Estimating glacier mass balance in the source region of the Yangtze River during 2000 2020 through InSAR

被引：0

作者：

Li J. ^{[1
,2
,3
,4
]}

Li Z. ^{[1
,3
]}

Zhong W. ^{[1
,3
,4
]}

Gu Y. ^{[1
,3
,4
]}

Li L. ^{[5
]}

Guo L. ^{[1
,3
]}

Feng J.-J. ^{[1
,3
]}

机构：

[1] School of Geoscience and Info-physics, Central South University, Changsha

[2] State Key Laboratory of Geodesy and Earth's Dynamics, Wuhan

[3] Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Central South University, Ministry of Education, Changsha

[4] Laboratory of Geo-hazards Perception, Cognition and Predication, Central South University, Changsha

[5] Qinghai Remote Sensing Center for Natural Resources, Xining

来源：

Cehui Xuebao/Acta Geodaetica et Cartographica Sinica | 2024年 / 53卷 / 05期

基金：

中国国家自然科学基金;

关键词：

glacier mass balance; melting; runoff; source region of the Yangtze River; TanDEM-X images;

D O I：

10.11947/j.AGCS.2024.20230262

中图分类号：

学科分类号：

摘要：

This paper aims to estimate glacier mass balance in the source region of the Yangtze River, to investigate the factors that affect glacier mass balance, and to reveal the impacts of glacier mass changes on the runoff of the rivers. In particular, the InSAR technique and bistatic TerraSAR-X/TanDEM-X images were utilized to generate two DEMs that cover most of glaciers in the source region of the Yangtze River. The new DEMs were then differenced with SRTM DEM to obtain glacier thickness changes during 2000—2012 and 2000—2020, and a glacier mass density was used to converted the glacier thickness changes into glacier mass balance. The discrepancy between the derived glacier mass balance and the field measured glacier mass balance is only 0. 03 m w. e. a-1, indicating a high precision of the results. The glacier mass balance in source region of the Yangtze River during 2000—2012 and 2000—2020 were (— 0. 30 + 0. 02) m w. e. a-1 and (— 0. 45 + 0. 04) m w. e. -1, respectively. Glacier melting during 2012—2020 apparently intensified relative to that during 2000—2012. Rise of summer temperature and decease of summer precipitation were deemed as the main cause of glacier mass loss. Moreover, the glacier melting rate decreases from the southeastern part to the northwestern part of the study area. Lower summer temperature, smaller temperature rising speed, higher glacier altitude, higher glacier accumulation area ratio, steeper glacier surface of the west area may account for this phenomenon. During 2000—2020, the glacier mass loss in the basin of the Tuotuo River contributed 4. 4% of the runoff of the Tuotuo River, and those in the basins of the Tuotuo River and the Dangqu River contributed 2. 5% of the runoff of the Tongtian River, indicating that glacier mass loss had slight impact on the runoff the upper reaches of the Yangtze River. © 2024 SinoMaps Press. All rights reserved.

引用

页码：801 / 812

页数：11

共 44 条

[1]

LIU Shiyin, DING Yongjian, LI Jing, Et al., Glaciers in response to recent climate warming in western China[j], Quaternary Sciences, 26, 5, pp. 762-771, (2006)

[2]

HUGONNET R, MCNABB R, BERTHIER E, Et al., Accelerated global glacier mass loss in the early twenty-first century[j], Nature, 592, 7856, pp. 726-731, (2021)

[3]

YAO Tandong, BOLCH T, CHEN Deliang, Et al., The imbalance of the Asian water tower, Nature Reviews Earth &- Environment, 3, pp. 618-632, (2022)

[4]

KANG Shichang, ZHANG Yongjun, QIN Dahe, Et al., Recent temperature increase recorded in an ice core in the source region of Yangtze River, Chinese Science Bulletin, 52, 6, pp. 825-831, (2007)

[5]

PU Jianchen, YAO Tandong, YANG Meixue, Et al., Rapid decrease of mass balance observed in the Xiao (Lesser) Dongkemadi Glacier, in the central Tibetan Plateau, Hydrological Processes, 22, 16, pp. 2953-2958, (2008)

[6]

LI Zhen, XING Qiang, LIU Shiyin, Et al., Monitoring thickness and volume changes of the Dongkemadi Ice Field on the Qinghai-Tibetan Plateau (1969 2000) using Shuttle Radar Topography Mission and map data, International Journal of Digital Earth, 5, 6, pp. 516-532, (2012)

[7]

KE Linghong, DING Xiaoli, SONG Chunqiao, Estimation of mass balance of Dongkemadi glaciers with multiple methods based on multi-mission satellite data, Quaternary International, 371, pp. 58-66, (2015)

[8]

CHEN Anan, WANG Ninglian, LI Zhen, Et al., Region-wide glacier mass budgets for the tanggula mountains between ~-1969 and —-2015 derived from remote sensing data, Arctic, Antarctic, and Alpine Research, 49, 4, pp. 551-568, (2017)

[9]

XU Junli, SHANGGUAN Donghui, WANG Jian, Three-dimensional glacier changes in geladandong peak region in the central Tibetan Plateau, Water, 10, 12, (2018)

[10]

LIU Lin, JIANG Liming, WANG Hansheng, Et al., Estimation of glacier mass loss and its contribution to river runoff in the source region of the Yangtze River during 2000 2018, Journal of Hydrology, 589, (2020)

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