Marine_Scotland_FishDAC_1721
eng
dataset
Scottish Government (Marine Scotland)
+44 (0)300 244 4000
marinescotland@gov.scot
pointOfContact
2016-05-03
MEDIN Discovery Metadata
Version 2.3.7
urn:ogc:def:crs:EPSG::4326
OGP
1712A Clyde herring acoustic survey Alba Na Mara cruise 1712A
1712A, Clyde, Herring acoustic survey, Alba Na Mara
2016-04-05
publication
Marine_Scotland_FishDAC_1721
Daily folders (6) of Simrad format (.raw) acoustic data. Echoview format (EV) format analysis files. Excel biological data for 7 pelagic hauls. Continual AGDS data.
Objectives:
1. To conduct an acoustic survey designed to survey both the open and enclosed areas of the Clyde to ultimately provide an estimate of the abundance and distribution of herring
2. To obtain samples of herring for biological analysis, including age, length, weight, sex, maturity and ichthyophonus infection.
3. All other species caught will be measured for length and weight to establish a length weight relationship.
Scottish Government (Marine Scotland)
+44 (0)300 244 4000
Mailpoint 11, Area 1B South, Victoria Quay
Edinburgh
EH6 6QQ
United Kingdom
marinescotland@gov.scot
pointOfContact
Scottish Government (Marine Scotland)
+44 (0)300 244 4000
Mailpoint 11, Area 1B South, Victoria Quay
Edinburgh
EH6 6QQ
United Kingdom
marinescotland@gov.scot
custodian
Scottish Government (Marine Scotland)
+44 (0)300 244 4000
Mailpoint 11, Area 1B South, Victoria Quay
Edinburgh
EH6 6QQ
United Kingdom
marinescotland@gov.scot
distributor
Scottish Government (Marine Scotland)
+44 (0)300 244 4000
Mailpoint 11, Area 1B South, Victoria Quay
Edinburgh
EH6 6QQ
United Kingdom
marinescotland@gov.scot
originator
Not Planned
Marine Environmental Data and Information Network
Acoustics
Biota composition
SeaDataNet Agreed Parameter Groups
2010-10-23
revision
Acoustic backscatter in the water column
Fish abundance in water bodies
Fish biomass in water bodies
Fish morphology, age and physiology
BODC Parameter Discovery Vocabulary
2011-03-25
revision
Open Government License (http://www.nationalarchives.gov.uk/doc/open-government-licence/)
otherRestrictions
no limitations to public access
55000.00
eng
oceans
-6
-4
55
56.5
ICES Rectangles
1910-01-01
creation
39E4
ICES Rectangles
1910-01-01
creation
40E4
ICES Rectangles
1910-01-01
creation
41E4
ICES Rectangles
1910-01-01
creation
39E5
ICES Rectangles
1910-01-01
creation
40E5
ICES Rectangles
1910-01-01
creation
41E5
SeaDataNet vertical extent keywords
2010-01-01
revision
The entire body of water between the bed and the atmosphere.
2012-10-06
2012-10-14
https://www.bodc.ac.uk/data/information_and_inventories/cruise_inventory/search/
Reference info #0
Electronic - 4.6 GB - Daily folders (6) of Simrad format (.raw) acoustic data. Echoview format (EV) format analysis files. Excel biological data for 7 pelagic hauls. Continual AGDS data.
dataset
The survey will be carried out within an area bounded by approx. 55°N to 56°N and 04° 40’ W to 05° 40’ W. Echointegration will be carried out at 38, 120 and 200 kHz. Data gathered in the hours of darkness will not be used for stock assessment. Trawling operations will be carried out as and when marks are identified. Otoliths will be collected from a sub-sample of the herring to determine age. The maturity state and. presence of Icthyophonus infection will also be recorded.
The track will be similar to that carried out by FRV Clupea in 1991 given below (Figure 1). The survey will involve following a pre-set survey pattern, at a steaming speed of 8 knots. The intention is to spend the first three days surveying the southern part of the area, weather permitting, finishing in Campbeltown to change Fishery Officers. The rest of the time left will be spent covering the northern part of the survey, finishing in Campbeltown to allow the Fishery Officer to disembark, before setting sail to be in Fraserburgh for the morning of the 14 October