USGS Professional Pages

## Richard Iverson## HydrologistContact Info## Short Biography Position: Senior Research Hydrologist, USGS Cascades Volcano Observatory Adjunct Professor, University of Washington and Portland State University
Education: Stanford University, Ph.D., 1984, Applied Earth Sciences Stanford University, M.S., 1981, Hydrology Stanford University, M.S., 1980, Applied Earth Sciences Iowa State University, B.S., 1977, Geology major, Mathematics and Physics minors
Recognition: Fellow, American Geophysical Union (AGU) and Geological Society of America (GSA) E.B. Burwell Award, GSA, 1991 Kirk Bryan Award, GSA, 2001 Richard H. Jahns Distinguished Lecturer, GSA, 2005 Langbein Lecturer, AGU, 2006 ## PublicationsIverson, R.M., and George, D.L., 2016, Modelling landslide liquefaction, mobility bifurcation and the dynamics of the 2014 Oso disaster.66, 175–187, doi: 10.1680/jgeot.15.LM.004. [Download File]Geotechnique, Iverson, R.M., George, D.L., Allstadt, K., Reid, M.E., Collins, B.D., Vallance, J.W., Schilling, S.P., Godt, J.W., Cannon, C.M., Magirl, C.S., Baum, R.L., Coe, J.A., Schulz, W.H., and Bower, J.B., 2015, Landslide mobility and hazards: implications of the 2014 Oso disaster, Walder, J.S., Iverson, R.M., Godt, J.W., Logan, M., Solovitz, S., 2015, Controls on the breach geometry and flood hydrograph during overtopping of non-cohesive earthen dams. Iverson, R.M., and Ouyang, C., 2015, Entrainment of bed material by Earth-surface mass flows: review and reformulation of depth-integrated theory, Iverson, R.M., 2015, Scaling and design of landslide and debris-flow experiments, Vallance, J.W., and Iverson, R.M., 2015, Lahars and their deposits, in Sigurdsson, H., Houghton, B., Rymer, H., Stix, J., McNutt, S. (Eds.), Elsevier, Amsterdam, 649–664. [Download File] George, D.L., and Iverson, R.M., 2014, A depth-averaged debris-flow model that includes the effects of evolving dilatancy. II. numerical predictions and experimental tests, Iverson, R.M., 2014, Debris flows: behaviour and hazard assessment, Iverson, R.M., and George, D.L., 2014, A depth-averaged debris-flow model that includes the effects of evolving dilatancy. I. physical basis, Iverson, R.M., 2013, Mechanics of debris flows and rock avalanches, in Iverson, R.M., 2013, Discussion of “Numerical study on entrainment of bed material into rapid landslides” by M. Pirulli and M. Pastor, Johnson, C.G., Kokelaar, B.P., Iverson, R.M., Logan, M., LaHusen, R.G., and Gray, J.M.N.T., 2012, Grain-size segregation and levee formation in geophysical mass flows, Iverson, R.M., 2012, Elementary theory of bed-sediment entrainment by debris flows and avalanches, George, D.L., and Iverson, R.M., 2011, A two-phase debris-flow model that includes coupled evolution of volume fractions, granular dilatancy and pore-fluid pressure. in Iverson. R.M., Reid, M.E., Logan, M., LaHusen, R.G., Godt, J.W., Griswold, J.G., 2011, Positive feedback and momentum growth during debris-flow entrainment of wet bed sediment. Reid, M.E., Iverson. R.M., Logan, M., LaHusen, R.G., Godt, J.W., and Griswold, J.G., 2011, Entrainment of bed sediment by debris flows: results from large-scale experiments Iverson, N.R., Mann, JE., and Iverson, R.M., 2010, Effects of soil aggregates on debris-flow mobilization: results from ring-shear experiments. Iverson, R.M., Logan, M., LaHusen, R.G., and Berti, M., 2010, The perfect debris flow? aggregated results from 28 large-scale experiments. Reid, M.E., Keith, T.E.C., Kayen, R.E., Iverson, N.R., Iverson , R.M., and Brien, D.L., 2010, Volcano collapse promoted