Fluvial geochemistry of Subarnarekha River basin, India
Abstract The fluvial geochemistry of the Subarnarekha River and its major tributaries has been studied on a seasonal basis in order to assess the geochemical processes that explain the water composition and estimate solute fluxes. The analytical results show the mildly acidic to alkaline nature of t...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Singh, Abhay Kumar [verfasserIn] Giri, Soma [verfasserIn] Chaturvedi, Aaditya [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2018 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Journal of earth system science - Bangalore : Indian Acad. of Sciences, 1980, 127(2018), 8 vom: 26. Okt. |
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| Übergeordnetes Werk: |
volume:127 ; year:2018 ; number:8 ; day:26 ; month:10 |
| Links: |
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| DOI / URN: |
10.1007/s12040-018-1020-6 |
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| Katalog-ID: |
SPR024064963 |
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| 520 | |a Abstract The fluvial geochemistry of the Subarnarekha River and its major tributaries has been studied on a seasonal basis in order to assess the geochemical processes that explain the water composition and estimate solute fluxes. The analytical results show the mildly acidic to alkaline nature of the Subarnarekha River water and the dominance of %$\hbox {Ca}^{2+}%$ and %$\hbox {Na}^{+}%$ in cationic and %$\hbox {HCO}_{3}^{-}%$ and %${\hbox {Cl}}^{-}%$ in anionic composition. Minimum ionic concentration during the monsoon and maximum concentration in the pre-monsoon seasons reflect concentrating effects due to decrease in the river discharge and increase in the base flow contribution during the pre-monsoon and dilution effects of atmospheric precipitation in the monsoon season. The solute acquisition processes are mainly controlled by weathering of rocks, with minor contribution from marine and anthropogenic sources. Higher contribution of alkaline earth %$(\hbox {Ca}^{2+}{+}\,\hbox {Mg}^{2+})%$ to the total cations %$(\hbox {TZ}^{+})%$ and high %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {Cl}^{-}%$, %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {TZ}^{+}%$, %$\hbox {HCO}_{3}^{-}/(\hbox {SO}_{4}^{2-}+\hbox {Cl}^{-})%$ and low %$(\hbox {Ca}^{2+}+\hbox {Mg}^{2+})/(\hbox {Na}^{+}+\hbox {K}^{+})%$ equivalent ratios suggest that the Subarnarekha River water is under the combined influence of carbonate and silicate weathering. The river water is undersaturated with respect to dolomite and calcite during the post-monsoon and monsoon seasons and oversaturated in the pre-monsoon season. The pH–log %$\hbox {H}_{4}\hbox {SiO}_{4}%$ stability diagram demonstrates that the water chemistry is in equilibrium with the kaolinite. The Subarnarekha River annually delivered %$1.477\times 10^{6}%$ ton of dissolved loads to the Bay of Bengal, with an estimated chemical denudation rate of %$77\hbox { ton km}^{-2}\hbox { yr}^{-1}%$. Sodium adsorption ratio, residual sodium carbonate and per cent sodium values placed the studied river water in the ‘excellent to good quality’ category and it can be safely used for irrigation. | ||
| 650 | 4 | |a Subarnarekha River basin |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a weathering |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a solute acquisition |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a dissolved flux |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a saturation index |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a water quality |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Giri, Soma |e verfasserin |4 aut | |
| 700 | 1 | |a Chaturvedi, Aaditya |e verfasserin |4 aut | |
