Marine_Scotland_FishDAC_1706
eng
dataset
Scottish Government (Marine Scotland)
+44 (0)300 244 4000
marinescotland@gov.scot
pointOfContact
2016-03-24
MEDIN Discovery Metadata
Version 2.3.7
urn:ogc:def:crs:EPSG::4326
OGP
2009 - 2013 amalgamated VMS intensity layers
2015-02-25
publication
Marine_Scotland_FishDAC_1706
VMS data for all UK registered commercial fishing vessels (=15m length) for the period 2009-2013 in ICES areas VIa, VIb, IVa, IVb, IVc, IIa, VIId, and VIIa have been combined with landings information to develop GIS layers describing the spatial patterns of landings of the Scottish offshore fleet from within the Scottish zone of the UK Fishing limits (200 NM). This project covers Nephrops (mobile and static), Demersal (mobile and static), Pelagic (Mackerel and Herring), Crab, Lobster, scallop and squid fisheries.
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
As Needed
Marine Environmental Data and Information Network
Administration and dimensions
SeaDatanet Parameter Disciplines
2008-05-01
revision
Open Government License (http://www.nationalarchives.gov.uk/doc/open-government-licence/)
otherRestrictions
no limitations to public access
55000.00
eng
geoscientificInformation
-15.73242
6.591797
49.78127
63.07487
SeaDataNet vertical extent keywords
2010-01-01
revision
There is no appropriate value
2015-02-05
2015-12-31
https://dx.doi.org/10.7489/1706-1
DOI:https://dx.doi.org/10.7489/1706-1
http://gov.scot/Topics/marine/science/MSInteractive/Themes/fish-fisheries/vms09-13
download
dataset
Initially, VMS pings were filtered by speed (0 < speed < 5 knots) to distinguish fishing from steaming. Then, fishing pings were merged with landings data (i.e. logbooks). To avoid landings mis-allocation, fishing pings were assigned to overlapping ICES rectangles. Reported landings data were broken down by reported day and the daily landings in each ICES rectangle were equally distributed for those assigned pings in that day. All pings within a 2.5 km2 radius of major fishing ports were removed since the speed threshold applied during filtering, included periods of relatively low speed as vessels approached port areas. Total trip landings associated with removed pings were re-allocated to all remaining pings of each trip. Non-parametric density analysis was selected over the commonly used quadrate count to develop GIS layers describing annual distribution of fisheries. A gaussian kernel density estimation with a data-driven bandwidth selection approach (smoothed cross-validation) had been used resulting in high quality contour maps which form a better estimate of the spatial extent of fishing activity and intensity.