FRV Scotia 0607S

Cruise summary report

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Cruise Info.

Ship name (ship code)

FRV Scotia (748S)

Cruise identifier

0607S

Cruise period

2007-04-27 — 2007-05-16

Status

Completed

Port of departure

Aberdeen, United Kingdom

Port of return

Aberdeen, United Kingdom

Purpose

Research

Objectives

Objectives

1. To perform hydrographic surveys along the JONSIS standard section in the northern North Sea.
2. To perform hydrographic surveys along the standard Faroe Shetland Channel sections.
3. To service two ADCP moorings in the Faroe Shetland Channel.
4. To recover and redeploy two current meter moorings E of Shetland.
5. To perform CTD hydrographic surveys E of Shetland.
6. To take core samples for deep sea sediment carbon cycling in the Faroe Shetland Channel
7. To carry out CTD hydrographic survey across the Anton Dohrn Seamoun and in the Wyville-Thomson ridge area.
8. To deploy an ADCP mooring on the Wyville-Thomson Ridge.
9. To carry out deepwater trawling during the spawning season at Anton Dohrn Seamount, east of the Rockall Plateau, the shelf edge and Rockall Bank.

Narrative

Scotia sailed from Aberdeen at 1000 (all times are GMT) on Friday 27 April for the start of the JONSIS standard section. On route a test dip of the 911+ CTD was performed. CTD measurements and water sampling commenced at 2232 on Friday 27 April. The line was completed at 0934 on Saturday 28 April (Stns.130-141).

Scotia then made passage to the start of the most southerly (60 0.00'N) of three CTD lines, East of Shetland 1. Work commenced at 1632 on Saturday 28 April and was completed at 0508 on Sunday 29 April (Stns.142-153). Scotia proceeded to the start of the CTD line East of Shetland 2 and worked commenced at 0852. CTD stations were worked until 1042 on Sunday 29 April up to the inner most mooring East Shetland 1 (60 34.43'N 000 38.13'W). Work then commenced to recover this mooring and the outermost mooring East Shetland 2 (60 28.55'N 000 07.92'W). During recovery operations of both of these moorings, messages transmitted from the acoustic releases at both moorings indicated that the moorings had been released. However, the moorings remained in position.

Chief scientist

George Slesser (Fisheries Research Services Aberdeen Marine Laboratory)

Project

AE11RO

Coordinating body

FRS

Cruise report

(0.12 MB)

Ocean/sea areas

General

North Sea
North East Atlantic Ocean (limit 40W)

Specific

Northern North Sea, Faroe-Shetland Channel, east of Shetland, Anton Dohrn Seamount, Wyville-Thomson Ridge, the shelf edge and Rockall Bank

Measurements

Physical oceanography

Surface measurements underway (T,S)

Quantity: number of samples = 1
Description: Thermosalinograph and underway fluorometer run throughout the cruise

Water bottle stations

Description: Water samples collected for calibration of CTD and thermosalinograph. No. of samples not noted

CTD stations

Quantity: number of stations = 146
Description: Hydrographic surveys along JONSIS line; East Shetland lines 1, 2 and 3; Faroe-Shetland Channel; shelf edge between Butt of Lewis and Shetland; Anton Dohrn Seamount; shelf edge to Butt of Lewis.

Chemical oceanography

Oxygen