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Dynamics of suspended sediment load with respect to summer discharge and temperatures in Shaune Garang glacierized catchment, Western Himalaya
Department of Environmental Science, Sharda University, Greater Noida.
Department of Environmental Science, Sharda University, Greater Noida.
Department of Environmental Science, Sharda University, Greater Noida.
Department of Environmental Science, Sharda University, Greater Noida.
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2018 (engelsk)Inngår i: Acta Geophysica, ISSN 1895-6572, E-ISSN 1895-7455, Vol. 66, nr 5, s. 1109-1120Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The observed and predicted rise in temperature will have deleterious impact on melting of snow and ice and form of precipitation which is already evident in Indian Himalayan Region. The temperature-dependent entities like discharge and sediment load will also vary with the observed and predicted rise posing environmental, social and economic threat in the region. There is little known about sediment load transport in relation to temperature and discharge in glacierized catchments in Himalaya mainly due to the scarcity of ground-based observation. The present study is an attempt to understand the suspended sediment load and transportation in relation to variation in discharge and temperature in the Shaune Garang catchment. The result shows strong dependence of sediment concentration primarily on discharge (R2 = 0.84) and then on temperature (R2 = 0.79). The catchments with similar geological and climate setting were observed to have comparatively close weathering rate. The sediment load was found to be higher in the catchments in eastern and central part of Indian Himalayan Region in comparison with western part due to dominance of Indian Summer Monsoon leading to high discharge. The annual physical weathering rate in Shaune Garang catchment was found to be 411 t km−2 year−1 which has increased from 327 t km−2 year−1 in around three decades due to rise in temperature causing increase in discharge and proportion of debris-covered glacierized area.

sted, utgiver, år, opplag, sider
Springer Publishing Company, 2018. Vol. 66, nr 5, s. 1109-1120
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Forskningsprogram
Atmosfärsvetenskap
Identifikatorer
URN: urn:nbn:se:ltu:diva-70166DOI: 10.1007/s11600-018-0184-4OAI: oai:DiVA.org:ltu-70166DiVA, id: diva2:1235693
Merknad

Validerad;2018;Nivå 2;2018-12-05 (svasva)

Tilgjengelig fra: 2018-07-26 Laget: 2018-07-26 Sist oppdatert: 2018-12-05bibliografisk kontrollert

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