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10.1007/s12040-018-1020-6 doi (DE-627)SPR024064963 (SPR)s12040-018-1020-6-e DE-627 ger DE-627 rakwb eng 500 550 ASE 38.00 bkl 39.29 bkl Singh, Abhay Kumar verfasserin aut Fluvial geochemistry of Subarnarekha River basin, India 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The fluvial geochemistry of the Subarnarekha River and its major tributaries has been studied on a seasonal basis in order to assess the geochemical processes that explain the water composition and estimate solute fluxes. The analytical results show the mildly acidic to alkaline nature of the Subarnarekha River water and the dominance of %$\hbox {Ca}^{2+}%$ and %$\hbox {Na}^{+}%$ in cationic and %$\hbox {HCO}_{3}^{-}%$ and %${\hbox {Cl}}^{-}%$ in anionic composition. Minimum ionic concentration during the monsoon and maximum concentration in the pre-monsoon seasons reflect concentrating effects due to decrease in the river discharge and increase in the base flow contribution during the pre-monsoon and dilution effects of atmospheric precipitation in the monsoon season. The solute acquisition processes are mainly controlled by weathering of rocks, with minor contribution from marine and anthropogenic sources. Higher contribution of alkaline earth %$(\hbox {Ca}^{2+}{+}\,\hbox {Mg}^{2+})%$ to the total cations %$(\hbox {TZ}^{+})%$ and high %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {Cl}^{-}%$, %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {TZ}^{+}%$, %$\hbox {HCO}_{3}^{-}/(\hbox {SO}_{4}^{2-}+\hbox {Cl}^{-})%$ and low %$(\hbox {Ca}^{2+}+\hbox {Mg}^{2+})/(\hbox {Na}^{+}+\hbox {K}^{+})%$ equivalent ratios suggest that the Subarnarekha River water is under the combined influence of carbonate and silicate weathering. The river water is undersaturated with respect to dolomite and calcite during the post-monsoon and monsoon seasons and oversaturated in the pre-monsoon season. The pH–log %$\hbox {H}_{4}\hbox {SiO}_{4}%$ stability diagram demonstrates that the water chemistry is in equilibrium with the kaolinite. The Subarnarekha River annually delivered %$1.477\times 10^{6}%$ ton of dissolved loads to the Bay of Bengal, with an estimated chemical denudation rate of %$77\hbox { ton km}^{-2}\hbox { yr}^{-1}%$. Sodium adsorption ratio, residual sodium carbonate and per cent sodium values placed the studied river water in the ‘excellent to good quality’ category and it can be safely used for irrigation. Subarnarekha River basin (dpeaa)DE-He213 weathering (dpeaa)DE-He213 solute acquisition (dpeaa)DE-He213 dissolved flux (dpeaa)DE-He213 saturation index (dpeaa)DE-He213 water quality (dpeaa)DE-He213 Giri, Soma verfasserin aut Chaturvedi, Aaditya verfasserin aut Enthalten in Journal of earth system science Bangalore : Indian Acad. of Sciences, 1980 127(2018), 8 vom: 26. Okt. (DE-627)349877327 (DE-600)2081712-5 0973-774X nnns volume:127 year:2018 number:8 day:26 month:10 https://dx.doi.org/10.1007/s12040-018-1020-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GEO SSG-OPC-GGO SSG-OPC-AST SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 38.00 ASE 39.29 ASE AR 127 2018 8 26 10 |
| spelling |
10.1007/s12040-018-1020-6 doi (DE-627)SPR024064963 (SPR)s12040-018-1020-6-e DE-627 ger DE-627 rakwb eng 500 550 ASE 38.00 bkl 39.29 bkl Singh, Abhay Kumar verfasserin aut Fluvial geochemistry of Subarnarekha River basin, India 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The fluvial geochemistry of the Subarnarekha River and its major tributaries has been studied on a seasonal basis in order to assess the geochemical processes that explain the water composition and estimate solute fluxes. The analytical results show the mildly acidic to alkaline nature of the Subarnarekha River water and the dominance of %$\hbox {Ca}^{2+}%$ and %$\hbox {Na}^{+}%$ in cationic and %$\hbox {HCO}_{3}^{-}%$ and %${\hbox {Cl}}^{-}%$ in anionic composition. Minimum ionic concentration during the monsoon and maximum concentration in the pre-monsoon seasons reflect concentrating effects due to decrease in the river discharge and increase in the base flow contribution during the pre-monsoon and dilution effects of atmospheric precipitation in the monsoon season. The solute