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| Titel |
Rn and CO2 geochemistry of soil gas across the active fault zones in the capital area of China |
| VerfasserIn |
X. Han, Y. Li, J. Du, X. Zhou, C. Xie, W. Zhang |
| 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 ; 14, no. 10 ; Nr. 14, no. 10 (2014-10-24), S.2803-2815 |
| Datensatznummer |
250118716
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| Publikation (Nr.) |
 copernicus.org/nhess-14-2803-2014.pdf |
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| Zusammenfassung |
| The present work is proposed to investigate the spatiotemporal variations in
soil gas Rn and CO2 across the active faults in the capital area of
China in order to understand fault activities and assess seismic hazard. A total of 342 soil gas sampling sites were measured twice
in 2011 and 2012 along seven profiles and across four faults. The results of
soil gas surveys show that, in each profile, due to the variation in gas
emission rate, the concentrations of Rn and CO2 changed in the vicinity
of faults. Spatial distributions of Rn and CO2 in the study areas were
different from each other, which was attributed to soil types affecting the
existence of Rn and CO2. Compared with the measurement result of 2011,
the increasing amplitude of average concentration value of Rn and CO2
in profiles in 2012 ranged from 30.2 to 123.4% and 66.3
to 131.7%, respectively, which were coincident with the enhancement of
seismic activities in the capital area of China. Our results indicate that
special attention with regard to seismic monitoring should be paid to the Xinbaoan–Shacheng
Fault and the northeastern segment of the Tangshan Fault in the future. |
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