The thermal response of permafrost to coastal floodplain flooding
The thermal response of permafrost to coastal floodplain flooding
复制标题
永久冻土对沿海洪泛区洪水的热响应
DOI:
10.1088/1748-9326/acba32
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发表时间:
2023
影响因子:
6.7
通讯作者:
Moulton, J. David
中科院分区:
文献类型:
--
作者:
Zhang, Yu;Jafarov, Elchin;Piliouras, Anastasia;Jones, Benjamin;Rowland, Joel C.;Moulton, J. David
Flooding of low-lying Arctic regions has the potential to warm and thaw permafrost by changing the surface reflectance of solar insolation, increasing subsurface soil moisture, and increasing soil thermal conductivity. However, the impact of flooding on permafrost in the continuous permafrost environment remains poorly understood. To address this knowledge gap, we used a combination of available flooding data on the Ikpikpuk delta and a numerical model to simulate the hydro-thermal processes under coastal floodplain flooding. We first constructed the three most common flood events based on water level data on the Ikpikpuk: snowmelt floods in the late spring and early summer, middle and late summer floods, and floods throughout the whole spring and summer. Then the impact of these flooding events on the permafrost was simulated for one-dimensional permafrost columns using the Advanced Terrestrial Simulator (ATSv1. 0), a fully coupled permafrost-hydrology and thermal dynamic model. Our results show that coastal floods have an important impact on coastal permafrost dynamics with a cooling effect on the surficial soil and a warming effect on the deeper soil. Cumulative flooding events over several years can cause continuous warming of the deep subsurface but cool down the surficial layer. Flood timing is a primary control of the vertical extent of the permafrost thaw and the active layer deepening.
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影响因子:
2
作者:
P. Barnes
通讯作者:
P. Barnes
影响因子:
1.2
作者:
P. Marsh;T. Schmidt
通讯作者:
T. Schmidt
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
M. Kanevskiy;Y. Shur;Gary Michaelson
通讯作者:
Gary Michaelson
DOI:
10.1007/s41063-018-0056-9
发表时间:
2018
期刊:
Arktos : the journal of arctic geosciences
影响因子:
--
作者:
Fuchs M;Grosse G;Jones BM;Strauss J;Baughman CA;Walker DA
通讯作者:
Walker DA
影响因子:
5.2
作者:
Guimond, Julia A.;Mohammed, Aaron A.;Walvoord, Michelle A.;Bense, Victor F.;Kurylyk, Barret L.
通讯作者:
Kurylyk, Barret L.