acquisition processes are mainly controlled by weathering of rocks, with minor contribution from marine and anthropogenic sources. Higher contribution of alkaline earth %$(\hbox {Ca}^{2+}{+}\,\hbox {Mg}^{2+})%$ to the total cations %$(\hbox {TZ}^{+})%$ and high %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {Cl}^{-}%$, %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {TZ}^{+}%$, %$\hbox {HCO}_{3}^{-}/(\hbox {SO}_{4}^{2-}+\hbox {Cl}^{-})%$ and low %$(\hbox {Ca}^{2+}+\hbox {Mg}^{2+})/(\hbox {Na}^{+}+\hbox {K}^{+})%$ equivalent ratios suggest that the Subarnarekha River water is under the combined influence of carbonate and silicate weathering. The river water is undersaturated with respect to dolomite and calcite during the post-monsoon and monsoon seasons and oversaturated in the pre-monsoon season. The pH–log %$\hbox {H}_{4}\hbox {SiO}_{4}%$ stability diagram demonstrates that the water chemistry is in equilibrium with the kaolinite. The Subarnarekha River annually delivered %$1.477\times 10^{6}%$ ton of dissolved loads to the Bay of Bengal, with an estimated chemical denudation rate of %$77\hbox { ton km}^{-2}\hbox { yr}^{-1}%$. Sodium adsorption ratio, residual sodium carbonate and per cent sodium values placed the studied river water in the ‘excellent to good quality’ category and it can be safely used for irrigation. Subarnarekha River basin (dpeaa)DE-He213 weathering (dpeaa)DE-He213 solute acquisition (dpeaa)DE-He213 dissolved flux (dpeaa)DE-He213 saturation index (dpeaa)DE-He213 water quality (dpeaa)DE-He213 Giri, Soma verfasserin aut Chaturvedi, Aaditya verfasserin aut Enthalten in Journal of earth system science Bangalore : Indian Acad. of Sciences, 1980 127(2018), 8 vom: 26. Okt. (DE-627)349877327 (DE-600)2081712-5 0973-774X nnns volume:127 year:2018 number:8 day:26 month:10 https://dx.doi.org/10.1007/s12040-018-1020-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GEO SSG-OPC-GGO SSG-OPC-AST SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 38.00 ASE 39.29 ASE AR 127 2018 8 26 10 |
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10.1007/s12040-018-1020-6 doi (DE-627)SPR024064963 (SPR)s12040-018-1020-6-e DE-627 ger DE-627 rakwb eng 500 550 ASE 38.00 bkl 39.29 bkl Singh, Abhay Kumar verfasserin aut Fluvial geochemistry of Subarnarekha River basin, India 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The fluvial geochemistry of the Subarnarekha River and its major tributaries has been studied on a seasonal basis in order to assess the geochemical processes that explain the water composition and estimate solute fluxes. The analytical results show the mildly acidic to alkaline nature of the Subarnarekha River water and the dominance of %$\hbox {Ca}^{2+}%$ and %$\hbox {Na}^{+}%$ in cationic and %$\hbox {HCO}_{3}^{-}%$ and %${\hbox {Cl}}^{-}%$ in anionic composition. Minimum ionic concentration during the monsoon and maximum concentration in the pre-monsoon seasons reflect concentrating effects due to decrease in the river discharge and increase in the base flow contribution during the pre-monsoon and dilution effects of atmospheric precipitation in the monsoon season. The solute acquisition processes are mainly controlled by weathering of rocks, with minor contribution from marine and anthropogenic sources. Higher contribution of alkaline earth %$(\hbox {Ca}^{2+}{+}\,\hbox {Mg}^{2+})%$ to the total cations %$(\hbox {TZ}^{+})%$ and high %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {Cl}^{-}%$, %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {TZ}^{+}%$, %$\hbox {HCO}_{3}^{-}/(\hbox {SO}_{4}^{2-}+\hbox {Cl}^{-})%$ and low %$(\hbox {Ca}^{2+}+\hbox {Mg}^{2+})/(\hbox {Na}^{+}+\hbox {K}^{+})%$ equivalent ratios suggest that the Subarnarekha River water is under the combined influence of carbonate and silicate weathering. The river water is undersaturated with respect to dolomite and calcite during the post-monsoon and monsoon seasons and oversaturated in the pre-monsoon season. The pH–log %$\hbox {H}_{4}\hbox {SiO}_{4}%$ stability diagram demonstrates that the water chemistry is in equilibrium with the kaolinite. The Subarnarekha River annually delivered %$1.477\times 10^{6}%$ ton of dissolved loads to the Bay of Bengal, with an estimated chemical denudation rate of %$77\hbox { ton km}^{-2}\hbox { yr}^{-1}%$. Sodium adsorption ratio, residual sodium carbonate and per cent sodium values placed the studied river water in the ‘excellent to good quality’ category and it can be safely used for irrigation. Subarnarekha River basin (dpeaa)DE-He213 weathering (dpeaa)DE-He213 solute acquisition (dpeaa)DE-He213 dissolved flux (dpeaa)DE-He213 saturation index (dpeaa)DE-He213 water quality (dpeaa)DE-He213 Giri, Soma verfasserin aut Chaturvedi, Aaditya verfasserin aut Enthalten in Journal of earth system science Bangalore : Indian Acad. of Sciences, 1980 127(2018), 8 vom: 26. Okt. (DE-627)349877327 (DE-600)2081712-5 0973-774X nnns volume:127 year:2018 number:8 day:26 month:10 https://dx.doi.org/10.1007/s12040-018-1020-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GEO SSG-OPC-GGO SSG-OPC-AST SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 38.00 ASE 39.29 ASE AR 127 2018 8 26 10 |
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10.1007/s12040-018-1020-6 doi (DE-627)SPR024064963 (SPR)s12040-018-1020-6-e DE-627 ger DE-627 rakwb eng 500 550 ASE 38.00 bkl 39.29 bkl Singh, Abhay Kumar verfasserin aut Fluvial geochemistry of Subarnarekha River basin, India 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The fluvial geochemistry of the Subarnarekha River and its major tributaries has been studied on a seasonal basis in order to assess the geochemical processes that explain the water composition and estimate solute fluxes. The analytical results show the mildly acidic to alkaline nature of the Subarnarekha River water and the dominance of %$\hbox {Ca}^{2+}%$ and %$\hbox {Na}^{+}%$ in cationic and %$\hbox {HCO}_{3}^{-}%$ and %${\hbox {Cl}}^{-}%$ in anionic composition. Minimum ionic concentration during the monsoon and maximum concentration in the pre-monsoon seasons reflect concentrating effects due to decrease in the river discharge and increase in the base flow contribution during the pre-monsoon and dilution effects of atmospheric precipitation in the monsoon season. The solute acquisition processes are mainly controlled by weathering of rocks, with minor contribution from marine and anthropogenic sources. Higher contribution of alkaline earth %$(\hbox {Ca}^{2+}{+}\,\hbox {Mg}^{2+})%$ to the total cations %$(\hbox {TZ}^{+})%$ and high %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {Cl}^{-}%$, %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {TZ}^{+}%$, %$\hbox {HCO}_{3}^{-}/(\hbox {SO}_{4}^{2-}+\hbox {Cl}^{-})%$ and low %$(\hbox {Ca}^{2+}+\hbox {Mg}^{2+})/(\hbox {Na}^{+}+\hbox {K}^{+})%$ equivalent ratios suggest that the Subarnarekha River water is under the combined influence of carbonate and silicate weathering. The river water is undersaturated with respect to dolomite and calcite during the post-monsoon and monsoon seasons and oversaturated in the pre-monsoon season. The pH–log %$\hbox {H}_{4}\hbox {SiO}_{4}%$ stability diagram demonstrates that the water chemistry is in equilibrium with the kaolinite. The Subarnarekha River annually delivered %$1.477\times 10^{6}%$ ton of dissolved loads to the Bay of Bengal, with an estimated chemical denudation rate of %$77\hbox { ton km}^{-2}\hbox { yr}^{-1}%$. Sodium adsorption ratio, residual sodium carbonate and per cent sodium values placed the studied river water in the ‘excellent to good quality’ category and it can be safely used for irrigation. Subarnarekha River basin (dpeaa)DE-He213 weathering (dpeaa)DE-He213 solute acquisition (dpeaa)DE-He213 dissolved flux (dpeaa)DE-He213 saturation index (dpeaa)DE-He213 water quality (dpeaa)DE-He213 Giri, Soma verfasserin aut Chaturvedi, Aaditya verfasserin aut Enthalten in Journal of earth system science Bangalore : Indian Acad. of Sciences, 1980 127(2018), 8 vom: 26. Okt. (DE-627)349877327 (DE-600)2081712-5 0973-774X nnns volume:127 year:2018 number:8 day:26 month:10 https://dx.doi.org/10.1007/s12040-018-1020-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GEO SSG-OPC-GGO SSG-OPC-AST SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 38.00 ASE 39.29 ASE AR 127 2018 8 26 10 |
