Infrasound generated by the 2016–2017 shallow submarine eruption of Bogoslof volcano, Alaska
Infrasound generated by the 2016–2017 shallow submarine eruption of Bogoslof volcano, Alaska
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2016-2017 年阿拉斯加博戈斯洛夫火山浅层海底喷发产生的次声
DOI：
10.1007/s00445-019-1355-0
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发表时间：
2020
影响因子：
3.5
通讯作者：
M. Haney
中科院分区：
文献类型：
--
作者：
J. Lyons;A. Iezzi;D. Fee;H. Schwaiger;A. Wech;M. Haney
2016 年至 2017 年博戈斯洛夫火山浅层海底喷发在 9 个月内产生了大量次声信号，这些信号被距离火山 59 至 800 多公里的六个阿拉斯加火山观测站 (AVO) 阵列记录下来。由于博戈斯洛夫附近缺乏地球物理监测，并且火山云反复产生到飞行高度，因此在火山喷发期间远程次声监测变得至关重要； AVO 首次广泛依赖区域阵列的自动次声检测来及时发送正在进行的活动的通知。 70 起喷发事件中的大多数至少在一个阵列上检测到，但没有一个阵列检测到所有事件，主要是因为喷发期间大气条件变化很大。声学传播模型有助于解释阵列检测中的一些变化，但也凸显了区域传播模型的局限性。据我们所知，这是第一个记录良好的浅海水中发生的爆炸性喷发次声波的例子，为了解这种独特环境中的喷发动力学提供了广泛的见解。低频次声波（0.1–1 Hz）的主导地位归因于发生在数十米深的海水下的火山喷发。高频次声信号主要局限于火山喷发，其中喷口与海水的主要相互作用被隔离，或者在一些熔岩穹丘生长在海平面以上的情况下。
The 2016–2017 shallow submarine eruption of Bogoslof volcano produced numerous infrasound signals over 9 months that were recorded on six Alaska Volcano Observatory (AVO) arrays at ranges of 59 to over 800 km from the volcano. The lack of geophysical monitoring near Bogoslof and the repeated production of volcanic clouds to flight levels made monitoring by remote infrasound critical during the eruption; for the first time, AVO relied extensively on automated infrasound detections from regional arrays to dispatch timely notifications of the ongoing activity. Most of the 70 eruptive events were detected on at least one array, but no array detected all of the events mainly because atmospheric conditions were highly variable during the eruption. Acoustic propagation modeling helps explain some of the variation in array detections but also highlights limitations in regional propagation models. To our knowledge, this is the first example of well-recorded infrasound from an explosive eruption occurring in shallow seawater, providing extensive insights into eruption dynamics in this unique environment. The dominance of low-frequency infrasound (0.1–1 Hz) is attributed to eruptions occurring beneath tens of meters of seawater. Higher-frequency infrasound signals were mostly limited to eruptions where the vent was isolated from major interaction with seawater or in several cases where a lava dome grew above sea level.
博戈斯洛夫火山的共喷震颤：区域距离的地震波场组成
影响因子：
3.5
作者：
Haney, Matthew M.;Fee, David;McKee, Kathleen F.;Lyons, John J.;Matoza, Robin S.;Wech, Aaron G.;Tepp, Gabrielle;Searcy, Cheryl;Mikesell, T. Dylan
通讯作者：
Mikesell, T. Dylan
2016 年至 2017 年阿拉斯加博戈斯洛夫火山喷发期间，充冰是否产生了火山闪电？
影响因子：
3.5
作者：
Van Eaton, Alexa R.;Schneider, David J.;Smith, Cassandra M.;Haney, Matthew M.;Lyons, John J.;Said, Ryan;Fee, David;Holzworth, Robert H.;Mastin, Larry G.
通讯作者：
Mastin, Larry G.