Detailed magnetic and gravity surveys around the hydrothermal area off Kumejima Island in the Mid-Okinawa Trough, southwestern Japan

Kazuya Kitada1, Takafumi Kasaya2, Hisanori Iwamoto2 and Yoshifumi Nogi3, (1)Japan Agency for Marine-Earth Science and Technology, Institute for Extra-cutting-edge Science and Technology Avant-garde Research of Life, Yokosuka, Japan, (2)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan, (3)National Institute of Polar Research (NIPR), Tachikawa, Japan