Atmospheric waves and global seismoacoustic observations of the January 2022 Hunga eruption, Tonga
Atmospheric waves and global seismoacoustic observations of the January 2022 Hunga eruption, Tonga
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DOI：
10.1126/science.abo7063
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发表时间：
2022-07-01
期刊：
影响因子：
56.9
通讯作者：
Wilson, David C.
中科院分区：
文献类型：
--
作者：
Matoza, Robin S.;Fee, David;Wilson, David C.
2022年1月15日，汤加匈牙利火山的高潮喷发在大气中造成了现代地球物理记录中没有记载的规模的爆炸。该事件产生了各种地面和星载仪器网络在全球范围内观测到的各种大气波。最突出的是表面引导的兰姆波(小于或类似于0.01赫兹)，我们观察到它在6天内围绕地球传播了4次(加3次)。根据兰姆波幅度的测量，匈牙利的高潮爆炸在规模上与1883年的克拉卡托火山喷发相当。匈牙利火山喷发产生了令人惊叹的全球探测到的次声(0.01至20赫兹)、远距离(约10,000公里)可听声和电离层扰动。世界各地的地震仪记录了纯地震和空地耦合波。海空耦合很可能导致了迅速到来的海啸。在这里，我们重点介绍对大气波的特殊观测。
The 15 January 2022 climactic eruption of Hunga volcano, Tonga, produced an explosion in the atmosphere of a size that has not been documented in the modern geophysical record. The event generated a broad range of atmospheric waves observed globally by various ground-based and spaceborne instrumentation networks. Most prominent was the surface-guided Lamb wave (less than or similar to 0.01 hertz), which we observed propagating for four (plus three antipodal) passages around Earth over 6 days. As measured by the Lamb wave amplitudes, the climactic Hunga explosion was comparable in size to that of the 1883 Krakatau eruption. The Hunga eruption produced remarkable globally detected infrasound (0.01 to 20 hertz), long-range (similar to 10,000 kilometers) audible sound, and ionospheric perturbations. Seismometers worldwide recorded pure seismic and air-to-ground coupled waves. Air-to-sea coupling likely contributed to fast-arriving tsunamis. Here, we highlight exceptional observations of the atmospheric waves.