Richard M. Iverson
My USGS career has focused mostly on evaluating and modeling the dynamics and hazards of landslides and debris flows, with a secondary focus on the dynamics of volcanic extrusions. Part of my work involved design, development, and utilization of the USGS debris-flow flume, a unique, large-scale experimental facility at the H.J. Andrews Experimental Forest near Blue River, Oregon.
Career Highlights
Career Highlights
A written account of some career highlights was published in 2020 in Perspectives of Earth and Space Scientists. An oral history interview recounting some of my career highlights is archived at Oregon State University.
Experiments at the Debris-Flow Flume
Experiments at the Debris-Flow Flume
This set of videos presents about 18 hours of footage documenting the 163 experiments conducted at the USGS debris-flow flume from 1992 to 2017.
Professional Experience
Senior Research Hydrologist, USGS Cascades Volcano Observatory
Adjunct Professor, University of Washington and Portland State University
Education and Certifications
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
Honors and Awards
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
U.S. Department of the Interior Distinguished Service Award, 2019
Science and Products
My research career, including information about the debris flow experimental flume facility, is docuymented in this memoir.
Landslide disparities, flume discoveries, and Oso despair
Landslide dynamics is the branch of science that seeks to understand the motion of landslides by applying Newton's laws. This memoir focusses on a 40‐year effort to understand motion of highly mobile—and highly lethal—landslides such as debris avalanches and debris flows. A major component of this work entailed development and operation of the U.S. Geological Survey debris flow flume, a...
Authors
Richard M. Iverson
Filter Total Items: 120
Modelling landslide liquefaction, mobility bifurcation and the dynamics of the 2014 Oso disaster
Some landslides move slowly or intermittently downslope, but others liquefy during the early stages of motion, leading to runaway acceleration and high-speed runout across low-relief terrain. Mechanisms responsible for this disparate behaviour are represented in a two-phase, depth-integrated, landslide dynamics model that melds principles from soil mechanics, granular mechanics and fluid...
Authors
Richard M. Iverson, David L. George
Discussion of “The relation between dilatancy, effective stress and dispersive pressure in granular avalanches” by P. Bartelt and O. Buser (DOI: 10.1007/s11440-016-0463-7)
A paper recently published by Bartelt and Buser (hereafter identified as “the authors”) aims to clarify relationships between granular dilatancy and dispersive pressure and to question the effective stress principle and its application to shallow granular avalanches (Bartelt and Buser in Act Geotech 11:549–557, 2). The paper also criticizes our own recent work, which utilizes the...
Authors
Richard M. Iverson, David L. George
Debris flow runup on vertical barriers and adverse slopes
Runup of debris flows against obstacles in their paths is a complex process that involves profound flow deceleration and redirection. We investigate the dynamics and predictability of runup by comparing results from large-scale laboratory experiments, four simple analytical models, and a depth-integrated numerical model (D-Claw). The experiments and numerical simulations reveal the...
Authors
Richard M. Iverson, David L. George, Matthew Logan
Clawpack: Building an open source ecosystem for solving hyperbolic PDEs
Clawpack is a software package designed to solve nonlinear hyperbolic partial differential equations using high-resolution finite volume methods based on Riemann solvers and limiters. The package includes a number of variants aimed at different applications and user communities. Clawpack has been actively developed as an open source project for over 20 years. The latest major release...
Authors
Richard M. Iverson, Kyle T. Mandli, Aron J. Ahmadia, M.J. Berger, Donna A Calhoun, David L. George, Yiannis Hadjimichael, David I. Ketcheson, Grady L. Lemoine, Randall J. LeVeque
Lahars and their deposits
Lahars occur during volcanic eruptions--or, less predictably, through other processes on steep volcanic terrain--when large masses of water mixed with sediment sweep down and off volcano slopes and commonly incorporate additional sediment and water. Because lahars are water-saturated, both liquid and solid interactions influence their behavior and distinguish them from other related...
Authors
James W. Vallance, Richard M. Iverson
Scaling and design of landslide and debris-flow experiments
Scaling plays a crucial role in designing experiments aimed at understanding the behavior of landslides, debris flows, and other geomorphic phenomena involving grain-fluid mixtures. Scaling can be addressed by using dimensional analysis or – more rigorously – by normalizing differential equations that describe the evolving dynamics of the system. Both of these approaches show that...
Authors
Richard M. Iverson
Non-USGS Publications**
Iverson, R.M., 1980, Processes of accelerated pluvial erosion on desert hillslopes modified by vehicular traffic: Earth Surface Processes, v. 5, no. 4, p. 369‑388.
Iverson, R.M., Hinckley, B.S., Webb, R.H., and Hallet, B., 1981, Physical effects of vehicular disturbances on arid landscapes: Science, v. 212, no. 4497, p. 915‑917.
Hinckley, B.S., Iverson, R.M., and Hallet, B., 1983, Accelerated water erosion in ORV‑use areas: Environmental Effects of Off-road Vehicles: Impacts and Management in Arid Regions, R.H. Webb and H.G. Wilshire, eds., Springer‑Verlag, New York, p. 81‑94.
