摘要
根据Andrews谱积分的方法,采用近震源Brune圆盘模型,测定了1999年11月29日辽宁岫岩MS5.4地震序列的震源参数。结果表明,得到辐射能量与震级的关系,与古登堡-里克特给出的关系基本一致;地震矩与震级的关系中斜率和截距都小于陈培善等给出的全球结果;视应力与震级呈半对数线性关系;在双对数坐标下视应力随地震矩的增加而增加;地震矩随拐角频率的7次方衰减,在地震序列的不同阶段各参数的拟合关系斜率也不完全相同。
Based on the Andrews＂ spectra integral method, the near-source Brune model is employed to determine the source parameters of the November 29, 1999 Xiuyan 5.4 earthquake sequence in this paper. The following results are obtained. The radiant energymagnitude relationship is compatible with that given by Gutenberg and Richter. The slope and intercept of the moment-magnitude relationship are smaller than those of the global relationship given by Chen Pei-shan et al. The relationship between the logarithm of apparent stress and magnitude shows linear. The apparent stress increases with moment in the logarithmic coordinates. The moment decreases with the seventh power of frequency. There are different slopes in the different stages of the sequence.
出处
《地震》
CSCD
北大核心
2007年第4期59-67,共9页
Earthquake
基金
地震科学联合基金项目(106024)
关键词
岫岩地震序列
震源参数
标度关系
Xiuyan earthquake sequence
Source parameters
Scaling relationship
