A Seismotectonic Model for the 300-Kilometer-Long Eastern Tennessee Seismic Zone
A Seismotectonic Model for the 300-Kilometer-Long Eastern Tennessee Seismic Zone
复制标题
田纳西州东部 300 公里长地震带的地震构造模型
作者：
C. Powell;G. Bollinger;M. Chapman;M. Sibol;A. Johnston;R. Wheeler
利用区域地震台网对微震进行了十年的监测，发现田纳西州东部存在一个定义明确的线性地震活动区。在过去十年中，该地区产生了美国落基山脉以东地区第二高的地震应变能释放，按地壳面积归一化后。这些数据表明，由区域板内应力产生的地震活动目前集中在相对较强和较弱的基底地壳块体的边界附近。
Ten years of monitoring microearthquakes with a regional seismic network has revealed the presence of a well-defined, linear zone of seismic activity in eastern Tennessee. This zone produced the second highest release of seismic strain energy in the United States east of the Rocky Mountains during the last decade, when normalized by crustal area. The data indicate that seismicity produced by regional, intraplate stresses is now concentrating near the boundary between relatively strong and weak basement crustal blocks.