Elvidge, C.D., and Iverson, R.M., 1983, Regeneration of desert pavement and desert varnish: Environmental Effects of Off-road Vehicles: Impacts and Management in Arid regions, R.H. Webb and H.G. Wilshire, eds., Springer‑Verlag, New York, p. 225‑241.
Iverson, R.M., 1983, Discussion of "A model for creeping flow in landslides" by W.Z. Savage and A.F. Chleborad: Bulletin of the Association of Engineering Geologists, v. 20, no. 4, p. 455‑459.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
My research career, including information about the debris flow experimental flume facility, is docuymented in this memoir.
Landslide disparities, flume discoveries, and Oso despair
Landslide dynamics is the branch of science that seeks to understand the motion of landslides by applying Newton's laws. This memoir focusses on a 40‐year effort to understand motion of highly mobile—and highly lethal—landslides such as debris avalanches and debris flows. A major component of this work entailed development and operation of the U.S. Geological Survey debris flow flume, a...
Authors
Richard M. Iverson
Filter Total Items: 120
Modelling landslide liquefaction, mobility bifurcation and the dynamics of the 2014 Oso disaster
Some landslides move slowly or intermittently downslope, but others liquefy during the early stages of motion, leading to runaway acceleration and high-speed runout across low-relief terrain. Mechanisms responsible for this disparate behaviour are represented in a two-phase, depth-integrated, landslide dynamics model that melds principles from soil mechanics, granular mechanics and fluid...
Authors
Richard M. Iverson, David L. George
Discussion of “The relation between dilatancy, effective stress and dispersive pressure in granular avalanches” by P. Bartelt and O. Buser (DOI: 10.1007/s11440-016-0463-7)
A paper recently published by Bartelt and Buser (hereafter identified as “the authors”) aims to clarify relationships between granular dilatancy and dispersive pressure and to question the effective stress principle and its application to shallow granular avalanches (Bartelt and Buser in Act Geotech 11:549–557, 2). The paper also criticizes our own recent work, which utilizes the...
Authors
Richard M. Iverson, David L. George
Debris flow runup on vertical barriers and adverse slopes
Runup of debris flows against obstacles in their paths is a complex process that involves profound flow deceleration and redirection. We investigate the dynamics and predictability of runup by comparing results from large-scale laboratory experiments, four simple analytical models, and a depth-integrated numerical model (D-Claw). The experiments and numerical simulations reveal the...
Authors
Richard M. Iverson, David L. George, Matthew Logan
Clawpack: Building an open source ecosystem for solving hyperbolic PDEs
Clawpack is a software package designed to solve nonlinear hyperbolic partial differential equations using high-resolution finite volume methods based on Riemann solvers and limiters. The package includes a number of variants aimed at different applications and user communities. Clawpack has been actively developed as an open source project for over 20 years. The latest major release...
Authors
Richard M. Iverson, Kyle T. Mandli, Aron J. Ahmadia, M.J. Berger, Donna A Calhoun, David L. George, Yiannis Hadjimichael, David I. Ketcheson, Grady L. Lemoine, Randall J. LeVeque
Lahars and their deposits
Lahars occur during volcanic eruptions--or, less predictably, through other processes on steep volcanic terrain--when large masses of water mixed with sediment sweep down and off volcano slopes and commonly incorporate additional sediment and water. Because lahars are water-saturated, both liquid and solid interactions influence their behavior and distinguish them from other related...
Authors
James W. Vallance, Richard M. Iverson
Scaling and design of landslide and debris-flow experiments
Scaling plays a crucial role in designing experiments aimed at understanding the behavior of landslides, debris flows, and other geomorphic phenomena involving grain-fluid mixtures. Scaling can be addressed by using dimensional analysis or – more rigorously – by normalizing differential equations that describe the evolving dynamics of the system. Both of these approaches show that...
Authors
Richard M. Iverson
Non-USGS Publications**
Iverson, R.M., 1980, Processes of accelerated pluvial erosion on desert hillslopes modified by vehicular traffic: Earth Surface Processes, v. 5, no. 4, p. 369‑388.
Iverson, R.M., Hinckley, B.S., Webb, R.H., and Hallet, B., 1981, Physical effects of vehicular disturbances on arid landscapes: Science, v. 212, no. 4497, p. 915‑917.
Hinckley, B.S., Iverson, R.M., and Hallet, B., 1983, Accelerated water erosion in ORV‑use areas: Environmental Effects of Off-road Vehicles: Impacts and Management in Arid Regions, R.H. Webb and H.G. Wilshire, eds., Springer‑Verlag, New York, p. 81‑94.
Elvidge, C.D., and Iverson, R.M., 1983, Regeneration of desert pavement and desert varnish: Environmental Effects of Off-road Vehicles: Impacts and Management in Arid regions, R.H. Webb and H.G. Wilshire, eds., Springer‑Verlag, New York, p. 225‑241.
Iverson, R.M., 1983, Discussion of "A model for creeping flow in landslides" by W.Z. Savage and A.F. Chleborad: Bulletin of the Association of Engineering Geologists, v. 20, no. 4, p. 455‑459.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.