ORIGINAL RESEARCH published: 13 December 2018 doi: 10.3389/feart.2018.00223 Complex and Cascading Triggering of Submarine Landslides and Turbidity Currents at Volcanic Islands Revealed From Integration of High-Resolution Onshore and Offshore Surveys Michael A. Clare 1*, Tim Le Bas 1, David M. Price 1,2, James E. Hunt 1, David Sear 3, Matthieu J. B. Cartigny 4, Age Vellinga 2, William Symons 2, Christopher Firth 5 and Shane Cronin 6 1 National Oceanography Centre, University of Southampton Waterfront Campus, Southampton, United Kingdom, 2 National Oceanography Centre, School of Ocean and Earth Science, University of Southampton, Southampton, United Kingdom, 3 Department of Geography & Environment, University of Southampton, Southampton, United Kingdom, 4 Department of Geography, Durham University, Durham, United Kingdom, 5 Department of Earth and Planetary Sciences, Macquarie Edited by: University, Sydney, NSW, Australia, 6 School of Environment, University of Auckland, Auckland, New Zealand Ivar Midtkandal, University of Oslo, Norway Reviewed by: Submerged flanks of volcanic islands are prone to hazards including submarine Gijs Allard Henstra, landslides that may trigger damaging tsunamis and sediment-laden seafloor flows (called University of Bergen, Norway “turbidity currents”). These hazards can break seafloor infrastructure which is critical for Miquel Poyatos Moré, University of Oslo, Norway global communications and energy transmission. Small Island Developing States are *Correspondence: particularly vulnerable to these hazards due to their remote and isolated nature, small size, Michael A. Clare high population densities, and weak economies. Despite their vulnerability, few detailed
[email protected] offshore surveys exist for such islands, resulting in a geohazard “blindspot,” particularly in Specialty section: the South Pacific.