Publications
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Utah braces for the future Utah braces for the future
Almost 75 percent of Utah's population lives near the Wasatch Fault. Earth scientists have shown that this fault has repeatedly experienced strong earthquakes of magnitude 7 or larger and will continue to do so in the future. Efforts to increase public awareness of earthquake hazards in Utah have resulted in residents and community leaders taking actions that will save lives and reduce...
Authors
Michael N. Machette, William M. Brown
Bibliography for Hayes, Spurr, Crater Peak, Redoubt, Iliamna, Augustine, Douglas, and Aniakchak volcanoes, Alaska Bibliography for Hayes, Spurr, Crater Peak, Redoubt, Iliamna, Augustine, Douglas, and Aniakchak volcanoes, Alaska
Alaska has more than 40 active volcanoes, many of which are close to the major population centers of south-central Alaska. This bibliography was compiled to assist in the preparation of volcano hazard evaluations at Cook Inlet volcanoes. It lists articles, reports, and maps about the geology and hydrology of Hayes, Spurr, Redoubt, Iliamna, Augustine, and Douglas volcanoes in the Cook...
Authors
K.J. Lemke, B.A. May, A.M. Vanderpool
Hydrologic effects associated with the January 17, 1994 Northridge, California, earthquake Hydrologic effects associated with the January 17, 1994 Northridge, California, earthquake
This report compiles hydrologic observations in southern California associated with the 1994 Mw = 6.7 Northridge, California earthquake. In southern California, the largest ground water level change was a drop of 52 cm at Crystalaire. Most of the steplike water-level changes recorded following the Northridge earthquake agreed in direction with the sign of the calculated coseismic volume...
Authors
E.G. Quilty, C. D. Farrar, D. L. Galloway, S. N. Hamlin, R. J. Laczniak, E.A. Roeloffs, M.L. Sorey, D.E. Woodcock
Volcanic-hazard zonation for Mount St. Helens, Washington, 1995 Volcanic-hazard zonation for Mount St. Helens, Washington, 1995
No abstract available.
Authors
E.W. Wolfe, T.C. Pierson
An isotope hydrology study of the Kilauea volcano area, Hawaii An isotope hydrology study of the Kilauea volcano area, Hawaii
Isotope tracer methods were used to determine flow paths, recharge areas, and relative age for ground water in the Kilauea volcano area on the Island of Hawaii. Stable isotopes in rainfall show three distinct isotopic gradients with elevation, which are correlated with trade-wind, rain shadow, and high-elevation climatological patterns. Temporal variations in isotopic composition of...
Authors
M. A. Scholl, S. E. Ingebritsen, C. J. Janik, J. P. Kauahikaua
Experimental studies of deposition at a debris-flow flume Experimental studies of deposition at a debris-flow flume
Geologists commonly infer the flow conditions and the physical properties of debris flows from the sedimentologic, stratigraphic, and morphologic characteristics of their deposits. However, such inferences commonly lack corroboration by direct observation because the capricious nature of debris flows makes systematic observation and measurement of natural events both difficult and...
Authors
Jon J. Major
Some fluid-inclusion measurements for geothermal drill holes in California, Nevada, El Salvador, and Russia Some fluid-inclusion measurements for geothermal drill holes in California, Nevada, El Salvador, and Russia
The purpose of this report is to make available fluid-inclusion information from drill holes in five geothermal areas: The Geysers and Long Valley caldera in northern California; Steamboat Springs, Nevada; the Ahuachapan field of El Salvador, Central America; and the Mutnovsky geothermal field, Kamchatka Peninsula, Russia. These data were produced at the request of various individuals to...
Authors
Keith E. Bargar
Silver and other tracers of sewage particles in coastal and deep sea sediments off the east coast, USA Silver and other tracers of sewage particles in coastal and deep sea sediments off the east coast, USA
No abstract available.
Authors
Michael H. Bothner, Marilyn R. Buchholtz ten Brink, G.E. Ravizza
Exploring storm surge Exploring storm surge
This video provides a thorough discussion of storm surge, one of the most dangerous elements of hurricanes and major storms. This video illustrates basic storm surge principles, shows actual footage of storm surge damage and relates high-water level data collection by the U.S. Geological Survey to the task of recreating the storm surge event.
Authors
A. B. Tihansky, A. D. Duerr
Estimating heat capacity and heat content of rocks Estimating heat capacity and heat content of rocks
New heat-capacity measurements are reported for four rock types; Westerly granite from Bradford, RI, andesite from Lake County, OR, peridotite from Sonoma County, CA, and basalt from the Columbia River Group. Measurements were made on powders of the rocks in the temperature range of 340 to about 1000 K. Our measured heat-capacity values for rocks and other measurements of heat capacity...
Authors
Eugene C. Robertson, Bruch S. Hemingway
Rift flank segmentation, basin initiation and propagation: a neotectonic example from Lake Baikal Rift flank segmentation, basin initiation and propagation: a neotectonic example from Lake Baikal
New surficial data (field, Landsat TM and topography) define morpho-tectonic domains and rift flank segmentation in the Ol'khon region of the Central Baikal rift. Deformation, drainage and depositional patterns indicate a change in the locus of active extension that may relate to a recent (
Authors
Susan M. Agar, Kim D. Klitgord