Chemical characterization of meltwater from East Rathong glacier vis-a-vis Western Himalayan glaciers
DRS at CSIR-National Institute of Oceanography
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Title |
Chemical characterization of meltwater from East Rathong glacier vis-a-vis Western Himalayan glaciers
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Creator |
Sharma, B.M.
Tayal, S. Chakraborty, P. Bharat, G.K. |
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Subject |
CHEMISTRY AND BIOGEOCHEMISTRY
METEOROLOGY AND CLIMATOLOGY OCEANOGRAPHY AND LIMNOLOGY |
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Description |
Ice and meltwater samples from Rathong glacier and its pro-glacial stream Rathong chu, were collected during late winter season. Samples were analyzed to study the chemical composition , weathering, and geochemical processes in ice and meltwater at high altitudes. This study elucidate the variation of major cations (Li+, Mg2+, NH4 +, K+, Na+, Ca2+) and major anions (PO4 3-, F-, NO2 -, Cl-, SO4 2-, NO3 -) with respect to ionic concentration reported for glaciers in western Himalaya High correlation between Ca2+ and Mg2+, the contribution of (Ca2+ + Mg2+) to the total cations and high value of [(Ca2+ + Mg2+)/(Na+ + K+)] ratio suggests that the major source of dissolved ions in the meltwater is carbonate weathering. Enrichment of samples with NO3 - and NH4 + suggests that scavenging of HNO3 present in the atmosphere is a major contributor for these ions. High average value of Na+/Cl- and K+/Cl- ratio suggest that marine aerosols are not the only contributor to ionic composition. R-mode factor analysis was performed to understand the contribution of geochemical weathering and atmosphere in accumulating major cations and anions in ice and meltwater, which suggests that a majority of ions were from chemical weathering and post-depositional sources
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Date |
2015-07-02T12:56:21Z
2015-07-02T12:56:21Z 2015 |
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Type |
Book Chapter
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Identifier |
Dynamics of climate change and water resources of Northwestern Himalaya. ed. by: Joshi, R.; Kumar, K.; Palni, L.M.S.; Springer; Switzerland; 2015; 181-190
http://drs.nio.org/drs/handle/2264/4719 |
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Language |
en
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Relation |
Society of Earth Scientists Series;Tripathi, S.C.; ed.;
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Rights |
An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2015] Springer.
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Publisher |
Springer
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