Active Margin (IMAGE) Columbia Climate School Caption Map of the Hikurangi subduction zone and locations where electromagnetic receivers were deployed to collect data. Credit Christine Chesley, using GeoMapApp and data from William Ryan et al., Geochemistry, Geophysics, Geosystems (2009) Usage Restrictions Credit must be given. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.