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

Kazuya Kitada1, Takafumi Kasaya1, Hisanori Iwamoto1 and Yoshifumi Nogi2, (1)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan, (2)National Institute of Polar Research (NIPR), Tachikawa, Japan