气候变化领域集成服务门户(CCPortal): The structure of a site with thermo-suffosion processes within bestyakh terrace of the lena river, according to geophysical data

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DOI	10.21782/KZ1560-7496-2017-5(16-26)
	The structure of a site with thermo-suffosion processes within bestyakh terrace of the lena river, according to geophysical data
	Olenchenko V.V.; Gagarin L.A.; Khristoforov I.I.; Kolesnikov A.B.; Efremov V.S.
发表日期	2017
ISSN	15607496
卷号	21 期号:5
英文摘要	The new data on geological structure of the area with developing thermo-suff osion processes obtained from electrical resistivity tomography and ground penetrating radar techniques allowed geoelectrical imaging of pressure fi ltration channels, and outlining potential thermo-suff osional craters and depressions. Based on the obtained geophysical characteristics, the phenomenon of permafrost degradation was discovered above the intrapermafrost aquifer, to a depth of the active layer base. Permafrost degradation is one of the forces that lead to the fi ltering channel collapse, prompting thereby the development of craters on the land surface. The collapsed top layer of the intra-permafrost aquifer changes the direction of groundwater fl ow, which, in turn, precludes the warming eff ect of the groundwater and provokes refreezing of the sand massif around. Thermo -suff osion craters. We found a correlation between variations in electrical resistivity in permafrost and changes in the vegetation canopy concentration: The frozen ground resistivity is higher for shaded areas overgrown with a larch stand, than for areas with a sparse growth of pine trees. The research results have provided insights about the formation mechanism of. Thermo -suff osion craters, and the geometry of water-bearing taliks of the supra/intrapermafrost complex. Thermo-suff osion, suff osion craters, permafrost, electrical resistivity tomography, ground penetrating radar. © 2018 Academic Publishing House Geo. All rights reserved.
学科领域	degradation; electrical resistivity; geoelectric field; geophysical survey; ground penetrating radar; groundwater flow; permafrost; temperature effect; tomography; Lena River; Russian Federation; Larix
语种	英语
scopus关键词	degradation; electrical resistivity; geoelectric field; geophysical survey; ground penetrating radar; groundwater flow; permafrost; temperature effect; tomography; Lena River; Russian Federation; Larix
来源期刊	Earth's Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119345
作者单位	Trofi Muk Institute of Petroleum Geology and Geophysics, SB RAS, 3, Acad. Koptyuga ave, Novosibirsk, 630090, Russian Federation; Melnikov Permafrost Institute, SB RAS, 36, Merzlotnaya str, Yakutsk, 677010, Russian Federation
推荐引用方式 GB/T 7714	Olenchenko V.V.,Gagarin L.A.,Khristoforov I.I.,et al. The structure of a site with thermo-suffosion processes within bestyakh terrace of the lena river, according to geophysical data[J],2017,21(5).
APA	Olenchenko V.V.,Gagarin L.A.,Khristoforov I.I.,Kolesnikov A.B.,&Efremov V.S..(2017).The structure of a site with thermo-suffosion processes within bestyakh terrace of the lena river, according to geophysical data.Earth's Cryosphere,21(5).
MLA	Olenchenko V.V.,et al."The structure of a site with thermo-suffosion processes within bestyakh terrace of the lena river, according to geophysical data".Earth's Cryosphere 21.5(2017).