[1]WANG Jun,MIAO Ali,LI Junhui,et al.Analysis on Characteristics of Precursory Anomalies of the 2011 Anqing M4.8 Earthquake in Anhui and Jiangsu[J].Journal of Seismological Research,2018,41(04):568-576.
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Analysis on Characteristics of Precursory Anomalies of the 2011 Anqing M4.8 Earthquake in Anhui and Jiangsu
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 04
Page number:
568-576
Column:
Public date:
2018-10-20
- Title:
- Analysis on Characteristics of Precursory Anomalies of the 2011 Anqing M4.8 Earthquake in Anhui and Jiangsu
- Keywords:
- Anqing M4.8 earthquake; precursory anomalies; abnormal monthly frequency; well water level
- CLC:
- P315.75
- DOI:
- -
- Abstract:
- Analyzing all the precursory observation data in the range of 400 km rang from the epicenter before the Anhui Anqing M4.8 earthquake occurred on Jan. 19,2011,we found the precursory anomaly information and summarized the characteristic of them. The results show that the precursory anomaly has the characteristic of group,coordination etc.. The number of abnormal items began to increase about a year before the earthquake. The growth rate of the number of abnormal item began to speed up about 3 months before the earthquake. In the impending stages of about 1.5 months before the earthquake,the abnormal monthly frequency turned down,while the partial precursor trend anomalies began to turn over. The anomalies distributed extremely wide in spatial,and mainly concentrated in a distance of 250 km from the epicentre,which showing the characteristics of mobility. The effect of corresponding earthquake of water level and water temperature is very well,and the short impending significance of water level drop is important.
- References:
- -
- Similar References:
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Last Update:
2018-10-30