Reconstructing glacial lake outburst floods in the Poiqu River basin, central Himalaya

Geomorphology, Год журнала: 2024, Номер 449, С. 109063 - 109063

Опубликована: Янв. 10, 2024

Язык: Английский

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Progressively smaller glacier lake outburst floods despite worldwide growth in lake area

Nature Water, Год журнала: 2025, Номер unknown

Опубликована: Фев. 18, 2025

Язык: Английский

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Failure mechanism of a massive fault–controlled rainfall–triggered landslide in northern Pakistan

Landslides, Год журнала: 2024, Номер 21(11), С. 2741 - 2767

Опубликована: Авг. 19, 2024

Язык: Английский

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Glacial Lake Outburst Flood (GLOF) Hazard and Risk Management Strategies: A Global Overview

Water Resources Management, Год журнала: 2024, Номер unknown

Опубликована: Сен. 20, 2024

Язык: Английский

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Increasing risk of glacial lake outburst flood in Sikkim, Eastern Himalaya under climate warming

Remote Sensing Applications Society and Environment, Год журнала: 2024, Номер 36, С. 101286 - 101286

Опубликована: Июль 1, 2024

The increasing risk of Glacial Lake Outburst Floods (GLOFs) in the Eastern Himalaya is exacerbated by climate change-driven glacial ice mass loss, slowdown, and infrastructure projects high-altitude regions. To quantify current potential future disasters we update inventory lakes Sikkim Himalaya, identify most potentially dangerous (PDGL) model their peak discharge different scenarios. updated lake includes 232 (of >0.01 km2) covering a cumulative area 22.23 ± 0.10 km2. Our GLOF susceptibility mapping all moraine-dammed using an Analytic Hierarchy Process (AHP) reveals one as very high risk, eight 22 medium 56 low 18 risk. Further, apply dam break flood simulations for seven lakes. Results reveal highest discharges 9504 m3 s−1 8421 extreme case scenarios from Khanchung South Lhonak lakes, respectively. lowest 622 estimated normal outburst event Yongdi lake, with every scenario at least 447 reaching to Chungthang town. We find that more than 10,000 people face direct threat large-scale damage (∼1900 settlement, 5 bridges 2 hydropower plants). dataset, mapping, modeling results demonstrate urgent need install early warning system control breaching highly

Язык: Английский

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Spaciotemporal distribution characteristics of glacial lakes and the factors influencing the Southeast Tibetan Plateau from 1993 to 2023

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 15, 2025

The southeastern region of Tibet, which serves as the primary concentration area for marine-type glaciers, has fostered a multitude glacial lakes that are highly sensitive to global climate change. Glacial play crucial role in regulating freshwater ecosystems region, but they also pose significant threat local infrastructure and populations due flooding caused by lake outbursts. Currently, limited amount research focused on monitoring analysis Tibet. Using Google Earth Engine (GEE) data conjunction with meteorological data, this study examined variation characteristics Tibet from 1993 2023. is subjected segmentation extraction boundaries via FCN model. According findings, 2023, projected contain 3,877 lakes, encompassing an approximately 395.74 ± 22.72 km2. distribution follows pattern characterized relatively high southern low northern region. areas less than 0.1 km2 accounted 94.24%, whereas those exceeding 3.0 experienced least regional elevation using natural method reveals predominantly distributed within altitude range 4442 ~ 4909 m. fluctuations annual mean precipitation average temperature have decreased since 2008, while growth trajectories both number gradually stabilized. However, given backdrop slight increase gradual temperature, proliferation accelerate Nyingchi City's eastern western regions.

Язык: Английский

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Innovative approach for experimental investigation and monitoring and warning of the evolutionary patterns of dam body failure in earth dams

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Апрель 24, 2025

Язык: Английский

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Study of the patterns of variations in ice lakes and the factors influencing these changes on the southeastern Tibetan Plateau

Heliyon, Год журнала: 2024, Номер 10(16), С. e36406 - e36406

Опубликована: Авг. 1, 2024

The ice lakes in the southeastern Qinghai-Tibet Plateau have exhibited a pronounced expansion against backdrop of global warming, consequently amplifying local risk lake outburst disasters. However, surveys changes entire region consistently been incomplete due to prevalent high cloud density. On basis Landsat remote sensing images and Google Earth Engine (GEE) computing platform, this study, full convolution segmentation algorithm is utilized accurately comprehensively map regional distribution Tibet at consistent time intervals 1993, 2008, 2023. Furthermore, formation, distribution, dynamic these are investigated. numbers discovered 2023 were 2520, 3198, 3877, respectively. These covered areas approximately 337.64 ± 36.86 km

Язык: Английский

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Potential threats of glacial lake changes to the Sichuan-Tibet Railway

Journal of Glaciology, Год журнала: 2024, Номер unknown, С. 1 - 16

Опубликована: Апрель 22, 2024

Abstract The Sichuan-Tibet Railway, China's second inland railway to Tibet, is currently being constructed and will run between Chengdu Lhasa. It cross the southeastern Tibetan Plateau be surrounded by glacial lakes, some of which may pose a threat lake outburst flood (GLOF) events. Both specific location susceptibility these lakes are largely unknown. In this study, we mapped using declassified Corona KH-4 Hexagon KH-9 from 1960s Sentinel-2 imagery 2020 assessed their spatio-temporal changes. GLOF-susceptibility criteria were established based on historical GLOF results show that total area (number) has increased 22% (20%) 126.1 ± 2.4 km 2 (1662 lakes) in 153.6 11.1 (1994 2020. Of study identified 38 very high 85 lakes; mainly distributed along Bomi-Nyingchi section Parlung Zangbo River basin. Four require monitoring. insights can used mitigate risk GLOFs during construction maintenance Railway.

Язык: Английский

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Multi-hazard direct economic loss risk assessment on the Tibet Plateau

Geomatics Natural Hazards and Risk, Год журнала: 2024, Номер 15(1)

Опубликована: Июль 8, 2024

Natural disasters are becoming increasingly regional, frequent, and complex. Semi-quantitative risk assessments based on indices or relative levels lack quantitative parameters to characterize losses adequately. This study focuses earthquakes geological disasters, quantitatively assessing the of probable maximum loss (PML) from multi-hazard Tibet Plateau (TP) in terms both absolute values. The results indicate that total PML TP is estimated at 465.5 billion CNY, with a value 5.3%. towns very high 254.8 while 25.1%. Towns for may have higher fixed asset values, those imply vulnerability. Adjusting building structures reducing vulnerability buildings could effectively mitigate disaster caused by multiple hazards.

Язык: Английский

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