Efforts to monitor and characterize the recent increasing seismicity in central Oklahoma
Efforts to monitor and characterize the recent increasing seismicity in central Oklahoma
复制标题
监测和描述俄克拉荷马州中部最近不断增加的地震活动的努力
DOI：
10.1190/tle34060628.1
复制
发表时间：
2015
期刊：
影响因子：
3.3
通讯作者：
P. Earle
中科院分区：
文献类型：
--
作者：
D. McNamara;J. Rubinstein;E. Myers;G. Smoczyk;H. Benz;Robert A. Williams;G. Hayes;D. Wilson;R. Herrmann;N. McMahon;R. Aster;E. Bergman;A. Holland;P. Earle
摘要俄克拉荷马州中部广大地区地震活动的急剧增加引起了人们对地震活动来源及其对当地社区和能源工业基础设施的潜在危害的关注。回顾了俄克拉荷马州中部地震序列的监测和特征描述工作。自2010年初以来，许多组织在俄克拉荷马州中部部署了临时便携式地震台站，以记录不断变化的地震活动。一个多事件重新定位的方法，以产生从2009年底到2015年初的中央俄克拉荷马州地震目录。区域矩张量（RMT）源参数确定的最大和最好的记录地震。将RMT结果与重新定位的地震活动相结合，可以确定重新激活的地下断层系统上发生的断层的长度、深度和类型。结果表明，大多数地震发生在近垂直的、最佳走向（东北-西南和西北-东南）的走滑断层上。
Abstract The sharp increase in seismicity over a broad region of central Oklahoma has raised concerns regarding the source of the activity and its potential hazard to local communities and energy-industry infrastructure. Efforts to monitor and characterize the earthquake sequences in central Oklahoma are reviewed. Since early 2010, numerous organizations have deployed temporary portable seismic stations in central Oklahoma to record the evolving seismicity. A multiple-event relocation method is applied to produce a catalog of central Oklahoma earthquakes from late 2009 into early 2015. Regional moment tensor (RMT) source parameters were determined for the largest and best-recorded earthquakes. Combining RMT results with relocated seismicity enabled determination of the length, depth, and style of faulting occurring on reactivated subsurface fault systems. It was found that the majority of earthquakes occur on near-vertical, optimally oriented (northeast-southwest and northwest-southeast) strike-slip fault...