[1]TIAN Lei,YU Huaizhong,ZHOU Zhihua.Fluid Anomalies Detection of the Dian-17 Well Based on Geochemical Analysis and its Application[J].Journal of Seismological Research,2018,41(04):551-558.
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Fluid Anomalies Detection of the Dian-17 Well Based on Geochemical Analysis and its Application
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 04
Page number:
551-558
Column:
Public date:
2018-10-20
- Title:
- Fluid Anomalies Detection of the Dian-17 Well Based on Geochemical Analysis and its Application
- Keywords:
- the Dian-17 observation well; geochemistry; hydrogen and oxygen isotopes; second order differential acceleration; corresponding relation to earthquakes
- CLC:
- P315.724
- DOI:
- -
- Abstract:
- Taking hydrochemical observation items in Dian-17 well as an example,we identified the hydrogeological and geochemical condition around the observation well and determined the nature of aquifer and its recharge relationship with surrounding water bodies. By means of the two order difference method,we determined the abnormal fluctuation of the two order differential result of the data,and extracted the relevant information. There is no direct hydraulic connection between the aquifer and other possible disturbance sources,such as large surface water bodies and shallow groundwater. The change of observation data reflects the overall change of the whole aquifer,whose main reason might be the change of enviorment of tectonic stress.The result of the second order differential acceleration shows that calcium,magnesium and bicarbonate monitoring data have a high-frequency fluctuation and high value kicks before some M5 earthquakes within 200 km,M6 earthquakes within 300 km,and M7 earthquakes within 500 km from the epicentre. This research shows that the second order differential acceleration result is an evidence of the increasing tectonic stress on the premise of confirming the condition of the observation well,and can be a support for the earthquake prediction.
- References:
- -
- Similar References:
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Last Update:
2018-10-30