Global fast-traveling tsunamis driven by atmospheric Lamb waves on the 2022 Tonga eruption-Reference-Cited by-同舟云学术

Global fast-traveling tsunamis driven by atmospheric Lamb waves on the 2022 Tonga eruption

Published:2022-07 Issue:6601 Volume:377 Page:91-94
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Kubota Tatsuya¹^ORCID,Saito Tatsuhiko¹^ORCID,Nishida Kiwamu²^ORCID

Affiliation:

1. National Research Institute for Earth Science and Disaster Resilience, Tsukuba, 305-0006, Ibaraki, Japan.

2. Earthquake Research Institute, the University of Tokyo, 113-0032, Tokyo, Japan.

Abstract

On 15 January 2022, the Hunga Tonga-Hunga Ha‘apai volcano erupted, producing tsunamis worldwide including first waves which arrived more than 2 hours earlier than what is expected for conventional tsunamis. We investigated the generation and propagation mechanisms of the tsunami “forerunner,” and our simulation found that fast-moving atmospheric Lamb waves drove the leading sea height rise whereas the scattering of the leading waves related to bathymetric variations in the Pacific Ocean produced subsequent long-lasting tsunamis. Tsunamis arriving later than the conventionally expected travel time are composed of various waves generated from both moving and static sources, which makes the tsunami, due to this eruption, much more complex and longer-lasting than ordinary earthquake-induced tsunamis.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference38 articles.

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