Modeling sub-sea permafrost in the East Siberian Arctic Shelf

The Laptev Sea region

D. J. Nicolsky, V. E. Romanovsky, N. N. Romanovskii, A. L. Kholodov, N. E. Shakhova, I. P. Semiletov

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Models of sub-sea permafrost evolution vary significantly in employed physical assumptions regarding the paleo-geographic scenario, geological structure, thermal properties, initial temperature distribution, and geothermal heat flux. This work aims to review the underlying assumptions of these models as well as to incorporate recent findings, and hence develop an up-to-date model of the sub-sea permafrost dynamics at the Laptev Sea shelf. In particular, the sub-sea permafrost model developed here incorporates thermokarst and land-ocean interaction theory, and shows that the sediment salinity and a temperature-based parametrization of the unfrozen water content are critical factors influencing sub-sea permafrost dynamics. From the numerical calculations, we suggest development of open taliks may occur beneath submerged thaw lakes within a large area of the shelf.

Original languageEnglish
Article numberF03028
JournalJournal of Geophysical Research: Earth Surface
Volume117
Issue number3
DOIs
Publication statusPublished - 1 Sep 2012
Externally publishedYes

Fingerprint

permafrost
Permafrost
shelves
Arctic region
modeling
thermokarst
shelf sea
thermal properties
geological structure
Water content
heat flux
Lakes
Heat flux
salinity
Sediments
temperature
Temperature distribution
lakes
Thermodynamic properties
oceans

ASJC Scopus subject areas

  • Geophysics
  • Oceanography
  • Forestry
  • Aquatic Science
  • Ecology
  • Condensed Matter Physics
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Materials Chemistry
  • Palaeontology

Cite this

Modeling sub-sea permafrost in the East Siberian Arctic Shelf : The Laptev Sea region. / Nicolsky, D. J.; Romanovsky, V. E.; Romanovskii, N. N.; Kholodov, A. L.; Shakhova, N. E.; Semiletov, I. P.

In: Journal of Geophysical Research: Earth Surface, Vol. 117, No. 3, F03028, 01.09.2012.

Research output: Contribution to journalArticle

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