دورية أكاديمية
Causes and effects of Shisper glacial lake outburst flood event in Karakoram in 2022
| العنوان: | Causes and effects of Shisper glacial lake outburst flood event in Karakoram in 2022 |
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| المؤلفون: | Sandeep Kumar Mondal, Vatsal D. Patel, Rishikesh Bharti, Ramesh P. Singh |
| المصدر: | Geomatics, Natural Hazards & Risk, Vol 14, Iss 1 (2023) |
| بيانات النشر: | Taylor & Francis Group, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Environmental technology. Sanitary engineering LCC:Environmental sciences LCC:Risk in industry. Risk management |
| مصطلحات موضوعية: | Himalaya, Hunza Karakoram glacial lake outburst flood, water quality, remote sensing, natural hazard, Environmental technology. Sanitary engineering, TD1-1066, Environmental sciences, GE1-350, Risk in industry. Risk management, HD61 |
| الوصف: | AbstractKarakoram Himalayas are vulnerable to glacial lake outburst floods (GLOFs), which cause catastrophic floods in the surrounding areas. The increasing natural and anthropogenic activities, especially in the Indo-Gangetic Plains at the southern flank of the towering Himalayas, could be the cause of climate change affecting the frequency of the natural hazards in the Himalayas. In the present study, a detailed analysis of the Shisper Lake breach of 7 May 2022 is carried out using satellite remote sensing. A decreasing trend in the glacial mass balance is observed between 2017 and 2021; in this period, frequent GLOF episodes occurred. A pronounced decline in the snow cover and glacial debris (before the cascade) and an abnormal increase in land surface temperature (LST) retrieved from satellite data could be responsible for the enhanced snow/glacial melting prior to the breach. Alteration in glacial mobility (cm/12 days) is observed at the locations where the glacier melts due to an increase in LST with increased debris cover. In the paper, we have studied changes in water quality and land cover along the stream after the GLOF. An increment in normalized difference turbidity index (NDTI) is observed before the flood showing turbulence and sediment load. Increased glacial melt contribution into the stream results in increased flow rate and decreased water quality as observed through normalized difference water index (NDWI) and normalized difference chlorophyll index (NDCI), near the Karakoram Highway Bridge. Sentinel-1 backscatter coefficient indicates increased discharge from the melting of glaciers. A significant reduction in co-flood coherence is observed, attributed to the bridge collapse and severe bank erosion. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 19475705 1947-5713 1947-5705 |
| Relation: | https://doaj.org/toc/1947-5705; https://doaj.org/toc/1947-5713 |
| DOI: | 10.1080/19475705.2023.2264460 |
| URL الوصول: | https://doaj.org/article/efef61d374494ea78e2dd8f12e5b2e67 |
| رقم الأكسشن: | edsdoj.fef61d374494ea78e2dd8f12e5b2e67 |
| قاعدة البيانات: | Directory of Open Access Journals |
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Full Text Finder | تدمد: | 19475705 19475713 |
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| DOI: | 10.1080/19475705.2023.2264460 |