Item type |
デフォルトアイテムタイプ(フル)(1) |
公開日 |
2020-10-08 |
タイトル |
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タイトル |
沖合地震観測システムによる沖縄近海での緊急地震速報の改善可能性 |
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言語 |
ja |
タイトル |
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タイトル |
Improvements to an earthquake early warning system from an observation system offshore of the Ryukyu Islands |
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言語 |
en |
作成者 |
親川, 佳乃子
中村, 衛
Oyakawa, Kanoko
Nakamura, Mamoru
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アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
We verified the changes in the detection times for the arrival of P-waves, the time difference between the arrivals of S- and P-waves, and the accuracy of hypocenter determination when data from offshore seismic stations were added to those of land-based seismic stations in the Ryukyu Islands via numerical simulation. As a result, the detection times of earthquakes in the Ryukyu Trench and Okinawa Trough were shortened by 15 – 23 seconds and 10–16 seconds, respectively. The time from the detection of P-waves to the arrival of S-waves for an earthquake occurring in the Ryukyu Trench increased by 15 –20 seconds. The accuracy of hypocenter determination also increased when the offshore observation points were used in combination with those from onshore. From these results, we concluded that the accuracy of hypocenter determination could be improved by using both onshore and offshore observation points, which should improve the earthquake early warning system of the Ryukyu Islands. |
内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
紀要論文 |
出版者 |
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言語 |
ja |
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出版者 |
琉球大学理学部 |
言語 |
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言語 |
jpn |
資源タイプ |
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資源タイプ |
departmental bulletin paper |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
出版タイプ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
識別子 |
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識別子 |
http://hdl.handle.net/20.500.12000/46906 |
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識別子タイプ |
HDL |
収録物識別子 |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
2434-8503 |
収録物名 |
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言語 |
ja |
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収録物名 |
琉球大学理学部紀要 |
収録物名 |
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言語 |
en |
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収録物名 |
BULLETIN OF THE FACULTY OF SCIENCE UNIVERSITY OF THE RYUKYUS |
書誌情報 |
号 109,
p. 9-19,
発行日 2020-09
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