A 2-D Magnetotelluric Investigation of the Cascadia Subduction Zone

Simple item page
dc.contributor.authorWogan, Nicholas
dc.date.accessioned2016-10-25T18:31:59Z
dc.date.available2016-10-25T18:31:59Z
dc.date.issued2016-06
dc.description39 pages. A thesis presented to the Department of Physics and the Clark Honors College of the University of Oregon in partial fulfillment of the requirements for degree of Bachelor of Science, Spring 2016.en_US
dc.description.abstractI have produced four 2-D magnetotelluric conductivity inversions of MOCHA data roughly between the latitudes of 43N and 46N that indicate fluid variation along strike in the Cascadia subduction zone. I directly compare these results to Wannamaker et al. 2014 EMSLAB inversion and find the models to be very similar despite the use of different data sets and inversion methods. Conductivity structure along the plate interface supports the hypothesis that there is "partial creeping" occurring in the locked zone in central Cascadia, as well as the possible presence of a secondary, inboard locked zone at 44.5N in the ETS region. The variability of conductivity along strike also suggests a more permeable crust in the northern region of Cascadia directly overhead the ETS zone, and more fluid accumulation in this same region. This study indicates that a more permeable overlying crust, combined with larger amounts of fluid present may be critical components of rapid ETS occurrence.en_US
dc.identifier.urihttps://hdl.handle.net/1794/20393
dc.language.isoen_USen_US
dc.publisherUniversity of Oregonen_US
dc.relation.ispartofseriesUniversity of Oregon theses, Dept. of Physics, Honors College, B.S., 2016;
dc.rightsCreative Commons BY-NC-ND 4.0-USen_US
dc.subjectGeophysicsen_US
dc.subjectGeologyen_US
dc.subjectMagnetotelluricsen_US
dc.subjectCascadiaen_US
dc.subjectSubduction Zoneen_US
dc.subjectMegathrusten_US
dc.subjectEarthquakeen_US
dc.titleA 2-D Magnetotelluric Investigation of the Cascadia Subduction Zoneen_US
dc.typeThesis / Dissertationen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Final Thesis-Wogan.pdf
Size:
1.59 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Name:
license.txt
Size:
2.23 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Clark Honors College Theses