An inventory of glacial lakes in the Third Pole region and their changes in response to global warming

An inventory of glacial lakes in the Third Pole region and their changes in response to global warming
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第三极地区冰川湖清查及其响应全球变暖的变化

DOI:
10.1016/j.gloplacha.2015.05.013
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发表时间:
2015-08
影响因子:
3.9
通讯作者:
Wei Yang
Wei Yang
中科院分区:
地球科学1区
文献类型:
--
作者:
T;ong Yao;Hongjie Xie;Weicai Wang;Wei Yang

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第三极地区包括帕米尔-兴都库什-喀喇昆仑-喜马拉雅山和青藏高原,没有冰川湖普查。因此,目前缺乏关于全球变暖条件下冰川湖泊分布和变化的全面信息。在这项研究中,第三极的第一次冰川湖泊库存进行了~ 1990年,2000年和2010年使用Landsat TM/ETM +数据。研究了冰湖的空间分布、面积和时间变化。主要结果如下。(1)有4602、4981和5701个冰川湖(> 0.003km2)1990、2000和2010年的面积分别为553.9 ± 90、581.2 ± 97和682.4 ± 110 km 2;这些湖泊主要位于雅鲁藏布江(39%)、印度河(28%)和阿姆河(10%)流域。(2)小湖泊(< 0.2平方公里)对气候变化更敏感。(3)靠近冰川和海拔较高的湖泊,特别是那些与冰川末端相连的湖泊,面积发生了较大的变化。(4)冰川湖泊在数量和面积上都占主导地位(> 70%),与非冰川湖泊相比,总体上表现出更快的扩张趋势。我们的结论是,冰川融水可能发挥主导作用,在第三极大多数冰川湖泊的面积扩张。此外,冰川湖泊的模式与变暖的温度趋势和负冰川质量平衡模式相吻合。本文建立了一个重要的冰湖数据库,为第三极冰湖型突发性洪水灾害的长期监测和评价提供了依据。
No glacial lake census exists for the Third Pole region, which includes the Pamir-Hindu Kush-Karakoram-Himalayas and the Tibetan Plateau. Therefore, comprehensive information is lacking about the distribution of and changes in glacial lakes caused by current global warming conditions. In this study, the first glacial lake inventories for the Third Pole were conducted for ~ 1990, 2000, and 2010 using Landsat TM/ETM + data. Glacial lake spatial distributions, corresponding areas and temporal changes were examined. The significant results are as follows. (1) There were 4602, 4981, and 5701 glacial lakes (> 0.003 km2) covering areas of 553.9 ± 90, 581.2 ± 97, and 682.4 ± 110 km2in ~ 1990, 2000, and 2010, respectively; these lakes are primarily located in the Brahmaputra (39%), Indus (28%), and Amu Darya (10%) basins. (2) Small lakes (< 0.2 km2) are more sensitive to climate changes. (3) Lakes closer to glaciers and at higher altitudes, particularly those connected to glacier termini, have undergone larger area changes. (4) Glacier-fed lakes are dominant in both quantity and area (> 70%) and exhibit faster expansion trends overall compared to non-glacier-fed lakes. We conclude that glacier meltwater may play a dominant role in the areal expansion of most glacial lakes in the Third Pole. In addition, the patterns of the glacier-fed lakes correspond well with warming temperature trends and negative glacier mass balance patterns. This paper presents an important database of glacial lakes and provides a basis for long-term monitoring and evaluation of outburst flood disasters primarily caused by glacial lakes in the Third Pole.
DOI: 10.5194/tc-8-1661-2014
发表时间: 2014-09
期刊: The Cryosphere
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作者:
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DOI: 10.1002/2014jd021615
发表时间: 2014-07
影响因子: 4.4
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DOI: 10.1371/journal.pone.0083973
发表时间: 2013
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影响因子: 3.7
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