BODC Cruise Metadata Report for FRV Clupea (74CU) cruise 0806C
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 Clupea (74CU) cruise 0806C |
|---|---|
| Short name | 0806C |
| Objectives and Narrative |
Objectives
1. To carry out an acoustic survey to determine an abundance estimate for sandeels in the in the water column. Three frequencies, 38, 120, and 200 kH will be used to aid species recognition. This acoustic survey will also produce abundance estimates for herring and sprats. Concentrations of fish will be sampled using the pelagic trawl. Species composition and length frequency distributions of fish caught will be determined. Sub samples will be weighed and their otoliths removed to establish length-weight relationships and age composition. 2. To carry out a demersal trawl survey to determine an abundance index for sandeels in the seabed sediment. This demersal trawl survey will also produce abundance indices for herring and sprats, the two other main "prey" species as well as the major piscivorous fish predators in the area, whiting, haddock and cod. At each trawl station the length frequency of all fish species caught will be determined. Sub-samples of sandeels, herring, sprats, cod, haddock, and whiting will be weighed to determine length-weight relationships. Otoliths will be taken to determine age composition. Sub-samples of the gadoid predators will be retained and frozen for subsequent dietary analysis. 3. Simultaneously with the demersal trawl survey, a hydrographic survey will be undertaken using a Seabird 19 CTD sampler fitted with fluorometer and transmissometer to determine spatial variation in water temperature, salinity fluoroescence and turbidity across the study area. Approximately 44 vertical dip stations will be sampled. These data are required to inform the analysis of the demersal trawl and acoustic survey data to derive an overall sandeel abundance estimate. 4. Simultaneously with the acoustic survey, a survey of seabirds at sea within the study area will be undertaken using standard census methods. Protection of local breeding seabirds was one of the principal motives underpinning the sandeel fishery closure. 5. Whilst c |
| Ship | FRV Clupea |
| Departure Port | Fraserburgh, United Kingdom |
| Departure Date | 2006-06-15 |
| Arrival Port | Fraserburgh, United Kingdom |
| Arrival Date | 2006-06-28 |
| Principal Scientist(s) | Simon Greenstreet (Fisheries Research Services Aberdeen Marine Laboratory) |
| Responsible Organisation | Fisheries Research Services Aberdeen Marine Laboratory |
| Associated Project(s) | MFO7n |
| IHB Sea Areas Visited | North Sea |
| Marsden Squares Visited | 181;3 |
| Work Area Description | off Firth of Forth |
| 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 stations =
45
Description: Hydrographic sampling stations, work undertaken between 0400h and 1600 BST. A grid of hydrographic stations, utilising the demersal trawl stations along with additional stations, was sampled. At each station CTD deployed. The hydrogrpahic stations in the hydro transect were re-sampled to assess changes in hydrographic conditions over the course of the cruise. Water samples were collected at a hydro transect of stations for subsequent chlorophyll analysis to calibrate the flurometer. |
| Biology and fisheries | |
| Acoustic reflection on marine organisms. |
Quantity:
activity duration in days =
3
Description: Acoustic survey. Work conducted between 0400h and 1500 BST when sandeels were most likely to be active in the water column. Acoustic data integrated over 5 minute periods. RoxAnn data were routinely collected throughout the entire duration of the acoustic survey including additional track between transects and whilst steaming to and from anchorages. |
| Birds |
Quantity:
activity duration in days =
3
Description: Sea bird survey. Work conducted between 0400h and 1500 BST. Data were aggregated over the same 5 minute periods of acoustic integration to allow direct comparison of predator abundance and prey density. |
| Demersal fish |
Quantity:
number of stations =
19
Description: Demersal trawl stations, work undertaken between 0400h and 1600 BST. At each station A Jackson Rockhopper demersal trawl gear (BT158) with 10mm codend mesh was deployed. The total numbers at length of all species in the catch was determined. Samples of herring, sprats and sandeels were weighed to determine length-weight relationships and otoliths were collected to determine age at length keys. Samples of whiting and haddock were retained and frozen for dietary analysis at the laboratory |
| Mammals and reptiles |
Quantity:
number of observations =
8
Description: Grey seal sightings. The numbers, identity and locations of all marine mammals observed at sea recorded. |
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 |
|---|---|---|
| 53 | CTD/STD cast |
