Six‐Axis Ground Motion Measurements of Caldera Collapse at Kīlauea Volcano, Hawai'i—More Data, More Puzzles?
Six‐Axis Ground Motion Measurements of Caldera Collapse at Kīlauea Volcano, Hawai'i—More Data, More Puzzles?
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夏威夷基拉韦厄火山火山口塌陷的六轴地面运动测量——更多数据，更多谜题？
DOI：
10.1029/2019gl085999
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发表时间：
2020
影响因子：
5.2
通讯作者：
H. Igel
中科院分区：
文献类型：
--
作者：
J. Wassermann;F. Bernauer;B. Shiro;I. Johanson;F. Guattari;H. Igel
使用传统地震仪器对大地震和火山引起的事件进行近场记录时，往往会受到当地倾斜和信号饱和的不明影响。最近的硬件进步导致了BluSeis-3A的开发，这是一种非常宽带、高灵敏度的旋转运动传感器。我们将该传感器安装在夏威夷火山观测站(USGS)永久部署的经典仪器(即平移地震仪、加速计和倾斜仪)附近。在那里，我们能够记录到与2018年Kī劳埃亚峰会喷发后期的大坍塌事件有关的3次~MW 5地震。位于距离这些震源原点不到2公里的地方，组合的六轴平移和旋转测量显示出明显的围绕所有三个坐标轴的静态旋转。有了这六个分量的记录，我们第一次能够重建地震期间定点地面运动的完整时程。
Near‐field recordings of large earthquakes and volcano‐induced events using traditional seismological instrumentation often suffer from unaccounted effects of local tilt and saturation of signals. Recent hardware advances have led to the development of the blueSeis‐3A, a very broadband, highly sensitive rotational motion sensor. We installed this sensor in close proximity to permanently deployed classical instrumentation (i.e., translational seismometer, accelerometer, and tiltmeter) at the Hawaiian Volcano Observatory (USGS). There, we were able to record three ~Mw 5 earthquakes associated with large collapse events during the later phase of the 2018 Kīlauea summit eruption. Located less than 2 km from the origins of these sources, the combined six‐axis translational and rotational measurements revealed clear static rotations around all three coordinate axes. With these six component recordings, we have been able to reconstruct the complete time history of ground motion of a fixed point during an earthquake for the first time.
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影响因子：
3.9
作者：
Bernauer, M.;Fichtner, A.;Igel, H.
通讯作者：
Igel, H.
应变旋转耦合及其对旋转地面运动测量的影响
影响因子：
1.6
作者：
van Driel;J. Wassermann;M. F. Nader;B. S. A. Schuberth;H. Igel
通讯作者：
H. Igel
影响因子：
2.8
作者：
Donner, S.;Bernauer, M.;Igel, H.
通讯作者：
Igel, H.
影响因子：
1.6
作者：
Hadziioannou, Celine;Gaebler, Peter;Igel, Heiner
通讯作者：
Igel, Heiner