Models of talik, permafrost and gas hydrate histories - Beaufort Mackenzie Basin, Canada

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F15%3A00472570" target="_blank" >RIV/67985530:_____/15:00472570 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.3390/en8076738" target="_blank" >http://dx.doi.org/10.3390/en8076738</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/en8076738" target="_blank" >10.3390/en8076738</a>

Result language

angličtina

Original language name

Models of talik, permafrost and gas hydrate histories - Beaufort Mackenzie Basin, Canada

Original language 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 degrees 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 degrees C, in both marine and lacustrine settings. Where porosities are higher a thin GH stability zone can persist, even where deep taliks have formed.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DC - Seismology, volcanology and Earth structure

OECD FORD branch

—

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Energies

ISSN

1996-1073

e-ISSN

—

Volume of the periodical

8

Issue of the periodical within the volume

7

Country of publishing house

CH - SWITZERLAND

Number of pages

27

Pages from-to

6738-6764

UT code for WoS article

000359897800026

EID of the result in the Scopus database

2-s2.0-84939167853