Magmatic and Tectonic Processes within Kilauea Volcano from Precise Earthquake Relocation and Numerical Modeling

小行星9614789 这项研究是建立在最近的成功与精确的地震位置在基拉韦厄，夏威夷，以了解更多的岩浆和构造过程之间的相互作用火山。 地震活动与高变形率和良好的大地测量覆盖率相结合，允许使用二维和三维弹性边界元模型对地震重新定位结果进行定量解释。 早在1991年，从火山东部裂谷的迁移描绘了一个2.5公里长的左侧走滑断层带，但在其大部分长度上只有100米高。 这两个显着的带状几何形状和长期模式的时刻释放定量协议的力学模型中，断裂带应力是“重置”的岩脉入侵于1982年，随后加载大地测量推断运动的基拉韦厄的深裂谷。 这类模型对该地震活动带的地震危险性估计具有重要意义。 这项研究是国家地震减灾计划的一个组成部分。 *** ??

9614789 Rubin This research is to build on recent success with precise earthquake locations at Kilauea, Hawaii, to learn more about the interaction between magmatic and tectonic processes within the volcano. Seismicity combined with high deformation rates and good geodetic coverage permit quantitative interpretation of the earthquake relocation results using two- and three-dimensional elastic boundary element models. Earlier relocations from the volcano's east rift in 1991 delineate a left-lateral strike-slip fault zone that is 2.5 km long but only 100 m tall over much of its length. Both this remarkable ribbon-like geometry and the long-term pattern of moment release are in quantitative agreement with a mechanical model in which the rift-zone stress was "reset" by dike intrusion in 1982, and subsequently loaded by geodetically-inferred motion of Kilauea's deep rift. These types of models are of importance to estimation of earthquake hazards in this seismically active zone. This research is a component of the National Earthquake Hazard Reduction Program. *** ??