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BODC Cruise Metadata Report for FRV Scotia (748S) cruise 1115S

Introduction

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

Cruise Inventory Information

Long name FRV Scotia (748S) cruise 1115S
Short name 1115S
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 samples (genetics and otoliths) for selected species for population studies.
4. To collect sediment samples at selected stations
5. To record marine litter at each station for MSFD

Procedure

The primary objective of this part of the survey is to assess the state of the haddock stock on the Rockall Plateau. The Rockall haddock surveys 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, 20 stations at 150-200 m, 11 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 2015 Rockall monkfish survey where haddock were found. A further 22 secondary stations across the various strata have been generated to provide 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 2015-08-23
Arrival Port Ullapool, United Kingdom
Arrival Date 2015-09-03
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 181/182;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
20 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  
1883518 CTD/STD cast 2015-08-25 20:02Z 57° 37' N, 13° 9' W Click for more
1883531 CTD/STD cast 2015-08-26 05:05Z 57° 43' N, 13° 18' W Click for more
1883543 CTD/STD cast 2015-08-26 10:03Z 57° 33' N, 13° 48' W Click for more
1883555 CTD/STD cast 2015-08-26 14:43Z 57° 51' N, 13° 48' W Click for more
1883567 CTD/STD cast 2015-08-27 05:14Z 58° 13' N, 14° 3' W Click for more
1883579 CTD/STD cast 2015-08-27 14:37Z 57° 24' N, 14° 9' W Click for more
1883580 CTD/STD cast 2015-08-27 17:49Z 57° 15' N, 13° 59' W Click for more
1883592 CTD/STD cast 2015-08-28 10:45Z 56° 55' N, 14° 23' W Click for more
1883611 CTD/STD cast 2015-08-28 17:22Z 57° 5' N, 14° 48' W Click for more
1883623 CTD/STD cast 2015-08-29 05:17Z 56° 48' N, 14° 25' W Click for more
1883635 CTD/STD cast 2015-08-29 12:59Z 56° 35' N, 15° 6' W Click for more
1883647 CTD/STD cast 2015-08-29 16:18Z 56° 27' N, 15° 21' W Click for more
1883659 CTD/STD cast 2015-08-29 19:07Z 56° 17' N, 15° 50' W Click for more
1883660 CTD/STD cast 2015-08-30 05:00Z 56° 1' N, 15° 13' W Click for more
1883672 CTD/STD cast 2015-08-30 10:22Z 56° 6' N, 14° 46' W Click for more
1883684 CTD/STD cast 2015-08-30 15:05Z 56° 26' N, 14° 55' W Click for more
1883696 CTD/STD cast 2015-08-31 12:18Z 56° 38' N, 14° 13' W Click for more
1883703 CTD/STD cast 2015-08-31 18:40Z 57° 3' N, 13° 45' W Click for more
1883715 CTD/STD cast 2015-09-01 05:04Z 57° 0' N, 13° 28' W Click for more
1883727 CTD/STD cast 2015-09-01 12:32Z 57° 13' N, 13° 25' 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