Two-dimensional simulation of island permafrost degradation in Northeastern Tibetan Plateau
文献类型：期刊论文
| 作者 | Sun, Wen; Cao, Bin; Hao, Jiansheng5; Wang, Shengdi2; Clow, Gary D.; Sun, Yanhua2; Fan, Chengyan2; Zhao, Wenyu2; Peng, Xiaoqing2; Yao, Yingying3 |
| 刊名 | GEODERMA
 |
| 出版日期 | 2023-02-01 |
| 卷号 | 430页码:116330 |
| 关键词 | Island permafrost Permafrost thaw Two-dimensional simulation Lateral thaw |
| DOI | 10.1016/j.geoderma.2023.116330 |
| 文献子类 | Article |
| 英文摘要 | Despite the response of ground temperatures to increases in air temperature, discontinuous and isolated bodies of permafrost are strongly affected by lateral heat fluxes from adjacent unfrozen zones. However, many current simulations consider heat flow in only one-dimension (1D) and thus cannot represent two or three-dimensional effects. To address this issue, we use fine-scale in situ measurements and two-dimension (2D) heat conduction simulations and compare the simulated ground thermal evolution and degradation of island permafrost to a 1D simulation. The 2D simulation reasonably represented seasonal and interannual features of the ground thermal regime, such as temperature profile, thawing/frozen depth, and permafrost body width. Lateral thawing of the island permafrost was dominant, and was about one order of magnitude greater than the modelled vertical thaw. In the vertical direction, downward permafrost thaw caused by increase in air temperature rise was restricted by phase change of ground ice near the permafrost table during the simulation period, contributing little to the overall permafrost degradation. Rates of permafrost degradation in the 1D simulation were 1.6-1.8 times lower than the simulation considering lateral heat fluxes. The field monitoring and numerical simulation highlight the importance of coupling lateral heat transfer in permafrost models. |
| WOS关键词 | ERA5-LAND SOIL-TEMPERATURE ; ACTIVE LAYER ; THERMOKARST LAKE ; TALIK FORMATION ; BEILUHE BASIN ; VARIABILITY ; REGIONS ; THAW ; FLOW ; MAP |
| WOS研究方向 | Agriculture |
| WOS记录号 | WOS:000963007500001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/200827]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Dept Earth & Environm Sci, Xian 710049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 3.Clow, Gary D.] Univ Colorado Boulder, Inst Arctic & Alpine Res, Boulder, CO 80303 USA 4.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China 5.Chinese Acad Sci, Inst Tibetan Plateau Res, Natl Tibetan Plateau Data Ctr, Key Lab Tibetan Plateau Earth Syst Sci LATPES, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Wen,Cao, Bin,Hao, Jiansheng,et al. Two-dimensional simulation of island permafrost degradation in Northeastern Tibetan Plateau[J]. GEODERMA,2023,430:116330. |
| APA | Sun, Wen.,Cao, Bin.,Hao, Jiansheng.,Wang, Shengdi.,Clow, Gary D..,...&Zhang, Tingjun.(2023).Two-dimensional simulation of island permafrost degradation in Northeastern Tibetan Plateau.GEODERMA,430,116330. |
| MLA | Sun, Wen,et al."Two-dimensional simulation of island permafrost degradation in Northeastern Tibetan Plateau".GEODERMA 430(2023):116330. |
入库方式： OAI收割
来源：地理科学与资源研究所
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