*Yoshihiro Nakayama^1,4、Menemenlis Dimitris¹、Schodlok Michael¹、Fenty Ian ¹、Wang Ou¹、Nguyen An ²、Heimbach Patrick ²、Dutrieux Pierre ³、Rignot Eric^1,4 (1.NASA Jet Propulsion Laboratory、2.University of Texas at Austin、3.Columbia University、4.University of California, Irvine)