Chlorophyll pigment concentrations in water bodies Density of the water column Electrical conductivity of the water column Salinity of the water column Temperature of the water column Transmittance and attenuance 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 | |
|---|---|---|---|---|
| 722783 | CTD/STD cast | 2006-06-20 06:45Z | 56° 17' N, 1° 40' W | Click for more |
| 722795 | CTD/STD cast | 2006-06-20 07:45Z | 56° 17' N, 1° 46' W | Click for more |
| 722802 | CTD/STD cast | 2006-06-20 09:05Z | 56° 17' N, 2° 0' W | Click for more |
| 722814 | CTD/STD cast | 2006-06-20 09:55Z | 56° 17' N, 2° 9' W | Click for more |
| 722826 | CTD/STD cast | 2006-06-20 10:42Z | 56° 17' N, 2° 19' W | Click for more |
| 722838 | CTD/STD cast | 2006-06-20 11:30Z | 56° 17' N, 2° 30' W | Click for more |
| 722851 | CTD/STD cast | 2006-06-20 12:55Z | 56° 7' N, 2° 39' W | Click for more |
| 722863 | CTD/STD cast | 2006-06-22 05:40Z | 56° 7' N, 2° 40' W | Click for more |
| 722875 | CTD/STD cast | 2006-06-22 07:15Z | 56° 7' N, 2° 30' W | Click for more |
| 722887 | CTD/STD cast | 2006-06-22 09:05Z | 56° 2' N, 2° 30' W | Click for more |
| 722899 | CTD/STD cast | 2006-06-22 09:30Z | 56° 2' N, 2° 18' W | Click for more |
| 722906 | CTD/STD cast | 2006-06-22 10:00Z | 56° 2' N, 2° 10' W | Click for more |
| 722918 | CTD/STD cast | 2006-06-22 11:30Z | 56° 8' N, 2° 8' W | Click for more |
| 722931 | CTD/STD cast | 2006-06-22 12:05Z | 56° 7' N, 2° 0' W | Click for more |
| 722943 | CTD/STD cast | 2006-06-22 13:35Z | 56° 1' N, 2° 2' W | Click for more |
| 722955 | CTD/STD cast | 2006-06-23 05:40Z | 56° 2' N, 1° 39' W | Click for more |
| 722967 | CTD/STD cast | 2006-06-23 06:28Z | 56° 2' N, 1° 30' W | Click for more |
| 722979 | CTD/STD cast | 2006-06-23 07:50Z | 56° 1' N, 1° 20' W | Click for more |
| 722980 | CTD/STD cast | 2006-06-23 08:30Z | 56° 7' N, 1° 19' W | Click for more |
| 722992 | CTD/STD cast | 2006-06-23 10:00Z | 56° 6' N, 1° 31' W | Click for more |
| 723006 | CTD/STD cast | 2006-06-23 10:45Z | 56° 12' N, 1° 30' W | Click for more |
| 723018 | CTD/STD cast | 2006-06-23 12:20Z | 56° 10' N, 1° 40' W | Click for more |
| 723031 | CTD/STD cast | 2006-06-23 12:51Z | 56° 7' N, 1° 40' W | Click for more |
| 723043 | CTD/STD cast | 2006-06-23 13:44Z | 56° 2' N, 1° 49' W | Click for more |
| 723055 | CTD/STD cast | 2006-06-24 05:41Z | 56° 9' N, 1° 51' W | Click for more |
| 723067 | CTD/STD cast | 2006-06-24 06:08Z | 56° 12' N, 1° 49' W | Click for more |
| 723079 | CTD/STD cast | 2006-06-24 07:36Z | 56° 18' N, 1° 46' W | Click for more |
| 723080 | CTD/STD cast | 2006-06-24 08:06Z | 56° 17' N, 1° 40' W | Click for more |
| 723092 | CTD/STD cast | 2006-06-24 09:29Z | 56° 16' N, 1° 31' W | Click for more |
| 723111 | CTD/STD cast | 2006-06-24 10:22Z | 56° 22' N, 1° 40' W | Click for more |
| 723123 | CTD/STD cast | 2006-06-24 11:00Z | 56° 27' N, 1° 40' W | Click for more |
| 723135 | CTD/STD cast | 2006-06-24 12:20Z | 56° 27' N, 1° 48' W | Click for more |
| 723147 | CTD/STD cast | 2006-06-25 03:45Z | 56° 25' N, 2° 36' W | Click for more |
| 723159 | CTD/STD cast | 2006-06-25 05:04Z | 56° 27' N, 2° 28' W | Click for more |
| 723160 | CTD/STD cast | 2006-06-25 05:35Z | 56° 27' N, 2° 19' W | Click for more |
| 723172 | CTD/STD cast | 2006-06-25 07:17Z | 56° 27' N, 2° 6' W | Click for more |
| 723184 | CTD/STD cast | 2006-06-25 07:45Z | 56° 27' N, 2° 0' W | Click for more |
| 723196 | CTD/STD cast | 2006-06-25 08:45Z | 56° 22' N, 1° 49' W | Click for more |
| 723203 | CTD/STD cast | 2006-06-25 10:08Z | 56° 22' N, 2° 0' W | Click for more |
| 723215 | CTD/STD cast | 2006-06-25 10:45Z | 56° 22' N, 2° 10' W | Click for more |
| 723227 | CTD/STD cast | 2006-06-25 12:22Z | 56° 21' N, 2° 24' W | Click for more |
| 723239 | CTD/STD cast | 2006-06-25 12:45Z | 56° 22' N, 2° 30' W | Click for more |
| 723240 | CTD/STD cast | 2006-06-25 13:20Z | 56° 17' N, 2° 30' W | Click for more |
| 723252 | CTD/STD cast | 2006-06-25 13:56Z | 56° 12' N, 2° 30' W | Click for more |
| 723264 | CTD/STD cast | 2006-06-26 04:58Z | 56° 13' N, 2° 20' W | Click for more |
| 723276 | CTD/STD cast | 2006-06-26 05:36Z | 56° 7' N, 2° 19' W | Click for more |
| 723288 | CTD/STD cast | 2006-06-26 06:35Z | 56° 12' N, 2° 10' W | Click for more |
| 723307 | CTD/STD cast | 2006-06-26 08:09Z | 56° 12' N, 1° 57' W | Click for more |
| 723319 | CTD/STD cast | 2006-06-26 08:40Z | 56° 12' N, 1° 50' W | Click for more |
| 723320 | CTD/STD cast | 2006-06-26 09:30Z | 56° 12' N, 1° 40' W | Click for more |
| 723332 | CTD/STD cast | 2006-06-26 10:45Z | 56° 17' N, 2° 0' W | Click for more |
| 723344 | CTD/STD cast | 2006-06-26 12:43Z | 56° 17' N, 2° 13' W | Click for more |
| 723356 | CTD/STD cast | 2006-06-26 13:15Z | 56° 17' N, 2° 20' W | Click for more |
Project Database
No data currently held for this cruise in the BODC Project Database