by progressive strength reduction: new data from Mount St. Helens. Vallance, J.W., Gardner, C.A., Scott, W.E. Iverson, R.M., and Pierson, T.C., 2010, Mount St. Helens - A 30-year legacy of volcanism. Iverson, R.M., and LeVeque, R.J., 2009, Modeling Hazardous Mass Flows (meeting report), Iverson, R.M., 2009, Elements of an improved model of debris-flow motion, in , M. Nakagawa and S. Luding, eds., American Institute of Physics, Melville, New York, p. 9-16. [Download File]Proceedings of the Sixth International Conference on Micro-mechanics of Granular MediaAncey, C., Iverson, R.M., Rentschler, M., and Denlinger, R.P., 2008, An exact solution for ideal dam-break floods on steep slopes. Griswold, J.P., and Iverson, R.M., 2008, Mobility and statistics and automated hazard mapping for debris flows and rock avalanches. Iverson, R.M., 2008, Book review of v. 116, p.103.Journal of Geology,Iverson, R.M., 2008, Dynamics of seismogenic volcanic extrusion resisted by a solid surface plug, Mount St. Helens, 2004-2005. chapter 21 in Sherrod, D.R., Scott, W.E., and Stauffer, P.H., eds., Moore, P.L., Iverson, N.R., and Iverson, R.M., 2008, Frictional properties of the Mount St. Helens gouge. chapter 20 in Sherrod, D.R., Scott, W.E., and Stauffer, P.H., eds., Reid, M.E., Iverson, R.M, Iverson, N.R., LaHusen, R.G., Brien, D.L., and Logan, M., 2008, Deciphering landslide behavior using large-scale flume experiments, in Schaeffer, D.G., and Iverson, R.M., 2008, Steady and intermittent slipping in a model of landslide motion regulated by pore-pressure feedback. Logan, M., and Iverson, R.M., 2007, Video documentation of experiments at the USGS debris-flow flume, 1992-2006. Iverson, R.M., 2006, Forecasting runout of rock and debris avalanches, in Iverson, R.M., Dzurisn, D., Gardner, C.A., Gerlach, T.M., LaHusen, R.G., Lisowski, M., Major, J.J., Malone,S.D., Messerich, J.A., Moran, S.C., Pallister, J.S., Qamar., A.I., Schilling, S.P., and Vallance, J.W., 2006, Dynamics of seismogenic volcanic extrusion at Mount St. Helens in 2004-05. Iverson, R.M., 2005, Debris-flow mechanics, in Iverson, R.M., 2005, Regulation of landslide motion by dilatancy and pore pressure feedback, Iverson, R.M., 2004, Debris flow, in Iverson, R.M., 2004, Mechanics of geological materials, in Denlinger, R.P., and Iverson, R.M., 2004, Granular avalanches across irregular three-dimensional terrain: 1. theory and computation, Iverson, R.M., Logan, M., and Denlinger, R.P., 2004, Granular avalanches across irregular three-dimensional terrain: 2. experimental tests, Iverson, R.M., 2004, Comment on “Piezometric response in shallow bedrock at CB1: implications for runoff generation and landsliding” by D.R. Montgomery, W.E. Dietrich, and J.T. Heffner, Iverson, R.M., 2003, Gravity-driven mass flows, in Wilcock, P.R., and Iverson, R.M., eds., 2003, Wilcock, P.R., and Iverson, R.M., 2003, Prediction in geomorphology, in Wilcock, P.R., Schmidt, J.C., Wolman, G.M., Dietrich, W.E., DeWitt, D., Doyle, M.W., Grant, G.E., Iverson, R.M., Montgomery, D.R., Pierson, T.C., Schilling, S.P., and Wilson, R.C., 2003, When models meet managers: examples from geomorphology, in Iverson, R.M., 2003, The debris-flow rheology myth, , v. 1, D. Rickenmann and C.L. Chen, eds., Millpress, Rotterdam, 303-314. [Download File]Debris-flow Hazards Mitigation: Mechanics, Prediction, and AssessmentSavage, S.B., and Iverson, R.M., 2003, Surge dynamics coupled to pore-pressure evolution in debris flows, in Iverson, R.M., 2003, How should mathematical models of geomorphic processes be judged?, in