Heather R. DeShon

Associate Professor

Roy M. Huffington Department
     of Earth Sciences

Southern Methodist University

Contact Information:
PO Box 750395
Dallas, TX 75275-0395
(214) 768-2916 (office)
(214) 768-2701 (fax)

Email: hdeshon at smu.edu

B.S., Geophysics and Mathematics, Southern Methodist University, May 1999

        Ph.D., Earth Sciences (Geophysics), University of California Santa Cruz, June 2004
            Dissertation title: Seismogenic zone structure along the Middle America
                                         subduction zone, Costa Rica

Research Interests
  • Earthquake generation within subduction zones and intraplate settings
  • Seismogenic zone processes
  • Local earthquake tomography and waveform cross-correlation
  • Volcano seismology
        For further information follow link to research page (updated Feb. 2009)

Courses (link)
  • Dynamic Earth I
  • Inverse Methods in Geophysics
  • Data Analysis in Geophysics
  • Seminar in Seismology-The Seismogenic Zone of Subduction Thrust Fault
  • Antelope: Love it or hate it, here is how to use it

Current Research Projects

Subduction Studies
  • Imaging 3D Seismic Velocity and Attenuation Heterogeneity Along the Seismogenic Zone of Costa Rica and Nicaragua, NSF MARGINS Program, PI: H.R. DeShon (UoM)
  • Defining locations and patch sizes for slow earthquake ruptures in subduction zones, NSF Marine Geology and Geophysics, PIs: H.R. DeShon (UoM), S.L. Bilek (New Mexico Tech), E.R. Engdahl (U. Colorado)

New Madrid and Central US Studies
  • Northern Embayment Lithosphere Experiment, NSF Earthscope, Collaborators: C. Langston, H.R. DeShon, C.A. Powell, S. Horton (UoM), C. Ammon (Penn State), and B. Hermann (SLU)  
  • Imaging Body Wave Attenuation Heterogeneity within the New Madrid Seismic Zone using Local Earthquakes, USGS NEHRP, PI: H.R. DeShon (UoM)
  • Detection and Location of Non-Volcanic Tremor in the New Madrid Seismic Zone, USGS NEHRP, PIs: H.R. DeShon, C. Langston, S. Horton, M. Withers (UoM)
  • Improving Regional Ground Motion Attenuation Boundaries and Models Using EarthScope USArray Data for Use in the National Seismic Hazards Mapping Project, USGS NEHRP, PIs: C. Cramer and H.R. DeShon
  • Integrating USArray and Cooperative New Madrid Seismic Network Data to Establish Central US Catalog Location and Magnitude Sensitivities, USGS NEHRP, PI: H.R. DeShon
  • Swarm Activity within the New Madrid Seismic Zone

Past Projects

  • High-precision teleseismic relocation and tomography for the M 9 and M 8.7 Sumatra great earthquake sequences, NSF Geophysics,  Collaborators: H.R. DeShon (UoM), Cliff Thurber, Haijang Zhang, Jeremy Pesicek (Univ. Wisconsin), E.R. Engdahl (Univ. Colorado), M. Brudzinski (Univ. Miami Ohio), and F. Waldhauser (Lamont Observatory, Columbia Univ.)
  • Imaging 3D Seismic Velocity and Attenuation Heterogeneity Along the Seismogenic Zone of Costa Rica and Nicaragua and Costa Rica Seismogenic Zone Experiment (CRSEIZE), NSF Margins Program, PIs Schwartz (UCSC), Dixon (Miami), Dorman and Brown (Scripps)
  • Earthquake Location and 3D Velocity Determination of Alaskan Volcanoes using Waveform Cross-correlation and Double-difference Tomography, PIs Thurber (U. Wisconsin) and Prejean (AVO)

Selected Recent Publications

Dunn, M., H.R. DeShon, C.A. Powell (2013), Imaging the New Madrid Seismic Zone using Double-Difference Tomography, J. of Geophysical Research (accepted 2013).

Hansen, S., H.R. DeShon, M. Moore-Driskell, A. Al-Amri (2013), Investigating the P-wave Velocity Structure beneath Harrat Lunayyir, northwestern Saudi Arabia, using Double-Difference Tomography and Earthquakes from the 2009 Seismic Swarm, J. Geophys. Res., (accepted 2013).

Moore-Driskell, M., H.R. DeShon, W. Rabbel, M.M. Thorwart, Y. Dzierma (2013), Integration of arrival time datasets for consistent quality control: A case study of amphibious experiments along the Middle America Trench, Bull. Seismo. Soc. Am., 103 (5), doi:10.1785/0120120274, 2752-2766.

El Hariri, M., S.L. Bilek, E.R. Engdahl, H.R. DeShon, and S.T. Bisrat (2013), Along-strike variability of rupture duration in subduction-zone earthquakes, Journal of Geophysical Research, 118(2), 646-664, doi: 10.1029/2012JB009548.

Van Arsdale, R.B., H.R. DeShon, and M.P. Tuttle (2012), New Madrid Seismic Zone field trip guide, in From the Blue Ridge to the Coastal Plain: Field Excursions in the Southeastern United States, eds. M.C. Eppes and M.J. Bartholomew,  Geological Society of America Field Guide 29, p. 1-14, doi: 10.1130/2012.029(04).

Pesicek, J.D., E.R. Engdahl, C.H. Thurber, H.R. DeShon, and D. Lange (2012), Mantle subducting slab structure in the region of the 2010 M8.8 Maule earthquake (30-40šS), Chile, Geophys. J. Int, doi: 10.1111/j.1365-246X.2012.05624.x.

Bisrat, S., H.R. DeShon, and C.A. Rowe (2012), Swarm Activity Within the New Madrid Seismic Zone Identified Using Waveform Cross- Correlation Techniques, Bull. Seismo. Soc. Am.,
102(3), 1167-1178, doi:10.1795/0120100315

Link to a complete publications listing with PDFs

Curriculum Vitae (link)

Graduate student opportunities

Updated on Sept, 2013