Enhanced and asymmetric melting beneath the southern Mariana back-arc spreading ridge under the influence of the Pacific plate subduction

Tetsuo Matsuno, Kobe University, Kobe, Japan, Nobukazu Seama, Kobe Univ, Kobe, Japan, Haruka Shindo, Kobe University, Kobe, Hyogo, Japan, Yoshifumi Nogi, NIPR National Institute of Polar Research, Tokyo, Japan and Kyoko Okino, AORI, Univ. Tokyo, Kashiwa, Japan