Christopher B DuRoss

Biography

As an earthquake geologist, I investigate geologic evidence of active faulting, with an emphasis on normal-faulting regions of the Western U.S. My research is focused on field-based mapping and paleoseismic trenching investigations, Quaternary geochronology and geomorphology, syntheses of complex paleoseismic datasets, the characterization of active faults for probabilistic seismic-hazard analysis, and post-earthquake investigations to collect ephemeral field data. The goal of this research is to quantify seismic hazard in the U.S. and reduce earthquake risk.

 

Primary research interests:

  • Paleoseismology and earthquake geology
  • Quaternary geochronology and Bayesian modeling
  • Tectonic geomorphology and geologic mapping
  • Remote sensing and image-based (structure-from-motion) modeling
  • Earthquake probability and hazard modeling

 

Areas of active research: 

  • Teton fault (Wyoming): Developing new paleoseismic (fault-trench) data to refine estimates of earthquake timing, displacement, rupture length, and magnitude.
    Wasatch fault zone (Utah): Synthesizing existing paleoseismic data to develop objective contstraints on prehistoric earthquake rupture length.
  • Lost River fault zone (Idaho): Comparing prehistoric and historic (M6.9 Borah Peak earthquake) rupture timing, displacement, and geometry.
  • 2019 Ridgecrest earthquake sequence (California): Evaluating along-strike displacement profile for the M7.1 rupture.

 

Professional Appointments

2014 – present         Research Geologist, U.S. Geological Survey, Golden, Colorado             

2004 – 2014             Senior Geologist, Utah Geological Survey, Salt Lake City, Utah     

   

Publications

DuRoss, C. B., R. D. Gold, T. E. Dawson, K. M. Scharer, K. J. Kendrick, S. O. Akciz, S. J. Angster, J. Bachhuber, S. Bacon, S. E. K. Bennett, et al. (2020). Surface Displacement Distributions for the July 2019 Ridgecrest, California, Earthquake Ruptures, Bull. Seismol. Soc. Am. XX, 1–19, https://doi.org/10.1785/0120200058.

DuRoss, C. B., R. D. Gold, T. E. Dawson, K. M. Scharer, K. J. Kendrick, S. O. Akciz, S. J. Angster, J. Bachhuber, S. Bacon, S. E. K. Bennett, et al., 2020, Surface Displacement Observations of the 2019 Ridgecrest, California Earthquake Sequence: U.S. Geological Survey data release, https://doi.org/10.5066/P986ILE2.

Valentini, A., DuRoss, C.B., Field, E.H., Gold, R.D., Briggs, R.W., Visini, F., and  Pace, B., 2019, Relaxing segmentation on the Wasatch fault zone: Impact on seismic hazard: Bulletin of the Seismological Society of America. https://doi.org/10.1785/0120190088

Zellman, M., DuRoss, C.B., Thackray, G.R., Personius, S., Reitman, N., Mahan, S., and Brossy, C., 2019, Holocene rupture history of the central Teton fault at Leigh Lake; Grand Teton National Park, Wyoming: Bulletin of the Seismological Society of America. https://doi.org/10.1785/0120190129

DuRoss, C.B., Gold, R.D., Briggs, R.W., Delano, J.E., Ostenaa, D.A., Zellman, M., Cholewinski, N., Wittke, S., and Mahan, S.A., 2019, Holocene earthquake history and slip rate of the southern Teton fault, Wyoming, USA: Geological Society of America Bulletin. https://doi.org/10.1130/B35363.1

DuRoss, C.B., Bunds, M.P., Gold, R.D., Briggs, R.W., Reitman, N.G., Personius, S.F., and Toké, N.A., 2019, Variable normal-fault rupture behavior, northern Lost River fault zone, Idaho, USA: Geosphere. https://doi.org/10.1130/GES02096.1

Verdecchia, A., Carena, S., Pace, B., and DuRoss, C.B., 2019, The effect of stress changes on time-dependent earthquake probabilities for the central Wasatch Fault Zone, Utah, USA: Geophysical Journal International. https://doi.org/10.1093/gji/ggz336.

