Rich Briggs
My work focuses on the geology and seismotectonics of large earthquakes, with the goal of understanding how, where, and why they happen.
Biography
Research Focus
I characterize active faults for seismic hazard analysis. This requires grappling with structures and processes that control earthquakes. I also work with the USGS National Earthquake Information Center (NEIC) to respond to large earthquakes by conducting rapid field studies and analyzing remote sensing products.
Professional Preparation
BS, Geologic and Environmental Science, Stanford University, 1999
PhD, Geology, Center for Neotectonic Studies, University of Nevada, Reno, 2004
Postdoctoral Scholar, Tectonics Observatory, California Institute of Technology, 2005-2008
Professional Experience
Research Geologist, U.S. Geological Survey, Golden, CO, 2008-present
Geologist, Synergetics Incorporated, Fort Collins, CO (contracted to USGS), 2008
Publications
Published:
Witter, R., Briggs, R., Engelhart, S.E., Gelfenbaum, G., Koehler, R.D., Nelson, A., La Selle, S., Corbett, R., Wallace, K. (2018). Evidence for frequent, large tsunamis spanning locked and creeping parts of the Aleutian megathrust. GSA Bulletin doi: https://doi.org/10.1130/B32031.1
Levandowski, W., Herrmann, R.B., Briggs, R., Boyd, O., and Gold, R. (2018), An updated stress map of the continental United States reveals heterogeneous intraplate stress: Nature Geoscience, v. 11, no. 6, p. 433-437.
DuRoss, Christopher B., Scott E. K. Bennett, Richard W. Briggs, Stephen F. Personius, Ryan D. Gold, Nadine G. Reitman, Adam I. Hiscock, Shannon A. Mahan (2018); Combining Conflicting Bayesian Models to Develop Paleoseismic Records: An Example from the Wasatch Fault Zone, Utah. Bulletin of the Seismological Society of America doi: https://doi.org/10.1785/0120170302
S. E. K. Bennett, C. B. DuRoss, R. D. Gold, R. W. Briggs, S. F. Personius, N. G. Reitman, J. R. Devore, A. I. Hiscock, S. A. Mahan, H. J. Gray, S. Gunnarson, W. J. Stephenson, E. Pettinger, J. K. Odum (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: https://doi.org/10.1785/0120160358
M. P. Moschetti, N. Luco, A. D. Frankel, M. D. Petersen, B. T. Aagaard, A. S. Baltay, M. L. Blanpied, O. S. Boyd, R. W. Briggs, R. D. Gold, R. W. Graves, S. H. Hartzell, S. Rezaeian, W. J. Stephenson, D. J. Wald, R. A. Williams, K. B. Withers (2018); Integrate Urban‐Scale Seismic Hazard Analyses with the U.S. National Seismic Hazard Model. Seismological Research Letters ; 89 (3): 967–970. doi: https://doi.org/10.1785/0220170261
Hayes, G.P., Myers, E.K., Dewey, J.W., Briggs, R.W., Earle, P.S., Benz, H.M., Smoczyk, G.M., Flamme, H.E., Barnhart, W.D., Gold, R.D., and Furlong, K.P. (2017). Tectonic summaries of magnitude 7 and greater earthquakes from 2000 to 2015: U.S. Geological Survey Open-File Report 2016–1192, 148 p., https://doi.org/10.3133/ofr20161192.
