Observational and Experimental Seismology
Dr. Keith Koper's Research Group at the University of Utah
2023
Armstrong, A. D., Claerhout, Z., Baker, B., and Koper, K. D. (2023). A Deep-learning Phase Picker with Calibrated Bayesian-derived Uncertainties for Earthquakes in the Yellowstone Volcanic Region, Bulletin of the Seismological Society of America, https://doi.org/10.1785/0120230068.
Farrell, J., Koper, K. D., & Sohn, R. A. (2023). The Relationship Between Wind, Waves, Bathymetry, and Microseisms in Yellowstone Lake, Yellowstone National Park, Journal of Geophysical Research: Solid Earth, https://doi.org/10.1029/2022JB025943.
Pang, G., Koper, K. D., Wu, S. -M., Wang, W., Lasbleis, M., & Euler, G. (2023). Enhanced inner core fine-scale heterogeneity towards Earth’s centre, Nature, https://doi.org/10.1038/s41586-023-06213-2.
2022
Dzubay, A., Moore, J. R., Finnegan, R., Jensen, E. K., Geimer, P. R., & Koper, K. D. (2022). Rotational Components of Normal Modes Measured at a Natural Sandstone Tower (Kane Springs Canyon, Utah, U.S.A.), The Seismic Record, https://doi.org/10.1785/0320220035.
Wu, S.-M., Pang, G., Koper, K. D., & Euler, G. (2022). A search for large-scale variations in the fine-scale structure of Earth's inner core, Journal of Geophysical Research: Solid Earth, https://doi.org/10.1029/2022JB024420.
Pang, G., & Koper, K. D. (2022). Excitation of Earth's inner core rotational oscillation during 2001–2003 captured by earthquake doublets, Earth and Planetary Science Letters, https://doi.org/10.1016/j.epsl.2022.117504.
Holt, J., Pechmann, J. C., & Koper, K. D. (2022). Recalibration of the Local Magnitude (MLML) Scale for Earthquakes in the Yellowstone Volcanic Region, Bulletin of the Seismological Society of America, https://doi.org/10.1785/0120210240.
Kong, Q., Wang, R., Walter, W. R., Pyle, M., Koper, K. D., & Schmandt, B. (2022). Combining Deep Learning with Physics Based Features in Explosion-Earthquake Discrimination, Geophysical Research Letters, https://doi.org/10.1029/2022GL098645.
2021
Hutchings, S. J., & Mooney, W. D. (2021). The Seismicity of Indonesia and Tectonic Implications. Geochemistry, Geophysics, Geosystems, https://doi.org/10.1029/2021GC009812.
Li, J., Chen, M., Koper, K. D., Zhou, T., Xi, Z., Li, S., & Li, G. (2021). A Fast MPI‐Accelerated 1D Triplication Waveform Inversion Package for Constraining Mantle Transition Zone Discontinuities, Seismological Research Letters, https://doi.org/10.1785/0220200475.
Gold, R.D., Bormann, J.M., & Koper, K. D. (2021). Preface to the Focus Section on the 2020 Intermountain West Earthquakes, Seismological Research Letters, https://doi.org/10.1785/0220210001.
Tibi, R., Hammond, P., Brogan, R., Young, C.J., & Koper, K. D. (2021). Deep learning denoising applied to regional distance seismic data in Utah, Bulletin of the Seismological Society of America, https://doi.org/10.1785/0120200292.
Holt, J., Whidden, K. M., Koper, K. D., Pankow, K. L., Mayeda, K., Pechmann, J. C., Edwards, B., Gök, R., & Walter, W. R. (2021). Towards robust and routine determination of Mw for small earthquakes: Application to the 2020 Mw 5.7 Magna, Utah, seismic sequence, Seismological Research Letters, https://doi.org/10.1785/0220200320.
Baker, B., Holt, M. M., Pankow, K. L., Koper, K. D., & Farrell, J. (2021). Monitoring the 2020 Magna, Utah, Earthquake Sequence with Nodal Seismometers and Machine Learning, Seismological Research Letters, https://doi.org/10.1785/0220200316.
