Amami Oshima earthquake

...However, there have been examples of large earthquakes on the Sea of ​​Japan side, such as the Hamada earthquake of 1872 (Meiji 5) and the Tottori earthquake of 1943 ( M 7.2), and the western Seto Inland Sea has also seen some fairly large earthquakes, such as the Geiyo earthquake of 1905 ( M 7.1).
[Kyushu and Okinawa earthquake]
In some places inside the Ryukyu Trench, huge earthquakes of magnitude 8 occur, such as the 1911 Amami Oshima earthquake ( M 8.0). The 1771 (Shotoku 1) Yaeyama Islands earthquake was accompanied by a huge tsunami, which reached 85m on Ishigaki Island, and 80-90% of the residents were swept away (Yaeyama earthquake tsunami).

*Some of the terms used in reference to the "Amami Oshima Earthquake" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…しかし，日本海側には1872年(明治5)の浜田地震，1943年鳥取地震(M7.2)のような例もあり，また瀬戸内海西部でも1905年芸予地震(M7.1)のようなかなりの大地震が起こる。
［九州･沖縄地方の地震］
　琉球海溝の内側にも，場所によっては1911年奄美大島沖地震(M8.0)のようにM8クラスの巨大地震が起こる。1771年(正徳1)の八重山列島沖地震は巨大な津波を伴い，石垣島で85mに達し，住民の80～90％が流亡した(八重山地震津波)。…

※「奄美大島沖地震」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報