Gold, R.D., Briggs, R.W., Crone, A.J., DuRoss, C.B. Refining fault slip rates using multiple displaced terrace risers—An example from the Honey Lake fault, NE California, USA (2017) Earth and Planetary Science Letters, 477, pp. 134-146. DOI: 10.1016/j.epsl.2017.08.021
Hayes, G.P., Briggs, R.W. Introduction to the special issue on the 25 April 2015 Mw 7.8 Gorkha (Nepal) earthquake (2017) Tectonophysics, 714-715, pp. 1-3. DOI: 10.1016/j.tecto.2016.10.033
Levandowski, W., Zellman, M., Briggs, R. Gravitational body forces focus North American intraplate earthquakes (2017) Nature Communications, 8, art. no. 14314. DOI: 10.1038/ncomms14314
Personius, S.F., Briggs, R.W., Zebulon Maharrey, J., Angster, S.J., Mahan, S.A. A paleoseismic transect across the northwestern Basin and Range Province, northwestern Nevada and northeastern California, USA, (2017). Geosphere, 13 (3), pp. 782-810. DOI: 10.1130/GES01380.1
Barnhart, W.D., Murray, J.R., Briggs, R.W., Gomez, F., Miles, C.P.J., Svarc, J., Riquelme, S., Stressler, B.J. Coseismic slip and early afterslip of the 2015 Illapel, Chile, earthquake: Implications for frictional heterogeneity and coastal uplift (2016) Journal of Geophysical Research: Solid Earth, 121 (8), pp. 6172-6191. DOI: 10.1002/2016JB013124
Briggs, R. Earthquakes: Megathrusts and mountain building (2016) Nature Geoscience, 9 (5), pp. 346-348. DOI: 10.1038/ngeo2697
Witter, R.C., Carver, G.A., Briggs, R.W., Gelfenbaum, G., Koehler, R.D., La Selle, S., Bender, A.M., Engelhart, S.E., Hemphill-Haley, E., Hill, T.D. Unusually large tsunamis frequent a currently creeping part of the Aleutian megathrust (2016) Geophysical Research Letters, 43 (1), pp. 76-84. DOI: 10.1002/2015GL066083
Wesnousky, S.G., Briggs, R.W., Caffee, M.W., Ryerson, F.J., Finkel, R.C., Owen, L.A. Terrestrial cosmogenic surface exposure dating of glacial and associated landforms in the Ruby Mountains-East Humboldt Range of central Nevada and along the northeastern flank of the Sierra Nevada (2016) Geomorphology, 268, pp. 72-81. DOI: 10.1016/j.geomorph.2016.04.027
Gagan, M.K., Sosdian, S.M., Scott-Gagan, H., Sieh, K., Hantoro, W.S., Natawidjaja, D.H., Briggs, R.W., Suwargadi, B.W., Rifai, H. Coral 13C/12C records of vertical seafloor displacement during megathrust earthquakes west of Sumatra (2015) Earth and Planetary Science Letters, 432, pp. 461-471. DOI: 10.1016/j.epsl.2015.10.002
Levandowski, W., Boyd, O.S., Briggs, R.W., Gold, R.D. A random-walk algorithm for modeling lithospheric density and the role of body forces in the evolution of the Midcontinent Rift (2015) Geochemistry, Geophysics, Geosystems, 16 (12), pp. 4084-4107. DOI: 10.1002/2015GC005961
Meltzner, A.J., Sieh, K., Chiang, H.-W., Wu, C.-C., Tsang, L.L.H., Shen, C.-C., Hill, E.M., Suwargadi, B.W., Natawidjaja, D.H., Philibosian, B., Briggs, R.W. Time-varying interseismic strain rates and similar seismic ruptures on the Nias-Simeulue patch of the Sunda megathrust (2015) Quaternary Science Reviews, 122, pp. 258-281. DOI: 10.1016/j.quascirev.2015.06.003
Barnhart, W.D., Briggs, R.W., Reitman, N.G., Gold, R.D., Hayes, G.P. Evidence for slip partitioning and bimodal slip behavior on a single fault: Surface slip characteristics of the 2013 Mw7.7 Balochistan, Pakistan earthquake (2015) Earth and Planetary Science Letters, 420, pp. 1-11. DOI: 10.1016/j.epsl.2015.03.027
Mueller, C.S., Briggs, R.W., Wesson, R.L., Petersen, M.D. Updating the USGS seismic hazard maps for Alaska (2015) Quaternary Science Reviews, 113, pp. 39-47. DOI: 10.1016/j.quascirev.2014.10.006
