A possible space-based tsunami early warning system using observations of the tsunami ionospheric hole

Masashi Kamogawa; Yoshiaki Orihara; Chiaki Tsurudome; Yuto Tomida; Tatsuya Kanaya; Daiki Ikeda; Aditya Riadi Gusman; Yoshihiro Kakinami; Jann Yenq Liu; Atsushi Toyoda

doi:10.1038/srep37989

A possible space-based tsunami early warning system using observations of the tsunami ionospheric hole

Masashi Kamogawa, Yoshiaki Orihara, Chiaki Tsurudome, Yuto Tomida, Tatsuya Kanaya, Daiki Ikeda, Aditya Riadi Gusman, Yoshihiro Kakinami, Jann Yenq Liu, Atsushi Toyoda

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37 Scopus citations

Abstract

Ionospheric plasma disturbances after a large tsunami can be detected by measurement of the total electron content (TEC) between a Global Positioning System (GPS) satellite and its ground-based receivers. TEC depression lasting for a few minutes to tens of minutes termed as tsunami ionospheric hole (TIH) is formed above the tsunami source area. Here we describe the quantitative relationship between initial tsunami height and the TEC depression rate caused by a TIH from seven tsunamigenic earthquakes in Japan and Chile. We found that the percentage of TEC depression and initial tsunami height are correlated and the largest TEC depressions appear 10 to 20 minutes after the main shocks. Our findings imply that Ionospheric TEC measurement using the existing ground receiver networks could be used in an early warning system for near-field tsunamis that take more than 20 minutes to arrive in coastal areas.

Original language	English
Article number	37989
Journal	Scientific Reports
Volume	6
DOIs	https://doi.org/10.1038/srep37989
State	Published - 1 Dec 2016

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title = "A possible space-based tsunami early warning system using observations of the tsunami ionospheric hole",

abstract = "Ionospheric plasma disturbances after a large tsunami can be detected by measurement of the total electron content (TEC) between a Global Positioning System (GPS) satellite and its ground-based receivers. TEC depression lasting for a few minutes to tens of minutes termed as tsunami ionospheric hole (TIH) is formed above the tsunami source area. Here we describe the quantitative relationship between initial tsunami height and the TEC depression rate caused by a TIH from seven tsunamigenic earthquakes in Japan and Chile. We found that the percentage of TEC depression and initial tsunami height are correlated and the largest TEC depressions appear 10 to 20 minutes after the main shocks. Our findings imply that Ionospheric TEC measurement using the existing ground receiver networks could be used in an early warning system for near-field tsunamis that take more than 20 minutes to arrive in coastal areas.",

author = "Masashi Kamogawa and Yoshiaki Orihara and Chiaki Tsurudome and Yuto Tomida and Tatsuya Kanaya and Daiki Ikeda and Gusman, {Aditya Riadi} and Yoshihiro Kakinami and Liu, {Jann Yenq} and Atsushi Toyoda",

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T1 - A possible space-based tsunami early warning system using observations of the tsunami ionospheric hole

AU - Kamogawa, Masashi

AU - Orihara, Yoshiaki

AU - Tsurudome, Chiaki

AU - Tomida, Yuto

AU - Kanaya, Tatsuya

AU - Ikeda, Daiki

AU - Gusman, Aditya Riadi

AU - Kakinami, Yoshihiro

AU - Liu, Jann Yenq

AU - Toyoda, Atsushi

PY - 2016/12/1

Y1 - 2016/12/1

N2 - Ionospheric plasma disturbances after a large tsunami can be detected by measurement of the total electron content (TEC) between a Global Positioning System (GPS) satellite and its ground-based receivers. TEC depression lasting for a few minutes to tens of minutes termed as tsunami ionospheric hole (TIH) is formed above the tsunami source area. Here we describe the quantitative relationship between initial tsunami height and the TEC depression rate caused by a TIH from seven tsunamigenic earthquakes in Japan and Chile. We found that the percentage of TEC depression and initial tsunami height are correlated and the largest TEC depressions appear 10 to 20 minutes after the main shocks. Our findings imply that Ionospheric TEC measurement using the existing ground receiver networks could be used in an early warning system for near-field tsunamis that take more than 20 minutes to arrive in coastal areas.

AB - Ionospheric plasma disturbances after a large tsunami can be detected by measurement of the total electron content (TEC) between a Global Positioning System (GPS) satellite and its ground-based receivers. TEC depression lasting for a few minutes to tens of minutes termed as tsunami ionospheric hole (TIH) is formed above the tsunami source area. Here we describe the quantitative relationship between initial tsunami height and the TEC depression rate caused by a TIH from seven tsunamigenic earthquakes in Japan and Chile. We found that the percentage of TEC depression and initial tsunami height are correlated and the largest TEC depressions appear 10 to 20 minutes after the main shocks. Our findings imply that Ionospheric TEC measurement using the existing ground receiver networks could be used in an early warning system for near-field tsunamis that take more than 20 minutes to arrive in coastal areas.

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A possible space-based tsunami early warning system using observations of the tsunami ionospheric hole

Abstract

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