Lauren Schambach¹, Stephan T Grilli¹, David R Tappin², Alessandro Novellino³, Luke Bateson⁴, Udrekh Udrekh⁵, Marina C Frederik⁶ and Purna Putra⁷, (1)University of Rhode Island, Narragansett, RI, United States, (2)British Geological Survey Keyworth, Nottinghamshire, NG12, United Kingdom, (3)British Geological Survey, Keyworth, United Kingdom, (4)British Geological Survey, Nottingham, United Kingdom, (5)Badan Pengkajian dan Penerapan Teknologi, PTRRB-TPSA, DKI Jakarta, Indonesia, (6)Badan Pengkajian dan Penerapan Teknologi, PTPSW-TPSA, DKI Jakarta, Indonesia, (7)Indonesian Institute of Sciences (LIPI), Research Center for Geo-technology (Geotek), Bandung, Indonesia