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Subduction zone-related Nonvolcanic Tremor in Oaxaca, Mexico

Hinojosa-Prieto, Hector R.
http://rave.ohiolink.edu/etdc/view?acc_num=miami1242326095

Abstract Details

2009, Master of Science, Miami University, Geology and Environmental Earth Science.
The Oaxaca subduction zone is ideal for studying plate boundary deformation as rapid convergent rates, shallow subduction, and short trench-to-coast distances bring the seismogenic and transition zones of the plate interface over 100 km inland. A new deployment of 7 seismometers is used to examine whether non-volcanic tremor (NVT) signals can characterize the boundary between the seismogenic and transition zones. This study finds NVT exists in Oaxaca based on emergent seismic energy, narrow frequency spectra, and appropriate relative timing. Prominent days-to-week-long episodes during the 15 months analyzed recur every 2-2.5 months in a given region, but at different times in the east and west. Waveforms analyzed with a semi-automated process for identifying source locations find NVT near the 45-km contour for plate interface depth, correlated with high conductivity interpreted to be slab fluids, and just downdip from slow slip and ultra-slow velocities interpreted to represent high pore fluid pressure.
Michael Brudzinski, PhD (Advisor)
Brian Currie, PhD (Committee Member)
Jason Rech, PhD (Committee Member)
26 p.
Geophysics
Nonvolcanic Tremor; Transition zone; Oaxaca region; Mexican subduction zone

Recommended Citations

Citations

  • Hinojosa-Prieto, H. R. (2009). Subduction zone-related Nonvolcanic Tremor in Oaxaca, Mexico [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1242326095

    APA Style (7th edition)

  • Hinojosa-Prieto, Hector. Subduction zone-related Nonvolcanic Tremor in Oaxaca, Mexico. 2009. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1242326095.

    MLA Style (8th edition)

  • Hinojosa-Prieto, Hector. "Subduction zone-related Nonvolcanic Tremor in Oaxaca, Mexico." Master's thesis, Miami University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=miami1242326095

    Chicago Manual of Style (17th edition)

miami1242326095
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© 2009, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.