Kelsey, H.M., Witter, R.C., Engelhart, S.E., Briggs, R., Nelson, A., Haeussler, P., Corbett, D. Beach ridges as paleoseismic indicators of abrupt coastal subsidence during subduction zone earthquakes, and implications for Alaska-Aleutian subduction zone paleoseismology, southeast coast of the Kenai Peninsula, Alaska (2015) Quaternary Science Reviews, 113, pp. 147-158. DOI: 10.1016/j.quascirev.2015.01.006
Reitman, N.G., Bennett, S.E.K., Gold, R.D., Briggs, R.W., DuRoss, C.B. High-resolution trench photomosaics from image-based modeling: Workflow and error analysis (2015) Bulletin of the Seismological Society of America, 105 (5), pp. 2354-2366. DOI: 10.1785/0120150041
Gold, R.D., Reitman, N.G., Briggs, R.W., Barnhart, W.D., Hayes, G.P., Wilson, E. On- and off-fault deformation associated with the September 2013 Mw 7.7 Balochistan earthquake: Implications for geologic slip rate measurements (2015) Tectonophysics, 660, pp. 65-78. DOI: 10.1016/j.tecto.2015.08.019
Nelson, A.R., Briggs, R.W., Dura, T., Engelhart, S.E., Gelfenbaum, G., Bradley, L.-A., Forman, S.L., Vane, C.H., Kelley, K.A. Tsunami recurrence in the eastern Alaska-Aleutian arc: A Holocene stratigraphic record from Chirikof Island, Alaska (2015) Geosphere, 11 (4), pp. 1172-1203. DOI: 10.1130/GES01108.1
McNamara, D.E., Hayes, G.P., Benz, H.M., Williams, R.A., McMahon, N.D., Aster, R.C., Holland, A., Sickbert, T., Herrmann, R., Briggs, R., Smoczyk, G., Bergman, E., Earle, P. Reactivated faulting near Cushing, Oklahoma: Increased potential for a triggered earthquake in an area of United States strategic infrastructure (2015) Geophysical Research Letters, 42 (20), pp. 8328-8332. DOI: 10.1002/2015GL064669
Hayes, G.P., Briggs, R.W., Barnhart, W.D., Yeck, W.L., McNamara, D.E., Wald, D.J., Nealy, J.L., Benz, H.M., Gold, R.D., Jaiswal, K.S., Marano, K., Earle, P.S., Hearne, M.G., Smoczyk, G.M., Wald, L.A., Samsonov, S.V. Rapid characterization of the 2015 Mw 7.8 Gorkha, Nepal, Earthquake sequence and its seismotectonic context (2015) Seismological Research Letters, 86 (6), pp. 1557-1567. DOI: 10.1785/0220150145
Barnhart, W.D., Hayes, G.P., Briggs, R.W., Gold, R.D., Bilham, R. Ball-and-socket tectonic rotation during the 2013 Mw7.7 Balochistan earthquake (2014) Earth and Planetary Science Letters, 403, pp. 210-216. DOI: 10.1016/j.epsl.2014.07.001
Witter, R.C., Briggs, R.W., Engelhart, S.E., Gelfenbaum, G., Koehler, R.D., Barnhart, W.D. Little late Holocene strain accumulation and release on the Aleutian megathrust below the Shumagin Islands, Alaska (2014) Geophysical Research Letters, 41 (7), pp. 2359-2367. DOI: 10.1002/2014GL059393
Briggs, R.W., Engelhart, S.E., Nelson, A.R., Dura, T., Kemp, A.C., Haeussler, P.J., Corbett, D.R., Angster, S.J., Bradley, L.-A. Uplift and subsidence reveal a nonpersistent megathrust rupture boundary (Sitkinak Island, Alaska) (2014) Geophysical Research Letters, 41 (7), pp. 2289-2296. DOI: 10.1002/2014GL059380
Gold, R.D., Briggs, R.W., Personius, S.F., Crone, A.J., Mahan, S.A., Angster, S.J. Latest Quaternary paleoseismology and evidence of distributed dextral shear along the Mohawk Valley fault zone, northern Walker Lane, California (2014) Journal of Geophysical Research: Solid Earth, 119 (6), pp. 5014-5032. DOI: 10.1002/2014JB010987
Personius, S.F., Briggs, R.W., Nelson, A.R., Schermer, E.R., Zebulon Maharrey, J., Sherrod, B.L., Spaulding, S.A., Bradley, L.-A. Holocene earthquakes and right-lateral slip on the left-lateral Darrington-Devils Mountain fault zone, northern Puget Sound, Washington (2014) Geosphere, 10 (6), pp. 1482-1500. DOI: 10.1130/GES01067.1
