Center for Glaciology

Dehradun, India

Center for Glaciology

Dehradun, India

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Ahluwalia R.S.,Center for Glaciology | Rai S.P.,National Institute of Hydrology | Gupta A.K.,Wadia Institute of Himalayan Geology | Gupta A.K.,Indian Institute of Technology Kharagpur | And 4 more authors.
Natural Hazards | Year: 2016

During middle June 2013, Kedarnath valley in Rudraprayag district of Uttarakhand, India, was affected by catastrophic rainfall episode that caused massive loss of human lives and damage to the properties and livestock. Isotopic signatures of rainfall, snow/ice melt water and river water of Mandakani River were measured from 25 May 2013 to 16 June 2013, and these isotopic signatures are used to estimate the contribution of rainfall-derived runoff on flooding day. The result indicates that during the course of flood in Mandakani River, isotopic signature of river water was −15.97 ‰, whereas average isotopic signature of river before the flood shows −10.39 ‰. By using the two-component mixed model, the contribution of rainfall-derived runoff is found to be 78 % and the contribution of snow/ice melt runoff is 22 % during the flash flood in Mandakani River surrounding the Shri Kedarnath Temple, Central Himalaya, India. © 2016 Springer Science+Business Media Dordrecht


Ahluwalia R.S.,Center for Glaciology | Rai S.P.,National Institute of Hydrology | Jain S.K.,National Institute of Hydrology | Dobhal D.P.,Center for Glaciology | Kumar A.,Resilience
Journal of Water and Climate Change | Year: 2015

In the present study, an attempt has been made to estimate the snow/glacier melt contribution in the head water region of the Beas Basin using a conventional hydrograph approach and a modeling (SNOWMOD) technique. The discharge and other meteorological data from 1996 to 2008 of the Manali site were used for the study. The results of SNOWMOD modeling reveal that snow/glacier melt contribution to the Beas River in the head water region varied between 52 (minimum) and 56% (maximum) with an annual average of 54% during the study period. The results obtained using the conventional approach showed the contribution of snow/glacier melt varied between 48 (minimum) and 52% (maximum) with an annual average of 50%. Results obtained using both techniques corroborate each other. This study reveals that the Beas River is mainly sustained by the snow/ glacier melt contribution in the head water region. © IWA Publishing 2015.

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