A new inventory of High Mountain Asia surging glaciers derived from multiple elevation datasets since the 1970s

浪涌 冰川 地质学 冰川物质平衡 仰角(弹道) 自然地理学 堆积带 冰川形态 气候学 地貌学 地理 冰流 冰层 海冰 几何学 数学
作者
Lei Guo,Jia Li,Amaury Dehecq,Zhiwei Li,Xin Li,Jianjun Zhu
出处
期刊:Earth System Science Data [Copernicus Publications]
卷期号:15 (7): 2841-2861 被引量:13
标识
DOI:10.5194/essd-15-2841-2023
摘要

Abstract. Glacier surging is an unusual instability of ice flow, and inventories of surging glaciers are important for regional glacier mass balance studies and glacier dynamic studies. Glacier surges in High Mountain Asia (HMA) have been widely reported. However, the completeness of available inventories of HMA surging glaciers is hampered by the insufficient spatial and temporal coverage of glacier change observations or by the limitations of the identification methods. In this study, we established a new inventory of HMA surging glaciers based on glacier surface elevation changes and morphological changes over 4 decades. Three elevation change datasets based on four elevation sources (the KH-9 DEM, NASA DEM, COP30 DEM, and HMA DEM) and long-term Landsat satellite image series were utilized to assess the presence of typical surge features over two time periods (1970s–2000 and 2000–2020). A total of 890 surging and 336 probably or possibly surging glaciers were identified in HMA. Compared to the most recent inventory of surging glaciers in HMA, our inventory incorporated 253 previously unidentified surging glaciers. The number and area of surging glaciers accounted for ∼2.49 % (excluding glaciers smaller than 0.4 km2) and ∼16.59 % of the total glacier number and glacier area in HMA, respectively. Glacier surges were found in 21 of the 22 subregions of HMA (except for the Dzhungarsky Alatau); however, the density of surging glaciers is highly uneven. Glacier surges occur frequently in the northwestern subregions (e.g., Pamir and Karakoram) but less often in the peripheral subregions. The inventory further shows that surge activity is more likely to occur for glaciers with a larger area, longer length, and wider elevation range. Among glaciers with similar areas, the surging ones usually have steeper slopes than non-surging ones. The inventory and elevation change products of identified surging glaciers are available at https://doi.org/10.5281/zenodo.7961207 (Guo et al., 2023).
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
1秒前
无花果应助zg采纳,获得20
1秒前
杰尼龟的鱼完成签到 ,获得积分10
3秒前
复杂大象发布了新的文献求助10
3秒前
科研通AI2S应助aaaaaa采纳,获得10
3秒前
李爱国应助aaaaaa采纳,获得10
3秒前
害羞的败发布了新的文献求助10
4秒前
科目三应助执玉采纳,获得10
5秒前
curtisness完成签到,获得积分0
5秒前
安静洋葱完成签到,获得积分10
5秒前
这这完成签到,获得积分10
6秒前
7秒前
zxy完成签到,获得积分10
9秒前
yx_cheng应助欧阳正义采纳,获得10
10秒前
所所应助欧阳正义采纳,获得10
10秒前
13秒前
mzc发布了新的文献求助10
14秒前
14秒前
15秒前
老实觅松完成签到,获得积分10
15秒前
17秒前
Lucas应助Autumnyan采纳,获得10
18秒前
Wang完成签到,获得积分10
22秒前
23秒前
严小之完成签到,获得积分10
24秒前
24秒前
科研通AI5应助hanleiharry1采纳,获得10
25秒前
领导范儿应助刘先生采纳,获得10
25秒前
Zxc关闭了Zxc文献求助
26秒前
26秒前
Lzy发布了新的文献求助10
28秒前
生动元蝶完成签到,获得积分10
30秒前
34秒前
34秒前
yyyyyyyyjt发布了新的文献求助20
35秒前
35秒前
rmrb完成签到,获得积分10
38秒前
hanleiharry1发布了新的文献求助10
39秒前
刘先生发布了新的文献求助10
39秒前
YJY关闭了YJY文献求助
40秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
Immigrant Incorporation in East Asian Democracies 600
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
A Preliminary Study on Correlation Between Independent Components of Facial Thermal Images and Subjective Assessment of Chronic Stress 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3967367
求助须知:如何正确求助?哪些是违规求助? 3512602
关于积分的说明 11164375
捐赠科研通 3247533
什么是DOI,文献DOI怎么找? 1793886
邀请新用户注册赠送积分活动 874741
科研通“疑难数据库(出版商)”最低求助积分说明 804498