September 1, 2023 marked the 100-year anniversary of the 1923 Great Kanto earthquake in Japan. This megathrust earthquake under the Sagami Trough had a magnitude of 7.9, generating large ground shaking and subsequent fires across the Kanto region. What is less documented is the tsunami that was generated as a result of the earthquake and which caused extensive damage and loss of life to coastal areas around Tokyo.
Tohoku University, a Gallagher Research Centre partner, has carried out new research analysing the 1923 Great Kanto earthquake and the tsunami that followed.