[1]HU Xiaojing,FU Hong,BI Qing.Research on Group Anomalies of Groundwater Level in Yunnan Region Based on Eliminating Precipitation Interference[J].Journal of Seismological Research,2016,39(04):545-552.
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Research on Group Anomalies of Groundwater Level in Yunnan Region Based on Eliminating Precipitation Interference
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
39
Number of periods:
2016 04
Page number:
545-552
Column:
Public date:
2016-10-30
- Title:
- Research on Group Anomalies of Groundwater Level in Yunnan Region Based on Eliminating Precipitation Interference
- CLC:
- P315.723
- DOI:
- -
- Abstract:
- Selecting 20 groundwater level observation wells which had been observed more than 10 years in the Yunnan region as research object,we eliminated the precipitation interference for 18 groundwater wells greatly influenced by precipitation by use of the peak-valley value and valley-valley amplitude value of groundwater level methods.Then we extracted the group anomalies of ground water level of 20 wells in accordance with 3 different regions(including Yunnan Province,eastern and western of Honghe Fault).The results showed that the group anomalies recorded by ground water level observation well have good correlation with M≥6 earthquakes.And the predicted effect of valley-valley amplitude value method is better than that of peak-valley amplitude method,which may indicate that the delayed impact process of precipitation is more important for these wells.The predicted effect of particular region was worse than that of the whole province,which may indicate that the increase of the group anomalies of water level may caused by the increasing of regional tectonic activity and stress level.If we use the anomalies of water level in the smaller area to predict the earthquakes,the probability of false and missing prediction will increase obviously,and the effectiveness of forecasting is reduced.The area under the background of tectonic activity increasing in abnormal increase region is easily to occur M≥6 earthquakes,so the group anomaly index for forecasting annual the occurrence of seismic activity in Yunnan has some effectiveness.
- References:
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Last Update:
2016-10-30