Gold, R.D., Stephenson, W.J., Odum, J.K., Briggs, R.W., Crone, A.J., Angster, S.J. Concealed Quaternary strike-slip fault resolved with airborne lidar and seismic reflection: The Grizzly Valley fault system, northern Walker Lane, California (2013) Journal of Geophysical Research: Solid Earth, 118 (7), pp. 3753-3766. DOI: 10.1002/jgrb.50238
Gold, R., Depolo, C., Briggs, R., Crone, A., Gosse, J. Late quaternary slip-rate variations along the warm springs valley fault system, northern walker lane, California-Nevada border (2013) Bulletin of the Seismological Society of America, 103 (1), pp. 542-558. DOI: 10.1785/0120120020
Briggs, R.W., Wesnousky, S.G., Brune, J.N., Purvance, M.D., Mahan, S.A. Low footwall accelerations and variable surface rupture behavior on the fort sage mountains fault, Northeast California (2013) Bulletin of the Seismological Society of America, 103 (1), pp. 157-168. DOI: 10.1785/0120110313
Kemp, A.C., Engelhart, S.E., Culver, S.J., Nelson, A., Briggs, R.W., Haeussler, P.J. Modern salt-marsh and tidal-flat foraminifera from Sitkinak and Simeonof Islands, Southwestern Alaska (2013) Journal of Foraminiferal Research, 43 (1), pp. 88-98. DOI: 10.2113/gsjfr.43.1.88
Meltzner, A.J., Sieh, K., Chiang, H.-W., Shen, C.-C., Suwargadi, B.W., Natawidjaja, D.H., Philibosian, B., Briggs, R.W. Persistent termini of 2004- and 2005-like ruptures of the Sunda megathrust (2012) Journal of Geophysical Research: Solid Earth, 117 (4), art. no. B04405. DOI: 10.1029/2011JB008888
Wei, S., Fielding, E., Leprince, S., Sladen, A., Avouac, J.-P., Helmberger, D., Hauksson, E., Chu, R., Simons, M., Hudnut, K., Herring, T., Briggs, R. Superficial simplicity of the 2010 El Mayorg-Cucapah earthquake of Baja California in Mexico (2011) Nature Geoscience, 4 (9), pp. 615-618. DOI: 10.1038/ngeo1213
Hayes, G.P., Earle, P.S., Benz, H.M., Wald, D.J., Briggs, R.W. 88 Hours: The U.S. Geological survey national earthquake information center response to the 11 march 2011 Mw 9.0 tohoku earthquake (2011) Seismological Research Letters, 82 (4), pp. 481-493. DOI: 10.1785/gssrl.82.4.481
Prentice, C.S., Mann, P., Crone, A.J., Gold, R.D., Hudnut, K.W., Briggs, R.W., Koehler, R.D., Jean, P. Seismic hazard of the Enriquillog-Plantain Garden fault in Haiti inferred from palaeoseismology (2010) Nature Geoscience, 3 (11), pp. 789-793. DOI: 10.1038/ngeo991
Hayes, G.P., Briggs, R.W., Sladen, A., Fielding, E.J., Prentice, C., Hudnut, K., Mann, P., Taylor, F.W., Crone, A.J., Gold, R., Ito, T., Simons, M. Complex rupture during the 12 January 2010 Haiti earthquake (2010) Nature Geoscience, 3 (11), pp. 800-805. DOI: 10.1038/ngeo977
Hornbach, M.J., Braudy, N., Briggs, R.W., Cormier, M.-H., Davis, M.B., Diebold, J.B., Dieudonne, N., Douilly, R., Frohlich, C., Gulick, S.P.S., Johnson III, H.E., Mann, P., McHugh, C., Ryan-Mishkin, K., Prentice, C.S., Seeber, L., Sorlien, C.C., Steckler, M.S., Symithe, S.J., Taylor, F.W., Templeton, J. High tsunami frequency as a result of combined strike-slip faulting and coastal landslides (2010) Nature Geoscience, 3 (11), pp. 783-788. DOI: 10.1038/ngeo975
Meltzner, A.J., Sieh, K., Chiang, H.-W., Shen, C.-C., Suwargadi, B.W., Natawidjaja, D.H., Philibosian, B.E., Briggs, R.W., Galetzka, J. Coral evidence for earthquake recurrence and an A.D. 1390-1455 cluster at the south end of the 2004 Aceh-Andaman rupture (2010) Journal of Geophysical Research: Solid Earth, 115 (10), art. no. B10402. DOI: 10.1029/2010JB007499
Briggs, R., Hammond, W. Integrating geodetic and geologic data in maps of seismic hazard (2009) Eos, 90 (38), p. 334.
