scholarly journals Major ion chemistry of the Yarlung Tsangpo–Brahmaputra river: Chemical weathering, erosion, and CO2 consumption in the southern Tibetan plateau and eastern syntaxis of the Himalaya

2007 ◽  
Vol 71 (12) ◽  
pp. 2907-2935 ◽  
Author(s):  
Michael T. Hren ◽  
C. Page Chamberlain ◽  
George E. Hilley ◽  
Peter M. Blisniuk ◽  
Bodo Bookhagen
Keyword(s):  
Tibetan Plateau ◽  
Chemical Weathering ◽  
Ion Chemistry ◽  
Major Ion Chemistry ◽  
Brahmaputra River ◽  
Major Ion ◽  
Co2 Consumption ◽  
Southern Tibetan Plateau ◽  
Yarlung Tsangpo ◽  
The Himalaya

Major ion chemistry and water quality assessment of groundwater in the Shigaze urban area, Qinghai-Tibetan Plateau, China

2019 ◽  
Vol 20 (1) ◽  
pp. 335-347 ◽  
Author(s):  
Yingzhi Li ◽  
Jiutan Liu ◽  
Zongjun Gao ◽  
Min Wang ◽  
Leqi Yu
Keyword(s):  
Water Quality ◽  
Tibetan Plateau ◽  
Quality Assessment ◽  
Major Ions ◽  
Water Quality Assessment ◽  
Ion Chemistry ◽  
Major Ion Chemistry ◽  
Major Ion ◽  
The Mean ◽  
Over Time

Abstract Shigaze city is situated in the southwestern Tibetan Plateau and is the second largest city in the Tibet Autonomous Region. Groundwater is the major source of domestic and drinking water for urban inhabitants. In this study, the major ion chemistry and a water quality assessment of groundwater were studied using geochemical methods and fuzzy comprehensive assessment. Groundwater was classified as slightly alkaline soft and hard freshwater, and the influence of anthropogenic activities on groundwater was relatively weak. The dominant cations and anions were Ca2+ and Mg2+ and HCO3− and SO42−, respectively. Overall, the mean concentrations of major ions in groundwater increase gradually over time, except for NO3−; however, the mean value of pH decreases over time. Most groundwater samples belong to the type of HCO3-Ca, and the groundwater has a trend of evolution from HCO3-Ca to the mixed type. Rock weathering was the main hydrogeochemical process controlling groundwater hydrochemistry, and the dissolution of carbonate and silicate minerals were the primary contributors to the formation of the major ion chemistry of groundwater. Major ions of groundwater in the urban area of Shigaze are below the standard limits, and the groundwater is excellent for drinking according to the fuzzy comprehensive assessment.

Chemical weathering in the upstream and midstream reaches of the Yarlung Tsangpo basin, southern Tibetan Plateau

2021 ◽  
Vol 559 ◽  
pp. 119906
Author(s):  
Zhengliang Yu ◽  
Ni Yan ◽  
Guangjian Wu ◽  
Tianli Xu ◽  
Fei Li
Keyword(s):  
Tibetan Plateau ◽  
Chemical Weathering ◽  
Southern Tibetan Plateau ◽  
Yarlung Tsangpo

Major ion chemistry of the Ganga–Brahmaputra river systems, India

Nature ◽  
1984 ◽  
Vol 312 (5994) ◽  
pp. 538-541 ◽  
Author(s):  
M. M. Sarin ◽  
S. Krishnaswami
Keyword(s):  
Ion Chemistry ◽  
Major Ion Chemistry ◽  
River Systems ◽  
Brahmaputra River ◽  
Major Ion

scholarly journals Controls on the major-ion chemistry of the Dokriani glacier meltwaters, Ganga basin, Garhwal Himalaya, India

1999 ◽  
Vol 45 (149) ◽  
pp. 87-92 ◽  
Author(s):  
Syed Iqbal Hasnain ◽  
Renoj. J. Thayyen
Keyword(s):  
Chemical Weathering ◽  
Sediment Concentration ◽  
Garhwal Himalaya ◽  
Ion Chemistry ◽  
Major Ion Chemistry ◽  
Ganga Basin ◽  
Major Ion ◽  
Bhagirathi River ◽  
River Ganga

Abstract A detailed study of the major-ion chemistry of the Dokriani glacier meltwaters, feeding the Bhagirathi river, Ganga basin, Garhwal Himalaya, India, has been carried out to assess the role of active glaciers in the higher chemical-denudation rate (CDR) in this area. The CDR of the Dokriani glacier catchment is 321.6 t km-2 a-1, higher than in other glacierized catchments of the world, indicating intense chemical erosion in the glacierized catchments of the Himalaya. The dominance of Ca2+, HCO3 - and SO4 2- in meltwaters throughout the 6 month (May–October) ablation period suggests that the chemical weathering is dominated by coupled reactions involving sulphide oxidation and carbonate dissolution. Good positive correlation between SO4 2- and suspended-sediment concentration during July and August (r 2 = 0.72 and 0.67, respectively) suggests that the southwest monsoonal rainfall enhances the weathering of supraglacial moraine and contributes significant amounts of sulphate to the high meltwater discharges. The sulphate flux, as a proportion of combined (SO4 2- + HCO3 -) flux, also increased from 45% at 2 m3 s-1 to 63% at 10 m3 s-1.

scholarly journals Controls on the major-ion chemistry of the Dokriani glacier meltwaters, Ganga basin, Garhwal Himalaya, India

1999 ◽  
Vol 45 (149) ◽  
pp. 87-92 ◽  
Author(s):  
Syed Iqbal Hasnain ◽  
Renoj. J. Thayyen
Keyword(s):  
Chemical Weathering ◽  
Sediment Concentration ◽  
Garhwal Himalaya ◽  
Ion Chemistry ◽  
Major Ion Chemistry ◽  
Ganga Basin ◽  
Major Ion ◽  
Bhagirathi River ◽  
River Ganga

AbstractA detailed study of the major-ion chemistry of the Dokriani glacier meltwaters, feeding the Bhagirathi river, Ganga basin, Garhwal Himalaya, India, has been carried out to assess the role of active glaciers in the higher chemical-denudation rate (CDR) in this area. The CDR of the Dokriani glacier catchment is 321.6 t km-2 a-1, higher than in other glacierized catchments of the world, indicating intense chemical erosion in the glacierized catchments of the Himalaya. The dominance of Ca2+, HCO3- and SO42- in meltwaters throughout the 6 month (May–October) ablation period suggests that the chemical weathering is dominated by coupled reactions involving sulphide oxidation and carbonate dissolution. Good positive correlation between SO42- and suspended-sediment concentration during July and August (r2 = 0.72 and 0.67, respectively) suggests that the southwest monsoonal rainfall enhances the weathering of supraglacial moraine and contributes significant amounts of sulphate to the high meltwater discharges. The sulphate flux, as a proportion of combined (SO42- + HCO3-) flux, also increased from 45% at 2 m3 s-1 to 63% at 10 m3 s-1.

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