Surficial geology and geomorphology of the Kumtor Gold Mine, Kyrgyzstan: human impacts on mountain glacier landsystems
Surficial geology and geomorphology of the Kumtor Gold Mine, Kyrgyzstan: human impacts on mountain glacier landsystems
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DOI：
10.1080/17445647.2015.1071720
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发表时间：
2016-10
期刊：
影响因子：
2.2
通讯作者：
D. Evans;M. Ewertowski;S. Jamieson;C. Orton
中科院分区：
文献类型：
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作者：
D. Evans;M. Ewertowski;S. Jamieson;C. Orton
摘要一张1：50，000比例尺的高山冰川陆地系统的地表地质和地貌图以及Akshiirak Krief Kumtor金矿作业对人类的影响，是根据2014年9月5日数字地球仪WorldView-2平台上的0.5 m分辨率全景锐化图像编制的。该地图描绘了11个地表地质单元，其中6个是根据自然遗传起源分类的，5个与最近人类对冰川和陆地表面过程的干扰有关。与历史图像相比，该地图记录了一些重要的、并非无关的冰冻圈对采矿活动的反应，包括：（a）由于向后退和变薄的冰川鼻倾倒弃渣，触发了人类引起的冰川加速事件或激增;（B）由于向冰芯冰碛的山谷地区倾倒弃渣的扩大，掩埋的冰川冰内部蠕动而重新激活;以及（c）由于人工移除大面积的冰川消融区，冰的下降速度加快，冰大量侵入矿井壁。
ABSTRACT A 1:50,000 scale map of the surficial geology and geomorphology of the mountain glacier landsystem and the human impacts of the Kumtor Gold Mine operations in the Akshiirak massif was compiled from a 0.5 m resolution pan-sharpened image from Digital Globe's WorldView-2 platform dated 5 September 2014. The map depicts 11 surficial geology units, 6 of which are classified according to natural genetic origins and 5 relating to recent human interference with glaciological and land surface processes. When compared to historical imagery the map records a number of important, not unrelated, cryospheric responses to mining activity, including: (a) the triggering of human-induced glacier speed-up events or surges due to dumping of mine spoil on receding and thinning glacier snouts; (b) the reactivation by internal creep of buried glacier ice due to the expansion of spoil dumping onto down valley areas of ice-cored moraine; and (c) accelerated ice drawdown and significant incursions of ice into the mine pit walls due to the artificial removal of substantial areas of glacier ablation zones.