Briggs, R.W., Sieh, K., Amindon, W.H., Galetzka, J., Prayudi, D., Suprihanto, I., Sastra, N., Suwargadi, B., Natawidjaj, D., Farr, T.G. Persistent elastic behavior above a megathrust rupture patch: Nias island, West Sumatra (2008) Journal of Geophysical Research: Solid Earth, 113 (12), art. no. B12406. DOI: 10.1029/2008JB005684
Adams, K.D., Goebel, T., Graf, K., Smith, G.M., Camp, A.J., Briggs, R.W., Rhode, D. Late Pleistocene and Early Holocene lake-level fluctuations in the Lahontan Basin, Nevada: Implications for the distribution of archaeological sites (2008) Geoarchaeology, 23 (5), pp. 608-643. DOI: 10.1002/gea.20237
Turner, R., Koehler, R.D., Briggs, R.W., Wesnousky, S.G. Paleoseismic and slip-rate observations along the Honey Lake fault zone, northeastern California, USA (2008) Bulletin of the Seismological Society of America, 98 (4), pp. 1730-1736. DOI: 10.1785/0120070090
Taylor, F.W., Briggs, R.W., Frohlich, C., Brown, A., Hornbach, M., Papabatu, A.K., Meltzner, A.J., Billy, D. Rupture across arc segment and plate boundaries in the 1 April 2007 Solomons earthquake (2008) Nature Geoscience, 1 (4), pp. 253-257. DOI: 10.1038/ngeo159
Konca, A.O., Hjorleifsdottir, V., Song, T.-R.A., Avouac, J.-P., Helmberger, D.V., Ji, C., Sieh, K., Briggs, R., Meltzner, A. Rupture kinematics of the 2005 Mw 8.6 m Nias-Simeulue earthquake from the joint inversion of seismic and geodetic data (2007) Bulletin of the Seismological Society of America, 97 (1 A SUPPL.), pp. S307-S322. DOI: 10.1785/0120050632
Briggs, R.W., Sieh, K., Meltzner, A.J., Natawidjaja, D., Galetzka, J., Suwargadi, B., Hsu, Y.-J., Simons, M., Hananto, N., Suprihanto, I., Prayudi, D., Avouac, J.-P., Prawirodirdjo, L., Bock, Y. Deformation and slip along the Sunda megathrust in the great 2005 Nias-Simeulue earthquake (2006) Science, 311 (5769), pp. 1897-1901. DOI: 10.1126/science.1122602
Kumar, S., Wesnousky, S.G., Rockwell, T.K., Briggs, R.W., Thakur, V.C., Jayangondaperumal, R. Paleoseismic evidence of great surface rupture earthquakes along the Indian Himalaya (2006) Journal of Geophysical Research: Solid Earth, 111 (3), art. no. B03304, . DOI: 10.1029/2004JB003309
Briggs, R.W., Wesnousky, S.G., Adams, K.D. Late Pleistocene and late Holocene lake highstands in the Pyramid Lake subbasin of Lake Lahontan, Nevada, USA (2005) Quaternary Research, 64 (2), pp. 257-263. DOI: 10.1016/j.yqres.2005.02.011
Briggs, R.W., Wesnousky, S.G. Late Pleistocene and Holocene paleoearthquake activity of the Olinghouse fault zone, Nevada (2005) Bulletin of the Seismological Society of America, 95 (4), pp. 1301-1313. DOI: 10.1785/0120040129
Wesnousky, S.G., Barron, A.D., Briggs, R.W., Caskey, S.J., Kumar, S., Owen, L. Paleoseismic transect across the northern Great Basin (2005) Journal of Geophysical Research: Solid Earth, 110 (5), art. no. B05408, pp. 1-25. DOI: 10.1029/2004JB003283
Briggs, R.W., Wesnousky, S.G. Late Pleistocene fault slip rate, earthquake recurrence, and recency of slip along the Pyramid Lake fault zone, northern Walker Lane, United States (2004) Journal of Geophysical Research: Solid Earth, 109 (8), pp. B08402 1-16. DOI: 10.1029/2003JB002717
Wesnousky, S.G., Seeber, L., Rockwell, T.K., Thakur, V., Briggs, R., Kumar, S., Ragona, D. Eight days in Bhuj: Field report bearing on surface rupture and genesis of the 26 January 2001 earthquake in India (2001) Seismological Research Letters, 72 (5), pp. 514-524.