Constraints on a Shallow Offshore Gas Environment Determined by a Multidisciplinary Geophysical Approach: The Malin Sea, NW Ireland
16TH SEISMIX International Symposium on Multi-scale Seismic Imaging of the Earth's crust and Upper Mantle, 12-17 October 2014, Castelldefels, Barcelona.-- 1 page
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dig-icm-es-10261-1150572019-03-05T10:36:42Z Constraints on a Shallow Offshore Gas Environment Determined by a Multidisciplinary Geophysical Approach: The Malin Sea, NW Ireland García, Xavier Monteys, Xavier Evans, Rob L. 16TH SEISMIX International Symposium on Multi-scale Seismic Imaging of the Earth's crust and Upper Mantle, 12-17 October 2014, Castelldefels, Barcelona.-- 1 page During the Irish National Seabed Survey (INSS) in 2003, a gas related pockmark field was discovered and extensively mapped in the Malin Shelf region (NW Ireland). In summer 2006, additional complementary data involving core sample analysis, multibeam and single-beam backscatter classification, and a marine controlled-source electromagnetic survey were obtained in specific locations. This multidisciplinary approach allowed us to map the upper 20 m of the seabed in an unprecedented way and to correlate the main geophysical parameters with the geological properties of the seabed. The EM data provide us with information about sediment conductivity, which can be used as a proxy for porosity and also to identify the presence of fluid and fluid migration pathways. We conclude that, as a whole, the central part of the Malin basin is characterized by higher conductivities, which we interpret as a lithological change. Within the basin several areas are characterized by conductive anomalies associated with fluid flow processes and potentially the presence of microbial activity, as suggested by previous work. Pockmark structures show a characteristic electrical signature, with high-conductivity anomalies on the edges and less conductive, homogeneous interiors with several high-conductivity anomalies, potentially associated with gas-driven microbial activity Peer Reviewed 2015-05-12T12:33:45Z 2015-05-12T12:33:45Z 2014-10 2015-05-12T12:33:46Z póster de congreso http://purl.org/coar/resource_type/c_6670 16TH SEISMIX International Symposium on Multi-scale Seismic Imaging of the Earth's crust and Upper Mantle. Abstracts: 149 (2014) http://hdl.handle.net/10261/115057 http://www.iplusdinnova.com/es/conference/16th-seismix-international-symposium none |
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16TH SEISMIX International Symposium on Multi-scale Seismic Imaging of the Earth's crust and Upper Mantle, 12-17 October 2014, Castelldefels, Barcelona.-- 1 page |
format |
póster de congreso |
author |
García, Xavier Monteys, Xavier Evans, Rob L. |
spellingShingle |
García, Xavier Monteys, Xavier Evans, Rob L. Constraints on a Shallow Offshore Gas Environment Determined by a Multidisciplinary Geophysical Approach: The Malin Sea, NW Ireland |
author_facet |
García, Xavier Monteys, Xavier Evans, Rob L. |
author_sort |
García, Xavier |
title |
Constraints on a Shallow Offshore Gas Environment Determined by a Multidisciplinary Geophysical Approach: The Malin Sea, NW Ireland |
title_short |
Constraints on a Shallow Offshore Gas Environment Determined by a Multidisciplinary Geophysical Approach: The Malin Sea, NW Ireland |
title_full |
Constraints on a Shallow Offshore Gas Environment Determined by a Multidisciplinary Geophysical Approach: The Malin Sea, NW Ireland |
title_fullStr |
Constraints on a Shallow Offshore Gas Environment Determined by a Multidisciplinary Geophysical Approach: The Malin Sea, NW Ireland |
title_full_unstemmed |
Constraints on a Shallow Offshore Gas Environment Determined by a Multidisciplinary Geophysical Approach: The Malin Sea, NW Ireland |
title_sort |
constraints on a shallow offshore gas environment determined by a multidisciplinary geophysical approach: the malin sea, nw ireland |
publishDate |
2014-10 |
url |
http://hdl.handle.net/10261/115057 |
work_keys_str_mv |
AT garciaxavier constraintsonashallowoffshoregasenvironmentdeterminedbyamultidisciplinarygeophysicalapproachthemalinseanwireland AT monteysxavier constraintsonashallowoffshoregasenvironmentdeterminedbyamultidisciplinarygeophysicalapproachthemalinseanwireland AT evansrobl constraintsonashallowoffshoregasenvironmentdeterminedbyamultidisciplinarygeophysicalapproachthemalinseanwireland |
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1777666262636167168 |