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10.1007/s12040-018-1020-6 doi (DE-627)SPR024064963 (SPR)s12040-018-1020-6-e DE-627 ger DE-627 rakwb eng 500 550 ASE 38.00 bkl 39.29 bkl Singh, Abhay Kumar verfasserin aut Fluvial geochemistry of Subarnarekha River basin, India 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The fluvial geochemistry of the Subarnarekha River and its major tributaries has been studied on a seasonal basis in order to assess the geochemical processes that explain the water composition and estimate solute fluxes. The analytical results show the mildly acidic to alkaline nature of the Subarnarekha River water and the dominance of %$\hbox {Ca}^{2+}%$ and %$\hbox {Na}^{+}%$ in cationic and %$\hbox {HCO}_{3}^{-}%$ and %${\hbox {Cl}}^{-}%$ in anionic composition. Minimum ionic concentration during the monsoon and maximum concentration in the pre-monsoon seasons reflect concentrating effects due to decrease in the river discharge and increase in the base flow contribution during the pre-monsoon and dilution effects of atmospheric precipitation in the monsoon season. The solute acquisition processes are mainly controlled by weathering of rocks, with minor contribution from marine and anthropogenic sources. Higher contribution of alkaline earth %$(\hbox {Ca}^{2+}{+}\,\hbox {Mg}^{2+})%$ to the total cations %$(\hbox {TZ}^{+})%$ and high %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {Cl}^{-}%$, %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {TZ}^{+}%$, %$\hbox {HCO}_{3}^{-}/(\hbox {SO}_{4}^{2-}+\hbox {Cl}^{-})%$ and low %$(\hbox {Ca}^{2+}+\hbox {Mg}^{2+})/(\hbox {Na}^{+}+\hbox {K}^{+})%$ equivalent ratios suggest that the Subarnarekha River water is under the combined influence of carbonate and silicate weathering. The river water is undersaturated with respect to dolomite and calcite during the post-monsoon and monsoon seasons and oversaturated in the pre-monsoon season. The pH–log %$\hbox {H}_{4}\hbox {SiO}_{4}%$ stability diagram demonstrates that the water chemistry is in equilibrium with the kaolinite. The Subarnarekha River annually delivered %$1.477\times 10^{6}%$ ton of dissolved loads to the Bay of Bengal, with an estimated chemical denudation rate of %$77\hbox { ton km}^{-2}\hbox { yr}^{-1}%$. Sodium adsorption ratio, residual sodium carbonate and per cent sodium values placed the studied river water in the ‘excellent to good quality’ category and it can be safely used for irrigation. Subarnarekha River basin (dpeaa)DE-He213 weathering (dpeaa)DE-He213 solute acquisition (dpeaa)DE-He213 dissolved flux (dpeaa)DE-He213 saturation index (dpeaa)DE-He213 water quality (dpeaa)DE-He213 Giri, Soma verfasserin aut Chaturvedi, Aaditya verfasserin aut Enthalten in Journal of earth system science Bangalore : Indian Acad. of Sciences, 1980 127(2018), 8 vom: 26. Okt. (DE-627)349877327 (DE-600)2081712-5 0973-774X nnns volume:127 year:2018 number:8 day:26 month:10 https://dx.doi.org/10.1007/s12040-018-1020-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GEO SSG-OPC-GGO SSG-OPC-AST SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 38.00 ASE 39.29 ASE AR 127 2018 8 26 10 |
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Enthalten in Journal of earth system science 127(2018), 8 vom: 26. Okt. volume:127 year:2018 number:8 day:26 month:10 |
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Enthalten in Journal of earth system science 127(2018), 8 vom: 26. Okt. volume:127 year:2018 number:8 day:26 month:10 |
