TY - GEN

T1 - Modeling of thermic process of the arctic ecosystems

AU - Fedorova, Irina

AU - Bobrov, Nikita

AU - Pankova, Daria

AU - Konosavskii, Pavel

AU - Alekseeva, Natalia

N1 - Conference code: 19

PY - 2019/6/30

Y1 - 2019/6/30

N2 - 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.

AB - 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.

KW - Arctic

KW - Climate change

KW - Geophysics

KW - Hydrology

KW - Talik

KW - Water supply

UR - http://www.scopus.com/inward/record.url?scp=85073332428&partnerID=8YFLogxK

U2 - 10.5593/sgem2019/3.1/S12.052

DO - 10.5593/sgem2019/3.1/S12.052

M3 - Conference contribution

AN - SCOPUS:85073332428

SN - 9786197408812

T3 - International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM

SP - 401

EP - 409

BT - 19th International Multidisciplinary Scientific GeoConference, SGEM 2019

PB - International Multidisciplinary Scientific Geoconference

T2 - 19th International Multidisciplinary Scientific Geoconference, SGEM 2019

Y2 - 9 December 2019 through 11 December 2019

ER -