Zellman, M., DuRoss, C.B., and Thackray, G.D., 2019, The Teton fault, Teton County, Wyoming: Wyoming Geological Survey Wyoming Geological Survey Open-File Report 2019-01 Open-File Report 2019-01. https://www.wsgs.wyo.gov/products/wsgs-2019-ofr-01.pdf

Gold, R. D., DuRoss, C. B., Delano, J. E., Jibson, R. W., Briggs, R. W., Mahan, S. A.,et al., 2019, Four major Holocene earthquakes on the Reelfoot fault recorded by sackungen in the New Madrid seismic zone, USA: Journal of Geophysical Research Solid Earth, 124, 3105–3126. https://doi.org/10.1029/2018JB016806.

DuRoss, C.B., Bennett, S.E.K., Briggs, R.W., Personius, S.F., Gold, R.D., Reitman, N.G., Hiscock, A.I., and Mahan, S.A., 2018, Combining conflicting Bayesian models to develop paleoseismic records: An example from the Wasatch fault zone, Utah: Bulletin of the Seismological Society of America, 108, 3180–3201, doi:10.1785/0120170302.

Bennett, S.E.K., DuRoss, C.B., Gold, R.D., Briggs R.W., Personius, S.F., Reitman, N.G., DeVore, J.R., Hiscock, A.I., Mahan, S. A., Gray H.J., et al., 2018, Paleoseismic results from the Alpine site, Wasatch fault zone: Timing and displacement data for six Holocene earthquakes at the Salt Lake City-Provo segment boundary: Bulletin of the Seismological Society of America, doi: 10.1785/0120160358.

Bruno, P.P.G., DuRoss, C.B., and Kokkalas, S., 2017, High-resolution seismic profiling reveals faulting associated with the 1934 Ms 6.6 Hansel Valley earthquake (Utah, USA): GSA Bulletin (2017), 129 (9-10): 1227-1240. https://doi.org/10.1130/B31516.1.

Gold, R.D., Briggs, R.W., Crone, A.J., and DuRoss, C.B., 2017, Refining fault slip rates using multiple displaced terrace risers—An example from the Honey Lake fault, NE California, USA: Earth and Planetary Science Letters 477, 134–146. https://doi.org/10.1016/j.epsl.2017.08.021.

DuRoss, C.B., Personius, S.F., Crone, A.J., Olig, S.S., Hylland, M.D., Lund, W.R., and Schwartz, D.P., 2016, Fault segmentation: New concepts from the Wasatch Fault Zone, Utah, USA: Central Wasatch Fault Zone Segmentation: Journal of Geophysical Research: Solid Earth, 121, 1131–1157, doi:10.1002/2015JB012519.

Working Group on Utah Earthquake Probabilities (Ed.), 2016, Earthquake probabilities for the Wasatch Front region in Utah, Idaho, and Wyoming: Salt Lake City, Utah, Utah Geological Survey, Miscellaneous publication / Utah Geological Survey 16–3, 1 p.

Reitman, N.G., Bennett, S.E.K., Gold, R.D., Briggs, R.W., and DuRoss, C.B., 2015, High‐Resolution Trench Photomosaics from Image‐Based Modeling: Workflow and Error Analysis: Bulletin of the Seismological Society of America, 105, 2354–2366, doi:10.1785/0120150041.

DuRoss, C.B., and Hylland, M.D., 2015, Synchronous Ruptures Along a Major Graben-Forming Fault System––Wasatch and West Valley Fault Zones, Utah, USA: Bulletin of the Seismological Society of America, 105(1), 14-37, doi: 10.1785/0120140064.