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Singh, Abhay Kumar @@aut@@ Giri, Soma @@aut@@ Chaturvedi, Aaditya @@aut@@ |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">SPR024064963</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20220111111346.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">201006s2018 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1007/s12040-018-1020-6</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)SPR024064963</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(SPR)s12040-018-1020-6-e</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">500</subfield><subfield code="a">550</subfield><subfield code="q">ASE</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">38.00</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">39.29</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Singh, Abhay Kumar</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Fluvial geochemistry of Subarnarekha River basin, India</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2018</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract The fluvial geochemistry of the Subarnarekha River and its major tributaries has been studied on a seasonal basis in order to assess the geochemical processes that explain the water composition and estimate solute fluxes. The analytical results show the mildly acidic to alkaline nature of the Subarnarekha River water and the dominance of %$\hbox {Ca}^{2+}%$ and %$\hbox {Na}^{+}%$ in cationic and %$\hbox {HCO}_{3}^{-}%$ and %${\hbox {Cl}}^{-}%$ in anionic composition. Minimum ionic concentration during the monsoon and maximum concentration in the pre-monsoon seasons reflect concentrating effects due to decrease in the river discharge and increase in the base flow contribution during the pre-monsoon and dilution effects of atmospheric precipitation in the monsoon season. The solute acquisition processes are mainly controlled by weathering of rocks, with minor contribution from marine and anthropogenic sources. Higher contribution of alkaline earth %$(\hbox {Ca}^{2+}{+}\,\hbox {Mg}^{2+})%$ to the total cations %$(\hbox {TZ}^{+})%$ and high %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {Cl}^{-}%$, %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {TZ}^{+}%$, %$\hbox {HCO}_{3}^{-}/(\hbox {SO}_{4}^{2-}+\hbox {Cl}^{-})%$ and low %$(\hbox {Ca}^{2+}+\hbox {Mg}^{2+})/(\hbox {Na}^{+}+\hbox {K}^{+})%$ equivalent ratios suggest that the Subarnarekha River water is under the combined influence of carbonate and silicate weathering. The river water is undersaturated with respect to dolomite and calcite during the post-monsoon and monsoon seasons and oversaturated in the pre-monsoon season. The pH–log %$\hbox {H}_{4}\hbox {SiO}_{4}%$ stability diagram demonstrates that the water chemistry is in equilibrium with the kaolinite. The Subarnarekha River annually delivered %$1.477\times 10^{6}%$ ton of dissolved loads to the Bay of Bengal, with an estimated chemical denudation rate of %$77\hbox { ton km}^{-2}\hbox { yr}^{-1}%$. Sodium adsorption ratio, residual sodium carbonate and per cent sodium values placed the studied river water in the ‘excellent to good quality’ category and it can be safely used for irrigation.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Subarnarekha River basin</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">weathering</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">solute acquisition</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">dissolved flux</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">saturation index</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">water quality</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Giri, Soma</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Chaturvedi, Aaditya</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Journal of earth system science</subfield><subfield code="d">Bangalore : Indian Acad. of Sciences, 1980</subfield><subfield code="g">127(2018), 8 vom: 26. 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Singh, Abhay Kumar |
