Michael Brudzinski
Assistant Professor

Ph.D. (2002) University of Illinois
103 Shideler Hall
513-529-9758

brudzimr@muohio.edu

 

My research program contributes to our understanding of the Earth's structure and composition as well as how the Earth deforms. My approach employs primarily seismic and geodetic tools to study first-order problems of geophysics and geodynamics that are of interest to a broad audience. A long-term focus of my research is to investigate processes related to subduction, a fundamental feature of the plate tectonic engine that drives the evolution of the Earth. However, the complexity of subduction zones is formidable and subducted lithosphere cannot be accessed directly at the Earth's surface, which make subduction zones arguably the most poorly understood part of the global tectonic framework. By constructing innovative experiments with high-resolution techniques, I seek to place new and important constraints on unresolved problems like convection, seismogenesis, and lithospheric evolution.

Possible thesis/dissertation topics:

Seismic and petrologic structure of subducted lithosphere near Fiji and Vanuatu.

Relationships between earthquakes, stress patterns, and mantle dynamics beneath South America and the western Pacific.

Combined GPS and seismic estimates of convergent deformation in southern Mexico.

Current/recent graduate student research:

Investigating the nature of deep seismicity using earthquake rupture properties and the state of stress in slabs.

Seismic profiling of the mantle transition zone to examine the fate of subducted lithosphere and the nature of mantle convection.

Fabric in the lithosphere constrained by estimates of radial seismic anisotropy.

Seismic and aseismic strain release on a subduction interface, including space-time variability of interplate coupling, transient slip events and non-volcanic tremor.

Impact of experiential learning activities and increased quantitative exercises in geoscience classrooms.

Selected Publications:

Brudzinski, M.R. and W.-P. Chen (2005) Earthquakes and Strain in Subhorizontal Slabs, Journal of Geophysical Research, in press, 10.1029/2004JB003470.

Lay, T., Kanamori, H., Ammon, C.J., Nettles, M., Ward, S.N., Aster, R., Beck, S.L., Bilek, S.L., Brudzinski, M.R., Butler, R., DeShon, H.R., Ekstrom, G., Satake, K. and Sipkin, S. (2005), The Great Sumatra-Andaman Earthquake of December 26, 2004, Science, 308, 1127-1133.

Brudzinski, M.R. and W.-P. Chen (2003) Visualization of Seismicity Along Subduction Zones: Toward a Physical Basis, Seismological Research Letters, 74, 731-738.

Chen, W.-P. and M.R. Brudzinski (2003) Seismic Anisotropy in the Mantle Transition Zone Beneath Figi-Tonga, Geophysical Research Letters, 30, 13, 10.1029/2002GL016330, 4 pp.

Brudzinski, M.R. and W.-P. Chen (2003) A Petrologic Anomaly Accompanying Outboard Earthquakes Beneath Figi-Tonga: Corresponding Evidence from Broadband P and S Waveforms, Journal of Geophysical Research, 108, B6, 10.1029/2002JB002012, 19 pp.

Chen, W.-P. and M.R. Brudzinski (2001) Evidence for a Large-Scale Remnant of Subducted Lithosphere, Science, 292, 2475-2479.

Brudzinski, M., (2000) Ice Breaker-Rock and Mineral Identification, in ISGS GeoActivities Series: Activities and Other Resources for Teaching Geology, Illinois State Geological Survey, Champaign, Illinois, 2pp.

Selected Grants:

National Science Foundation 2005 - 2008 (with Chuck DeMets, University of Wisconsin)

A study of transient aseismic slip and non-volcanic tremor in southern Mexico with large aperture seismic and GPS arrays

National Science Foundation 2005 - 2006
International Collaboration for Study of Deep Subduction Using Seismic Arrays in New Caledonia and Vanuatu

Alice and Albert Weeks Endowed Research Fellowship (University of Wisconsin) 2002-2004
Observational Constraints on Intermediate Depth Earthquakes and the Overlying Mantle Wedge

Teaching Interests:

Geophysics and Seismology (senior undergraduate & graduate)
Environmental Geology - natural disasters focus (undergraduate)
Physics of Earth Systems (undergraduate)
Geodynamics (graduate)
Subduction Zones Seminar (graduate)


For more information visit Dr. Brudzinski's personal web page.

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