Denlinger, R.P., and Iverson, R.M., 2001, Flow of variably fluidized granular masses across three-dimensional terrain: 2. Numerical predictions and experimental tests, Iverson, R.M., and Denlinger, R.P., 2001, Flow of variably fluidized granular masses across three-dimensional terrain: 1. Coulomb mixture theory, Iverson, R.M., and Denlinger, R.P., 2001, Mechanics of debris flows and debris-laden flash floods, Iverson, N.R., and Iverson, R.M., 2001, Distributed shear of subglacial till due to Coulomb slip, Iverson, R.M. and Vallance, J.W., 2001, New views of granular mass flows, Iverson, R.M., Denlinger, R.P., LaHusen, R.G., and Logan, M., 2000, Two-phase debris flow across 3-D terrain: Model predictions and experimental tests, in Iverson, R.M., 2000, Landslide triggering by rain infiltration, Iverson, R.M., Reid, M.E., Iverson, N.R., LaHusen, R.G., Logan, M., Mann, J.E., Brien, D.L., 2000, Acute sensitivity of landslide rates to initial soil porosity, DeNatale, J.S., Iverson, R.M., Major, J.J., LaHusen, R.G., Fiegel, G.L., and Duffy, J.D., 1999, Experimental testing of flexible barriers for containment of debris flows, Scott, W.E., Iverson, R.M., Schilling, S.P., and Fisher, B.J., 1999, Volcano hazards in the Three Sisters region, Oregon, Major, J.J., and Iverson, R.M., 1999, Debris-flow deposition — effects of pore-fluid pressure and friction concentrated at flow margins, Iverson, R. M. Schilling, S.P., and Vallance, J.W., 1998, Objective delineation of lahar- inundation hazard zones, DeNatale, J.S., Fiegel, G.L., Iverson, R.M., Major, J.J., LaHusen, R.G., Duffy, J.D., and Fisher, G.D., 1997, Response of flexible wire rope barriers to debris-flow loading, Iverson, R.M., 1997, Discussion of “Slope instability from groundwater seepage,” Iverson, R.M., 1997, Hydraulic modeling of unsteady debris-flow surges with solid-fluid interactions, Major, J.J., and Iverson, R.M., 1997, Experimental analysis of debris-flow deposition — process and effects of pore-fluid pressure, Major, J.J., Iverson, R.M., McTigue, D.F., Macias, S., and Fiedorowicz, B.K., 1997, Geotechnical properties of debris-flow sediments and slurries, Reid, M.E., LaHusen, R.G., and Iverson, R.M., 1997, Debris-flow initiation experiments with diverse hydrologic triggers, Schilling, S.P., and Iverson, R.M., 1997, Automated, reproducible delineation of zones at risk from inundation by large volcanic debris flows, Iverson, R.M., 1997, The physics of debris flows: Iverson, R.M., Reid, M.E., and LaHusen, R.G., 1997, Debris-flow mobilization from landslides: Scott, W.E., Iverson, R.M., Vallance, J.W., and Hildreth, W., 1995, Volcano hazards in the Mount Adams Region, Washington: Wong, W.W.H., Ho, C.L., Iverson, R.M., and Hovind, C.L., 1995, Evaluation of viscoplastic slope movement based on triaxial tests: in Clay and Shale Slope Instability, W.C. Haneberg and S.A. Anderson eds., Iverson, R.M., 1995, Can magma-injection and groundwater forces cause massive landslides on Hawaiian volcanoes?: Iverson, R.M., 1993, Differential equations governing slip-induced pore-pressure fluctuations in a water-saturated granular medium: Iverson, R.M., and R.G. LaHusen, 1993, Friction in debris flows: Inferences from large-scale flume experiments: , v. 2, p. 1604-1609. [Download File]Iverson, R.M., Costa, J.E., and R.G. LaHusen, 1992, Debris-flow flume at H.J. Andrews Experimental Forest, Oregon, Pierson, T.C., Iverson, R.M., and Ellen, S.D, 1992, Spatial and temporal distribution of shallow landsliding during intense rainfall, southeastern Oahu, Hawaii: Iverson, R.M., 1992, Sensitivity