Publications
Filter Total Items: 2695
1999 Volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory
The Alaska Volcano Observatory (AVO) monitors 41 historically active volcanoes along the Aleutian Arc. Twenty are seismically monitored and for the rest, the AVO monitoring program relies mainly on daily analysis of satellite images, pilot reports, and observations of local residents and ship's crews. In 1999, AVO responded to eruptive activity or suspect volcanic activity at 7 volcanic centers: W
Authors
Robert G. McGimsey, Christina A. Neal, Olga Girina
A 2000-year-long record of climate from the Gulf of California
No abstract available.
Authors
John A. Barron, David Bukry, James L. Bischoff
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, and orie
Authors
Jim E. O'Connor, John E. Costa
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 '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 during a peri
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
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 mass flows ar
Authors
Richard M. Iverson
How should mathematical models of geomorphic processes be judged?
No abstract available.
Authors
Richard M. Iverson
Monthly Strontium/Calcium oscillations in symbiotic coral aragonite: Biological effects limiting the precision of the paleotemperature proxy
In thermodynamic equilibrium with sea water the Sr/Ca ratio of aragonite varies predictably with temperature and the Sr/Ca ratio in coral have thus become a frequently used proxy for past Sea Surface Temperature (SST). However, biological effects can offset the Sr/Ca ratio from its equilibrium value. We report high spatial resolution ion microprobe analyses of well defined skeletal elements in the
Authors
A. Meibom, M. Stage, Joseph L. Wooden, B.R. Constantz, R. B. Dunbar, A. Owen, N. Grumet, C. R. Bacon, C. P. Chamberlain