摘要
利用重力方法研究地球的潮汐和非潮汐变化。通过它们的变化规律了解地下介质的质量变化和密度分布以及地球弹性模量与地震的关系。20多年地震预报实践表明,重力方法在地震预报中有其特殊作用。根据目前在台站或测点按波速异常所圈定的孕震区内发生的地震统计检验:台站监测能力为44％,重力重复测量的监测能力可达56％。
Tide and non-tide variation in earth is studied by using the gravity method. The relation between mass variation and density distribution in underground medium, relation between the earth's elastic modulus and seismicity are explored based on their change low. Earthquake prediction pratice for more than 20 yraes shows that the gravity method has a special significance in earthquake prediction. At present, statistical tests of the occurred earthquakes in seismogenic region encircled based on wave velocity anomalies observed at stations or the observation points have shown that the monitoring ability for the stations is 44% and that for the gravity repetition measurement can reach 56%.
出处
《地震》
CSCD
北大核心
1996年第1期90-95,共6页
Earthquake
关键词
潮汐
重力法
预报指标
地震预报
Tide. Gravity method, Prediction index, Non-tide. Monitoring ability
