Search the data

BODC Cruise Metadata Report for FRV Scotia (748S) cruise 1319S

Introduction

This report collates information from the BODC cruise inventory and oceanographic databases. It presents

Cruise Inventory Information

Long name FRV Scotia (748S) cruise 1319S
Short name 1319S
Objectives and Narrative Objectives

1. To undertake a bottom trawl survey of haddock on Rockall Bank to a depth of 350 m.
2. To deploy a CTD at selected trawl stations to collect temperature and salinity profiles.
3. To collect sediment samples at selected stations
4. To record marine litter at each trawl station for MSFD

Procedure

The primary objective of this survey is to assess the state of the haddock stock on the Rockall Plateau. The Rockall haddock survey utilises a semi-random stratified survey design comprising four depth-separated sampling strata. Sampling intensity within each of the four strata reflects the fish density observed in each of these during previous surveys. Trawling will be carried out during the hours of daylight at randomly selected locations within the 350 m contour. Forty primary tow positions have been generated. The number of primary stations within each depth strata is as follows: five stations at 0-150 m, 21 stations at 150-200 m, 10 stations at 200-250 m and four stations at 250-350 m. Scotia will undertake a trawl haul within five miles of each station position where possible or, failing that, choose an alternative. The minimum spacing between trawl locations is set at 7nm. A further 22 secondary stations across the various strata have been generated to provide a source of additional stations and/or alternatives should any primary station prove unfishable. Where time allows additional hauls will be conducted outside the existing strata (R1-R4) in depths between 350-500 m. This is a periodic check that is undertaken to test the current depth boundary at 350 m.

One haul of 30 minutes duration will be made at each sampling station. Daily start times will vary depending on available daylight. The SCANMAR system will be used to monitor the headline height, wing spread and door spread for each haul. Bottom contact data from each trawl will also be collected using the NOAA bottom contact sensor which will be mounted on a bar in the centre of the ground-gear. In addition to the routine sampling, biological data will be collected for target species in line with the EU data regulation. All fish will be processed in accordance with the protocols as described in the Manual of the IBTS North Eastern Atlantic Surveys (http://doi.org/10.17895/ices.pub.3519)

During trawl downtime at night, Scotia will take sediment samples using a Van Veen Grab. The sampling positions for the grabs will be confirmed on a day to day basis and will be influenced by vessel location at the end of each trawling period.
Ship FRV Scotia
Departure Port Aberdeen, United Kingdom
Departure Date 2019-09-14
Arrival Port Ullapool, United Kingdom
Arrival Date 2019-09-26
Principal Scientist(s) Ruadhan Gillespie-Mules (Marine Scotland Aberdeen Marine Laboratory)
Responsible Organisation Marine Scotland Aberdeen Marine Laboratory
Associated Project(s)
IHB Sea Areas Visited North East Atlantic Ocean (limit 40W)
Marsden Squares Visited 182;3
Work Area Description Rockall Bank
Unable to lookup cruise bounds at this time
Work Area Bounding Polygon
Southern Limit unknown
Northern Limit unknown
Western Limit unknown
Eastern Limit unknown

Cruise Inventory Datasets

No information on datasets is currently available for this cruise

Cruise Inventory Mooring/Buoy Operations

No information on datasets is currently available

Summary of BODC Data Holdings for the Cruise

National Oceanographic Database

Summary

# Series Instrument Description Parameters
19 CTD/STD cast Chlorophyll pigment concentrations in water bodies
Concentration of suspended particulate material in the water column
Density of the water column
Electrical conductivity of the water column
Reference numbers
Salinity of the water column
Temperature of the water column
Vertical spatial coordinates

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

Full List

BODC Reference Instrument Description Date/Time Location  
2040600 CTD/STD cast 2019-09-17 17:03Z 57° 53' N, 13° 31' W Click for more
2040612 CTD/STD cast 2019-09-18 05:46Z 58° 3' N, 14° 15' W Click for more
2040624 CTD/STD cast 2019-09-19 05:49Z 57° 2' N, 14° 13' W Click for more
2040636 CTD/STD cast 2019-09-19 11:04Z 56° 43' N, 14° 30' W Click for more
2040648 CTD/STD cast 2019-09-19 17:30Z 56° 52' N, 14° 55' W Click for more
2040661 CTD/STD cast 2019-09-20 05:36Z 56° 1' N, 15° 13' W Click for more
2040673 CTD/STD cast 2019-09-20 14:44Z 56° 25' N, 15° 9' W Click for more
2040685 CTD/STD cast 2019-09-20 18:20Z 56° 43' N, 15° 6' W Click for more
2040697 CTD/STD cast 2019-09-21 05:33Z 56° 20' N, 14° 46' W Click for more
2040704 CTD/STD cast 2019-09-21 18:18Z 56° 58' N, 14° 4' W Click for more
2040716 CTD/STD cast 2019-09-22 05:32Z 56° 36' N, 14° 18' W Click for more
2040728 CTD/STD cast 2019-09-22 11:39Z 56° 57' N, 13° 47' W Click for more
2040741 CTD/STD cast 2019-09-22 15:52Z 57° 10' N, 14° 9' W Click for more
2040753 CTD/STD cast 2019-09-22 18:14Z 57° 19' N, 13° 49' W Click for more
2040765 CTD/STD cast 2019-09-23 05:27Z 57° 10' N, 13° 26' W Click for more
2040777 CTD/STD cast 2019-09-23 12:07Z 57° 45' N, 13° 19' W Click for more
2040789 CTD/STD cast 2019-09-23 15:18Z 57° 24' N, 13° 30' W Click for more
2040790 CTD/STD cast 2019-09-23 17:35Z 57° 29' N, 13° 41' W Click for more
2040808 CTD/STD cast 2019-09-24 05:42Z 58° 10' N, 13° 35' W Click for more

Project Database

No data currently held for this cruise in the BODC Project Database

References

Track Charts

No track charts currently available

Reports

No reports currently available