2002 Strategic Environmental Assessment SEA4 Kommandor Jack SEA4 Survey Leg 1 - geophysical survey (north UKCS)

As part of the Department of Trade and Industry's (now Department of Energy and Climate Change) Strategic Environmental Assessment (SEA4) a geophysical survey of the UKCS north of Shetland (Northern Triangle) was carried out.



The objectives were to collect EM120 multibeam and backscatter data over the northernmost area of the UKCS, known as the northern triangle (an area defined approximately by the points 60 30 N, 03 30 W, 61 0 N, 01 40 E and 63 50 N, 0.5 W). The aims were to: create a regional bathymetric map of the northern triangle in the water depths between 600 and 2400m; obtain regional EM120 backscatter data over the same area; define the extent of the mud diapir province discovered during previous reconnaissance TOBI and seismic cruises; create high resolution bathymetric and backscatter maps of specific features, such as the mud diapirs; carry out a reconnaissance survey of the shallow water part of the northern triangle (200 and 500m water depth) collecting both bathymetry and backscatter data using an EM1002 multibeam system; complete, during the cruise, a preliminary interpretation of the above data, to be used as a guide for the sampling and seabed photography cruise which followed immediately.



Multibeam and chirp seismic data and sidescan sonar data were collected. Data are available.

21 processed multibeam files are available. Raw data, backscatter mosaics and bathymetric contours also available.

Seismic data are also available.

Cruise Report is also available.

Simple

Date (Publication)
2002-01-01
Citation identifier
British Geological Survey / BGS_SEA_168
Point of contact
Organisation name Individual name Electronic mail address Role

British Geological Survey (BGS)

Paul Henni

offshoredata@bgs.ac.uk

Custodian

Department for Energy and Climate Change (DECC)

enquiries@decc.gsi.gov.uk

Originator
Maintenance and update frequency
Not planned
Resource format
Name Version

Delimited

Documents

Image

Text or Plaintext
Keywords

SeaDataNet Parameter Discovery Vocabulary

GEMET - INSPIRE themes, version 1.0

  • Geology

  • Hydrography

SeaVoX Vertical Co-ordinate Coverages
Use limitation

The SEAs data were produced as part of the UK Department of Energy and Climate Change's Offshore Energy Strategic Environmental Assessment programme; Crown Copyright, all rights reserved. The DECC SEA must be acknowledged in any maps or publications that make use of the data. All the data files are freely available to the public. The Strategic Environmental Assessment (SEA) data portal provides free access to available data and reports which have been produced through the SEA process. The site is run and managed by BGS on behalf of the Department of Energy and Climate Change (DECC). Many files can be downloaded directly from this website. Those that are too large to download can be ordered via the website for postal delivery from BGS. BGS (NERC) has been contracted by DECC to publish SEA datasets on its behalf. All intellectual property rights (including , without limitation, copyrights, database rights and all other rights which subsist or may at any time in the future subsist in the Dataset(s)) in the Dataset(s) ('Intellectual Property Rights') are owned by DECC (formerly the Department of Trade and Industry, and the Department for Business, Enterprise and Regulatory Reform). BGS has been authorised by DECC to use SEA datasets for all purposes but on a 'not-for-profit basis'. BGS has been authorised by DECC to pass on SEA datasets to third parties so that they can use them for all purposes but on a 'not-for-profit' basis.

Access constraints
Intellectual property rights
Distance
5  m
Language
English
Topic category
  • Environment
  • Geoscientific information
  • Oceans
Title

SeaVoX salt and fresh water body gazetteer
Date (Revision)
2006-01-01
Code
North Atlantic Ocean
N
S
E
W
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Begin date
2002-07-01
End date
2002-07-23
Supplemental Information

http://www.offshore-sea.org.uk/site/index.php

Reference system identifier
OGP / urn:ogc:def:crs:EPSG::4230
Distribution format
    OnLine resource
    Protocol Linkage Name
    http://www.bgs.ac.uk/data/sea/home.html

    Strategic Environmental Assessment (SEA) data portal
    Hierarchy level
    Dataset
    Statement

    Offshore Survey and Engineering (OSAE) carried out the seismic survey using a CHIRP II Sub-profiler and the multibeam survey using Simrad EM120 and EM1002 as part of the UK Department of Energy and Climate Change's Offshore Energy Strategic Environmental Assessment programme. Approximately 22,500 km2 of EM120 multibeam bathymetry and backscatter data were obtained in water depths between 600 and 2400 m. In addition, approximately 450 km2 of EM1002 multibeam bathymetry and backscatter data were obtained in water depths less than 600 m. The only major problem concerned the quality of the EM120 backscatter data, which was much poorer than had been anticipated. National Oceanography Centre, Southampton carried out the sidescan sonar survey using a Simrad EA 500 echo sounder.

    Metadata

    File identifier
    aba64100-c17f-4de3-e044-0003ba6f30bd XML
    Metadata language
    English
    Hierarchy level
    Dataset
    Date stamp
    2011-08-30
    Metadata standard name

    MEDIN Discovery Metadata Standard
    Metadata standard version

    Version 2.3.5
    Metadata author
    Organisation name Individual name Electronic mail address Role

    British Geological Survey (BGS)

    Mary Mowat

    offshoredata@bgs.ac.uk

    		Point of contact
     
     

    Overviews

    Spatial extent

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    Keywords



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