13:22 | 72°45.0'N | 19°28'E | 395 |
| LA04D019 | 19980320 | 15:18 | 72°30.0'N | 19°32'E | 392 |
| LA04D020 | 19980320 | 17:16 | 72°15.0'N | 19°36'E | 320 |
| LA04D021 | 19980320 | 19:00 | 72°00.0'N | 19°39'E | 304 |
| LA04D022 | 19980320 | 20:36 | 71°45.0'N | 19°43'E | 260 |
| LA04D023 | 19980320 | 22:20 | 71°30.0'N | 19°47'E | 229 |
| LA04D024 | 19980320 | 23:34 | 71°20.0'N | 19°49'E | 203 |
| LA04D025 | 19980321 | 00:46 | 71°10.0'N | 19°50'E | 220 |
| LA04D026 | 19980321 | 02:01 | 71°00.0'N | 19°53'E | 190 |
| LA04D027 | 19980321 | 03:16 | 70°50.0'N | 19°55'E | 177 |
| LA04D028 | 19980321 | 04:31 | 70°40.0'N | 19°57'E | 156 |
| LA04D029 | 19980321 | 05:47 | 70°30.0'N | 20°00'E | 125 |