Search the data

BODC Cruise Metadata Report for FRV Scotia (748S) cruise 1216S

Introduction

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

Cruise Inventory Information

Long name FRV Scotia (748S) cruise 1216S
Short name 1216S
Objectives and Narrative Objectives

1. To undertake the 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 station for MSFD.

Procedure

The primary objective of this survey is to assess the state of the haddock stock on the Rockall Plateau. The survey employs a semi random stratified survey design comprising four sampling strata separated according to depth. 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 and their allocation within each depth stratum is displayed in Figure 1. The number of stations within each depth strata is as follows: four stations at 0-150 m, 21 stations at 150-200 m, 10 stations at 200-250 m and five stations at 250-350 m. Where time allows additional hauls will be conducted outside our strata (at depth below 350 m). The positions of these will be influenced by trawls undertaken in the April 2016 Rockall monkfish survey where haddock were observed. 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.

One haul of 30 minutes duration will be made at each sampling station. Daily start times for survey stations will be at approximately 0600 hours and continue until approximately 2000 hours. The Scanmar system will be used to monitor wingspread, door spread and distance covered during each haul. A bottom contact sensor will be mounted on the footrope to record the distance of the trawl off the seabed. Catches will be worked up according to the protocols for International Bottom Trawl Surveys. A CTD will be deployed at selected trawl stations.

At night sediment samples will be collected using Day or Van Veen grabs. The samples positions will be decided on a day-to-day basis and will be influenced by vessel location at the end of each trawling period.

Normal contacts will be maintained with the Laboratory.
Ship FRV Scotia
Departure Port Aberdeen, United Kingdom
Departure Date 2016-08-28
Arrival Port Scrabster, United Kingdom
Arrival Date 2016-09-08
Principal Scientist(s) James Drewery (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;3/182;4
Work Area Description Rockall Plateau
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
18 CTD/STD cast 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  
1910456 CTD/STD cast 2016-08-30 05:34Z 57° 57' N, 13° 6' W Click for more
1910468 CTD/STD cast 2016-08-30 12:52Z 57° 48' N, 13° 27' W Click for more
1910481 CTD/STD cast 2016-08-31 05:07Z 58° 4' N, 14° 15' W Click for more
1910493 CTD/STD cast 2016-08-31 13:19Z 57° 34' N, 13° 55' W Click for more
1910500 CTD/STD cast 2016-08-31 18:11Z 57° 28' N, 14° 9' W Click for more
1910512 CTD/STD cast 2016-09-01 05:05Z 57° 31' N, 13° 33' W Click for more
1910524 CTD/STD cast 2016-09-01 13:53Z 57° 13' N, 13° 42' W Click for more
1910536 CTD/STD cast 2016-09-02 05:02Z 57° 17' N, 14° 15' W Click for more
1910548 CTD/STD cast 2016-09-02 14:38Z 56° 57' N, 14° 18' W Click for more
1910561 CTD/STD cast 2016-09-03 05:01Z 57° 3' N, 14° 57' W Click for more
1910573 CTD/STD cast 2016-09-03 10:56Z 56° 46' N, 15° 15' W Click for more
1910585 CTD/STD cast 2016-09-03 17:47Z 56° 32' N, 14° 56' W Click for more
1910597 CTD/STD cast 2016-09-04 04:59Z 56° 30' N, 15° 15' W Click for more
1910604 CTD/STD cast 2016-09-04 17:34Z 55° 51' N, 15° 14' W Click for more
1910616 CTD/STD cast 2016-09-05 05:07Z 56° 21' N, 14° 39' W Click for more
1910628 CTD/STD cast 2016-09-05 14:21Z 56° 37' N, 14° 18' W Click for more
1910641 CTD/STD cast 2016-09-06 05:24Z 57° 3' N, 13° 46' W Click for more
1910653 CTD/STD cast 2016-09-06 18:35Z 57° 18' N, 13° 3' 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