[1]CHEN Jia,YE Beng,GAO Qiong,et al.Study on Travel Time Variation of the Wave from Large Volume Air-gun Source before and after the 2016 Yunlong MS5.0 Earthquake[J].Journal of Seismological Research,2017,40(04):550-556.
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Study on Travel Time Variation of the Wave from Large Volume Air-gun Source before and after the 2016 Yunlong MS5.0 Earthquake
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
40
Number of periods:
2017 04
Page number:
550-556
Column:
主动源专栏
Public date:
2017-09-20
- Title:
- Study on Travel Time Variation of the Wave from Large Volume Air-gun Source before and after the 2016 Yunlong MS5.0 Earthquake
- Keywords:
- airgun seismic source; cross correlation delay technique; travel time variations; Yunlong MS5.0 earthquake
- CLC:
- P315.31
- DOI:
- -
- Abstract:
- Taken the Yunnan Yunlong MS5.0 earthquake as an example,we chose the airgun signal data recorded by three seismic stations near the epicenter of the Yunlong earthquake and five seismic stations which is a bit further from the epicenterbetween January and September 2016.We studied travel time variety characteristics of the eight seismic stations by using cross-correlation time delay measurement technology.The results show that the travel time of every station had abnormal variation before the earthquake.For the three near stations,the travel time from the eastern and western of the earthquake was different,but they all had larger changes in March and April.For the five further stations,the trend characteristics were consistent,but the range was different.The change of the travel time from the near seismic stations is more lager than the far seismic stations.Before the earthquake,less than 0.7 m of water level change can't make a substantial change on travel time.Compared with the crustal deformation observation data of the FSQ water pipe tilt in Yunlong seismic station,we observed stress changes occurred in the same period of time.
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Last Update:
2017-09-20