Tonankai earthquake

Japanese: 東南海地震 - とうなんかいじしん

An earthquake struck the Tokai and Kinki regions on December 7, 1944. The epicenter was located off the coast of the Kii Peninsula at 136°12′ east longitude and 33°42′ north latitude, with a magnitude of 8.0, and caused a large tsunami of 8-10m in Owase and other areas along the Kumano-Nada coast. 998 people were killed, 3,059 people were injured, 26,130 houses were completely destroyed, and 46,950 houses were partially destroyed. Since it was during World War II, there have been no thorough investigations. There are nine historically recorded large earthquakes that are thought to have occurred in the area located on the east side of the Nankai Trough from the Kumano-Nada to the Enshu-Nada in the eastern part of the Kii Peninsula, including the Showa Tonankai Earthquake. However, the Showa Tonankai Earthquake was the only earthquake that occurred in this region alone, and the others were linked to the Tokai and Nankai earthquakes, and all of them are thought to have caused large tsunamis. The Earthquake Investigation Committee of the National Headquarters for Earthquake Research Promotion predicts that the probability of an earthquake occurring after 2010 is 60-70% within the next 30 years, and 90% within the next 50 years. There is also a possibility of a triple linked earthquake in the Tokai, Tonankai, and Nankai regions, with the largest predicted to be magnitude 8.7.

Source : Heibonsha Encyclopedia About MyPedia Information

Japanese:

1944年12月７日，東海・近畿地方を襲った地震。震源は東経136°12′，北緯33°42′の紀伊半島沖，マグニチュード8.0，尾鷲ほか熊野灘沿岸で８〜10mの大津波。死者998人，負傷者3059人，家屋全壊２万6130，半壊４万6950。第２次大戦中のため十分な調査がなされていない。紀伊半島の東部の熊野灘から遠州灘にかけて南海トラフの東側に位置する領域で起こったと考えられる過去の大地震で歴史上記録に残されたものは，上記の昭和の東南海大地震を含めて９回とされるが，この震源域単独で起こったものは，昭和東南海大地震のみで，他は東海地震，南海地震と連動し，いずれも大津波を引き起こしたと考えられている。国の地震調査研究推進本部の地震調査委員会は2010年以降の発生確率を30年以内で60〜70％，50年以内で90％と予測している。また，東海・東南海・南海地震の三連動地震の可能性も指摘されていて，最大のものはマグニチュード8.7と予想されている。

出典　株式会社平凡社百科事典マイペディアについて　情報

<<: The Tale of Dounio Dowa

>>: Tounan-in Temple