• NERC Data Catalogue Service
  •  
  •  
  •  

2005 Strategic Environmental Assessment SEA2 Investigation of the origin of shallow gas in Outer Moray Firth open blocks 15/20c and 15/25d

As part of the Department of Trade and Industry's (now Department of Energy and Climate Change) Strategic Environmental Assessment (SEA2), this report briefly describes the evidence for the origin of shallow gas in Outer Moray Firth open blocks 15/20c and 15/25d. Sea floor pockmarks are known to occur within these blocks, and they indicate the seepage of gas from shallow levels into the local water column. An environmental concern is that any industry activity in these blocks must not plumb into any component of the system that is sustaining the gas seepages at sea bed. The study area covers two part-blocks within the eastern part of the Witch Ground Graben within the UK Central North Sea. This study follows on from the DTI 2001 SEA research on pockmarks.

Simple

Date (Publication)
2005-02-01
Identifier
British Geological Survey / BGS_SEA_16
Custodian
  British Geological Survey (BGS) - Paul Henni
Murchison House, West Mains Road , Edinburgh , EH9 3LA , UK
+44 (0)131 667 1000
Originator
  Department for Energy and Climate Change (DECC)
Admiralty Way , London , SW1A 2HD , UK
+44 0300 060 4000
+44 (0) 1823 284077
Maintenance and update frequency
notPlanned Not planned
Name
Documents
Keywords
  • NDGO0001
SeaDataNet Parameter Discovery Vocabulary
  • Habitat characterisation
  • Industrial activity
  • Seismic reflection
GEMET - INSPIRE themes, version 1.0
  • Geology
SeaVoX Vertical Co-ordinate Coverages
  • crust
  • sediment
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
intellectualPropertyRights Intellectual property rights
Distance
5  http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/uom/gmxUom.xml#m
Metadata language
EnglishEnglish
Topic category
  • Environment
  • Geoscientific information
  • Oceans
Date (Revision)
2006-01-01
Unique resource identifier
North Sea
N
S
E
W
thumbnail


Begin date
2005-01-01
End date
2005-01-01
Supplemental Information
http://www.offshore-sea.org.uk/site/index.php
Reference system identifier
OGP / urn:ogc:def:crs:EPSG::4326
Distribution format
OnLine resource
Strategic Environmental Assessment (SEA) data portal

The Strategic Environmental Assessment (SEA) data portal provides free access to available data and reports which have been produced through the UK Department of Energy and Climate Change 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.

Hierarchy level
dataset Dataset
Statement
This report was compiled by the British Geological Survey as part of the UK Department of Energy and Climate Change's Offshore Energy Strategic Environmental Assessment programme. The study comprised three main tasks: A desk study based on publications in the literature and unpublished reports to determine whether or not there is already a consensus on the derivation of the gas seepages in blocks 15/20c and 15/25d; A quick interpretation of available BGS shallow seismic data and commercial site survey data to determine the extent of the gas in the shallow subsurface.; Quick interpretation of appropriate horizons on the PGS MegaSurvey for indications of gas seepages from deeper levels. Use of seismic attribute analysis to map the locations of Tertiary channels that might be acting as migration conduits into the area. Investigate for gas chimneys, faults extending to shallow levels, amplitude anomalies, evidence for sediment remobilisation and any other evidence for upward gas migration into the shallow subsurface.
File identifier
aba64100-c106-4de3-e044-0003ba6f30bd XML
Metadata language
EnglishEnglish
Hierarchy level
dataset Dataset
Date stamp
2011-08-30
Metadata standard name
MEDIN Discovery Metadata Standard
Metadata standard version
Version 2.3.5
Point of contact
  British Geological Survey (BGS) - Mary Mowat
+44 (0)131 667 1000
+44 (0)131 668 4140
 
 

Overviews

Spatial extent

N
S
E
W
thumbnail


Keywords


Provided by

logo

Share on social sites

Access to the portal
Read here the full details and access to the data.

Associated resources

Not available


  •  
  •  
  •