Shallow geology and seabed processes, Western Barents Sea
The project is aimed to achieve a better understanding of shallow geological\/seabed conditions and processes to support technical and environmental aspects of exploration and production along the western margin of the Hammerfest Basin and Loppa High, and in the Tromsø Basin\/lngøydjupet area. \rThe...
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ftnorgesgu:oai:openarchive.ngu.no:11250/2664717 2023-05-15T15:39:01+02:00 Shallow geology and seabed processes, Western Barents Sea Chand, Shyam Bøe, Reidulv Rise, Leif Thorsnes, Terje 2009 application/pdf https://hdl.handle.net/11250/2664717 eng eng NGU-Rapport (2009.041) (328200) Shallow geology and seabed processes W Barents Sea urn:issn:0800-3416 https://hdl.handle.net/11250/2664717 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 71 s. POCKMARK GRUNN GASS MARINGEOLOGI SEISMIKK SEISMISK STRATIGRAFI Report 2009 ftnorgesgu 2022-07-03T15:26:16Z The project is aimed to achieve a better understanding of shallow geological\/seabed conditions and processes to support technical and environmental aspects of exploration and production along the western margin of the Hammerfest Basin and Loppa High, and in the Tromsø Basin\/lngøydjupet area. \rThe project has had the following subgoals: \r\u2022 Detectionofpockmarksandseep-related features, including water column gas flares and neo-tectonic structures\r\u2022 Investigate the occurrence of gashydrates (GH), bottom-simulating reflectors (BSR) and other related seismic anomalies\r\u2022 Establish seismostratigraphy\rThe project has the following results:\r\u2022 Bathymetry and backscatter has given an overview of Holocene surface features such as pockmarks, iceberg ploughmarks etc and their relation to subsurface geological processes. Even though numerous pockmarks were identified in two basins along the studyarea, no water colurnn gas flares were detected to indicate active gas leakage.\r\u2022 Gas and BSR-like anomalies were identified and related to gashydrate stability conditions of the study area. GHSZ modelling indicates gas hydrate stability for structure II hydrates with a few percent of ethane, propane or CO2.\r\u2022 High-resolution seismic data gave a detailed picture of depositional processes during postglacial times. Two subunits, 4W1 and 4W2, are identified within the youngest Quaternary unit 4W. They probably represent the two last glacial advances LGM I and II towards the present shelf edge. 55200 Report Barents Sea Hammerfest Hammerfest Basin Loppa Tromsø NGU Open Archive (Geological Survey of Norway) Barents Sea Gass ENVELOPE(-29.543,-29.543,-80.447,-80.447) Loppa ENVELOPE(22.351,22.351,70.240,70.240) Tromsø |
institution |
Open Polar |
collection |
NGU Open Archive (Geological Survey of Norway) |
op_collection_id |
ftnorgesgu |
language |
English |
topic |
POCKMARK GRUNN GASS MARINGEOLOGI SEISMIKK SEISMISK STRATIGRAFI |
spellingShingle |
POCKMARK GRUNN GASS MARINGEOLOGI SEISMIKK SEISMISK STRATIGRAFI Chand, Shyam Bøe, Reidulv Rise, Leif Thorsnes, Terje Shallow geology and seabed processes, Western Barents Sea |
topic_facet |
POCKMARK GRUNN GASS MARINGEOLOGI SEISMIKK SEISMISK STRATIGRAFI |
description |
The project is aimed to achieve a better understanding of shallow geological\/seabed conditions and processes to support technical and environmental aspects of exploration and production along the western margin of the Hammerfest Basin and Loppa High, and in the Tromsø Basin\/lngøydjupet area. \rThe project has had the following subgoals: \r\u2022 Detectionofpockmarksandseep-related features, including water column gas flares and neo-tectonic structures\r\u2022 Investigate the occurrence of gashydrates (GH), bottom-simulating reflectors (BSR) and other related seismic anomalies\r\u2022 Establish seismostratigraphy\rThe project has the following results:\r\u2022 Bathymetry and backscatter has given an overview of Holocene surface features such as pockmarks, iceberg ploughmarks etc and their relation to subsurface geological processes. Even though numerous pockmarks were identified in two basins along the studyarea, no water colurnn gas flares were detected to indicate active gas leakage.\r\u2022 Gas and BSR-like anomalies were identified and related to gashydrate stability conditions of the study area. GHSZ modelling indicates gas hydrate stability for structure II hydrates with a few percent of ethane, propane or CO2.\r\u2022 High-resolution seismic data gave a detailed picture of depositional processes during postglacial times. Two subunits, 4W1 and 4W2, are identified within the youngest Quaternary unit 4W. They probably represent the two last glacial advances LGM I and II towards the present shelf edge. 55200 |
format |
Report |
author |
Chand, Shyam Bøe, Reidulv Rise, Leif Thorsnes, Terje |
author_facet |
Chand, Shyam Bøe, Reidulv Rise, Leif Thorsnes, Terje |
author_sort |
Chand, Shyam |
title |
Shallow geology and seabed processes, Western Barents Sea |
title_short |
Shallow geology and seabed processes, Western Barents Sea |
title_full |
Shallow geology and seabed processes, Western Barents Sea |
title_fullStr |
Shallow geology and seabed processes, Western Barents Sea |
title_full_unstemmed |
Shallow geology and seabed processes, Western Barents Sea |
title_sort |
shallow geology and seabed processes, western barents sea |
publishDate |
2009 |
url |
https://hdl.handle.net/11250/2664717 |
long_lat |
ENVELOPE(-29.543,-29.543,-80.447,-80.447) ENVELOPE(22.351,22.351,70.240,70.240) |
geographic |
Barents Sea Gass Loppa Tromsø |
geographic_facet |
Barents Sea Gass Loppa Tromsø |
genre |
Barents Sea Hammerfest Hammerfest Basin Loppa Tromsø |
genre_facet |
Barents Sea Hammerfest Hammerfest Basin Loppa Tromsø |
op_source |
71 s. |
op_relation |
NGU-Rapport (2009.041) (328200) Shallow geology and seabed processes W Barents Sea urn:issn:0800-3416 https://hdl.handle.net/11250/2664717 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
_version_ |
1766370469066309632 |