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| Titel |
Hydrochemical characteristics of hot spring waters in the Kangding district related to the Lushan MS = 7.0 earthquake in Sichuan, China |
| VerfasserIn |
Z. Chen, X. Zhou, J. Du, C. Xie, L. Liu, Y. Li, L. Yi, H. Liu, Y. Cui |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 15, no. 6 ; Nr. 15, no. 6 (2015-06-05), S.1149-1156 |
| Datensatznummer |
250119527
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| Publikation (Nr.) |
 copernicus.org/nhess-15-1149-2015.pdf |
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| Zusammenfassung |
| Hydrogeochemistry of 10 hot springs in the Kangding
district was investigated by analyzing cation and anion concentrations in
the spring water. The water samples were collected in the 5 days after the
Lushan MS = 7.0 earthquake, which occurred on 20 April 2013. The spring waters
are classified into seven chemical types based on their hydrochemical
compositions. Compared with hydrochemical data before the Lushan
earthquake, concentrations of Ca2+, HCO3- and total dissolved solid (TDS) in water
samples from the Guanding, Erdaoqiao, Gonghe, Erhaoying, Tianwanhe and Caoke
springs significantly increased, which may be the result of a greater increase in
groundwater from carbonate rocks, and water–carbonate rock
interactions, enhanced by the increment of CO2. Concentrations of Na+, Cl-
and SO42- in water samples from the Guanding, Zheduotang,
Xinxing and Gonghe springs decreased, indicating a dilution of shallow waters.
Concentrations of Na+ and SO42- in water samples from the
Erhaoying spring water increased, which may be attributed to water–granite
interactions enhanced by H2S. The results indicated that hydrochemical
components of spring water could be used as an effective indicator for earthquakes. |
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