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Filtering by: Creator Tréhu, Anne Subject Cascadia Subduction Zone

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:

Plate Boundary Beneath the Oregon Continental Shelf Abstract approved: Anne M. Tréhu Since 2003, 39
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:

Anne M. Tréhu Signals from the R/V Langseth’s tuned airgun array were recorded on an array
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