[1]TU Hongwei,WANG Peilin,ZHANG Xiaoqing,et al.Overview of Tracking of Qinghai Menyuan MS6.4 Earthquake in 2016 and its Post Earthquake Precursor Anomaly Summary[J].Journal of Seismological Research,2016,39(增刊):9-13.
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Overview of Tracking of Qinghai Menyuan MS6.4 Earthquake in 2016 and its Post Earthquake Precursor Anomaly Summary
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
39
Number of periods:
2016 Supplementary
Page number:
9-13
Column:
Public date:
2016-11-20
- Title:
- Overview of Tracking of Qinghai Menyuan MS6.4 Earthquake in 2016 and its Post Earthquake Precursor Anomaly Summary
- CLC:
- P315.71
- DOI:
- -
- Abstract:
- Through retrospective summary on the relevant tracing analysis of Menyuan MS6.4 earthquake on Jan.21,2016,we extracted the background anomaly,such as M≥6 earthquakes calm in 69 months before Yushu MS7.1 earthquake on Apr.14 since 2010,the low-frequency anomaly of M3.0 earthquakes in Qilian seismic belt,low b value,high GL value,the consistency of focal mechanism,cross fault deformation etc.. However,the confirmed precursory anomaly was that only the gas radon observation value decreased significantly in Ledu Station which is about 140 km from the epicenter since Dec.19,2015. Collecting the post-earthquake data,we extracted the two suspected anomalies,such as the static water level in Pingan Station and the borehole deformation in Huangyuan Station in Qinghai Province. Furthermore,we collected 7 medium-term anomalies in Gansu Province,but their epicenter distance is far away. Comprehensive analyzing all the anomalies,we find that it is difficult to do the short-impending prediction in the today's observation process. Its main reason is that the stations are too few,and many instruments after digital transformation almost not record strong earthquakes,and haven't accumulate typical earthquake examples. Therefore,it is suggest that we should communicate anomaly data with more adjacent provinces in the process of earthquake tracing in the future. If it necessary,we could hold a joint consultation to do more reliably analysis on strong earthquake trend.
- References:
- -
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Last Update:
2016-10-20