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Extreme Rainfall Events and Associated Natural Hazards in Alaknanda Valley, Indian Himalayan Region 总被引:2,自引:0,他引:2
JOSHI Varun KUMAR Kireet 《山地科学学报》2006,3(3):228-236
Introduction The Himalaya is considered to be the youngest mountains on the earth, and is tectonically very active, and hence inherently (geologically) vulnerable to hazards. Extreme rainfall events, landslides, debris flows, torrents and flash floods due… 相似文献
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Simulation of a Himalayan cloudburst event 总被引:5,自引:0,他引:5
Someshwar Das Raghavendra Ashrit M. W. Moncrieff 《Journal of Earth System Science》2006,115(3):299-313
Intense rainfall often leads to floods and landslides in the Himalayan region even with rainfall amounts that are considered
comparatively moderate over the plains; for example, ‘cloudbursts’, which are devastating convective phenomena producing sudden
high-intensity rainfall (∼10 cm per hour) over a small area. Early prediction and warning of such severe local weather systems
is crucial to mitigate societal impact arising from the accompanying flash floods. We examine a cloudburst event in the Himalayan
region at Shillagarh village in the early hours of 16 July 2003. The storm lasted for less than half an hour, followed by
flash floods that affected hundreds of people. We examine the fidelity of MM5 configured with multiple-nested domains (81,
27, 9 and 3 km grid-resolution) for predicting a cloudburst event with attention to horizontal resolution and the cloud microphysics
parameterization. The MM5 model predicts the rainfall amount 24 hours in advance. However, the location of the cloudburst
is displaced by tens of kilometers 相似文献
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