气候变化领域集成服务门户(CCPortal): Glacier Mass Balance Pattern and Its Variation Mechanism in the West Kunlun Mountains in Tibetan Plateau

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DOI	10.3390/rs14112634
	Glacier Mass Balance Pattern and Its Variation Mechanism in the West Kunlun Mountains in Tibetan Plateau
	Gao, Le; Yang, Xiaofeng; Qi, Jifeng; Chen, Wenfeng
通讯作者	Yang, XF (通讯作者)
发表日期	2022
EISSN	2072-4292
卷号	14 期号:11
英文摘要	Mass balance observations are beneficial for assessing climate change in different world regions. This study analyzed the glacier elevation change, ice flux divergence, and surface mass balance (SMB) in the West Kunlun Mountains (WKM) on the Tibetan Plateau using remote sensing data, including satellite altimetry, glacier surface velocity, and thickness fields. Seventeen local glaciers were examined in detail and showed varying surface elevation changes from -0.39 +/- 0.11 to 0.83 +/- 0.10 m/a. Overall, we obtained a reasonably rapid elevation trend of 0.21 +/- 0.14 m/a. By combining the ice flux divergence and surface mass balance, the overall thickness change of the WKM glacier over time is almost zero, and the WKM glacier shows a positive mass balance of 0.21 +/- 0.98 m/a. Moreover, the ice flux divergence is more significant on the ice tongue than in the flat region due to the more considerable gradient of surface velocity and thickness fields. We found that glacier heterogeneity dynamics were associated with a surging dynamic mechanism concentrated in the glacier tongue and were induced by inner terrain instabilities. The glacier surging causes a drastic drop in glacier elevation but does not cause a glacier mass gain or loss, and it has an enhanced effect on the ice flux divergence. Therefore, glacier surging is the main reason for the decline of the two glaciers monitored. In addition, the long-term meteorological data analysis found that, since 2000, the air temperature warming hiatus may have balanced the three glaciers, and significantly increasing precipitation variation may cause the glacier to thicken the most.
关键词	ICESAT VERIFICATION KARAKORAM
英文关键词	satellite altimetry; glacier elevation change; glacier inner terrain; glacier surging; ice flux divergence; surface mass balance; climate change
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000809005700001
来源期刊	REMOTE SENSING
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260554
推荐引用方式 GB/T 7714	Gao, Le,Yang, Xiaofeng,Qi, Jifeng,et al. Glacier Mass Balance Pattern and Its Variation Mechanism in the West Kunlun Mountains in Tibetan Plateau[J]. 中国科学院青藏高原研究所,2022,14(11).
APA	Gao, Le,Yang, Xiaofeng,Qi, Jifeng,&Chen, Wenfeng.(2022).Glacier Mass Balance Pattern and Its Variation Mechanism in the West Kunlun Mountains in Tibetan Plateau.REMOTE SENSING,14(11).
MLA	Gao, Le,et al."Glacier Mass Balance Pattern and Its Variation Mechanism in the West Kunlun Mountains in Tibetan Plateau".REMOTE SENSING 14.11(2022).