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No.109 (2020/9)  >

 
Title :沖合津波観測システムによる沖縄近海での津波早期検知の可能性
Title alternative :Potential for the early detection of tsunami using a detection system offshore of the Ryukyu Islands
Authors :仲間, 辰樹
中村, 衛
Issue Date :Sep-2020
Abstract :We examined changes in tsunami detection ability when an offshore tsunami observation network was installed around the Ryukyu arc. The offshore tsunami observation points around Okinawa and the Sakishima Islands, as well as the tsunami source areas, were first set, and then we numerically simulated tsunami and calculated the differences in their arrival times between offshore and coastal observation points. As a result, the detection time for tsunami generated in the Ryukyu Trench was shortened ~10 –20 minutes via offshore tsunami observations. For tsunami generated near the Okinawa Trough, the detection time was s hortened to ~10–30 minutes. These results suggest that the offshore tsunami observation network enables the detection of tsunami and the correction of tsunami warning information more quickly than do coastal tsunami observation points alone.
Type Local :紀要論文
ISSN :2434-8503
Publisher :琉球大学理学部
URI :http://hdl.handle.net/20.500.12000/46905
Citation :琉球大学理学部紀要 = BULLETIN OF THE FACULTY OF SCIENCE UNIVERSITY OF THE RYUKYUS no.109 p.21 -32
Appears in Collections:No.109 (2020/9)

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