[1]LI Zhirong,BAI Baorong,FU Hong.Analysis of Tidal and Non-tidal Change of the Water Tube Tilt Deformation Data before Impending Earthquake in Yunnan[J].Journal of Seismological Research,2017,40(01):82-87.
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Analysis of Tidal and Non-tidal Change of the Water Tube Tilt Deformation Data before Impending Earthquake in Yunnan
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
40
Number of periods:
2017 01
Page number:
82-87
Column:
Public date:
2017-03-20
- Title:
- Analysis of Tidal and Non-tidal Change of the Water Tube Tilt Deformation Data before Impending Earthquake in Yunnan
- Keywords:
- reducing combination filtering; Nakai fitting; water tube tilt; short-term and imminent stages
- CLC:
- P315.63
- DOI:
- -
- Abstract:
- Using the reducing combination filtering method,we processed the water tube tilt observation data recorded by 10 stations in Yunnan within 3 months before 7 times of M≥5.5 earthquakes since 2008,and eliminated the tidal correction and zero drift to look for the synchronous abnormal changes in the short-term and imminent stages.The results showed that after extracting the high frequency component by reducing combination filtering method,we found that the synchronous abnormal changes were widespread before earthquakes,which could be applied in short-term tracking.The tidal response rate and linear drift rate which were solved by Nakai fitting model did not show the easy identified anomalies in short-term and imminent stages,which reflecting information needs to be further explored.
- References:
- -
- Similar References:
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Last Update:
2017-03-20