Imaging Arctic Permafrost: Modeling for Choice of Geophysical Methods
Knowledge of permafrost structure, with accumulations of free natural gas and gas hydrates, is indispensable for coping with spontaneous gas emission and other problems related to exploration and production drilling in Arctic petroleum provinces. The existing geophysical methods have different poten...
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ftdoajarticles:oai:doaj.org/article:981761362dc64be3a1f10d26f7fc4bc6 2023-05-15T14:51:06+02:00 Imaging Arctic Permafrost: Modeling for Choice of Geophysical Methods Igor Buddo Natalya Misyurkeeva Ivan Shelokhov Evgeny Chuvilin Alexey Chernikh Alexander Smirnov 2022-10-01T00:00:00Z https://doi.org/10.3390/geosciences12100389 https://doaj.org/article/981761362dc64be3a1f10d26f7fc4bc6 EN eng MDPI AG https://www.mdpi.com/2076-3263/12/10/389 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences12100389 2076-3263 https://doaj.org/article/981761362dc64be3a1f10d26f7fc4bc6 Geosciences, Vol 12, Iss 389, p 389 (2022) Arctic permafrost gas hydrates seismic surveys resistivity surveys electrical resistivity tomography Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.3390/geosciences12100389 2022-12-30T23:06:56Z Knowledge of permafrost structure, with accumulations of free natural gas and gas hydrates, is indispensable for coping with spontaneous gas emission and other problems related to exploration and production drilling in Arctic petroleum provinces. The existing geophysical methods have different potentialities for imaging the permafrost base and geometry, vertical fluid conduits (permeable zones), taliks, gas pockets, and gas hydrate accumulations in the continental Arctic areas. The synthesis of data on cryological and geological conditions was the basis for a geophysical–geological model of northern West Siberia to a depth of 400 m, which includes modern permafrost, lenses of relict permafrost with hypothetical gas hydrates, and a permeable zone that may be a path for the migration of gas–water fluids. The model was used to model synthetic seismic, electrical resistivity tomography (ERT), and transient electromagnetic (TEM) data, thus testing the advantages and drawbacks of the three methods. Electrical resistivity tomography has insufficient penetration to resolve all features and can run only in the summer season. Seismic surveys have limitations in mapping fluid conduits, though they can image a horizontally layered structure in any season. Shallow transient electromagnetic (sTEM) soundings can image any type of features included into the geological model and work all year round. Thus, the best strategy is to use TEM surveys as the main method, combined with seismic and ERT data. Each specific method is chosen proceeding from economic viability and feasibility in the specific physiographic conditions of mountain and river systems. Article in Journal/Newspaper Arctic permafrost Siberia Directory of Open Access Journals: DOAJ Articles Arctic Geosciences 12 10 389 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic permafrost gas hydrates seismic surveys resistivity surveys electrical resistivity tomography Geology QE1-996.5 |
spellingShingle |
Arctic permafrost gas hydrates seismic surveys resistivity surveys electrical resistivity tomography Geology QE1-996.5 Igor Buddo Natalya Misyurkeeva Ivan Shelokhov Evgeny Chuvilin Alexey Chernikh Alexander Smirnov Imaging Arctic Permafrost: Modeling for Choice of Geophysical Methods |
topic_facet |
Arctic permafrost gas hydrates seismic surveys resistivity surveys electrical resistivity tomography Geology QE1-996.5 |
description |
Knowledge of permafrost structure, with accumulations of free natural gas and gas hydrates, is indispensable for coping with spontaneous gas emission and other problems related to exploration and production drilling in Arctic petroleum provinces. The existing geophysical methods have different potentialities for imaging the permafrost base and geometry, vertical fluid conduits (permeable zones), taliks, gas pockets, and gas hydrate accumulations in the continental Arctic areas. The synthesis of data on cryological and geological conditions was the basis for a geophysical–geological model of northern West Siberia to a depth of 400 m, which includes modern permafrost, lenses of relict permafrost with hypothetical gas hydrates, and a permeable zone that may be a path for the migration of gas–water fluids. The model was used to model synthetic seismic, electrical resistivity tomography (ERT), and transient electromagnetic (TEM) data, thus testing the advantages and drawbacks of the three methods. Electrical resistivity tomography has insufficient penetration to resolve all features and can run only in the summer season. Seismic surveys have limitations in mapping fluid conduits, though they can image a horizontally layered structure in any season. Shallow transient electromagnetic (sTEM) soundings can image any type of features included into the geological model and work all year round. Thus, the best strategy is to use TEM surveys as the main method, combined with seismic and ERT data. Each specific method is chosen proceeding from economic viability and feasibility in the specific physiographic conditions of mountain and river systems. |
format |
Article in Journal/Newspaper |
author |
Igor Buddo Natalya Misyurkeeva Ivan Shelokhov Evgeny Chuvilin Alexey Chernikh Alexander Smirnov |
author_facet |
Igor Buddo Natalya Misyurkeeva Ivan Shelokhov Evgeny Chuvilin Alexey Chernikh Alexander Smirnov |
author_sort |
Igor Buddo |
title |
Imaging Arctic Permafrost: Modeling for Choice of Geophysical Methods |
title_short |
Imaging Arctic Permafrost: Modeling for Choice of Geophysical Methods |
title_full |
Imaging Arctic Permafrost: Modeling for Choice of Geophysical Methods |
title_fullStr |
Imaging Arctic Permafrost: Modeling for Choice of Geophysical Methods |
title_full_unstemmed |
Imaging Arctic Permafrost: Modeling for Choice of Geophysical Methods |
title_sort |
imaging arctic permafrost: modeling for choice of geophysical methods |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/geosciences12100389 https://doaj.org/article/981761362dc64be3a1f10d26f7fc4bc6 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost Siberia |
genre_facet |
Arctic permafrost Siberia |
op_source |
Geosciences, Vol 12, Iss 389, p 389 (2022) |
op_relation |
https://www.mdpi.com/2076-3263/12/10/389 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences12100389 2076-3263 https://doaj.org/article/981761362dc64be3a1f10d26f7fc4bc6 |
op_doi |
https://doi.org/10.3390/geosciences12100389 |
container_title |
Geosciences |
container_volume |
12 |
container_issue |
10 |
container_start_page |
389 |
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1766322168698765312 |