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Seismic seiche-related oscillations in Lake Biwa, Japan, after the 2011 Tohoku earthquake
Seismic seiche-related oscillations caused by Rayleigh waves from large earthquakes are yet to be explored and elucidated comprehensively, then need to accumulate continuously. Herein, we investigated water level fluctuations in Lake Biwa of Japan from surface seiches following the 2011 Tohoku earth...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9652454/ https://www.ncbi.nlm.nih.gov/pubmed/36369359 http://dx.doi.org/10.1038/s41598-022-23939-7 |
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author | Iwaki, Maho Toda, Takashi |
author_facet | Iwaki, Maho Toda, Takashi |
author_sort | Iwaki, Maho |
collection | PubMed |
description | Seismic seiche-related oscillations caused by Rayleigh waves from large earthquakes are yet to be explored and elucidated comprehensively, then need to accumulate continuously. Herein, we investigated water level fluctuations in Lake Biwa of Japan from surface seiches following the 2011 Tohoku earthquake. Lake Biwa is the largest freshwater resource in Japan, and a small change in its water level can affect local ecosystems. Field observations were conducted during 2010–2012 using a water level gauge with a 1 mm resolution and 2 min data sampling interval. Fast Fourier transform and maximum entropy methods were used for data spectral analysis to distinguish the effects of inherent oscillations on water levels generated by the earthquake. We considered that water level changes were influenced by long-period Rayleigh waves. We observed a wave with a 3.08–3.10 h duration, which was close to the duration determined for the Rayleigh waves (3.08 h). The 3.08–3.10 h wave was caused by forced oscillation of Rayleigh waves characterised by a frequency close to the natural frequency and excited by the earthquake. Overall, our findings suggest that water level fluctuations can be good indicators of high-magnitude earthquakes. |
format | Online Article Text |
id | pubmed-9652454 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-96524542022-11-15 Seismic seiche-related oscillations in Lake Biwa, Japan, after the 2011 Tohoku earthquake Iwaki, Maho Toda, Takashi Sci Rep Article Seismic seiche-related oscillations caused by Rayleigh waves from large earthquakes are yet to be explored and elucidated comprehensively, then need to accumulate continuously. Herein, we investigated water level fluctuations in Lake Biwa of Japan from surface seiches following the 2011 Tohoku earthquake. Lake Biwa is the largest freshwater resource in Japan, and a small change in its water level can affect local ecosystems. Field observations were conducted during 2010–2012 using a water level gauge with a 1 mm resolution and 2 min data sampling interval. Fast Fourier transform and maximum entropy methods were used for data spectral analysis to distinguish the effects of inherent oscillations on water levels generated by the earthquake. We considered that water level changes were influenced by long-period Rayleigh waves. We observed a wave with a 3.08–3.10 h duration, which was close to the duration determined for the Rayleigh waves (3.08 h). The 3.08–3.10 h wave was caused by forced oscillation of Rayleigh waves characterised by a frequency close to the natural frequency and excited by the earthquake. Overall, our findings suggest that water level fluctuations can be good indicators of high-magnitude earthquakes. Nature Publishing Group UK 2022-11-11 /pmc/articles/PMC9652454/ /pubmed/36369359 http://dx.doi.org/10.1038/s41598-022-23939-7 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Iwaki, Maho Toda, Takashi Seismic seiche-related oscillations in Lake Biwa, Japan, after the 2011 Tohoku earthquake |
title | Seismic seiche-related oscillations in Lake Biwa, Japan, after the 2011 Tohoku earthquake |
title_full | Seismic seiche-related oscillations in Lake Biwa, Japan, after the 2011 Tohoku earthquake |
title_fullStr | Seismic seiche-related oscillations in Lake Biwa, Japan, after the 2011 Tohoku earthquake |
title_full_unstemmed | Seismic seiche-related oscillations in Lake Biwa, Japan, after the 2011 Tohoku earthquake |
title_short | Seismic seiche-related oscillations in Lake Biwa, Japan, after the 2011 Tohoku earthquake |
title_sort | seismic seiche-related oscillations in lake biwa, japan, after the 2011 tohoku earthquake |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9652454/ https://www.ncbi.nlm.nih.gov/pubmed/36369359 http://dx.doi.org/10.1038/s41598-022-23939-7 |
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