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Re-Estimation of a Plausible Model of the Earthquake Fault as the Source of the 1771 Great Meiwa Tsunami Based on the Assessment of the Run-Up Height by Okinawa Prefecture, Japan
Faculty of Science, University of the Ryukyus, Okinawa Prefecture, Japan
- 1 Faculty of Science, University of the Ryukyus, Okinawa Prefecture, Japan
Open Journal of Geology·Volume 10 (2020)·Pages 1250–1261·Published 10 December 2020·DOI10.4236/ojg.2020.1012062
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Abstract
Plausible parameters of the earthquake fault which caused the 1771 Great Meiwa Tsunami were re-estimated by comparing the result of the tsunami run-up height by the numerical simulation by Okinawa Prefectural Government and those by 1) run-up height derived from previous field works, and 2) a historical record describing the run-up height in Miyako District. The re-estimation shows that the length of the fault off Miyako and Yaeyama districts is 300 km or more. However, the slip of the fault is 20 m off Yaeyama and 8 - 14 m off Miyako.
KeywordsThe 1771 Great Meiwa TsunamiOkinawaEarthquake Fault
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