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| Titel |
On the water hazards in the trans-boundary Kosi River basin |
| VerfasserIn |
N. Sh. Chen, G. Sh. Hu, W. Deng, N. Khanal, Y. H. Zhu, D. Han |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 13, no. 3 ; Nr. 13, no. 3 (2013-03-26), S.795-808 |
| Datensatznummer |
250018399
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| Publikation (Nr.) |
 copernicus.org/nhess-13-795-2013.pdf |
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| Zusammenfassung |
| The Kosi River is an important tributary of the Ganges River, which passes through
China, Nepal and India. With a basin area of 71 500 km2, the Kosi River
has the largest elevation drop in the world (from 8848 m of Mt Everest to
60 m of the Ganges Plain) and covers a broad spectrum of climate, soil,
vegetation and socioeconomic zones. The basin suffers from multiple water
related hazards including glacial lake outburst, debris flow, landslides,
flooding, drought, soil erosion and sedimentation. This paper describes the
characteristics of water hazards in the basin, based on the literature review
and site investigation covering hydrology, meteorology, geology,
geomorphology and socio-economics. Glacial lake outbursts are a huge threat to
the local population in the region and they usually further trigger
landslides and debris flows. Floods are usually a result of interaction
between man-made hydraulic structures and the natural environment. Debris
flows are widespread and occur in clusters. Droughts tend to last over long
periods and affect vast areas. Rapid population increase, the decline of
ecosystems and climate change could further exacerbate various hazards in the
region. The paper has proposed a set of mitigating strategies and measures.
It is an arduous challenge to implement them in practice. More investigations
are needed to fill in the knowledge gaps. |
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