Sagami Bay

Sagami Bay is an inlet of the Pacific Ocean south of Kanagawa Prefecture, bounded by the Miura Peninsula to the east and the Izu Peninsula to the west.

Miura Peninsula: A peninsula in Kanagawa Prefecture projecting south into the Pacific Ocean and separating Tokyo Bay from Sagami Bay. Its western shore forms the bay’s eastern boundary.
Sagami Bay marine ecosystems: The diverse communities of marine organisms inhabiting Sagami Bay’s coastal and deep waters. The bay’s varied depths and currents sustain unusually diverse marine habitats.
Sagami Trough: A deep submarine trench where the Philippine Sea Plate meets the North American Plate near central Japan. This tectonic feature lies beneath the bay and shapes its deepest waters.
Great Kantō earthquake: The devastating 1923 earthquake and fire disaster that struck the Kantō region of Japan. It exposed the destructive earthquake risk associated with faults beneath the bay.
Izu Peninsula: A mountainous peninsula in Shizuoka Prefecture extending south into the Pacific Ocean. Its eastern coast bounds the bay’s western side.
Shonan: A coastal region of Kanagawa Prefecture along the northern shore of Sagami Bay. Its beaches and resort towns are among the bay’s best-known coastal uses.
Sagami Bay earthquake of 1923: A magnitude 7.9 earthquake that struck the Sagami Trough region on September 1, 1923. The earthquake’s rupture beneath the bay devastated parts of the surrounding region.
Nankai megathrust earthquakes: Large earthquakes produced by rupture along the Nankai Trough off southwestern Japan. They provide a comparison for assessing Japan’s other major subduction-zone hazards.
Kanagawa Prefecture: A prefecture in eastern Japan, south of Tokyo, with Pacific and Tokyo Bay coastlines. Much of Sagami Bay’s northern shore lies along this prefecture.
Enoshima: A small island and seaside destination off Fujisawa in Kanagawa Prefecture. The island anchors tourism and coastal recreation on the bay’s northern shore.

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