NUMERICAL SIMULATION OF TSUNAMI IMPACT FROM THE 1/15/22 ERUPTION OF THE HUNGA TONGA - HUNGA HA’APAI VOLCANO
NUMERICAL SIMULATION OF TSUNAMI IMPACT FROM THE 1/15/22 ERUPTION OF THE HUNGA TONGA - HUNGA HA’APAI VOLCANO
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DOI：
10.9753/icce.v37.management.85
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发表时间：
2023-09
期刊：
影响因子：
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通讯作者：
Stephan Grilli;Maryam Mohammadpour;Annette Grilli;Cheng Zhang;Dave Tappin;Alessandro Novellino;Sebastien Watt
中科院分区：
文献类型：
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作者：
Stephan Grilli;Maryam Mohammadpour;Annette Grilli;Cheng Zhang;Dave Tappin;Alessandro Novellino;Sebastien Watt
火山‘爆炸性’喷发引发的海啸很少见，上一次灾难性事件发生在1883年(Verbeek，1885年)，在此期间，海啸由压力冲击波在远场产生，在舜达海峡的火山近场由几种潜在的地质机制产生，包括火山碎屑流、火山灰柱和/或破火山口坍塌。1955年1月22日，世界协调时4点15分，匈牙利汤加-匈牙利哈派火山(HTHHV)于2018年12月20日开始爆发，爆发时间为1000年一遇，爆发时发生了一系列大型水下爆炸，释放出巨大的能量(4-18Mt TNT)，并向平流层喷射了58公里的大火山灰羽流。我们模拟了喷发产生的近场和远场海啸，但在本文中，我们重点分析和验证近场影响与现场数据。
Tsunamis from volcanic ‘explosive’ eruptions are rare, with the last catastrophic event being Krakatau in 1883 (Verbeek, 1885), during which, tsunamis were generated in the far-field by pressure shock-waves and in the nearfield of the volcano, in the Sunda Straits, by several potential geological mechanisms including pyroclastic flows, ash column, and/or caldera collapse. On 1/22/55, at about 4:15 UTC, a one in 1,000 year eruption of the Hunga Tonga-Hunga Ha’a-pai Volcano (HTHHV), that had started on12/20/21, reached its paroxysm with a series of large underwater explosions, releasing enormous energy (4-18 Mt of TNT), and ejecting a large ash plume 58 km into the stratosphere. We simulate both the near- and far-field tsunami generation from the eruption, but in this paper we focus on analyzing and validating the near-field impact against field data.