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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Main Authors: García, Xavier, Monteys, Xavier, Evans, Rob L.
Format: póster de congreso biblioteca
Published: 2014-10
Online Access:http://hdl.handle.net/10261/115057
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spelling 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
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
description 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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