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Singh, Abhay Kumar ddc 500 bkl 38.00 bkl 39.29 misc Subarnarekha River basin misc weathering misc solute acquisition misc dissolved flux misc saturation index misc water quality Fluvial geochemistry of Subarnarekha River basin, India |
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500 550 ASE 38.00 bkl 39.29 bkl Fluvial geochemistry of Subarnarekha River basin, India Subarnarekha River basin (dpeaa)DE-He213 weathering (dpeaa)DE-He213 solute acquisition (dpeaa)DE-He213 dissolved flux (dpeaa)DE-He213 saturation index (dpeaa)DE-He213 water quality (dpeaa)DE-He213 |
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ddc 500 bkl 38.00 bkl 39.29 misc Subarnarekha River basin misc weathering misc solute acquisition misc dissolved flux misc saturation index misc water quality |
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Fluvial geochemistry of Subarnarekha River basin, India |
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Singh, Abhay Kumar Giri, Soma Chaturvedi, Aaditya |
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Elektronische Aufsätze |
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Singh, Abhay Kumar |
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10.1007/s12040-018-1020-6 |
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fluvial geochemistry of subarnarekha river basin, india |
| title_auth |
Fluvial geochemistry of Subarnarekha River basin, India |
| abstract |
Abstract The fluvial geochemistry of the Subarnarekha River and its major tributaries has been studied on a seasonal basis in order to assess the geochemical processes that explain the water composition and estimate solute fluxes. The analytical results show the mildly acidic to alkaline nature of the Subarnarekha River water and the dominance of %$\hbox {Ca}^{2+}%$ and %$\hbox {Na}^{+}%$ in cationic and %$\hbox {HCO}_{3}^{-}%$ and %${\hbox {Cl}}^{-}%$ in anionic composition. Minimum ionic concentration during the monsoon and maximum concentration in the pre-monsoon seasons reflect concentrating effects due to decrease in the river discharge and increase in the base flow contribution during the pre-monsoon and dilution effects of atmospheric precipitation in the monsoon season. The solute acquisition processes are mainly controlled by weathering of rocks, with minor contribution from marine and anthropogenic sources. Higher contribution of alkaline earth %$(\hbox {Ca}^{2+}{+}\,\hbox {Mg}^{2+})%$ to the total cations %$(\hbox {TZ}^{+})%$ and high %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {Cl}^{-}%$, %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {TZ}^{+}%$, %$\hbox {HCO}_{3}^{-}/(\hbox {SO}_{4}^{2-}+\hbox {Cl}^{-})%$ and low %$(\hbox {Ca}^{2+}+\hbox {Mg}^{2+})/(\hbox {Na}^{+}+\hbox {K}^{+})%$ equivalent ratios suggest that the Subarnarekha River water is under the combined influence of carbonate and silicate weathering. The river water is undersaturated with respect to dolomite and calcite during the post-monsoon and monsoon seasons and oversaturated in the pre-monsoon season. The pH–log %$\hbox {H}_{4}\hbox {SiO}_{4}%$ stability diagram demonstrates that the water chemistry is in equilibrium with the kaolinite. The Subarnarekha River annually delivered %$1.477\times 10^{6}%$ ton of dissolved loads to the Bay of Bengal, with an estimated chemical denudation rate of %$77\hbox { ton km}^{-2}\hbox { yr}^{-1}%$. Sodium adsorption ratio, residual sodium carbonate and per cent sodium values placed the studied river water in the ‘excellent to good quality’ category and it can be safely used for irrigation. |
| abstractGer |
