1. Interplate earthquakes, which occur at plate boundaries, are more common.2. An interplate earthquake results in an immediate stress drop along the fault. 3. The earthquake showed a weakly coupled interplate boundary in the nearby region. 4. The interplate coupling under the Sugura Bay is not weak. 5. Most of the foreshocks are interplate earthquakes with thrust-type focal mechanisms. 6. Both interplate and intraplate earthquakes appeared in the aftershocks offshore Sanriku coast with considerable proportions. 7. This earthquake was an interplate earthquake between the Cocos Plate and the North American Plate. 8. It was not clear whether the 1953 Concepci�n earthquake was an interplate or intraplate earthquake. 9. Intraplate earthquake have, on average, more stress drop than that of the interplate earthquake. 10. Interplate earthquakes also differ fundamentally from intraplate earthquakes in the way stress is released and recovered.
