In the central island of Honshu; rich soil, such as Hill-based Fuji volcanic belt (from the central island of Honshu by the Pacific Ocean to the Izu Oshima Island seven to birds, such as seamounts mainly of sea birds volcanic belt (in the Honshu Island in the Sea of Japan side of the north-east Zunqian to mountain-based Nasu volcanic belt (from the western island of Hokkaido, Honshu Island, as central to north-east to Tokachi Yue, Huangshan, and other sulfur-based Kuril volcanic belt (From the central island of Hokkaido to the north-east extended to the Kuril Islands).
；以富土山等为主的富士火山带（从本州岛中部经太平洋上的大岛至伊豆七岛）；以鸟海山等为主的鸟海火山带（在本州岛东北部日本海一侧）；以樽前山等为主的那须火山带（从北海道岛西部经本州岛东北部至中部）；以十胜岳、硫黄山等为主的千岛火山带（从北海道岛中部向东北延伸至千岛群岛）。
Quick moment tensor solution of the August 9, 2009 Izu Islands, Japan earthquake
2009年8月9日日本伊豆群岛地震矩张量解
It is mainly due to the influence of the large cold water in the west side of Japan Izu islands generated by the meander of Kuroshio.
主要是由于黑潮大弯曲时在日本伊豆诸岛西侧伴随生成逆时针涡旋造成深层水的上涌所致。
Evidence from the AD 2000 Izu Islands earthquake swarm that stressing rate governs seismicity
2000年伊豆群岛震群应力加载率控制地震活动的证据