| 有流体参与作用下的震源参数特征——以广西凌云凤山震群、龙滩库区地震为例 |
| |
| 引用本文： | 龙政强,;孙学军,;姚宏,;刘双庆,;谢夜玉,;韦旭鸿.有流体参与作用下的震源参数特征——以广西凌云凤山震群、龙滩库区地震为例[J].华北地震科学,2014(4):10-16. |
| |
| 作者姓名： | 龙政强 ;孙学军 ;姚宏 ;刘双庆 ;谢夜玉 ;韦旭鸿 |
| |
| 作者单位： | [1]广西壮族自治区地震局,南宁530022; [2]天津市地震局,天津300201 |
| |
| 基金项目： | 中国地震局测震台网青年骨干培养专项（项目编号：20140318,20130202） |
| |
| 摘 要： | 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。
|
| 关 键 词： | 震群 水库地震 震源参数 地震矩 拐角频率 |
Characteristics of Seismic Source Parameters under the Influence of Fluid---Taking Guangxi Lingyun Fengshan Earthquake Swarm,Longtan Reservoir Earthquakes as Examples |
| |
| Institution: | LONG Zheng-qiang, SUN Xue-jun, YAO Hong, LIU Shuang-qing, XIE Ye-yu, WEI Xu-hong (1. Earthquake Administration of Guangxi Zhuang Autonomous Region, NanNing 530022, China; 2. Earthquake Administration of Tianjin municipality, Tianjin 300201, China) |
| |
| Abstract: | 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 . |
| |
| Keywords: | earthquake swarm reservoir earthquake source parameters seismic moment corner frequen-cy |
| 本文献已被 维普 等数据库收录！ |
|
