Publications
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Hydrologic data for Long Valley Caldera, Mono County, California, 1994-96
Hydrologic data were collected during 1994-96 as part of the U.S. Geological Survey's long-term Volcanic Hazards Monitoring Program of the Long Valley Caldera, Mono County, California, and the Long Valley Hydrologic Advisory Committee monitoring program. Hydrologic data collected include continuous record of ground-water levels in 4 wells; instantaneous measurements of ground-water levels in 53 we
Authors
James F. Howle, Christopher D. Farrar
Volcanoes of the Wrangell Mountains and Cook Inlet region, Alaska: selected photographs
Alaska is home to more than 40 active volcanoes, many of which have erupted violently and repeatedly in the last 200 years. This CD-ROM contains 97 digitized color 35-mm images which represent a small fraction of thousands of photographs taken by Alaska Volcano Observatory scientists, other researchers, and private citizens. The photographs were selected to portray Alaska's volcanoes, to document
Authors
Christina A. Neal, Robert G. McGimsey, Michael F. Diggles
Lahar Hazards at Concepción volcano, Nicaragua
Concepción is one of Nicaragua’s highest and most active volcanoes. The symmetrical cone occupies the northeastern half of a dumbbell shaped island called Isla Ometepa. The dormant volcano, Maderas, occupies the southwest half of the island. A narrow isthmus connects Concepción and Maderas volcanoes. Concepción volcano towers more than 1600 m above Lake Nicaragua and is within 5 to 10 km of severa
Authors
J.W. Vallance, S. P. Schilling, G. Devoli, M.M. Howell
Global Positioning System (GPS) survey of Augustine Volcano, Alaska, August 3-8, 2000: data processing, geodetic coordinates and comparison with prior geodetic surveys
Between August 3 and 8,2000,the Alaska Volcano Observatory completed a Global Positioning System (GPS) survey at Augustine Volcano, Alaska. Augustine is a frequently active calcalkaline volcano located in the lower portion of Cook Inlet (fig. 1), with reported eruptions in 1812, 1882, 1909?, 1935, 1964, 1976, and 1986 (Miller et al., 1998). Geodetic measurements using electronic and optical survey
Authors
Benjamin A. Pauk, John A. Power, Mike Lisowski, Daniel Dzurisin, Eugene Y. Iwatsubo, Tim Melbourne
Evolution and timing of suspended-sediment transport following the 1980 Mount St. Helens eruption
No abstract available.
Authors
Jon J. Major
A structural and geochemical study of the Western Volcanic Zone, Iceland: Preliminary results
No abstract available.
Authors
S. P. Jakobsson, G. L. Johnson, James G. Moore
Solar electric power for instruments at remote sites
Small photovoltaic (PV) systems are the preferred method to power instruments operating at permanent locations away from the electric power grid. The low-power PV power system consists of a solar panel or small array of panels, lead-acid batteries, and a charge controller.
Even though the small PV power system is simple, the job of supplying power at a remote site can be very demanding. The equip
Authors
P.J. McChesney
Bibliography of literature from 1990-1997 pertaining to Holocene and fumarolic Pleistocene volcanoes of Alaska, Canada, and the conterminous United States
The 1980's and 1990's were marked by frequent worldwide destructive volcanic
eruptions. Significant loss of life and property during eruptions, and extensive media coverage of
volcanic events around the globe have brought volcanic processes and hazards increasingly to the
forefront of scientific, governmental, and public attention (e.g., Casadevall, 1994; Pringle, 1994).
A result of these circums
Authors
Christopher J. Harpel, John W. Ewert
Late Holocene Peléan-style eruption at Tacaná volcano, Mexico and Guatemala: past, present, and future hazards
Tacaná volcano, located on the border between Mexico and Guatemala, marks the northern extent of the Central American volcanic chain. Composed of three volcanic structures, it is a volcanic complex that has had periodic explosive eruptions for at least the past 40 k.y. The most recent major eruption occurred at the San Antonio volcano, the youngest volcanic edifice forming the complex, about 1950
Authors
J. L. Macías, J. M. Espíndola, A. Garcia-Palomo, K. M. Scott, S. Hughes, J C. Mora
Invisible CO2 gas killing trees at Mammoth Mountain, California
Since 1980, scientists have monitored geologic unrest in Long Valley Caldera and at adjacent Mammoth Mountain, California. After a persistent swarm of earthquakes beneath Mammoth Mountain in 1989, geologists discovered that large volumes of carbon dioxide (CO2 ) gas were seeping from beneath this volcano. This gas is killing trees on the mountain and also can be a danger to people. The U.S. Geolog
Authors
Michael L. Sorey, Christopher D. Farrar, Terrance M. Gerlach, Kenneth A. McGee, William C. Evans, Elizabeth M. Colvard, David P. Hill, Roy A. Bailey, John D. Rogie, James W. Hendley, Peter H. Stauffer
Living with a restless caldera: Long Valley, California
No abstract available
Authors
David P. Hill, Roy A. Bailey, Michael L. Sorey, James W. Hendley, Peter H. Stauffer