喜马拉雅冰川厚度绘图工具(HIGTHIM):绘制潜在冰川湖泊和现有湖泊扩展图的自动方法

IF 1.5 4区 地球科学 Q3 ECOLOGY
Pradeep Srinivasalu , Anil V. Kulkarni , S.N. Remya , Tejal Shirsat , Ajanta Goswami
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引用次数: 0

摘要

气候变暖是冰川大规模变化的驱动力,导致冰川变薄和后退。这些变化可能导致喜马拉雅山地区形成冰川湖,带来冰川湖溃决洪水(GLOF)的危险,对自然环境、人类财产和生命造成巨大破坏。本研究展示了一个名为 "喜马拉雅冰川厚度绘图器"(HIGTHIM)的半自动化工具,这是一个基于 ArcPy 模块的 Python 脚本。该工具可提供冰川的冰层厚度、冰床地形、潜在湖泊的位置和湖泊体积。它利用层流方程,通过应用表面速度和坡度来模拟冰层厚度。我们使用 HIGTHIM 在苏特莱杰盆地和比斯盆地对喜马拉雅西部面积为 618 平方公里的 132 块冰川进行了调查。结果显示有 118 个潜在的湖泊地点,总面积为 16 平方公里,体积为 269 × 106 立方米。HIGTHIM 工具提供的信息将有助于了解未来因冰川退化而形成的冰川湖泊的形成和发展过程。科学界需要这些数据来对冰湖溃决情况进行动态建模、建立水文模型以及降低冰湖溃决的风险。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Himalayan glacier thickness mapper (HIGTHIM) tool: An automated approach to map potential glacier lakes and expansion of existing lakes

Climate warming is the driving force behind the mass change of glaciers, resulting in their thinning and retreat. These changes could result in the formation of glacial lakes across the Himalayan landscape, posing a risk of glacial lake outburst flood (GLOF) hazards, causing enormous damage to the natural environment, human property, and lives. The present study demonstrates a semi-automated tool named 'Himalayan Glacier Thickness Mapper' (HIGTHIM), a Python script based on the ArcPy module. The tool provides the glacier's ice thickness, bed topography, location of the potential lake, and lake volume. It utilizes the laminar flow equation to model ice thickness by applying the surface velocity and slope. We used HIGTHIM in the Sutlej and Beas basins for 132 glaciers covering an area of 618 km2 in the Western Himalaya for this investigation. The results indicate 118 potential lake sites covering a total area of 16 km2 and a volume of 269 × 106 m3. The information provided by the HIGTHIM tool will be useful in understanding the formation and progression of future glacial lakes caused by deglaciation. Such data is required for the scientific community to perform dynamic modelling of outburst scenarios, hydrological modelling, and risk mitigation from GLOF.

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来源期刊
Polar Science
Polar Science ECOLOGY-GEOSCIENCES, MULTIDISCIPLINARY
CiteScore
3.90
自引率
5.60%
发文量
46
期刊介绍: Polar Science is an international, peer-reviewed quarterly journal. It is dedicated to publishing original research articles for sciences relating to the polar regions of the Earth and other planets. Polar Science aims to cover 15 disciplines which are listed below; they cover most aspects of physical sciences, geosciences and life sciences, together with engineering and social sciences. Articles should attract the interest of broad polar science communities, and not be limited to the interests of those who work under specific research subjects. Polar Science also has an Open Archive whereby published articles are made freely available from ScienceDirect after an embargo period of 24 months from the date of publication. - Space and upper atmosphere physics - Atmospheric science/climatology - Glaciology - Oceanography/sea ice studies - Geology/petrology - Solid earth geophysics/seismology - Marine Earth science - Geomorphology/Cenozoic-Quaternary geology - Meteoritics - Terrestrial biology - Marine biology - Animal ecology - Environment - Polar Engineering - Humanities and social sciences.
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