Chemical weathering and atmospheric CO2 consumption in the semi-arid Swarnamukhi basin (Peninsular India) estimated from river water geochemistry

Patel, Priyanka; Raju, N. Janardhana; Subramanian, V.; Goßel, Wolfgang; Wycisk, Peter

doi:10.1016/j.apgeochem.2020.104520

Cited by 11 publications

(2 citation statements)

References 44 publications

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“…The silicate weathering rates of the Himalayan river systems such as Ganga [10.2-15.2 t km −2 y −1 , (Krishnaswami et al 1999;Gaillardet et al 1999;Dalai et al 2002)], Indus [3.8 t km −2 y −1 , (Gaillardet et al 1999)]; Bramhmputra [6.47 t km −2 y −1 , (Das et al 2016)], Narmada [12.67 t km −2 y −1 ; (Gupta et al 2011)], Tapti (7.32 t km −2 y −1 ), Kavery [9.44 t km −2 y −1 , (Pattanaik et al 2013)] are all lower than the Payaswini-Chandragiri river system (Table 3). And the annual SWR of the study area was higher than the river Mahanadi [32 t km −2 y −1 , (Bastia and Equeenuddin 2019)] and Swarnamukhi river [30.57 t km −2 y −1 (Patel et al 2020)]. Also, SWR of the study area was higher than the global watersheds like Amazon (13 t km −2 y −1 ), Mackenzie (1.8 t km −2 y −1 ), Parana (5 t km −2 y −1 ), Congo-Zaire (4.2 t km −2 y −1 ), Orinoco (9.5 t km −2 y −1 ), Mekong (14.3 t km −2 y −1 ) and Rio Icacos (40 t km −2 y −1 ) (Gaillardet et al 1999).…”

Section: Silicate Weathering Ratementioning

confidence: 97%

Chemical weathering and carbon dioxide consumption in a small tropical river catchment, southwestern India

et al. 2021

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Studies done on small tropical west-flowing river catchments located in the Western Ghats in southwestern India have suggested very intense chemical weathering rates and associated CO2 consumption. Very less studies are reported from these catchments notwithstanding their importance as potential sinks of atmospheric CO2 at the global scale. A total of 156 samples were collected from a small river catchment in the southwestern India, the Payaswini–Chandragiri river Basin, during pre-monsoon, monsoon and post-monsoon seasons in 2016 and 2017, respectively. This river system comprises two small rivers originating at an elevation of 1350 m in the Western Ghats in peninsular India. The catchment area is dominated by biotite sillimanite gneiss. Sodium is the dominant cation, contributing ~ 50% of the total cations, whereas HCO3− contributes ~ 75% of total anions. The average anion concentration in the samples varied in the range HCO3− > Cl− > SO42− > NO3− > F−, whereas major cation concentration varied in the range Na+ > Ca2+ > Mg2+ > K+. The average silicate weathering rate (SWR) was 42 t km−2 y−1 in the year 2016 and 36 t km−2 y−1 in 2017. The average annual carbon dioxide consumption rate (CCR) due to silicate rock weathering was 9.6 × 105 mol km−2y−1 and 8.3 × 105 mol km−2 y−1 for 2016 and 2017, respectively. The CCR in the study area is higher than other large tropical river catchments like Amazon, Congo-Zaire, Orinoco, Parana and Indus because of its unique topography, hot and humid climate and intense rainfall.

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Section: Silicate Weathering Ratementioning

confidence: 97%

Chemical weathering and carbon dioxide consumption in a small tropical river catchment, southwestern India

et al. 2021

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“…The studies on water chemistry emphasizing on ions has been conducted globally for determining water quality and its controlling factors by (Sahoo et al 2019;Ayogu et al 2020;Liu et al 2020;Ogwueleka & Christopher 2020). Similarly in India, physicochemical studies of rivers have been conducted by several researchers (Sharma & Subramanian 2008;Gupta et al 2011;Ghosh et al 2019;Patel et al 2020). Recent studies on water quality of river Narmada have been carried by (Sharma et al 2013;Gupta et al 2017;Gupta et al 2020;Mishra & Kumar 2020).…”

Section: Introductionmentioning

confidence: 99%

Mechanisms controlling major ion chemistry and its suitability for irrigation of Narmada River, India

et al. 2021

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Surface water chemistry of the upper Narmada River was investigated at 13 different locations for 4 consecutive years (2017 to 2020) during pre- and post-monsoon seasons. The main objective of the study was to identify the processes governing the water chemistry of Narmada River and evaluate its suitability for irrigation. The physical parameters estimated were; pH (7.9 ± 0.4 for pre- and 8 ± 0.4 for post-monsoon seasons), EC (322.8±93.3 μS/cm for pre- and 312.1±80.2 μS/cm for post-monsoon) and TDS (203.4±41.5 mg/L for pre-and 213.4±48 mg/L for post-monsoon). The obtained concentration of cations and anions were in the order of Ca++ > Na+ > Mg++> K+ and HCO3−> Cl−>SO4−> NO3−> PO4− respectively. Thus, the water of Narmada was found to be alkaline in nature. Piper diagram inferred that the water was dominated by Ca-Mg-HCO3− type of hydrochemical faces. Gibb's plot clarified that rock-water interaction regulates the ion chemistry of the Narmada. Various indices like sodium percentage (Na%), sodium absorption ration (SAR), Kelly index (Ki), permeability index (PI), magnesium hazard (MH) was calculated which showed that the surface water was suitable for irrigation. Lastly, one-way ANOVA (p < 0.05) confirmed no significant differences in water quality except for temperature, EC and SO4−, for pre- and post-monsoon season.

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Effect of Seasonal Variation on Pollution Load of Water of Hokersar Wetland: a Case Study of Queen Wetland of Kashmir, J&K, India

Bano

Rather

Malik

et al. 2022

Water Air Soil Pollut

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Chemical weathering and atmospheric CO2 consumption in the semi-arid Swarnamukhi basin (Peninsular India) estimated from river water geochemistry

Cited by 11 publications

References 44 publications

Chemical weathering and carbon dioxide consumption in a small tropical river catchment, southwestern India

Chemical weathering and carbon dioxide consumption in a small tropical river catchment, southwestern India

Mechanisms controlling major ion chemistry and its suitability for irrigation of Narmada River, India

Effect of Seasonal Variation on Pollution Load of Water of Hokersar Wetland: a Case Study of Queen Wetland of Kashmir, J&K, India

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