论文标题
在2018年峰会倒塌期间，负各向同性地震矩张量，迁移和循环地震性
Negative isotropic seismic moment tensors, migrating and cyclic seismicity during the 2018 summit collapse at K\=ılauea caldera
论文作者
论文摘要
K \ =ılauea火山的2018年裂谷区喷发伴随着其峰会的显着折叠。在5月至8月之间，喷发和倒塌序列包括70,000多个地震（M $ \ geq $ 0）和54次主要地震（M $ \ geq $ 5）。我们分析了K \ =ılauea峰会地区的地震性，并估计了对54 m $ $ \ geq $ 5事件的不确定性的地震全矩张量。这些事件几乎每天发生，并伴随着强烈的地震性，该地震性集中在Halema`uma`upit pit火山口下的0-3 km深度之间。降压器揭示了部分椭圆模式（地图视图），该模式向下迁移$ \ sim $ 200 m。张力张量揭示出非常一致的机制，具有负各向同性源类型和局部不确定性以及垂直的P轴取向。从张量的那一刻起，我们得出了poisson的比率，该比率是可变的（$ν= 0.1-0.3）$的倒塌事件，并从6月26日开始融合到$ν\ sim0.28 $。
The 2018 rift zone eruption of K\=ılauea volcano was accompanied by a remarkable and episodic collapse of its summit. Between May-August the eruption and collapse sequence included over 70,000 earthquakes (M$\geq$0) and 54 major earthquakes (M$\geq$5). We analyzed the seismicity in the K\=ılauea summit region and estimated seismic full moment tensors with their uncertainties for the 54 M$\geq$5 events. These events occurred at almost daily intervals and were accompanied by intense seismicity which was concentrated between 0-3 km depths beneath the Halema`uma`u pit crater. The hypocenters reveal partial elliptical patterns (map view) that migrated downward by $\sim$200 m. The moment tensors reveal remarkably consistent mechanisms, with negative isotropic source types and localized uncertainties, and vertical P-axis orientations. From the moment tensors we derived Poisson's ratios which are variable ($ν=0.1-0.3)$ for the first half of the collapse events and converged to $ν\sim0.28$ from June 26 onward.
