*Donna J Shillington¹、Anne Bécel¹、Jiyao Li¹、Mladen R Nedimovic^2,1、Demian Saffer³、Geoffrey Abers⁴、Harold Kuehn²、Spahr C Webb¹、Katie Keranen⁴ (1.Lamont-Doherty Earth Observatory of Columbia University、2.Dalhousie University、3.Pennsylvania State University、4.Cornell University)