Transient Freeze‐Thaw Deformation Responses to the 2018 and 2019 Fires Near Batagaika Megaslump, Northeast Siberia
Transient Freeze‐Thaw Deformation Responses to the 2018 and 2019 Fires Near Batagaika Megaslump, Northeast Siberia
复制标题
西伯利亚东北部巴塔盖卡巨型塌陷区附近 2018 年和 2019 年火灾的瞬态冻结-解冻变形响应
DOI:
10.1029/2022jf006817
复制
发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Iwahana, G.
中科院分区:
文献类型:
--
作者:
Yanagiya, K.;Furuya, M.;Danilov, P.;Iwahana, G.
Wildfires in Arctic regions impact landforms via permafrost degradation and subsequent deformation that can last for many years. However, it remains uncertain on if and how much deformations occur, and what controls their magnitude, particularly during the first couple of years. Here, we examine the transient post‐fire deformation responses near the Batagaika megaslump, which is the world's largest retrogressive thaw slump at Batagay, Sakha Republic. There were wildfires in the summers of 2018 and 2019 on the same slope, which could trigger the formation of another megaslump; many fires occurred nearby in 2019. We use interferometric synthetic aperture radar (InSAR) to measure surface displacements, including both post‐fire and span‐fire images. We also perform onsite measurements of temperature and thaw depth around the two scars near Batagaika megaslump in 2019, 2020, and 2021 and around the 2014 scar in 2019. At the three fire scars formed in 2018 and 2019, we demonstrate year‐to‐year and location‐specific changes in the amplitude of subsidence, heave, and duration. The 2018 scar shows cumulative subsidences of up to 10 cm by March 2021, more clearly than the nearby 2019 scar. On the other hand, another 2019 scar adjacent to the 2014 scar shows up to 13 cm net subsidence during the first span‐fire year, although the subsiding area is limited. These diverse transient post‐fire responses demonstrate that under the yedoma area the spatial heterogeneities of the active layer depth and the timing of fires will control subsequent thermokarst processes.
登录
查看更多内容
影响因子:
4.9
作者:
J. McCarty;J. Aalto;Ville-Veikko Paunu;S. Arnold;S. Eckhardt;Z. Klimont;J. Fain;N. Evangeliou-
通讯作者:
J. McCarty;J. Aalto;Ville-Veikko Paunu;S. Arnold;S. Eckhardt;Z. Klimont;J. Fain;N. Evangeliou-
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
V. Kunitsky;I. Syromyatnikov;Lutz Schirrmeister;Yu.B. Skachov;G. Grosse;S. Wetterich;M. Grigoriev
通讯作者:
M. Grigoriev
影响因子:
--
作者:
K. Yoshikawa;W. Bolton;V. Romanovsky;M. Fukuda;L. Hinzman
通讯作者:
K. Yoshikawa;W. Bolton;V. Romanovsky;M. Fukuda;L. Hinzman
影响因子:
6.7
作者:
G. Frost;R. Loehman;L. Saperstein;M. Macander;P. Nelson;D. Paradis;S. Natali
通讯作者:
S. Natali
影响因子:
2.3
作者:
J. Murton;T. Opel;P. Toms;A. Blinov;M. Fuchs;Jamie C. Wood;A. Gärtner;S. Merchel;G. Rugel;G. Savvinov;S. Wetterich
通讯作者:
J. Murton;T. Opel;P. Toms;A. Blinov;M. Fuchs;Jamie C. Wood;A. Gärtner;S. Merchel;G. Rugel;G. Savvinov;S. Wetterich