Modeling of thermic process of the arctic ecosystems

Irina Fedorova, Nikita Bobrov, Daria Pankova, Pavel Konosavskii, Natalia Alekseeva

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations
3 Downloads (Pure)

Abstract

Aquatic ecosystems of the Arctic are very sensitive to the climate change. Thermic processes inside and around water objects (lakes, rivers, wetlands) affected by endo- and exogenous factors and lead to talik formation and geoprocesses interaction and turnover. Hydrological and geophysical investigation in the Lena River delta have been carried out in spring and summer 2016-2018. Sublake and subriver taliks georadar and electrical resistivity tomography data were obtained in a field with following hydrological and hydrogeological math modeling. Thermal modeling in the program software COMSOL Multiphysics matches to measured talik thickness. Parameters for modeling were taken from hydrological and cytological studying. Imitation modeling have been done according to the change of abiotic parameters of water object catchments that lead modeling of phase transition between water and sediments as well as talik and permafrost ground. Imitation of climate change shows increase of talik and active layer thickness not strong, predicted heating of surface temperature also give valid results.

Translated title of the contributionМоделирование термических процессов в арктических экосистемах
Original languageEnglish
Title of host publication19th International Multidisciplinary Scientific GeoConference, SGEM 2019
Subtitle of host publicationProceedings
PublisherInternational Multidisciplinary Scientific Geoconference
Pages401-409
Number of pages9
ISBN (Print)9786197408812
DOIs
StatePublished - 30 Jun 2019
Event19th International Multidisciplinary Scientific Geoconference, SGEM 2019 - Болгария, Albena, Bulgaria
Duration: 9 Dec 201911 Dec 2019
Conference number: 19

Publication series

NameInternational Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
Volume19

Conference

Conference19th International Multidisciplinary Scientific Geoconference, SGEM 2019
Abbreviated titleSGEM2019
Country/TerritoryBulgaria
CityAlbena
Period9/12/1911/12/19

Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geology

Keywords

  • Arctic
  • Climate change
  • Geophysics
  • Hydrology
  • Talik
  • Water supply

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