Publications
Filter Total Items: 3152
Response of flexible wire rope barriers to debris-flow loading 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 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...
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, Mark 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 Discussion and closure: Slope instability from ground-water seepage
No abstract available.
Authors
Richard M. Iverson, Muniram Budhu, Roger Gobin
What are volcano hazards? 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 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...
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 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...
Authors
Christina Heliker, Peter H. Stauffer, James W. Hendley
Living on active volcanoes: The Island of Hawai'i Living on active volcanoes: The Island of Hawai'i
No abstract available.
Authors
Christina Heliker, Peter H. Stauffer, James W. Hendley
Volcano hazards at Newberry Volcano, Oregon Volcano hazards at Newberry Volcano, Oregon
Newberry volcano is a broad shield volcano located in central Oregon. It has been built by thousands of eruptions, beginning about 600,000 years ago. At least 25 vents on the flanks and summit have been active during several eruptive episodes of the past 10,000 years. The most recent eruption 1,300 years ago produced the Big Obsidian Flow. Thus, the volcano's long history and recent...
Authors
David R. Sherrod, Larry G. Mastin, William E. Scott, Steven P. Schilling
The Cataclysmic 1991 Eruption of Mount Pinatubo, Philippines The Cataclysmic 1991 Eruption of Mount Pinatubo, Philippines
The second-largest volcanic eruption of this century, and by far the largest eruption to affect a densely populated area, occurred at Mount Pinatubo in the Philippines on June 15, 1991. The eruption produced high-speed avalanches of hot ash and gas, giant mudflows, and a cloud of volcanic ash hundreds of miles across. The impacts of the eruption continue to this day.
Authors
Christopher G. Newhall, James W. Hendley, Peter H. Stauffer
Magmatic processes that generated the rhyolite of Glass Mountain, Medicine Lake volcano, N. California Magmatic processes that generated the rhyolite of Glass Mountain, Medicine Lake volcano, N. California
Glass Mountain consists of a 1 km3, compositionally zoned rhyolite to dacite glass flow containing magmatic inclusions and xenoliths of underlying shallow crust. Mixing of magmas produced by fractional crystallization of andesite and crustal melting generated the rhyolite of Glass Mountain. Melting experiments were carried out on basaltic andesite and andesite magmatic inclusions at 100...
Authors
Timothy L. Grove, Julie Donnelly-Nolan, T. Housh
Lahars of Mount Pinatubo, Philippines Lahars of Mount Pinatubo, Philippines
On June 15, 1991, Mount Pinatubo in the Philippines exploded in the second largest volcanic eruption on Earth this century. This eruption deposited more than 1 cubic mile (5 cubic kilometers) of volcanic ash and rock fragments on the volcano's slopes. Within hours, heavy rains began to wash this material down into the surrounding lowlands in giant, fast-moving mudflows called lahars. In...
Authors
Christopher G. Newhall, Peter H. Stauffer, James W. Hendley
Benefits of volcano monitoring far outweigh costs - the case of Mount Pinatubo Benefits of volcano monitoring far outweigh costs - the case of Mount Pinatubo
The climactic June 1991 eruption of Mount Pinatubo, Philippines, was the largest volcanic eruption in this century to affect a heavily populated area. Because it was forecast by scientists from the Philippine Institute of Volcanology and Seismology and the U.S. Geological Survey, civil and military leaders were able to order massive evacuations and take measures to protect property...
Authors
Chris G. Newhall, James W. Hendley, Peter H. Stauffer