The Cascadia Initiative: A sea change in seismological studies of subduction zones

TitleThe Cascadia Initiative: A sea change in seismological studies of subduction zones
Publication TypeJournal Article
Year of Publication2014
AuthorsToomey D.R, Allen R.M, Barclay A.H, Bell S.W, Bromirski PD, Carlson R.L, Chen X.W, Collins J.A, Dziak R.P, Evers B., Forsyth D.W, Gerstoft P, Hooft E.EE, Livelybrooks D., Lodewyk J.A, Luther D.S, McGuire J.J, Schwartz S.Y, Tolstoy M., Trehu A.M, Weirathmueller M., Wilcock W.SD
Date Published2014/06
Type of ArticleArticle
ISBN Number1042-8275
Accession NumberWOS:000338758400018
Keywordscape; deformation; fore-arc; great earthquakes; juan-de-fuca; mendocino; northeast pacific; ocean-bottom seismometer; plate; united-states; whales

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.

Short TitleOceanography
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