摘要
基于震级残差统计、线性回归和正交回归方法,选取2008年至2016年3月内蒙古测震台网记录的内蒙古东部地区地震观测报告和波形事件,确立该区量规函数,建立近震震级与面波震级间的转换关系。研究表明,HLH、HLR和AGL等5个台站震级偏差较大,可能由地震台站场地响应衰减或放大、台基风化等造成;全国量规函数仅在140 km<Δ≤280 km时适用于内蒙古东部地区;采用正交回归方法(OR)得到古东部地区M_(S东部)=0.99M_L-0.12。
Using report and seismic events recorded on eastern Inner Mongolia digital seismic networksince 2008 to March 2016 and residual statistical, linear regression and orthogonal regressionmethods, ML calibration function was modified and the relationship between ML and MS iscorrected. The higher residual in five stations, such as HLH, HLR and AGL, may be causedby the amplification or attenuation of station site response, or stylobate weathering. The chinacalibration function is suitable for Inner Mongolia region with epicentral distance between140 km and 60 km, yet unsuitable in other case. Using orthogonal regression method （OR） inthe eastern regions of Inner Mongolia, MS = 0.9 ML- 0.12 relationship is found.
出处
《地震地磁观测与研究》
2016年第5期1-9,共9页
Seismological and Geomagnetic Observation and Research
基金
中国地震局地震科技星火项目(项目编号:XH15008)
关键词
震级
量规函数
近震震级ML
面波震级MS
震级转换
magnitude,calibration function,near earthquake magnitude ML,surface wavemagnitude MS,magnitude conversion
