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Repeat bathymetric surveys at 1-metre resolution of lava flows erupted at Axial Seamount in April 2011

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dc.creator Caress, David W.
dc.creator Clague, David A.
dc.creator Paduan, Jennifer B.
dc.creator Martin, Julie F.
dc.creator Dreyer, Brian M.
dc.creator Chadwick, William W., Jr.
dc.creator Denny, Alden
dc.creator Kelley, Deborah S.
dc.date.accessioned 2012-09-24T20:31:45Z
dc.date.available 2012-09-24T20:31:45Z
dc.date.issued 2012-07
dc.identifier.citation Caress, D., Clague, D., Paduan, J., Martin, J., Dreyer, B., Chadwick, W., . . . . (2012). Repeat bathymetric surveys at 1-metre resolution of lava flows erupted at axial seamount in april 2011. NATURE GEOSCIENCE, 5(7), 483-488. doi: 10.1038/ngeo1496 en_US
dc.identifier.uri http://hdl.handle.net/1957/33833
dc.description This is the publisher’s final pdf. The published article is copyrighted by the Nature Publishing Group and can be found at: http://www.nature.com/ngeo/index.html. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. en_US
dc.description.abstract At sites with frequent submarine volcanic activity, it is difficult to discern between new and pre-existing lava flows. In particular, the distribution of the fissures from which lava erupts, the routes taken by lava flows and the relationship between the new flows and the pre-existing seafloor bathymetry are often unclear. The volcanic and hydrothermal systems of Axial Seamount submarine volcano in the Pacific Ocean have been studied intensively since eruptions were detected in 1998 (refs 1, 2) and 2011 (ref. 3). Here we combine pre- and post-eruption bathymetric surveys³⁻⁸ with 1-m lateral resolution and 0.2-m vertical precision, to precisely map the extent and thickness of the lava flows, calculate the volume of lava and unambiguously identify eruptive fissures from the April 2011 eruption. Where the new lava flows extend beyond the boundaries of the repeated surveys, we use shipboard multibeam surveys to map the flows with lower resolution. We show that the eruption produced both sheet and lobate flows associated with high eruption rates and low-eruption-rate pillow mounds. We find that lava flows erupted from new as well as existing fissures and tended to reoccupy existing flow channels. This reoccupation makes it difficult to map submarine flows produced during one eruption without before-and-after bathymetric surveys. en_US
dc.description.sponsorship A grant from the David and Lucile Packard Foundation to the Monterey Bay Aquarium Research Institute and a contribution from J. Delaney (Univ. Washington) supported acquisition of the 2011 AUV D. Allan B. data. B.M.D. was supported by NSF award OCE-1061176. PMEL contribution 3791. en_US
dc.language.iso en_US en_US
dc.publisher Nature Publishing Group en_US
dc.relation.ispartofseries Nature Geoscience en_US
dc.relation.ispartofseries Vol. 5 no. 7 en_US
dc.subject Volcanology en_US
dc.subject mineralogy and petrology en_US
dc.subject Structural geology en_US
dc.subject tectonics and geodynamics en_US
dc.title Repeat bathymetric surveys at 1-metre resolution of lava flows erupted at Axial Seamount in April 2011 en_US
dc.type Article en_US
dc.description.peerreview yes en_US
dc.identifier.doi 10.1038/ngeo1496

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