Academic Journal
Quantitative prioritization of potentially critical glacial Lakes in the Indus River basin using satellite derived parameters
| العنوان: | Quantitative prioritization of potentially critical glacial Lakes in the Indus River basin using satellite derived parameters |
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| المؤلفون: | Ankit Gupta, Ruhi Maheshwari, Nibedita Guru, Sweta, B. Simhadri Rao, P. Venkat Raju, V. Venkateshwar Rao |
| المصدر: | Geocarto International, Vol 37, Iss 25, Pp 7508-7530 (2022) |
| بيانات النشر: | Taylor & Francis Group |
| سنة النشر: | 2022 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | indus river basin, glacial lake inventory, glacial lake outburst flood, remote sensing, quantitative assessment, Physical geography, GB3-5030 |
| الوصف: | Glacial Lake Outburst Floods (GLOFs) in a deglaciating environment, representing significant threat to downstream people and infrastructure, increasing the necessity of prioritization and assessment of potentially critical glacial lakes (PCGLs). In this current study, a comprehensive updated inventory of glacial lakes for the Indus River basin has been prepared, resulting in 5335 lakes (≥ 0.0025 ± 0.0006 km2), covering a total area of 173.95 ± 10.13 km2. Parameters have been derived using satellite data for two purposes, ‘preliminary screening’ and ‘quantitative assessment’. Using 4 parameters, 367 lakes were preliminary screened-in for further analysis, and 6 quantitative parameters were analysed using Equal Weights (EW) and Unequal Weights methods (UEW). These both methods were applied for two scenarios, scenario-1 which considers 73 lakes (≥ 0.1 km2), and scenario-2 which considers all 367 preliminary screened-in lakes (≥ 0.02 km2). UEW outperformed EW analysis and identified 20 and 48 high potential lakes for scenario-1 and scenario-2 respectively, where all 20 lakes of scenario-1 have been found in common with those of scenario-2, with a difference in their rank. But only 10 of them have storage volume ≥ 10 MCM and has been flagged as high-risk lakes, of which 6 are end-moraine dammed lakes and have been considered as PCGLs, due to their high bursting potential and self-destructive nature. Rest 4 high risk lakes along with remaining 38 lakes with volume < 10 MCM, are considered as critical lakes in case of dynamic mode of failure, caused due to mass movement of avalanche, landslide, heavy precipitation, etc. Highlights 152 historic GLOF events has been reported from 28 sites that occurred in Indus River basin Updated glacial lake inventory of Indus River basin using high resolution IRS satellite data Total of 5335 GL’s were mapped, and 48 of them are identified as high potential lakes UEW outperformed EW method to evaluate weighted integrated index for potentiality assessment 6 lakes are found to be as ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1010-6049 1752-0762 |
| Relation: | http://dx.doi.org/10.1080/10106049.2021.1975831; https://doaj.org/toc/1010-6049; https://doaj.org/toc/1752-0762; https://doaj.org/article/69aa25a0879941eabb5b5f4bdcd1f97e |
| DOI: | 10.1080/10106049.2021.1975831 |
| الاتاحة: | https://doi.org/10.1080/10106049.2021.1975831 https://doaj.org/article/69aa25a0879941eabb5b5f4bdcd1f97e |
| رقم الانضمام: | edsbas.C596ED37 |
| قاعدة البيانات: | BASE |
| تدمد: | 10106049 17520762 |
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| DOI: | 10.1080/10106049.2021.1975831 |