Publications
Filter Total Items: 3006
Large floods in the United States: Where they happen and why Large floods in the United States: Where they happen and why
The spatial distribution of large gaged floods throughout the United States shows that the locations of most of the largest flows are related to specific combinations of regional climatology, topography, and basin size. Key factors include the general northward trend of decreasing atmospheric moisture, proximity to oceanic moisture sources such as the Pacific Ocean and the Gulf of Mexico...
Authors
Jim E. O'Connor, John E. Costa
Effects of land subsidence in the Greater Houston Area Effects of land subsidence in the Greater Houston Area
No abstract available.
Authors
Devin L. Galloway, Laura S. Coplin, Steven E. Ingebritsen
The Pu‘u ‘Ō‘ō-Kūpaianaha eruption of Kīlauea Volcano, Hawai‘i: The first 20 years The Pu‘u ‘Ō‘ō-Kūpaianaha eruption of Kīlauea Volcano, Hawai‘i: The first 20 years
The Pu'u 'O'o-Kupaianaha eruption started on January 3, 1983. The ensuing 20-year period of nearly continuous eruption is the longest at Kilauea Volcano since the famous lava-lake activity of the 19th century. No rift-zone eruption in more than 600 years even comes close to matching the duration and volume of activity of these past two decades. Fortunately, such a landmark event came...
When models meet managers: Examples from geomorphology When models meet managers: Examples from geomorphology
No abstract available.
Authors
Peter R. Wilcock, John C. Schmidt, M. Gordon Wolman, William E. Dietrich, DeWitt Dominick, Martin W. Doyle, Gordon E. Grant, Richard M. Iverson, David R. Montgomery, Thomas C. Pierson, Steven P. Schilling, Raymond C. Wilson
Prediction in geomorphology Prediction in geomorphology
No abstract available.
Authors
Peter R. Wilcock, Richard M. Iverson
Gravity-driven mass flows Gravity-driven mass flows
Gravity-driven mass flows, also known as sediment gravity flows, include a spectrum of phenomena in which more-or-less coherent mixtures of grains and intergranular fluid flow down slopes. At one end of this spectrum are dilute flows in which momentum is transferred mostly by fluid forces and sediment is largely a passive cargo that increases the effective fluid density. These dilute...
Authors
Richard M. Iverson
How should mathematical models of geomorphic processes be judged? How should mathematical models of geomorphic processes be judged?
No abstract available.
Authors
Richard M. Iverson
Preliminary volcano-hazard assessment for Great Sitkin Volcano, Alaska Preliminary volcano-hazard assessment for Great Sitkin Volcano, Alaska
Great Sitkin Volcano is a composite andesitic stratovolcano on Great Sitkin Island (51°05’ N latitude, 176°25’ W longitude), a small (14 x 16 km), circular volcanic island in the western Aleutian Islands of Alaska. Great Sitkin Island is located about 35 kilometers northeast of the community of Adak on Adak Island and 130 kilometers west of the community of Atka on Atka Island. Great...
Authors
Christopher F. Waythomas, Thomas P. Miller, Christopher J. Nye
Infrasonic tremor observed at Kilauea Volcano, Hawai'i Infrasonic tremor observed at Kilauea Volcano, Hawai'i
[1] Infrasonic array data collected at Kīlauea Volcano, Hawai'i, during November 12–21, 2002 indicate that the active vents and lava tube system near the Pu'u 'Ō'ō vent complex emit almost continuous infrasound in the 0.3–10 Hz frequency band. The spectral content of these infrasonic signals matches well that of synchronous seismic tremor. In sites protected from wind noise, significant...
Authors
M. Garces, A. Harris, C. Hetzer, J. Johnson, S. Rowland, E. Marchetti, P. Okubo
Volcano seismology Volcano seismology
A fundamental goal of volcano seismology is to understand active magmatic systems, to characterize the configuration of such systems, and to determine the extent and evolution of source regions of magmatic energy. Such understanding is critical to our assessment of eruptive behavior and its hazardous impacts. With the emergence of portable broadband seismic instrumentation, availability...
Authors
B. Chouet
New K-Ar ages and the geologic evidence against rejuvenated-stage volcanism at Haleakalā, East Maui, a postshield-stage volcano of the Hawaiian island chain New K-Ar ages and the geologic evidence against rejuvenated-stage volcanism at Haleakalā, East Maui, a postshield-stage volcano of the Hawaiian island chain
The postshield and previously inferred rejuvenated-stage history of Haleakalā volcano is reevaluated on the basis of 52 new K-Ar ages, 42 from the postshield Kula Volcanics and 10 from the overlying Hāna Volcanics. Postshield extrusion was robust from 0.93 to 0.76 Ma. A period of low extrusion rate or volcanic quiescence occurred between 0.76 and 0.65 Ma, well within Kula time. A...
Authors
David R. Sherrod, Yoshitomo Nishimitsu, Takahiro Tagami
Preliminary geologic map of Great Sitkin Volcano, Alaska Preliminary geologic map of Great Sitkin Volcano, Alaska
No abstract available.
Authors
Christopher F. Waythomas, Thomas P. Miller, Christopher Nye