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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
 
Creator Sharma, B.M.
Tayal, S.
Chakraborty, P.
Bharat, G.K.
 
Subject CHEMISTRY AND BIOGEOCHEMISTRY
METEOROLOGY AND CLIMATOLOGY
OCEANOGRAPHY AND LIMNOLOGY
 
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
 
Date 2015-07-02T12:56:21Z
2015-07-02T12:56:21Z
2015
 
Type Book Chapter
 
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
 
Language en
 
Relation Society of Earth Scientists Series;Tripathi, S.C.; ed.;
 
Rights An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2015] Springer.
 
Publisher Springer