CAJ | 학술논문

对广西暴雨诱发的地震、水库地震及天然地震的地震波数字频谱参数特征进行分析；计算凌云凤山震群、2007—2013年广西桂东南地区天然地震及龙滩库区 ML ≥2．5级地震波形资料，获得凌云凤山震群、桂东南天然地震、龙滩库区地震震源参数。研究表明：凌云凤山震群和龙滩库区地震的应力降、震源尺度和拐角频率在数值范围、平均值都基本相同；它们的应力降和拐角频率明显小于桂东南地区地震，其中应力降约小1个量级；而它们的震源尺度明显大于同震级的桂东南地区地震。这些特征显示出数字地震波频谱分析也可较好地反映凌云凤山震群由暴雨诱发所致的成因。
대엄서폭우유발적지진、수고지진급천연지진적지진파수자빈보삼수특정진행분석；계산릉운봉산진군、2007—2013년엄서계동남지구천연지진급룡탄고구 ML ≥2．5급지진파형자료，획득릉운봉산진군、계동남천연지진、룡탄고구지진진원삼수。연구표명：릉운봉산진군화룡탄고구지진적응력강、진원척도화괴각빈솔재수치범위、평균치도기본상동；타문적응력강화괴각빈솔명현소우계동남지구지진，기중응력강약소1개량급；이타문적진원척도명현대우동진급적계동남지구지진。저사특정현시출수자지진파빈보분석야가교호지반영릉운봉산진군유폭우유발소치적성인。
In this article ,digital seismic source spectrums of Guangxi earthquakes are analyzed ,w hich in‐clude that induced by storm or reservoir and the natural occurrence .By calculating Lingyun‐Fengshan earthquake swarm ,the earthquakes (ML ≥2 .5) being adjacent to Longtan reservoir and the natural earth‐quake in southeastern Guangxi in 2007 to 2013 ,their parameters of seismic source are acquired respective‐ly .The results indicate that for Lingyun‐Fengshan and Longtan reservoir earthquakes ,their stress drop , source radius and corner frequency are nearly the same at the range of values and the average .Their stress drop and the corner frequency are significantly less than these earthquakes in southeast of Guangxi .And their stress drops are smaller about 1 order of magnitude .However ,the source radiuses are significantly greater than that of the same seismic magnitude in southeast of Guangxi .The above of characteristics show that spectrum analysis of digital seismic wave can also reflect the storm‐induced cause of Lingyun Fengshan earthquake sw arm .