BODC Cruise Metadata Report for FRV Scotia (748S) cruise 1504S
Introduction
This report collates information from the BODC cruise inventory and oceanographic databases. It presents
- Cruise Inventory Information
- A summary of BODC data holdings for the cruise from the
- References - including cruise tracks and cruise reports
Cruise Inventory Information
| Long name | FRV Scotia (748S) cruise 1504S |
|---|---|
| Short name | 1504S |
| Objectives and Narrative |
Objectives
1. To conduct an acoustic survey to estimate the abundance and distribution of mackerel in the northern North Sea (ICES division IVa). 2. To obtain samples of mackerel for biological analysis, including age, length, weight, sex and maturity. 3. To determine the species composition and target strength of fish in schools using the autonomous echosounder and video rig. 4. To make video observations of the multi-sampling pelagic trawl with the RCTV. Narrative Scientific staff joined the vessel at 0900 on 21 October and the vessel departed at 1000. A small meeting was held with all scientists and the ship's fishing mates and navigation officers to explain the objectives of the survey and to describe general operating procedures. The vessel proceeded to Scapa Flow to calibrate the acoustic transducers, however, prior to arrival it was evident that poor weather would prevent a successful exercise and so this was abandoned. The survey commenced on 22 October at 1347 at 61°55.5'N 001°00'W. Transects progressed southward along lines of latitude, at spacings of 15 or 7.5 nautical miles (nmi) as planned. Problems with the hydraulic systems on the vessel prevented any fishing operations from 2130 on 22 October until 1500 on 25 October. At 1520 on 27 October, an opportunity was taken to calibrate the echosounders due to a break in the [poor] weather in Wick of Grunting, north of Fetlar, Shetland. The vessel docked into Lerwick harbour on 29 October for 24 hours to enable a change of personnel and to give staff their rest day in line with working time directives. The survey resumed at 1432 on 30 October. The first part of the survey was completed at 0656 on 4 November. The second survey commenced immediately, following a zigzag design of the area of higher mackerel abundance along the 200 m contour: this was interlaced with a complementary survey carried out by the Norwegian FRV GO Sars. FRV Scotia completed its survey at 1320 on 5 November, after which the vessel rendezvoused with the GO Sars to carry out an intercalibration exercise starting at 2040. This lasted for approximately 7 hours (73 nmi) covering four transects with each vessel taking the lead alternately. The intercalibration was completed at 0400 on 6 November. The vessel returned to Aberdeen on the morning of 7 November. |
| Ship | FRV Scotia |
| Departure Port | Aberdeen, United Kingdom |
| Departure Date | 2004-10-21 |
| Arrival Port | Aberdeen, United Kingdom |
| Arrival Date | 2004-11-07 |
| Principal Scientist(s) | Paul G Fernandes (Fisheries Research Services Aberdeen Marine Laboratory) |
| Responsible Organisation | Fisheries Research Services Aberdeen Marine Laboratory |
| Associated Project(s) | MF01ta |
| IHB Sea Areas Visited | North Sea, North East Atlantic Ocean (limit 40W) |
| Marsden Squares Visited | 181;3/216;3/217;1 |
| Work Area Description | Orkneys and Shetlands, northern North Sea |
| 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
| Physical oceanography | |
|---|---|
| CTD stations |
Quantity:
number of profiles =
27
Description: |
| Biology and fisheries | |
| Acoustic reflection on marine organisms. |
Quantity:
data volume in gigabytes =
50
Description: acoustic data recorded using a EK60 echosounder (38, 120 and 200 kHz) to detect mackerel |
| Pelagic fish |
Quantity:
number of hauls =
16
Description: PT160 pelagic trawl hauls with 2042 mackerel length measurements, 624 mackerel sampled for weight, sex, maturity and otoliths, 1513 herring lengths, 155 blue whiting lengths, 13 saithe lengths, silversides, pearlsides, and a variety of small gadoids. No cod were caught |
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 |
|---|---|---|
| 27 | CTD/STD cast |
Electrical conductivity of the water column 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 | |
|---|---|---|---|---|
| 656373 | CTD/STD cast | 2004-10-22 23:18Z | 61° 55' N, 1° 31' E | Click for more |
| 656385 | CTD/STD cast | 2004-10-24 15:38Z | 61° 7' N, 1° 0' E | Click for more |
| 656397 | CTD/STD cast | 2004-10-24 20:31Z | 61° 10' N, 0° 28' W | Click for more |
| 656404 | CTD/STD cast | 2004-10-26 09:50Z | 60° 42' N, 2° 25' E | Click for more |
| 656416 | CTD/STD cast | 2004-10-26 18:46Z | 60° 36' N, 3° 28' E | Click for more |
| 656428 | CTD/STD cast | 2004-10-27 02:36Z | 60° 40' N, 1° 51' E | Click for more |
| 656441 | CTD/STD cast | 2004-10-27 07:40Z | 60° 40' N, 0° 13' E | Click for more |
| 656453 | CTD/STD cast | 2004-10-27 11:15Z | 60° 40' N, 0° 19' W | Click for more |
| 656465 | CTD/STD cast | 2004-10-27 15:32Z | 60° 36' N, 0° 48' W | Click for more |
| 656477 | CTD/STD cast | 2004-10-28 11:39Z | 60° 25' N, 1° 25' E | Click for more |
| 656489 | CTD/STD cast | 2004-10-28 19:25Z | 60° 20' N, 3° 29' E | Click for more |
| 656490 | CTD/STD cast | 2004-10-28 22:52Z | 60° 20' N, 2° 33' E | Click for more |
| 656508 | CTD/STD cast | 2004-10-29 06:24Z | 60° 10' N, 0° 29' E | Click for more |
| 656521 | CTD/STD cast | 2004-10-30 17:12Z | 59° 55' N, 0° 9' W | Click for more |
| 656533 | CTD/STD cast | 2004-10-30 20:16Z | 59° 55' N, 0° 37' E | Click for more |
| 656545 | CTD/STD cast | 2004-10-30 21:40Z | 59° 55' N, 0° 57' E | Click for more |
| 656557 | CTD/STD cast | 2004-10-31 08:02Z | 60° 12' N, 3° 13' E | Click for more |
| 656569 | CTD/STD cast | 2004-10-31 16:43Z | 60° 4' N, 3° 11' E | Click for more |
| 656570 | CTD/STD cast | 2004-11-01 06:43Z | 60° 49' N, 3° 13' E | Click for more |
| 656582 | CTD/STD cast | 2004-11-01 16:04Z | 59° 43' N, 3° 3' E | Click for more |
| 656594 | CTD/STD cast | 2004-11-01 23:25Z | 59° 34' N, 2° 52' E | Click for more |
| 656601 | CTD/STD cast | 2004-11-02 08:06Z | 59° 40' N, 0° 15' E | Click for more |
| 656613 | CTD/STD cast | 2004-11-02 13:36Z | 59° 40' N, 0° 39' E | Click for more |
| 656625 | CTD/STD cast | 2004-11-02 19:37Z | 59° 21' N, 0° 22' E | Click for more |
| 656637 | CTD/STD cast | 2004-11-03 02:25Z | 59° 21' N, 1° 17' E | Click for more |
| 656649 | CTD/STD cast | 2004-11-03 07:25Z | 59° 21' N, 2° 22' E | Click for more |
| 656650 | CTD/STD cast | 2004-11-03 16:09Z | 59° 19' N, 3° 31' E | Click for more |
Project Database
No data currently held for this cruise in the BODC Project Database
