Thermal effects of lateral supra-permafrost water flow around a thermokarst lake on the Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | You, Yanhui1; Yu, Qihao1; Pan, Xicai2; Wang, Xinbin1; Guo, Lei1; Wu, Qingbai1 |
| 刊名 | HYDROLOGICAL PROCESSES
 |
| 出版日期 | 2017-06-30 |
| 卷号 | 31期号:13页码:2429-2437 |
| 关键词 | permafrost supra-permafrost water flow thermo-erosion thermokarst lakes |
| ISSN号 | 0885-6087 |
| DOI | 10.1002/hyp.11193 |
| 通讯作者 | Yu, Qihao(yuqh@lzb.ac.cn) |
| 英文摘要 | Both the inflow and outflow of supra-permafrost water to lakes play important roles in the hydrologic process of thermokarst lakes. The accompanying thermal effects on the adjacent permafrost are required for assessing their influences on the development of thermokarst lakes. For these purposes, the lake water level, temperature dynamics, and supra-permafrost water flow of a lake were monitored on the Qinghai-Tibet Plateau. In addition, the spatial and temporal variation of the active layer thickness and permafrost distribution around the lake were investigated by combining ground penetrating radar, electrical resistivity tomography, and borehole temperature monitoring. The results revealed that the yearly unfrozen supra-permafrost water flow around the lake lasted approximately 5 months. The temperature and water level measurements during this period indicate that the lake water was recharged by relatively colder supra-permafrost water from the north-western lakeshore and was discharged through the eastern lakeshore. This process, accompanied by heat exchange with the underlying permafrost, might cause a directional difference of the active layer thickness and permafrost characteristics around the lake. Specifically, the active layer thickness variation was minimal, and the ice-rich permafrost was found adjacent to the lakeshore along the recharge groundwater pathways, whereas a deeper active layer and ice-poor permafrost were observed close to the lakeshore from which the warm lake water was discharged. This study suggests that the lateral flow of warm lake water can be a major driver for the rapid expansion of thermokarst lakes and provides clues for evaluating the relationships between the thermokarst expansion process and climate warming. |
| 收录类别 | SCI |
| WOS关键词 | GROUND-PENETRATING RADAR ; ELECTRICAL-RESISTIVITY TOMOGRAPHY ; ARCTIC COASTAL-PLAIN ; DISCONTINUOUS PERMAFROST ; BEILUHE BASIN ; ACTIVE LAYER ; CANADA ; TALIK ; ALASKA ; THAW |
| WOS研究方向 | Water Resources |
| WOS类目 | Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000403906900008 |
| 出版者 | WILEY |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557737 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Yu, Qihao |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Frozen Soils Engn Cold & Arid Reg, Environm & Engn Res Inst, Lanzhou, Peoples R China 2.Heidelberg Univ, Inst Environm Phys, Heidelberg, Germany |
| 推荐引用方式 GB/T 7714 | You, Yanhui,Yu, Qihao,Pan, Xicai,et al. Thermal effects of lateral supra-permafrost water flow around a thermokarst lake on the Qinghai-Tibet Plateau[J]. HYDROLOGICAL PROCESSES,2017,31(13):2429-2437. |
| APA | You, Yanhui,Yu, Qihao,Pan, Xicai,Wang, Xinbin,Guo, Lei,&Wu, Qingbai.(2017).Thermal effects of lateral supra-permafrost water flow around a thermokarst lake on the Qinghai-Tibet Plateau.HYDROLOGICAL PROCESSES,31(13),2429-2437. |
| MLA | You, Yanhui,et al."Thermal effects of lateral supra-permafrost water flow around a thermokarst lake on the Qinghai-Tibet Plateau".HYDROLOGICAL PROCESSES 31.13(2017):2429-2437. |
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来源：寒区旱区环境与工程研究所
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