摘要
本文采用从观测序列中分离“系统性倾斜”的数据处理方法,分析了邛海地倾斜观测系统对于异常倾斜的识别能力问题,初步评价了该观测系统的地震前兆效益。结果表明,该观测系统似乎对一定范围内M≥5.0级地震的前兆倾斜反应敏感,其前兆效益优于目前国内一般的跨断层形变测量手段。
The Qiong-hai Observation System for Crustal Tilt is a Lake Water-level Difference Type Observation System for Crustal Tilt,which is used for monitoring crustal tilt motion on the basis of the principle of water-tube tiltmeter and by means of the relative change in the water-level of the identical moment and of the different observational spots in the same lake.In this paper, the method of detaching systematic tilts from the observed sequences is used in the analysing and processing of the observed data from the Qiong-hai Observation System for Crustal Tilt. The abnormal distinguishing ability of this system to short-impending earthquake precursor is discussed also. The present observed results show that Qiong-hai Observation System for Crustal Tilt seems to have the capability of a sensitive reaction to the short-impending precursor for the earthquakes of M≥5.0 within some range away from Qiong-hai region. The abnormal distinguishing capability of this system exceeds the domestic present cross-fault deformation stations.
出处
《地壳形变与地震》
CSCD
1990年第3期61-67,共7页
Crustal Deformation and Earthquake
