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Full-Text Articles in Volcanology
Hydroacoustic Investigations Of Submarine Landslides At West Mata Volcano, Lau Basin, Jacqueline Caplan-Auerbach, R. P. Dziak, D. R. Bohnenstiehl, W. W. Chadwick, T. -K. Lau
Hydroacoustic Investigations Of Submarine Landslides At West Mata Volcano, Lau Basin, Jacqueline Caplan-Auerbach, R. P. Dziak, D. R. Bohnenstiehl, W. W. Chadwick, T. -K. Lau
Geology Faculty Publications
Submarine landslides are an important process in volcano growth yet are rarely observed and poorly understood. We show that landslides occur frequently in association with the eruption of West Mata volcano in the NE Lau Basin. These events are identifiable in hydroacoustic data recorded between ~5 and 20 km from the volcano and may be recognized in spectrograms by the weak and strong powers at specific frequencies generated by multipathing of sound waves. The summation of direct and surface-reflected arrivals causes interference patterns in the spectrum that change with time as the landslide propagates. Observed frequencies are consistent with propagation …
Izu-Bonin-Mariana Rear Arc: The Missing Half Of The Subduction Factory, Yoshihiko Tamura, Abigail K. Barker, Cathy J. Busby, Julien L.R. Berger, Peter Blum, Everton M. Bongiolo, Gilles Guèrin, Manuela Bordiga, Graham D.M. Andrews, Susan M. Debari, James B. Gill, Cedric Hamelin, Jihui Jia, Eleanor H. John, Ann-Sophie Jonas, Martin Jutzeler, Myriam A.C. Kars, Zachary A. Kita, Kevin Konrad, Susan H. Mahony, Michelangelo Martini, Takashi Miyazaki, Robert J. Musgrave, Debora B. Nascimento, Alexander R.L. Nichols, Julia M. Ribeiro, Tomoki Sato, Julie C. Schindlbeck, Axel K. Schmitt, Susanne M. Straub, Maryline J. Vautravers, Yang Yang
Izu-Bonin-Mariana Rear Arc: The Missing Half Of The Subduction Factory, Yoshihiko Tamura, Abigail K. Barker, Cathy J. Busby, Julien L.R. Berger, Peter Blum, Everton M. Bongiolo, Gilles Guèrin, Manuela Bordiga, Graham D.M. Andrews, Susan M. Debari, James B. Gill, Cedric Hamelin, Jihui Jia, Eleanor H. John, Ann-Sophie Jonas, Martin Jutzeler, Myriam A.C. Kars, Zachary A. Kita, Kevin Konrad, Susan H. Mahony, Michelangelo Martini, Takashi Miyazaki, Robert J. Musgrave, Debora B. Nascimento, Alexander R.L. Nichols, Julia M. Ribeiro, Tomoki Sato, Julie C. Schindlbeck, Axel K. Schmitt, Susanne M. Straub, Maryline J. Vautravers, Yang Yang
Geology Faculty Publications
4GT) lies in the western part of the Izu fore-arc basin, ~60 km east of the arc-front volcano Aogashima, ~170 km west of the axis of the Izu-Bonin Trench, 1.5 km west of Ocean Drilling Program (ODP) Site 792, and at 1776 meters below sea level (mbsl). It was drilled as a 150 m deep geotechnical test hole for potential future deep drilling (5500 meters below seafloor [mbsf]) at proposed Site IBM-4 using the D/V Chikyu. Core from Site U1436 yielded a rich record of Late Pleistocene explosive volcanism, including distinctive black glassy mafic ash layers that may record large-volume …