青海省地震烈度衰减关系研究

Study on Attenuation Relationship of Seismic Intensity in Qinghai Province

摘要:

选取青海省内1947~2019年33个M_S ≥ 5.0地震进行地震回归分析，并与前人给出的西部烈度衰减关系、地震灾害评估系统软件及地震烈度分布资料进行对比分析后，得出适合青海省特点的地震烈度衰减关系模型，数据回归后青海省地震震级衰减关系适用范围为5.0 ≤ M_S ≤ 8.0，震中距范围为0 ≤ R ≤ 250km。

Abstract:

In this paper we selected 33 earthquakes with magnitude M_S ≥ 5.0 between 1947 and 2019 in Qinghai Province. After regression analysis and comparison analysis with other related research results on the intensity of the western intensity attenuation,seismic disaster assessment system software and seismic intensity distribution data,we proposed a seismic intensity attenuation relationship model suitable for the characteristics of Qinghai Province. After the regression,the range of seismic attenuation relationship in Qinghai Province was 5.0 ≤ M_S ≤ 8.0,and the epicenter range was 0 ≤ R ≤ 250km.