Index Catalog // ScholarsArchive@OSU

Testing spatial correlation of subduction interplate coupling and forearc morpho-tectonics

Creator:: Kaye, Grant David
Abstract:: The two largest earthquakes ever recorded, the 1964 M[subscript w] 9.2 Alaskan and 1960 M[subscript w] 9.5 Chilean, occurred on seismogenic plate interfaces at subduction zones. It has been theorized that the catastrophic failure of a locked zone along the contact between the downgoing slab and the upper plate causes...
Resource Type:: Masters Thesis
Full Text:: Correlation of Subduction Interplate Coupling and Forcarc Morpho-Tectonics By Grant David Kayc A THESIS

A 3-D Tomographic Model of the P-wave Velocity Structure of the Central Cascadia Forearc

Creator:: Kenyon, Christopher Bradford
Abstract:: Signals from the R/V Langseth’s tuned airgun array were recorded on an array of 33 EarthScope FlexArray seismometers deployed in the Oregon Coast Range from 43.5° to 45°N as part of the 2012 Ridge2Trench experiment to image the structure of the Juan de Fuca plate. This segment of the Juan...
Resource Type:: Masters Thesis
Full Text:: seamounts in this region and hinted at large velocity variations of the overlying forearc crust

Investigation of Deep Seismic Reflections Beneath the Forearc in the South Central Chile Subduction Zone

Creator:: Zhang, Edward
Abstract:: The south central Chilean margin is one of the most seismically active subduction zones on Earth, generating some of the largest earthquakes on the planet, including the largest ever recorded in 1960 near Valdivia, Chile (Mw 9.5). Using the 15 km streamer and 6600 in3 tuned seismic airgun array aboard...
Resource Type:: Masters Thesis
Full Text:: , and MCS21 overlie the forearc along strike of the subduction zone and were selected for reflection

Stratigraphic correlation of seismoturbidites and the integration of sediment cores with 3.5 kHz chirp subbottom data in southern Cascadia

Creator:: Black, Bran
Abstract:: In order to evaluate the shallow stratigraphy along the southern Cascadia abyssal margin and northern California abyssal plain, CHIRP subbottom profiles capable of imaging individual turbidite beds in the upper tens of meters of the subsurface were collected. Reflectors imaged with the 3.5 kHz CHIRP subbottom data represent turbidite beds...
Resource Type:: Masters Thesis
Full Text:: Correlation of Seismoturbidites and the Integration of Sediment Cores with 3.5 kHz Chirp Subbottom Data in

Seamount subduction and earthquakes

Creator:: Watts, Anthony B., Koppers, Anthony A. P., and Robinson, David P.
Abstract:: Seamounts are ubiquitous features of the seafloor that form part of the fabric of oceanic crust. When a seamount enters a subduction zone, it has a major affect on forearc morphology, the uplift history of the island arc, and the structure of the downgoing slab. It is not known, however,...
Resource Type:: Article
Full Text:: subduction zone (Bangs et al., 2006), and it may modify the subsidence and uplift history of a forearc

Structure and seismic hazards of the offshore Cascadia forearc and evolution of the Neogene forearc basin

Creator:: McNeill, Lisa C.
Abstract:: The Cascadia subduction zone has been characterized as a typical Chilean-type subduction zone based on qualitative comparisons of plate age and convergence rate, with simple forearc structure. However, the discovery of unusual structural styles of deformation, variations in the morphology of the forearc, and its absence of seismic activity suggest...
Resource Type:: Dissertation
Full Text:: subduction zone based on qualitative comparisons of plate age and convergence rate, with simple forearc

Oblique strike-slip faulting of the central Cascadia submarine forearc

Creator:: Goldfinger, Chris, Kulm, LaVerne D., Yeats, Robert S., McNeill, Lisa, and Hummon, Cheryl
Abstract:: At least nine WNW trending left-lateral strike-slip faults have been mapped on the Oregon-Washington continental margin using sidescan sonar, seismic reflection, and bathymetric data, augmented by submersible observations. The faults range in length from 33 to 115 km and cross much of the continental slop. Five faults offset both the...
Resource Type:: Article
Full Text:: Oblique strike-slip faulting of the central Cascadia submarine forearc Chris Goldfinger and LaVeme D

Seismicity at the Cascadia plate boundary beneath the Oregon continental shelf

Creator:: Williams, Mark Charles
Abstract:: Since 2003, 39 small earthquakes have been detected offshore central Oregon in the nominally locked part of the Cascadia subduction zone, where very little seis- mic activity has been recorded in spite of a paleo-seismic record of great subduction events. Although the regional earthquake bulletin reports depths of 29 and...
Resource Type:: Masters Thesis
Full Text:: from local and distant sources. The Cas- cadia subduction zone, along the western edge of the North

Exploring Volcano-Tectonic Connections in Cascadia – Temporal Linkages between Tephra Deposition and Megathrust Earthquakes

Creator:: Gutierrez, Joel C.
Abstract:: Explosively erupting volcanoes and megathrust earthquakes (Mw 8+ magnitude) occur at subduction zones and adjacent volcanic arcs. Volcanic eruptions are observed occurring close in time to megathrust earthquakes in the historical record from at least the 18th century CE to present in locations globally, including Japan in 1707 CE (Chesley...
Resource Type:: Masters Thesis
Full Text:: research has considered both spatial and temporal aspects of subduction zones and volcanic arcs as

Magnitude Limits of Subduction Zone Earthquakes

Creator:: Rong, Yufang, Jackson, David D., Magistrale, Harold, and Goldfinger, Chris
Abstract:: Maximum earthquake magnitude (m[subscript x]) is a critical parameter in seismic hazard and risk analysis. However, some recent large earthquakes have shown that most of the existing methods for estimating m[subscript x] are inadequate. Moreover, m[subscript x] itself is ill-defined because its meaning largely depends on the context, and it...
Resource Type:: Article
Full Text:: Magnitude Limits of Subduction Zone Earthquakes by Yufang Rong, David D. Jackson, Harold Magistrale, and

ScholarsArchive@OSU

Testing spatial correlation of subduction interplate coupling and forearc morpho-tectonics

A 3-D Tomographic Model of the P-wave Velocity Structure of the Central Cascadia Forearc

Investigation of Deep Seismic Reflections Beneath the Forearc in the South Central Chile Subduction Zone

Stratigraphic correlation of seismoturbidites and the integration of sediment cores with 3.5 kHz chirp subbottom data in southern Cascadia

Seamount subduction and earthquakes

Structure and seismic hazards of the offshore Cascadia forearc and evolution of the Neogene forearc basin

Oblique strike-slip faulting of the central Cascadia submarine forearc

Seismicity at the Cascadia plate boundary beneath the Oregon continental shelf

Exploring Volcano-Tectonic Connections in Cascadia – Temporal Linkages between Tephra Deposition and Megathrust Earthquakes

Magnitude Limits of Subduction Zone Earthquakes

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