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Role of Glaciers in Watershed Hydrology: ''Himalayan Catchment'' Perspective : Volume 3, Issue 2 (15/07/2009)

By Thayyen, R. J.

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Book Id: WPLBN0003987464
Format Type: PDF Article :
File Size: Pages 34
Reproduction Date: 2015

Title: Role of Glaciers in Watershed Hydrology: ''Himalayan Catchment'' Perspective : Volume 3, Issue 2 (15/07/2009)  
Author: Thayyen, R. J.
Volume: Vol. 3, Issue 2
Language: English
Subject: Science, Cryosphere, Discussions
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Thayyen, R. J., & Gergan, J. T. (2009). Role of Glaciers in Watershed Hydrology: ''Himalayan Catchment'' Perspective : Volume 3, Issue 2 (15/07/2009). Retrieved from

Description: Wadia Institute of Himalayan Geology, 33-GMS Road, 248001, Dehradun, India. A large number of Himalayan glacier catchments are under the influence of humid climate with snowfall in winter (November–April) and South-West monsoon in summer (June–September) dominating the regional hydrology. Such catchments are defined as ''Himalayan catchment'', where the glacier melt water contributes to the river flow during the period of annual high flows produced by the monsoon. Other two major glacio-hydrological regimes of the Himalaya are winter snow dominated Alpine catchments of the Kashmir and Karakoram region and cold-arid regions of the Ladakh mountain range. Factors influencing the river flow variations in a ''Himalayan catchment'' were studied in a micro scale glacier catchment in the Garhwal Himalaya, covering an area of 77.8 km2. Discharge data generated from three hydrometric stations established at different altitudes of the Din Gad stream during the summer ablation period of 1998, 1999, 2000, 2001, 2003 and 2004. These data has been analysed along with winter/summer precipitation, temperature and mass balance data of the Dokriani glacier to study the role of the glacier and precipitation in determining the runoff variations along the stream continuum from the glacier snout to 2360 m a.s.l. Study shows that the inter-annual runoff variations in a ''Himalayan glacier catchment'' is directly linked with the precipitation rather than mass balance changes of the glacier. Study suggest that warming induced initial increase of glacier degraded runoff and subsequent decline is a glaciers mass balance response and cannot be translated as river flow response in a ''Himalayan catchment'' as suggested by the IPCC, 2007. Study also suggest that the glacier runoff critically influence the headwater river flows during the years of low summer discharge and proposes that the Himalayan catchment could experience higher river flows and positive glacier mass balance regime together in association with strong monsoon. This paper intended to highlight the importance of creating credible knowledge on the Himalayan cryospheric processes to develop a global outlook on river flow response to cryospheric change and locally sustainable water resources management strategies.

Role of glaciers in watershed hydrology: ''Himalayan catchment'' perspective

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