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The Cascadia Initiative: A Sea Change In Seismological Studies of Subduction Zones

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Title The Cascadia Initiative: A Sea Change In Seismological Studies of Subduction Zones
Names Toomey, Douglas R. (creator)
Allen, Richard M. (creator)
Barclay, Andrew H. (creator)
Dziak, Robert P. (creator)
Tréhu, Anne M. (creator)
et al. (creator)
Date Issued 2014-06 (iso8601)
Note This is the publisher’s final pdf. The published article is copyrighted by the Oceanography Society and can be found at: http://www.tos.org/oceanography/index.html.
Abstract Increasing public awareness that the Cascadia subduction zone in
the Pacific Northwest is capable of great earthquakes (magnitude 9 and greater)
motivates the Cascadia Initiative, an ambitious onshore/offshore seismic and geodetic
experiment that takes advantage of an amphibious array to study questions ranging
from megathrust earthquakes, to volcanic arc structure, to the formation, deformation
and hydration of the Juan De Fuca and Gorda Plates. Here, we provide an overview
of the Cascadia Initiative, including its primary science objectives, its experimental
design and implementation, and a preview of how the resulting data are being used by
a diverse and growing scientific community. The Cascadia Initiative also exemplifies
how new technology and community-based experiments are opening up frontiers
for marine science. The new technology—shielded ocean bottom seismometers—is
allowing more routine investigation of the source zone of megathrust earthquakes,
which almost exclusively lies offshore and in shallow water. The Cascadia Initiative
offers opportunities and accompanying challenges to a rapidly expanding community
of those who use ocean bottom seismic data.
Genre Article
Identifier Toomey, D.R., R.M. Allen, A.H. Barclay, S.W. Bell, P.D. Bromirski, R.L. Carlson, X. Chen, J.A. Collins, R.P. Dziak, B. Evers, D.W. Forsyth, P. Gerstoft, E.E.E. Hooft, D. Livelybrooks, J.A. Lodewyk, D.S. Luther, J.J. McGuire, S.Y. Schwartz, M. Tolstoy, A.M. Tréhu, M. Weirathmueller, and W.S.D. Wilcock. 2014. The Cascadia Initiative: A sea change in seismological studies of subduction zones. Oceanography 27(2):138–150. doi:10.5670/oceanog.2014.49

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