显著地震地方平太阴时在台湾强震中应用研究

(福建省地震局南平地震台,福建 南平 35010)

地方平太阴时;显著地震;地震预测;台湾地区

Application Study on Local Mean Lunar Times of Remarkable Earthquake in Taiwan Strong Earthquakes
GONG Wei,FANG Chuanji,LIANG Kai,CHEN Chuanchang

(Nanping Seismic Station, Fujian Earthquake Agency,Nanping 353000,China)

Local mean lunar times;Remarkable earthquake;Earthquake prediction;Taiwan area

DOI: 10.13512/j.hndz.2020.01.005

备注

根据显著地震地方平太阴时分布预报地震的思路,对台湾地区1971年以来14组MS7级以上地震前显著地震特征进行了回顾性研究。研究结果显示,台湾地区14组MS7级以上地震中,9组地震前存在两个以上显著地震,约占总地震数64%。9组存在两个显著地震中,只有1组地震前显著地震地方平太阴时夹角Δτ≥45°,其余8组地震前显著地震地方平太阴时夹角Δτ≤45°,且主震都发生在其满足条件的显著地震后29天内。结果 表明,地方平太阴时夹角Δτ≤45°可应用于台湾强震前的短临预测。

According on the idea of predicting earthquakes by local mean lunar times of remarkable earthquake, the characteristics of 14 groups earthquakes with MS≥ 7.0 in Taiwan area since 1971 was studied retrospectively. The results showed that among 14 groups earthquakes with MS≥ 7,5 groups did not have more than two remarkable earthquakes before the strong earthquake, and 9 groups had more than two remarkable earthquakes before the strong earthquake,about 64% of the total earthquakes. Among the 9 groups, the local mean lunar times angle of remarkable earthquake before the earthquake was greater than 45° in only 1 group, and the local mean lunar times angle were less than 45° in other 8 groups. Meanwhile, the main earthquakes occurred within 29 days after the remarkable earthquakes. The results show that the angle of local mean lunar times less than 45°can be applied to the short-impending prediction before strong earthquake in Taiwan area.