Abstract The fluvial geochemistry of the Subarnarekha River and its major tributaries has been studied on a seasonal basis in order to assess the geochemical processes that explain the water composition and estimate solute fluxes. The analytical results show the mildly acidic to alkaline nature of the Subarnarekha River water and the dominance of %$\hbox {Ca}^{2+}%$ and %$\hbox {Na}^{+}%$ in cationic and %$\hbox {HCO}_{3}^{-}%$ and %${\hbox {Cl}}^{-}%$ in anionic composition. Minimum ionic concentration during the monsoon and maximum concentration in the pre-monsoon seasons reflect concentrating effects due to decrease in the river discharge and increase in the base flow contribution during the pre-monsoon and dilution effects of atmospheric precipitation in the monsoon season. The solute acquisition processes are mainly controlled by weathering of rocks, with minor contribution from marine and anthropogenic sources. Higher contribution of alkaline earth %$(\hbox {Ca}^{2+}{+}\,\hbox {Mg}^{2+})%$ to the total cations %$(\hbox {TZ}^{+})%$ and high %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {Cl}^{-}%$, %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {TZ}^{+}%$, %$\hbox {HCO}_{3}^{-}/(\hbox {SO}_{4}^{2-}+\hbox {Cl}^{-})%$ and low %$(\hbox {Ca}^{2+}+\hbox {Mg}^{2+})/(\hbox {Na}^{+}+\hbox {K}^{+})%$ equivalent ratios suggest that the Subarnarekha River water is under the combined influence of carbonate and silicate weathering. The river water is undersaturated with respect to dolomite and calcite during the post-monsoon and monsoon seasons and oversaturated in the pre-monsoon season. The pH–log %$\hbox {H}_{4}\hbox {SiO}_{4}%$ stability diagram demonstrates that the water chemistry is in equilibrium with the kaolinite. The Subarnarekha River annually delivered %$1.477\times 10^{6}%$ ton of dissolved loads to the Bay of Bengal, with an estimated chemical denudation rate of %$77\hbox { ton km}^{-2}\hbox { yr}^{-1}%$. Sodium adsorption ratio, residual sodium carbonate and per cent sodium values placed the studied river water in the ‘excellent to good quality’ category and it can be safely used for irrigation. |
| abstract_unstemmed |
Abstract The fluvial geochemistry of the Subarnarekha River and its major tributaries has been studied on a seasonal basis in order to assess the geochemical processes that explain the water composition and estimate solute fluxes. The analytical results show the mildly acidic to alkaline nature of the Subarnarekha River water and the dominance of %$\hbox {Ca}^{2+}%$ and %$\hbox {Na}^{+}%$ in cationic and %$\hbox {HCO}_{3}^{-}%$ and %${\hbox {Cl}}^{-}%$ in anionic composition. Minimum ionic concentration during the monsoon and maximum concentration in the pre-monsoon seasons reflect concentrating effects due to decrease in the river discharge and increase in the base flow contribution during the pre-monsoon and dilution effects of atmospheric precipitation in the monsoon season. The solute acquisition processes are mainly controlled by weathering of rocks, with minor contribution from marine and anthropogenic sources. Higher contribution of alkaline earth %$(\hbox {Ca}^{2+}{+}\,\hbox {Mg}^{2+})%$ to the total cations %$(\hbox {TZ}^{+})%$ and high %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {Cl}^{-}%$, %$(\hbox {Na}^{+}+\hbox {K}^{+})/\hbox {TZ}^{+}%$, %$\hbox {HCO}_{3}^{-}/(\hbox {SO}_{4}^{2-}+\hbox {Cl}^{-})%$ and low %$(\hbox {Ca}^{2+}+\hbox {Mg}^{2+})/(\hbox {Na}^{+}+\hbox {K}^{+})%$ equivalent ratios suggest that the Subarnarekha River water is under the combined influence of carbonate and silicate weathering. The river water is undersaturated with respect to dolomite and calcite during the post-monsoon and monsoon seasons and oversaturated in the pre-monsoon season. The pH–log %$\hbox {H}_{4}\hbox {SiO}_{4}%$ stability diagram demonstrates that the water chemistry is in equilibrium with the kaolinite. The Subarnarekha River annually delivered %$1.477\times 10^{6}%$ ton of dissolved loads to the Bay of Bengal, with an estimated chemical denudation rate of %$77\hbox { ton km}^{-2}\hbox { yr}^{-1}%$. Sodium adsorption ratio, residual sodium carbonate and per cent sodium values placed the studied river water in the ‘excellent to good quality’ category and it can be safely used for irrigation. |
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Fluvial geochemistry of Subarnarekha River basin, India |
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| score |
7.401019 |