EMPIRICAL RELATIONSHIPS FOR MAGNITUDE AND SOURCE-TO-SITE DISTANCE CONVERSIONS USING RECENTLY COMPILED TURKISH STRONG-GROUND MOTION DATABASE

摘要：

We derived empirical relationships for magnitude conversion using the recently compiled Turkish strong-motion database. The database also provides useful information about the relations between different source-to-site distance metrics (epicentral distance, Repi, hypocentral distance, Rhyp, Joyner-Boore distance, Rjb etc) that are effectively used in the seismic hazard analysis. The empirical magnitude equations re-scale body-wave (mb), surface-wave (Ms), local (ML) and duration (Md) magnitudes to moment magnitude (Mw). We employed ordinary and total least squares regression procedures separately to derive these relationships. The residual analyses conducted for the evaluation of these relationships showed that the expressions obtained from ordinary least squares regression procedure perform better for the conversion of other magnitude scales to Mw. The proposed equations are also compared with the other similar relationships presented in the literature. The preliminary evaluations reveal a fairly good agreement between the proposed relationships and the magnitude conversions described in the other studies. The observations made in this study suggest the reliability of the recently compiled Turkish strong-motion database for more advanced earthquake related studies.

关键词： magnitude source-to-site distance Turkish strong-motion database ordinary / orthogonal regression.

作者: E. Yenier (O).Erdogan S. Akkar

作者单位: Graduate Student, Earthquake Engineering Research Center, Dept. of Civil Engineering, Middle East Te Associate Professor, Earthquake Engineering Research Center, Dept. of Civil Engineering, Middle East

会议类型: 国际会议

会议名称: 14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）