Publications
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Sulfur dioxide emission rates of Kilauea Volcano, Hawaii, 1979-1997
Sulfur dioxide (SO2) emission rates from Kilauea Volcano were first measured by Stoiber and Malone (1975) and have been measured on a regular basis since 1979 (Casadevall and others, 1987; Greenland and others, 1985; Elias and others, 1993; Elias and Sutton, 1996). The purpose of this report is to present a compilation of Kilauea SO2 emission rate data from 1979 through 1997 with ancillary meteoro
Authors
Tamar Elias, A. J. Sutton, J. B. Stokes, T. J. Casadevall
Pebble orientation on large, experimental debris-flow deposits
Replicable, pronounced orientation of discoid pebbles (≥8 mm) embedded on surfaces of large (∼10 m3) experimental debris-flow deposits reveals that strongly aligned, imbricate fabric can develop rapidly over short distances in mass flows. Pebble long axes aligned subparallel to deposit margins as well as subparallel to margins of surge waves arrested within the deposits. Pebble alignment exhibited
Authors
J. J. Major
Experimental analysis of debris-flow deposition--process and effects of pore-fluid pressure
No abstract available.
Authors
Jon J. Major, Richard M. Iverson
Response of flexible wire rope barriers to debris-flow loading
No abstract available.
Authors
Jay S. DeNatale, Gregg L. Fiegel, Richard M. Iverson, Jon J. Major, Richard G. Lahusen, John D. Duffy, Gregory D. Fisher
The Loma Prieta, California, earthquake of October 17, 1989: Aftershocks and postseismic effects
While the damaging effects of the earthquake represent a significant social setback and economic loss, the geophysical effects have produced a wealth of data that have provided important insights into the structure and mechanics of the San Andreas Fault system. Generally, the period after a large earthquake is vitally important to monitor. During this part of the seismic cycle, the primary fault a
Authors
Paul A. Reasenberg, Lynn D. Dietz, William L. Ellsworth, Robert W. Simpson, John W. Gephart, Susan Y. Schwartz, Glenn D. Nelson, H. Guo, A. Lerner-Lam, William Menke, Susan E. Hough, Leif Wennerberg, K.S. Breckenridge, Jeff Behr, Roger G. Bilham, Paul Bodin, Arthur G. Sylvester, Jon S. Galehouse, R. Burgmann, Paul Segall, Michael Lisowski, Jerry L. Svarc, John Langbein, M.F. Linker, J.R. Rice, M. T. Gladwin, R. L. Gwyther, R.H.G. Hart, Randall Mackie, Theodore R. Madden, Edward A. Nichols
Discussion and closure: Slope instability from ground-water seepage
No abstract available.
Authors
Richard M. Iverson, Muniram Budhu, Roger Gobin
What are volcano hazards?
Volcanoes give rise to numerous geologic and hydrologic hazards. U.S. Geological Survey (USGS) scientists are assessing hazards at many of the almost 70 active and potentially active volcanoes in the United States. They are closely monitoring activity at the most dangerous of these volcanoes and are prepared to issue warnings of impending eruptions or other hazardous events.
Authors
Bobbie Myers, Steven R. Brantley, Peter R. Stauffer, James W. Hendley
Volcano hazards in the Mount Hood region, Oregon
Mount Hood is a potentially active volcano close to rapidly growing communities and recreation areas. The most likely widespread and hazardous consequence of a future eruption will be for lahars (rapidly moving mudflows) to sweep down the entire length of the Sandy (including the Zigzag) and White River valleys. Lahars can be generated by hot volcanic flows that melt snow and ice or by landslides
Authors
W. E. Scott, T. C. Pierson, S. P. Schilling, J. E. Costa, C. A. Gardner, J.W. Vallance, J. J. Major
Living on active volcanoes - The Island of Hawai'i
People on the Island of Hawai'i face many hazards that come with living on or near active volcanoes. These include lava flows, explosive eruptions, volcanic smog, damaging earthquakes, and tsunamis (giant seawaves). As the population of the island grows, the task of reducing the risk from volcano hazards becomes increasingly difficult. To help protect lives and property, U.S. Geological Survey (US
Authors
Christina Heliker, Peter H. Stauffer, James W. Hendley
Living on active volcanoes: The Island of Hawai'i
No abstract available.
Authors
Christina Heliker, Peter H. Stauffer, James W. Hendley
Debris-flow mobilization from landslides
Field observations, laboratory experiments, and theoretical analyses indicate that landslides mobilize to form debris flows by three processes: (a) widespread Coulomb failure within a sloping soil, rock, or sediment mass, (b) partial or complete liquefaction of the mass by high pore-fluid pressures, and (c) conversion of landslide translational energy to internal vibrational energy (i.e. granular
Authors
Richard M. Iverson, Mark E. Reid, Richard G. Lahusen
Imaging the crustal magma sources beneath Mauna Loa and Kilauea volcanoes, Hawaii
Three-dimensional seismic P-wave traveltime tomography is used to image the magma sources beneath Mauna Loa and Kilauea volcanoes, Hawaii. High-velocity bodies (>6.4 km/s) in the upper 9 km of the crust beneath the summits and rift zones of the volcanoes correlate with zones of high magnetic intensities and are interpreted as solidified gabbro-ultramafic cumulates from which the surface volcanism
Authors
Paul G. Okubo, Harley M. Benz, Bernard A. Chouet