Pankow, K. L., Rusho, J., Pechmann, J. C., Hale, J. M., Whidden, K., Sumison, R., Holt, J., Mesimeri, M., Wells, D., & Koper, K. D. (2021). Responding to the 2020 Magna, Utah, Earthquake Sequence during the COVID‐19 Pandemic Shutdown, Seismological Research Letters, https://doi.org/10.1785/0220200265.
Koper, K. D., Holt, M. M., Voyles, J. R., Burlacu, R., Pyle, M. L., Wang, R., & Schmandt, B. (2020). Discrimination of Small Earthquakes and Buried Single‐Fired Chemical Explosions at Local Distances (<150 km) in the Western United States from Comparison of Local Magnitude (ML) and Coda Duration Magnitude (MC), Bulletin of the Seismological Society of America, https://doi.org/10.1785/0120200188.
Johnson, S. W., Chambers, D. J. A., Boltz, M. S., & Koper, K. D. (2021). Application of a Convolutional Neural Network for Seismic Phase Picking in Mining-Induced Seismicity, Geophysical Journal International, https://doi.org/10.1093/gji/ggaa449.
2020
Pang, G., Koper, K. D., Mesimeri, M. M., Pankow, K. L., Baker, B., Farrell, J., Holt, J., Hale, J. M., Roberson, P., Burlacu, R., Pechmann, J. C., Whidden, K., Holt, M. M., Allam, A., & DuRoss, C. (2020). Seismic Analysis of the 2020 Magna, Utah, Earthquake Sequence: Evidence for a Listric Wasatch Fault, Geophysical Research Letters, https://doi.org/10.1029/2020GL089798.
Wu, S., Lin, F., Farrell, J., Shiro, B., Karlstrom, L., Okubo, P., & Koper, K. D. (2020). Spatiotemporal Seismic Structure Variations Associated with the 2018 Kīlauea Eruption Based on Temporary Dense Geophone Arrays, Geophysical Research Letters, https://10.1029/2019GL086668.
Anthony, R. E., Ringler, A. T., Wilson, D. C., Bahavar, M., & Koper, K. D. (2020). How Processing Methodologies Can Distort and Bias Power Spectral Density Estimates of Seismic Background Noise, Seismological Research Letters,
https://doi.org/10.1785/0220190212.
Xu, Y., Koper, K. D., Burlacu, R., Herrmann, R. B., & Li, D.-N. (2020). A New Uniform Moment Tensor Catalog for Yunnan, China, from January 2000 Through December 2014, Seismological Research Letters, https://doi.org/10.1785/0220190242.
Pankow, K. L., Stickney, M., Ben-Horin, J. Y., Litherland, M., Payne, S., Koper, K. D., Bilek, S. L., & Bogolub, K. (2020). Regional Seismic Network Monitoring in the Eastern Intermountain West, Seismological Research Letters, https://doi.org/10.1785/0220190209.
Koper, K. D. (2020). The Importance of Regional Seismic Networks in Monitoring Nuclear Test-Ban Treaties, Seismological Research Letters, https://doi.org/10.1785/0220190160.
Voyles, J., Holt, M. M, Hale, J. M., Koper, K. D., Buralcu, R., & Chambers, D. J. A. (2019). A New Catalog of Explosion Source Parameters in the Utah Region with Application to ML-MC Based Depth Discrimination at Local Distances, Seismological Research Letters, https://doi.org/10.1785/0220190185.
2019
Holt, M. M., Koper, K. D., Yeck, W., D'Amico, S., Li, Z., Hale J. M., & Burlacu, R. (2019). On the Portability of ML-MC as a Depth Discriminant for Small Seismic Events Recorded at Local Distances, Bulletin of the Seismological Society of America, https://doi.org/10.1785/0120190096.
Quinones, L., DeShon, H. R., Jeong, S., Ogwari, P., Sufri, O., Holt, M. M., & Kwong, K. B. (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, https://doi.org/10.1785/0120190057.
Ye, L., Lay, T., Kanamori, H., & Koper, K. D. (2019). Reply to: Comment by Rodrigo Cienfuegos on ‘‘Rapidly Estimated Seismic Source Parameters for the 16 September 2015 Illapel, Chile, Mw 8.3 Earthquake’’, Pure and Applied Geophysics, https://doi.org/10.1007/s00024-019-02214-3.
