New Constraints on the Magmatic System beneath Newberry Volcano from the Analysis of Active and Passive Source Seismic Data and Ambient Noise

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dc.contributor.advisorToomey, Douglasen_US
dc.contributor.authorHeath, Benen_US
dc.date.accessioned2015-01-14T15:59:26Z
dc.date.available2015-01-14T15:59:26Z
dc.date.issued2015-01-14
dc.description.abstractUsing joint P-wave seismic tomography, receiver functions, and ambient noise we image the magmatic structure beneath Newberry Volcano, located near Bend, Oregon. Use of active source and teleseismic events in a joint tomographic inversion provides the ray crossings necessary to resolve a low velocity body around 4 km depth. Receiver functions show large lateral heterogeneity and are consistent with the location of a low velocity body derived from the tomography but require a larger low velocity anomaly. Ambient noise autocorrelations are used to image a low velocity reflector, located at ~3 km depth, shallower than the imaged low velocity body recovered using tomography and receiver functions. Ultimately, our results reveal a magma chamber at 3-4 km depth beneath Newberry caldera, with an overlying partially molten sill at ~3 km depth. These results show the usefulness of dense seismometer deployments over volcanoes.en_US
dc.identifier.urihttps://hdl.handle.net/1794/18744
dc.language.isoen_USen_US
dc.publisherUniversity of Oregonen_US
dc.rightsAll Rights Reserved.en_US
dc.subjectNewberryen_US
dc.subjectNoiseen_US
dc.subjectSeismologyen_US
dc.subjectTomographyen_US
dc.subjectVolcanoen_US
dc.titleNew Constraints on the Magmatic System beneath Newberry Volcano from the Analysis of Active and Passive Source Seismic Data and Ambient Noiseen_US
dc.typeElectronic Thesis or Dissertationen_US
thesis.degree.disciplineDepartment of Geological Sciencesen_US
thesis.degree.grantorUniversity of Oregonen_US
thesis.degree.levelmastersen_US
thesis.degree.nameM.S.en_US

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