Brandon Schmandt

Ph.D., University of Oregon, 2011. (Assistant Professor)
Northrop Hall, Rm. 204. Email:

Research and Academic Interests:

Geophysics. Research interests are rooted in observational seismology, with a primary focus on resolving Earth’s seismic properties to gain insight into the evolving structure of tectonic plates and the convective processes that occur beneath the plates.

Link to My Personal Page:

My personal page

Recent Publications:


Wang, Y., D.W. Forsyth, C.J. Rau, N. Carriero, B. Schmandt, J. Gaherty, B. Savage (in press), Fossil slabs attached to unsubducted fragments of the Farallon plate,

Lin, F.-C., V.C. Tsai, B. Schmandt, Z. Duputel, Z. Zhan, (in press) Extracting seismic core phases with array interferometry, DOI: 10.1002/grl.50237.


Schmandt, B. (2012) Mantle transition zone shear velocity gradients beneath USArray, Earth and Planetary Science Letters, 355-356, 119-130, doi: 10.1016/j.epsl.2012.08.031.

Lin, F.-C., B. Schmandt, and V. C. Tsai (2012), Joint inversion of Rayleigh wave phase velocity and ellipticity using USArray: Constraining velocity and density structure in the upper crust, Geophys. Res. Lett., 39, L12303, doi:10.1029/2012GL052196.

Schmandt, B., K. G. Dueker, E. D. Humphreys, S. H. Hansen (2012), Hot mantle upwelling across the 660 beneath Yellowstone. Earth and Planetary Science Letters, 331-332, 224-236, doi:10.1016/j.epsl.2012.03.025.

Chu, R., B. Schmandt, D. V. Helmberger (2012), Juan de Fuca subduction zone structure from tomography and waveform modeling, J. Geophys. Res., 117, B03304, doi:10.1029/2012JB009146.

Chu, R., B. Schmandt, D. V. Helmberger (2012), Upper mantle P-velocity structure beneath the midwestern United States derived from triplicated waveforms, Geochemistry Geophysics Geosystems, 13, Q0AK04, doi:10.1029/2011GC003818 .


Karlstrom, K. E., et al (2011), Mantle-driven dynamic uplift of the Rocky Mountains and Colorado Plateau and its surface response: Toward a unified hypothesis. Lithosphere, doi:10.1130/L150.1.

O’Driscoll, L., E. D. Humphreys, B. Schmandt, (2011), Time corrections to teleseismic P delays derived from SKS splitting parameters and implications for western U.S. P-wave tomography. Geophysical Research Letters, 38 L19304.

Humphreys, E. D., B. Schmandt (2011), Looking for mantle plumes. Physics Today, 64, 8, 34-39.

Schmandt, B., K.G. Dueker, S.M. Hansen, J.J. Jasbinsek, Z. Zhang (2011), A sporadic low-velocity layer atop the western U.S. mantle transition zone and short-wavelength variations in transition zone discontinuities. Geochemistry Geophysics Geosystems, doi:10.1029/2011GC003668.

Levander, A., B. Schmandt, M. S. Miller, K. Liu, K. E. Karlstrom, R. S. Crow, C.-T. A. Lee, and E. D. Humphreys (2011), Ongoing Colorado Plateau uplift by delamination-style convective lithospheric downwelling. Nature, 472, 461–465, doi:10.1038/nature10001.

Schmandt, B. and E. D. Humphreys (2011), Seismically Imaged Relict Slab from the 55 Ma Siletzia Accretion to Northwest USA. Geology, 39, 175-178.

Crow, R.S., K.E., Karlstrom, Y. Asmerom, B. Schmandt, V. Polyak, A. DuFrane (2011), Shrinking of the Colorado Plateau via lithospheric mantle erosion: evidence from Nd and Sr isotopes and geochronology of Neogene basalts. Geology, 39, 27-30.


Bezada, M. J., A. Levander, and B. Schmandt (2010) Subduction in the southern Caribbean: Images from finite-frequency P wave tomography. J. Geophys. Res., 115, B12333, doi:10.1029/2010JB007682.

Schmandt, B. and E. D. Humphreys (2010), Complex subduction and small-scale convection revealed by body wave tomography of the western U.S. upper mantle. Earth and Planetary Science Letters, 297, 435-445, doi:10.1016/j.epsl.2010.06.047.

Schmandt, B. and E. D. Humphreys (2010), Seismic heterogeneity and small-scale convection in the southern California upper mantle. Geochemistry Geophysics Geosystems. 11, Q05004, doi:10.1029/2010GC003042.

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