Publications
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Digital data for volcano hazards in the Crater Lake Region, Oregon
Crater Lake lies in a basin, or caldera, formed by collapse of the Cascade volcano known as Mount Mazama during a violent, climactic eruption about 7,700 years ago. This event dramatically changed the character of the volcano so that many potential types of future events have no precedent there. This potentially active volcanic center is contained within Crater Lake National Park, visited by 500,0
Authors
S. P. Schilling, S. Doelger, C. R. Bacon, L.G. Mastin, K.E. Scott, M. Nathenson
Digital data for volcano hazards of the Three Sisters region, Oregon
Three Sisters is one of three active volcanic centers that lie close to rapidly growing communities and resort areas in Central Oregon. The major composite volcanoes of this area are clustered near the center of the region and include South Sister, Middle Sister, and Broken Top. Additionally, hundreds of mafic volcanoes are scattered throughout the Three Sisters area. These range from small cinder
Authors
S. P. Schilling, S. Doelger, W. E. Scott, R. M. Iverson
Digital Data for Volcano Hazards from Mount Rainier, Washington, Revised 1998
Mount Rainier at 4393 meters (14,410 feet) is the highest peak in the Cascade Range; a dormant volcano having glacier ice that exceeds that of any other mountain in the conterminous United States. This tremendous mass of rock and ice, in combination with great topographic relief, poses a variety of geologic hazards, both during inevitable future eruptions and during the intervening periods of repo
Authors
S. P. Schilling, S. Doelger, R. P. Hoblitt, J. S. Walder, C. L. Driedger, K. M. Scott, P. T. Pringle, J.W. Vallance
Compilation of Disruptions to Airports by Volcanic Activity (Version 1.0, 1944-2006)
Volcanic activity has caused significant hazards to numerous airports worldwide, with local to far-ranging effects on travelers and commerce. To more fully characterize the nature and scope of volcanic hazards to airports, we collected data on incidents of airports throughout the world that have been affected by volcanic activity, beginning in 1944 with the first documented instance of damage to m
Authors
Marianne Guffanti, Gari C. Mayberry, Thomas J. Casadevall, Richard Wunderman
Digital Data for Volcano Hazards of the Mount Hood Region, Oregon
Snow-clad Mount Hood dominates the Cascade skyline from the Portland metropolitan area to the wheat fields of Wasco and Sherman Counties. The mountain contributes valuable water, scenic, and recreational resources that help sustain the agricultural and tourist segments of the economies of surrounding cities and counties. Mount Hood is also one of the major volcanoes of the Cascade Range, having er
Authors
S. P. Schilling, S. Doelger, W. E. Scott, T. C. Pierson, J. E. Costa, C. A. Gardner, J.W. Vallance, Jon J. Major
Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2007
Between January 1 and December 31, 2007, AVO located 6,664 earthquakes of which 5,660 occurred within 20 kilometers of the 33 volcanoes monitored by the Alaska Volcano Observatory. Monitoring highlights in 2007 include: the eruption of Pavlof Volcano, volcanic-tectonic earthquake swarms at the Augustine, Illiamna, and Little Sitkin volcanic centers, and the cessation of episodes of unrest at Fourp
Authors
James P. Dixon, Scott D. Stihler, John A. Power
Magmatically triggered slow slip at Kilauea Volcano, Hawaii
We demonstrate that a recent dike intrusion probably triggered a slow fault-slip event (SSE) on Kilauea volcano's mobile south flank. Our analysis combined models of Advanced Land Observing Satellite interferometric dike-intrusion displacement maps with continuous Global Positioning System (GPS) displacement vectors to show that deformation nearly identical to four previous SSEs at Kilauea occurre
Authors
Benjamin A. Brooks, James Foster, David Sandwell, Cecily Wolfe, Paul G. Okubo, Michael P. Poland, David Myer
Short-term response of methane fluxes and methanogen activity to water table and soil warming manipulations in an Alaskan peatland
Growing season CH4 fluxes were monitored over a two year period following the start of ecosystem-scale manipulations of water table position and surface soil temperatures in a moderate rich fen in interior Alaska. The largest CH4 fluxes occurred in plots that received both flooding (raised water table position) and soil warming, while the lowest fluxes occurred in unwarmed plots in the lowered wat
Authors
M. R. Turetsky, C. C. Treat, M. P. Waldrop, J. M. Waddington, Jennifer W. Harden, A. David McGuire
A Versatile Time-Lapse Camera System Developed by the Hawaiian Volcano Observatory for Use at Kilauea Volcano, Hawaii
Volcanoes can be difficult to study up close. Because it may be days, weeks, or even years between important events, direct observation is often impractical. In addition, volcanoes are often inaccessible due to their remote location and (or) harsh environmental conditions. An eruption adds another level of complexity to what already may be a difficult and dangerous situation.
For these reasons
Authors
Tim R. Orr, Richard P. Hoblitt
Exponential decline of aftershocks of the M7.9 1868 great Kau earthquake, Hawaii, through the 20th century
The remarkable catalog of Hawaiian earthquakes going back to the 1820s is based on missionary diaries, newspaper accounts, and instrumental records and spans the great M 7.9 Kau earthquake of April 1868 and its aftershock sequence. The earthquake record since 1868 defines a smooth curve complete to M 5.2 of the declining rate into the 21st century, after five short volcanic swarms are removed. A s
Authors
Fred W. Klein, Thomas L. Wright
Evolution of deformation studies on active Hawaiian volcanoes
Everything responds to pressure, even rocks. Deformation studies involve measuring and interpreting the changes in elevations and horizontal positions of the land surface or sea floor. These studies are variously referred to as geodetic changes or ground-surface deformations and are sometimes indexed under the general heading of geodesy. Deformation studies have been particularly useful on active
Authors
Robert W. Decker, Arnold Okamura, Asta Miklius, Michael P. Poland
Digital elevation models of the Pre-Eruption 2000 Crater and 2004-07 Dome-Building Eruption at Mount St. Helens, Washington, USA
Presented in this report are 27 digital elevation model (DEM) datasets for the crater area of Mount St. Helens. These datasets include pre-eruption baseline data collected in 2000, incremental model subsets collected during the 2004–07 dome building eruption, and associated shaded-relief image datasets. Each dataset was collected photogrammetrically with digital softcopy methods employing a combin
Authors
James A. Messerich, Steve P. Schilling, Ren A. Thompson