DuRoss, C.B., Hylland, M.D., McDonald, G.N., Crone, A.J., Personius, S.F., Gold, R.D., and Mahan, S.A., 2014, Holocene and latest Pleistocene paleoseismology of the Salt Lake City segment of the Wasatch fault zone, Utah, at the Penrose Drive trench site, in DuRoss, C.B. and Hylland, M.D., Evaluating surface faulting chronologies of graben-bounding faults in Salt Lake Valley, Utah––new paleoseismic data from the Salt Lake City segment of the Wasatch fault zone and the West Valley fault zone––Paleoseismology of Utah, Volume 24: Utah Geological Survey Special Study 149, p. 1–39, 6 appendices, 1 plate.

Hylland, M. D., DuRoss, C.B., McDonald, G.N., Olig, S.S., Oviatt, C.G., Mahan, S.A., Crone, A.J., and Personius, S.F., 2014, Late Quaternary paleoseismology of the West Valley fault zone, Utah: Insights from the Baileys Lake trench site, in DuRoss, C.B. and Hylland, M.D., Evaluating surface faulting chronologies of graben-bounding faults in Salt Lake Valley, Utah––new paleoseismic data from the Salt Lake City segment of the Wasatch fault zone and the West Valley fault zone––Paleoseismology of Utah, Volume 24: Utah Geological Survey Special Study 149, p. 41–76, 8 appendices, 1 plate.

Crone, A.J., Personius, S.F., DuRoss, C.B., Machette, M.N., and Mahan, S.A., 2014, History of late Holocene earthquakes at the Willow Creek site on the Nephi segment, Wasatch fault zone, Utah––Paleoseismology of Utah Volume 25: Utah Geological Survey Special Study 151, 43 p.

DuRoss, C.B., Personius, S.F., Crone, A.J., McDonald, G.N., and Briggs, R., 2012, Late Holocene earthquake history of the Brigham City segment of the Wasatch fault zone at the Hansen Canyon, Kotter Canyon, and Pearsons Canyon trench sites, Box Elder County, Utah––Paleoseismology of Utah, Volume 22: Utah Geological Survey Special Study 142, 28 p., 3 plates.

Personius, S.F., DuRoss, C.B., and Crone, A.J., 2012, Holocene behavior of the Brigham City segment––implications for forecasting the next large‐magnitude earthquake on the Wasatch fault zone, Utah: Bulletin of the Seismological Society of America, v. 102, no. 6, p. 2265–2281.

DuRoss, C.B., Personius, S.F., Crone, A.J., Olig, S.S., and Lund, W.R., 2011, Integration of paleoseismic data from multiple sites to develop an objective earthquake chronology––application to the Weber segment of the Wasatch fault zone: Bulletin of the Seismological Society of America, v. 101, no. 6, p. 2765–2781.

DuRoss, C.B., Personius, S.F., Crone, A.J., McDonald, G.N., and Lidke, D.J., 2009, Paleoseismic investigation of the northern Weber segment of the Wasatch fault zone at the Rice Creek trench site, North Ogden, Utah––Paleoseismology of Utah, Volume 18: Utah Geological Survey Special Study 130, 37 p., 2 plates.

DuRoss, C.B., 2008, Holocene vertical displacement on the central segments of the Wasatch fault zone, Utah: Bulletin of the Seismological Society of America, v. 98-6, 17 p.

DuRoss, C.B., McDonald, G.N., and Lund, W.R., 2008, Paleoseismic investigation of the northern strand of the Nephi segment of the Wasatch fault zone at Santaquin, Utah––Paleoseismology of Utah, Volume 17: Utah Geological Survey Special Study 124, 33 p., 1 plate.

DuRoss, C.B., and Bruhn, R.L., 2005, Active tectonics of the Nephi segment, Wasatch fault zone, Utah, in Lund, W.R., editor, Western States Seismic Policy Council Proceedings Volume of the Basin and Range Province Seismic-Hazards Summit II: Utah Geological Survey Miscellaneous Publication 05-2.