Research Interests

• Earthquake source characterization.
• Understanding earthquake sequence development and how it is driven by aseismic processes and earthquake interactions.
• Induced earthquakes and their drivers.

Ph.D., Geophysics, University of Oklahoma 2020

Masters, Geophysics, University of Oklahoma 2017

B.S., Geology, North Carolina State University 2015

8. Pennington, C.N. Chang H., Rubinstein, J.L, Abercrombie R.E., Nakata N., Uchide T., Cochran E. S. (2022), Quantifying the Sensitivity of Microearthquake Slip Inversions to Station Distribution Using the LASSO Nodal Array in Oklahoma. Bulletin of the Seismological Society of America. 2022; 112 (3): 1252–1270. doi: https://doi.org/10.1785/0120210279

7. Pennington, C. N., Uchide T., & Chen, X., (2021), Slip Characteristics of Induced Earthquakes: Insights From the 2015 Mw 4.1 Guthrie, Oklahoma Earthquake. Journal of Geophysical Research: Solid Earth , 127, e2021JB023564. https://doi.org/10.1029/2021JB023564

6. Abercrombie, R. E., Trugman D. T., Shearer P. M., Chen X., Zhang J., Pennington C. N., Hardebeck J. L., Goebel T. H. W., & Ruhl C. J., (2021), Does Earthquake Stress Drop Increase with Depth in the Crust? Journal of Geophysical Research: Solid Earth , 126, e2021JB022314. https://doi.org/10.1029/2021JB022314

5. Pennington, C. N., Chen, X., Abercrombie, R. E., & Wu, Q. (2021), Cross validation of stress drop estimates and interpretations for the 2011 Prague, OK, earthquake sequence using multiple methods. Journal of Geophysical Research: Solid Earth, 126, e2020JB020888. https://doi.org/10.1029/2020JB020888

4. Chen, X., Pennington, C. N., Ng, R., Nakata, N., & Zhang, J. (2019), Source parameter analysis of microseismicity during hydraulic fracture: Pinning stress distributions within fracture zone. In SEG Technical Program Expanded Abstracts 2019 (pp. 2128–2132). Society of Exploration Geophysicists. https://doi.org/10.1190/segam2019-3216218.1

3. Pennington, C. N., (2017), Investigation of Faulting Processes of Two M5 Earthquake Sequences in Oklahoma, The University of Oklahoma, Masters Thesis.

2. Pennington, C. N., & Chen, X. (2017), Coulomb Stress Interactions during the M w 5.8 Pawnee Sequence. Seismological Research Letters, 88(4), 1024–1031. https://doi.org/10.1785/0220170011

1. Chen, X., Nakata, N., Pennington, C. N., Haffener, J., Chang, J. C., He, X., et al., (2017), The Pawnee earthquake as a result of the interplay among injection, faults and foreshocks. Scientific Reports, 7(1), 4945. https://doi.org/10.1038/s41598-017-04992-z