delph - Department of Earth, Atmospheric, and Planetary Sciences - Purdue University
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Dr. Jonathan Delph

Jonathan Delph

Assistant Professor - Starting Fall 2020
Curriculum Vitae / Google Scholar

Associated Website: Geology & Geophysics, Personal Website


  • 2016  Ph.D., Geosciences, University of Arizona
  • 2012  B.S., Earth and Space Exploration, Arizona State University

Research Interests

The crux of my research relies on creating high-resolution images of crustal and uppermost mantle structure; a challenging area considering the largest variations in seismic characteristics occur at these depths. Improving and modifying seismic imaging techniques is necessary to advance our understanding of how tectonic events are manifest in the seismic characteristics of a region. In my research, I have developed new approaches for the creation of 3D shear-wave velocity models that improve the lateral resolution of geologic structures at depth through the joint inversion of surface wave dispersion and adaptively binned receiver function data. I am also interested in applying seismic interferometry techniques to understand how tectonic events influence spatial and/or temporal variations in the seismic properties of the crust.


  1. Delph JR, Levander A, & Niu F (2019) “Constraining crustal properties using receiver functions and the autocorrelation of earthquake-generated body waves” Journal of Geophysical Research, doi:10.1029/2019JB017929
  2. Reid MR, Delph JR, Cosca MA, Schleiffarth WK, & Kuscu, GG (2019) “Melt equilibration depths as sensors of lithospheric thickness during Eurasia-Arabia collision and the uplift of the Anatolian Plateau” Geology, doi:10.1130/G46420.1
  3. Delph, J.R., Levander, A., Niu F. (2018) "Fluid controls on the heterogeneous seismic characteristics of the Cascadia margin", Geophysical Research Letters, 45, 11021-11029, doi:10.1029/2018GL079518
  4. Portner, D.E., Delph, J.R., Biryol, C.B., Beck, S.L., Zandt, G., Ozacar, A.A., Sandvol, E., & Turkelli, N. (2018) "Subduction termination through progressive slab deformation across eastern Mediterranean subduction zones from updated P-wave tomography beneath Anatolia", Geosphere, 14, 907-925, doi:10.1130/GES01617.1.
  5. Abgarmi, B., Delph, J.R., Ozacar, A.A., Beck, S.L., Zandt, G., Sandvol, E., Turkelli, N., & Biryol, C.B. (2017) "The nature of central Anatolian crust and uppermost mantle from teleseismic receiver functions; the role of slab dynamics on rapid uplift", Geosphere, 13, doi:10.1130/GES01509.1.
  6. Delph, J.R., Abgarmi, B., Ward, K.M., Beck, S.L., Ozacar, A.A., Zandt, G., Sandvol, E., Turkelli, N., & Kalafat, D. (2017) "The effects of subduction termination on the continental lithosphere: Linking volcanism, deformation, surface uplif, and slab tearing in Central Anatolia", Geosphere, 13, doi:10.1130/GES01478.1.
  7. Ward, K.M., Delph, J.R., Zandt, G., Beck, S.L., & Ducea, M.N. (2017) "Magmatic evolution of a Cordilleran flare-up and its role in the creation of silicic crust", Scientific Reports, doi:10.1038/SREP-17-12272-T.
  8. Reid, M.R., Schlieffarth, W.K., Cosca, M., Delph, J.R., Blichert-Toft, J., & Cooper, K.M. (2017) "Shallow melting of MORB-like mantle under hot continental lithosphere, Central Anatolia", Geochem. Geophys. Geosyst., 18, 1866-1888, doi:10.1002/2016GC006772.
  9. Delph, J.R., Ward, K.M., Zandt, G., Ducea, M.N., & Beck, S.L. (2017) "Imaging a magma plumbing system from MASH zone to magma reservoir", Earth planet. Sci. Lett., 457, 313-324, doi:10.1016/j.epsl.10.008.
  10. Han L, Hole JA, Stock JM, Fuis GS, Williams CF, Delph JR, Davenport KK, & Livers AJ (2016) “Seismic imaging of the metamorphism of young sediment into new crystalline crust in the actively rifting Imperial Valley, California”, Geochem. Geophys. Geosyst., 17, 4566-4584, doi:10.1002/2016GC006610
  11. Delph, J.R., Zandt, G., & Beck, S.L. (2015) "A new approach to obtaining a 3D shear wave velocity model of the crust and upper mantle: An application to eastern Turkey", Tectonophysics, 665C, 92-100, doi:10.1016/j.tecto.2015.09.031.
  12. Delph, J.R., Biryol, C.B., Beck, S.L., Zandt, G., & Ward, K.M. (2015) "Shear wave velocity structure of the Anatolian Plate: Anomalously slow crust in southwestern Turkey", Geophys. J. Int. 202, 261-276, doi:10.1093/gji/ggv141.
  13. Delph, J.R. & Porter, R.C. (2015) "Crustal structure beneath Southern Africa: Insight into how Tectonic events affect the Mohorovicic Discontinuity", Geophys. J. Int. 200, 254-264, doi:10.1093/gji/ggu376.

Other Published Correspondences

  1. Delph JR, Singer BS, & Dufek J (2018) “Geoscientists collaborate to understand silicic magma systems” Eos, 99,

  2. Ward KM, Delph JR, & Beck SL, (2016) “Extending recent seismic imaging successes to South America” Eos, 97, doi:10.1029/2016EO051271 

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