Study on the plate model of the Pacific plate

The Cabinet Office is conducting examination of the largest class earthquakes in the Japan Trench and the Kuril Trench in the “Council for studying megaquake models in the Japah trench and the Kuril trench (established in February 2015)". As a part of that, we examined the shape of the Pacific plate upper surface subducting beneath the Izu-Ogasawara Trench, Japan Trench and the Kuril Trench to create a plate model. Several models are proposed for Pacific plate along the Japan trench and the Kuril trench, However, some of them are limited to the specific areas and are not consistent with the hypocenter distribution. In this study, we created the plate model along the Izu-Ogasawara Trench, Japan Trench and the Kuril Trench based on the following data.