Pang, G., Koper, K. D., Hale, J. M., Burlacu, R., Farrell, J., & Smith, R. B. (2019). The 2017–2018 Maple Creek Earthquake Sequence in Yellowstone National Park, USA, Geophysical Research Letters, https://doi.org/10.1029/2019GL082376.
2018
Attanayake, J., Thomas, C., Cormier, V. F., Miller, M. S., & Koper, K. D. (2018). Irregular Transition Layer Beneath the Earth's Inner Core Boundary From Observations of Antipodal PKIKP and PKIIKP Waves, Geochemistry, Geophysics, Geosystems, https://doi.org/10.1029/2018GC007562.
Tibi, R., Koper, K. D., Pankow, K. L., & Young, C. J. (2018). Discrimination of Anthropogenic Events and Tectonic Earthquakes in Utah Using a Quadratic Discriminant Function Approach with Local Distance Amplitude Ratios, Bulletin of the Seismological Society of America, https://doi.org/10.1785/0120180024.
Koper, K. D., Pankow, K. L., Pechmann, J. C., Hale, J. M., Burlacu, R., Yeck, W. L., Benz, H. M., Herrmann, R. B., Trugman, D. T., & Shearer, P. M. (2018). Afterslip Enhanced Aftershock Activity During the 2017 Earthquake Sequence Near Sulphur Peak, Idaho, Geophysical Research Letters, https://doi.org/10.1029/2018GL078196.
Pang, G., Koper, K. D., Stickney, M. C., Pechmann, J. C., Burlacu, R., Pankow, K. L., Payne, S., & Benz, H. M. (2018). Seismicity in the Challis, Idaho, Region, January 2014-May 2017: Late Aftershocks of the 1983 MS 7.3 Borah Peak Earthquake, Seismological Research Letters, https://doi.org/10.1785/0220180058.
Tibi, R., Koper, K. D., Pankow, K. L., & Young, C. J. (2018). Depth Discrimination Using Rg-to-Sg Spectral Amplitude Ratios for Seismic Events in Utah Recorded at Local Distances, Bulletin of the Seismological Society of America, https://doi.org/10.1785/0120170257.
2017
Xu, Y., Koper, K. D., & Burlacu, R. (2017). Lakes as a Source of Short-period (0.5-2 s) Microseisms, Journal of Geophysical Research Solid Earth, https://doi.org/10.1002/2017JB014808.
Lay, T., Ye, L., Koper, K. D., & Kanamori, H. (2017). Assessment of Teleseismically-determined Source Parameters for the April 25, 2015 Mw 7.9 Gorkha, Nepal Earthquake and the May 12, 2015 Mw 7.2 Aftershock, Tectonophysics, https://doi.org/10.1016/j.tecto.2016.05.023.
Gal, M., Reading, M. A., Ellingsen, S. P., Koper, K. D., & Burlacu, R. (2017). Full Wavefield Decomposition of High Frequency Secondary Microseisms Reveals Distinct Arrival Azimuths for Rayleigh and Love Waves, Journal of Geophysical Research Solid Earth, https://doi.org/10.1002/2017JB014141.
Zhang, H., Koper, K. D., Pankow, K. L., & Ge, Z. (2017). Imaging the 2016 Mw 7.8 Kaikoura, New Zealand Earthquake with Teleseismic P waves: A Cascading Rupture Across Multiple Faults, Geophysical Research Letters, https://doi.org/10.1002/2017GL073801.
Moore, J. R., Pankow, K. L., Ford, S. R., Koper, K. D., Hale, J. M., Aaron, J., & Larsen, C. F. (2017). Dynamics of the Bingham Canyon Rock Avalanches (Utah, USA) Resolved From Topographic, Seismic, and Infrasound Data, Journal of Geophysical Research Earth Surface, https://doi.org/10.1002/2016JF004036.
Workman, E., Lin, F.-C., & Koper, K. D. (2017). Determination of Rayleigh Wave Ellipticity Across the Earthscope Transportable Array Using Single-station and Array-based Processing of Ambient Seismic Noise, Geophysical Journal International, https://doi.org/10.1093/gji/ggw381.
