picture of
                HeatherHeather 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





Education

       
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
(link)


Research Interests
  • Earthquake generation within subduction zones and intraplate settings
  • Induced seismicity
  • 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)
  • GEOL 1313 Earthquakes and Volcanoes
  • GEOL 2308 Earth: Plate Tectonics and the Interior
  • GEOL 3359 Computer Methods in Earth Sciences
  • GEOL 3380 Introduction to Geophysics
  • GEOL 5392 Introduction to Seismology
  • GEOL 6380 Geophysical Inverse Theory
  • Seminar in Seismology-The Seismogenic Zone of Subduction Thrust Fault


Current Research Projects

North Texas Earthquake Studies
      Project Website
  • Understanding North Texas Earthquakes, SMU University Research Council, Collaborators: M. Hornbach, B. Stump, C. Hayward, M.B. Magnani, Z. Lu
  • Imaging faults in Northern Texas and Oklahoma using earthquakes and active source data, USGS Cooperative Agreement, 2016.  PIs: H.R. DeShon and M.B. Magnani
  • TexNet: Earthquake source characterization in the Fort Worth Basin, collaborative with the Center for Integrated Seismicity Studies, Univ. of Texas. PI: H.R. DeShon, Collaborators: C. Frohlich, J. Walter, Alexandros Savvaidis
Subduction Studies
  • Teleseismic Double-Difference Tomography and Real-time Waveform Cross-Correlation

New Madrid 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)  

Past Projects

  • Imaging 3D Seismic Velocity and Attenuation Heterogeneity Along the Seismogenic Zone of Costa Rica and Nicaragua, NSF MARGINS Program, PI: H.R. DeShon (UoM)
  • 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)
  • 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

Frohlich, C., C. Hayward, J. Rosenblit^^, C. Aiken, P. Hennings, A. Savvaidis, C. Lemons, J.I. Walter, H.R. DeShon, Onset and cause of increased seismic activity near Pecos, West Texas, USA from observations at the Lajitas TXAR Seismic Array, submitted for Journal of Geophysical Research, accepted October 2019.


Kwong, K.B.^, H.R. DeShon, J-W. Kim, Z. Lu, Resolving Teleseismic Earthquake Catalog and InSAR Data Discrepancies in Absolute Space to Explore Rupture Complexity Along the Ecuadorian Megathrust Fault, Journal of Geophysical Research: Solid Earth, 124, 6703-6719. doi:10.1029/2018JB016271


Hennings, P.H., J. Lund Snee, J. Osmond, H.R. DeShon, R. Dommisse, E. Horne, C. Lemons, and M.D. Zoback (2019), Injection-Induced Seismicity and Fault Slip Potential in the Fort Worth Basin, Texas, accepted Bulletin of the Seismological Society of America, online June 23 2019. doi:10.1785/0120190017


Quinones, L.^, H.R. DeShon, S. Jeong, P. Ogwari#, O. Sufri#, M.M. Holt^, and K.B. Kwong^ (2019), Tracking Induced Seismicity in the Fort Worth Basin: A Summary of the 2008-2018 North Texas Earthquake Study Catalog, Bulletin of the Seismological Society of America, 190(4), 1203-1216. doi: 10.1785/0120190057.


DeShon, H.R., C.T. Hayward, P.O. Ogwari#, L. Quinones^, O. Sufri#, B. Stump and M.B. Magnani (2018), Summary of the North Texas Earthquake Study Seismic Networks, 2013-2018, Seismological Research Letters, 90(1), 387-394. doi:10.1785/0220180269.


Quinones, L.A.^, H.R. DeShon, M.B. Magnani, and C. Frohlich (2018), Stress orientations in the Fort Worth Basin, Texas, determined from earthquake focal mechanisms, Bulletin of the Seismological Society of America, 108(3A), 1124-1132, doi: 10.1785/0120170337.

 

Link to a complete publications listing with PDFs

Curriculum Vitae (link)



Graduate student opportunities: I am recruiting MS or PhD student to start in Fall 2020.  Interested students are welcome to apply to the geophysics graduate program at SMU.  HRD-October 2019





Updated on October, 2019