of stability analyses to groundwater data: Iverson, R.M., and Reid, M.E., 1992, Gravity-driven groundwater flow and slope failure potential: 1. Elastic effective-stress model: Reid, M.E., and Iverson, R.M., 1992, Gravity-driven groundwater flow and slope failure potential: 2. Effects of slope morphology, material properties, and hydraulic heterogeneity: Ellen, S.D., Iverson, R.M., and Pierson, T.C., 1991, Map showing the distribution of debris flows during the New Year's Eve storm of 1987-1988 in southeastern Oahu, Hawaii: Denlinger, R.P., and Iverson, R.M., 1990, Limiting equilibrium and liquefaction potential in infinite submarine slopes: Iverson, R.M., 1990, Groundwater flow fields in infinite slopes: Iverson, R.M., 1990, Lava domes modeled as brittle shells that enclose pressurized magma, with application to Mount St. Helens: Iverson, R.M., and LaHusen, R.G., 1989, Dynamic pore‑pressure fluctuations in rapidly shearing granular materials: Major, J.J., and Iverson, R.M., 1988, Discussion of "Hydroseismicity ‑‑ a hypothesis for the role of water in the generation of intraplate seismicity" by J.K. Costain, G.A. Bollinger, and J.A. Speer: Iverson, R.M., 1987, book review of , v. 15, no. 5, p. 477.GeologyIverson, R.M., and Denlinger, R.P., 1987, The physics of debris flows ‑‑ a conceptual assessment: Iverson, R.M., and Major, J.J., 1987, Rainfall, groundwater flow, and seasonal movement at Minor Creek landslide, northwestern California: Physical interpretation of empirical relations: Iverson, R.M., 1986, Unsteady, nonuniform landslide motion: 1. theoretical dynamics and the steady datum state: Iverson, R.M., 1986, Unsteady, nonuniform landslide motion: 2. linearized theory and the kinematics of transient response: Iverson, R.M., 1986, Dynamics of slow landslides: a theory for time‑dependent behavior: Iverson, R.M., 1986, book review of , v. 94, no. 3, p. 446‑447.Journal of GeologyIverson, R.M., and Martinson, H.A., editors, 1986, Iverson, R.M., and Major, J.J., 1986, Groundwater seepage vectors and the potential for hillslope failure and debris‑flow mobilization: Iverson, R.M., 1985, Minor Creek landslide: Iverson, R.M., 1985, A constitutive equation for mass‑movement behavior: Elvidge, C.D., and Iverson, R.M., 1983, Regeneration of desert pavement and desert varnish: Hinckley, B.S., Iverson, R.M., and Hallet, B., 1983, Accelerated water erosion in ORV‑use areas: Iverson, R.M., 1983, Discussion of "A model for creeping flow in landslides" by W.Z. Savage and A.F. Chleborad: Iverson, R.M., Hinckley, B.S., Webb, R.H., and Hallet, B., 1981, Physical effects of vehicular disturbances on arid landscapes: Iverson, R.M., 1980, Processes of accelerated pluvial erosion on desert hillslopes modified by vehicular traffic:
| ## Debris flows, Landslides, GeomechanicsMy research focuses on the mechanics of geological processes, particularly debris flows and landslides, but also volcanic extrusions and related phenomena. This research includes a theoretical component (development of new mathematical models), an experimental component (e.g., work at the USGS debris-flow flume, pictured above with the flume crew in May, 2008), a field component (mostly at Cascades Range volcanoes), and a practical component that emphasizes hazard assessment. ## Links to simulations of 2014 Oso landslide and to USGS Debris-flow Flume Video Archive
http://volcanoes.usgs.gov/vsc/
http://pubs.usgs.gov/of/2007/1315/ ## Contact Information1300 SE Cardinal Court Bldg. 10 Vancouver, WA 98683 riverson@usgs.gov 360-993-8920 360-993-8980 - Fax Back to top |