Models of Talik, Permafrost and Gas Hydrate Histories—Beaufort Mackenzie Basin, Canada
Models of talik, permafrost and gas hydrate (GH) histories below shallow lakes are investigated and compared to models of Beaufort Mackenzie Basin (BMB) GH occurrences to describe lacustrine inundation effects, which are compared against factors controlling the variations among Mackenzie Delta (MD)...
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ftdoajarticles:oai:doaj.org/article:3f46b1b93385482d89feb3ce096db0d2 2023-05-15T17:09:24+02:00 Models of Talik, Permafrost and Gas Hydrate Histories—Beaufort Mackenzie Basin, Canada Jacek Majorowicz Kirk Osadetz Jan Safanda 2015-06-01T00:00:00Z https://doi.org/10.3390/en8076738 https://doaj.org/article/3f46b1b93385482d89feb3ce096db0d2 EN eng MDPI AG http://www.mdpi.com/1996-1073/8/7/6738 https://doaj.org/toc/1996-1073 1996-1073 doi:10.3390/en8076738 https://doaj.org/article/3f46b1b93385482d89feb3ce096db0d2 Energies, Vol 8, Iss 7, Pp 6738-6764 (2015) gas hydrates permafrost Beaufort-Mackenzie Basin taliks Technology T article 2015 ftdoajarticles https://doi.org/10.3390/en8076738 2022-12-30T20:06:04Z Models of talik, permafrost and gas hydrate (GH) histories below shallow lakes are investigated and compared to models of Beaufort Mackenzie Basin (BMB) GH occurrences to describe lacustrine inundation effects, which are compared against factors controlling the variations among Mackenzie Delta (MD) permafrost, GH and talik occurrence. Models using a 2–4 °C boundary temperature range indicate that geological setting, specifically underlying lithology and porosity, are the primary controls in talik formation below lakes. Below a lake of any size, where the underlying lithology is sandy it is practically impossible to produce a pervasive talik or to completely degrade significant GH accumulations in response to the boundary condition thermal effects alone. Models predict that talik formation is, in such cases, restricted to the upper few tens of meters below the lake. Permafrost degradation appears common where porosities are <40% and water bottom temperatures reach 2–4 °C, in both marine and lacustrine settings. Where porosities are higher a thin GH stability zone can persist, even where deep taliks have formed. Article in Journal/Newspaper Mackenzie Basin Mackenzie Delta permafrost Directory of Open Access Journals: DOAJ Articles Canada Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Talik ENVELOPE(146.601,146.601,59.667,59.667) Energies 8 7 6738 6764 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
gas hydrates permafrost Beaufort-Mackenzie Basin taliks Technology T |
spellingShingle |
gas hydrates permafrost Beaufort-Mackenzie Basin taliks Technology T Jacek Majorowicz Kirk Osadetz Jan Safanda Models of Talik, Permafrost and Gas Hydrate Histories—Beaufort Mackenzie Basin, Canada |
topic_facet |
gas hydrates permafrost Beaufort-Mackenzie Basin taliks Technology T |
description |
Models of talik, permafrost and gas hydrate (GH) histories below shallow lakes are investigated and compared to models of Beaufort Mackenzie Basin (BMB) GH occurrences to describe lacustrine inundation effects, which are compared against factors controlling the variations among Mackenzie Delta (MD) permafrost, GH and talik occurrence. Models using a 2–4 °C boundary temperature range indicate that geological setting, specifically underlying lithology and porosity, are the primary controls in talik formation below lakes. Below a lake of any size, where the underlying lithology is sandy it is practically impossible to produce a pervasive talik or to completely degrade significant GH accumulations in response to the boundary condition thermal effects alone. Models predict that talik formation is, in such cases, restricted to the upper few tens of meters below the lake. Permafrost degradation appears common where porosities are <40% and water bottom temperatures reach 2–4 °C, in both marine and lacustrine settings. Where porosities are higher a thin GH stability zone can persist, even where deep taliks have formed. |
format |
Article in Journal/Newspaper |
author |
Jacek Majorowicz Kirk Osadetz Jan Safanda |
author_facet |
Jacek Majorowicz Kirk Osadetz Jan Safanda |
author_sort |
Jacek Majorowicz |
title |
Models of Talik, Permafrost and Gas Hydrate Histories—Beaufort Mackenzie Basin, Canada |
title_short |
Models of Talik, Permafrost and Gas Hydrate Histories—Beaufort Mackenzie Basin, Canada |
title_full |
Models of Talik, Permafrost and Gas Hydrate Histories—Beaufort Mackenzie Basin, Canada |
title_fullStr |
Models of Talik, Permafrost and Gas Hydrate Histories—Beaufort Mackenzie Basin, Canada |
title_full_unstemmed |
Models of Talik, Permafrost and Gas Hydrate Histories—Beaufort Mackenzie Basin, Canada |
title_sort |
models of talik, permafrost and gas hydrate histories—beaufort mackenzie basin, canada |
publisher |
MDPI AG |
publishDate |
2015 |
url |
https://doi.org/10.3390/en8076738 https://doaj.org/article/3f46b1b93385482d89feb3ce096db0d2 |
long_lat |
ENVELOPE(-136.672,-136.672,68.833,68.833) ENVELOPE(146.601,146.601,59.667,59.667) |
geographic |
Canada Mackenzie Delta Talik |
geographic_facet |
Canada Mackenzie Delta Talik |
genre |
Mackenzie Basin Mackenzie Delta permafrost |
genre_facet |
Mackenzie Basin Mackenzie Delta permafrost |
op_source |
Energies, Vol 8, Iss 7, Pp 6738-6764 (2015) |
op_relation |
http://www.mdpi.com/1996-1073/8/7/6738 https://doaj.org/toc/1996-1073 1996-1073 doi:10.3390/en8076738 https://doaj.org/article/3f46b1b93385482d89feb3ce096db0d2 |
op_doi |
https://doi.org/10.3390/en8076738 |
container_title |
Energies |
container_volume |
8 |
container_issue |
7 |
container_start_page |
6738 |
op_container_end_page |
6764 |
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1766065497985515520 |