A magnetotelluric investiagation of shallow conductivity sources beneath the Cascadia Volcanic Arc Public

http://ir.library.oregonstate.edu/concern/honors_college_theses/3j333442s

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • The Cascade Volcanic Arc has been the subject of extensive study in the past due to its active volcanism and its proximity to metropolitan areas. The triangle formed by the volcanoes Mount Saint Helens, Mount Rainier, and Mount Adams is of particular interest because of this potential danger and the geological complexity of the area. Anomalously high conductivity, known as the Southern Washington Cascades Conductor (SWCC), was detected in portions of the region and attributed to trapped marine sediment and partial melt from volcanism in different studies. The magnetotelluric method was used to study the shape and potential causes of the SWCC through acquiring surface electric and magnetic field data throughout the region in 2014, as part of the NSF funded iMUSH project. A linear northeast-to-southwest profile of stations was analyzed to produce a two-dimensional conductivity cross-section through inversion. The best fitting conductivity model was checked with the preexisting studies and found to confirm the existence of the SWCC in certain areas. The model also showed signs of marine sediment and volcanism presence in different portions of the region, though geological complexity and data set limitations prevented a definitive conclusion from being drawn.
License
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Non-Academic Affiliation
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2015-05-29T19:24:59Z (GMT) No. of bitstreams: 2license_rdf: 1370 bytes, checksum: cd1af5ab51bcc7a5280cf305303530e9 (MD5)BonnerLR2015.pdf: 1695127 bytes, checksum: 921b0e346f25455cb7dc9c2a6f1b6316 (MD5)
  • description.provenance : Made available in DSpace on 2015-05-29T19:24:59Z (GMT). No. of bitstreams: 2license_rdf: 1370 bytes, checksum: cd1af5ab51bcc7a5280cf305303530e9 (MD5)BonnerLR2015.pdf: 1695127 bytes, checksum: 921b0e346f25455cb7dc9c2a6f1b6316 (MD5)
  • description.provenance : Submitted by L Bonner (bonnerl@onid.orst.edu) on 2015-05-28T21:45:38ZNo. of bitstreams: 2license_rdf: 1370 bytes, checksum: cd1af5ab51bcc7a5280cf305303530e9 (MD5)BonnerLR2015.pdf: 1695127 bytes, checksum: 921b0e346f25455cb7dc9c2a6f1b6316 (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items