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Publication Extents

Not all publications have extents, not all extents are completely accurate
Earthquakes, May-June 1988
W. J. Person
1988, Earthquakes & Volcanoes (USGS) (20) 196-198
There were no major earthquakes during the months of May and June. Only one earthquake-related death was reported; this occurred on June 20 in the Philippine Islands. In the United States, three moderate earthquakes were expereinced in California but none crashed deaths or injuries. ...
Volcanology in Hawaii
R. Decker, B. Decker
1988, Earthquakes & Volcanoes (USGS) (20) 4-30
Polynesians who first inhabited the Hawaiian Islands told in legend about Pele, Goddess of volcanic fires, who migrated from the Island of Kauai to Oahu, then to Maui, and finally to her present home in Kilauea Volcano's Halemaumau Crater on the Island of Hawaii. Geologists today accept this same relative...
Organic geothermometry of petroleum from Escanaba Trough, offshore northern California
Keith A. Kvenvolden, John B. Rapp, Frances D. Hostettler, J. David, George E. Claypool
1988, Organic Geochemistry (13) 351-355
We have measured the extent of hopane and sterane isomerization and of monoaromatic-steroid-hydrocarbon aromatization in a sample of hydrothermally derived petroleum from the Escanaba Trough, a sediment-covered, volcanically active ridge axis. The results, along with kinetic parameters, predict the possible time-temperature history of the petrolum-forming process for this sample. The...
State public policy issues involved with the Parkfield prediction experiment.
R. Andrews, J. Goltz
1988, Earthquakes & Volcanoes (USGS) (20) 87-91
The earthquake-prediction experiment at Parkfield may well be the most important such experiment currently underway worldwide. Its importance, however, extends beyond the scientific data that will be gathered and whether those data that will be gathered and whether those data can provide reliable prediction methods. Important public policy lessons are...
Low molecular weight species in humic and fulvic fractions
M. A. Wilson, P. J. Collin, Ronald L. Malcolm, E. Michael Perdue, P. Cresswell
1988, Organic Geochemistry (12) 7-12
Fourier transform solution 1H nuclear magnetic resonance (NMR) spectrometry with homogated water peak irradiation is a useful method for detecting low molecular weight substances in humic extracts. Succinate, acetate, methanol, formate, lactate and some aryl methoxyl compounds have been detected in extracts from a wide range of sources. In view of...
Hydraulic conductivity of a sandy soil at low water content after compaction by various methods
John R. Nimmo, Katherine C. Akstin
1988, Soil Science Society of America Journal (52) 303-310
To investigate the degree to which compaction of a sandy soil influences its unsaturated hydraulic conductivity K, samples of Oakley sand (now in the Delhi series; mixed, thermic, Typic Xeropsamments) were packed to various densities and K was measured by the steady-state centrifuge method. The air-dry, machine packing was followed...
Earthquakes, July-August 1988
W. J. Person
1988, Earthquakes & Volcanoes (USGS) (20) 234-237
Major earthquakes (7.0-7.9) struck the Burma-India border on August 6 and the Solomon Islands on August 10. The most devastating earthquake during this reporting period was a magnitude 6.6 on the Nepal-India border on August 20. In the United States, there were no casualties from earthquakes but moderate earthquakes (5.0-5.9) were...
History of significant earthquakes in the Parkfield area
W. H. Bakun
1988, Earthquakes & Volcanoes (USGS) (20) 45-51
Seismicity on the San Andreas fault near Parkfield occurs in a tectonic section that differs markedly from neighboring sections along the San Andreas to the northwest and to the southeast. Northwest of the Parkfield section, small shocks (magnitudes of less than 4) do occur frequently, but San Andreas movement occurs...
Geological hazards programs and research in the U.S.A
J.R. Filson
1988, Earthquakes & Volcanoes (USGS) (20) 176-189
Until recently, volcanic eruptions, earthquakes and major ground failures in populated regions have been viewed as natural disasters that were unpredictable and producing effects that were unavoidable. research over the past few decades has led to an increased understanding of the effects and causes of geological hazards and to a...
Fishery research in the Great Lakes using a low-cost remotely operated vehicle
Gregory W. Kennedy, Charles L. Brown, Ray L. Argyle
1988, Conference Paper, Inshore '88 Conference Proceedings
We used a MiniROVER MK II remotely operated vehicle (ROV) to collect ground-truth information on fish and their habitat in the Great Lakes that have traditionally been collected by divers, or with static cameras, or submersibles. The ROV, powered by 4 thrusters and controlled by the pilot at the surface,...
Molecular conductivity indices for modelling toxicities of Great Lakes contaminants to Daphnia pulex
James P. Hickey, Dora R. M. Passino, Anthony M. Frank
1988, Conference Paper, Preprints of papers presented at the 3rd Chemical Congress of North America and 195th ACS National Meeting
Hazard assessment of hundreds of observed and potential contaminants in fish, sediment, and water of the Great Lakes is necessary to determine impact on fishery sources and other aquatic biota. The hundreds of new compunds introduced each year have few measured properties. Mathematical models based on quantitative structure-activity relationships (QSARs)...
The USGS plan for short-term prediction of the anticipated Parkfield earthquake
W. H. Bakun
1988, Earthquakes & Volcanoes (USGS) (20) 83-86
Aside from the goal of better understanding the Parkfield earthquake cycle, it is the intention of the U.S Geological Survey to attempt to issue a warning shortly before the anticipated earthquake. Although short-term earthquake warnings are not yet generally feasible, the wealth of information available for the previous significant Parkfield...
Geophysical instrumentation near Parkfield
W. H. Bakun
1988, Earthquakes & Volcanoes (USGS) (20) 60-71
The geophysical instrumentation operated by the U.S Geological Survey and others near Parkfield is designed to monitor ongoing tectonic processes that generate earthquakes and to record the strong shaking that results from larger shocks and its effects. this discussion focuses on the former objectives; the latter is discussed in the...
General solutions For viscoplastic debris flow
Cheng-lung Chen
1988, Journal of Hydraulic Engineering (114) 259-282
Theoretical velocity profile and theoretical pressure and concentration distributions for (steady) uniform debris flow in wide channels are derived from a generalized viscoplastic fluid (GVF) model without imposing R. A. Bagnold's assumption of constant grain concentration. Good agreement between the theoretical velocity profile and the experimental data of Japanese scientists...
Evolution of silicic magma in the upper crust: the mid-Tertiary Latir volcanic field and its cogenetic granitic batholith, northern New Mexico, USA
P. W. Lipman
1988, Transactions of the Royal Society of Edinburgh, Earth Sciences (79) 265-288
Structural and topographic relief along the eastern margin of the Rio Grande rift, northern New Mexico, provides a remarkable cross-section through the 26-Ma Questa caldera and cogenetic volcanic and plutonic rocks of the Latir field. Exposed levels increase in depth from mid-Tertiary depositional surfaces in northern parts of the igneous...
Two-dimensional Lagrangian simulation of suspended sediment
David H. Schoellhamer
1988, Journal of Hydraulic Engineering (114) 1192-1209
A two‐dimensional laterally averaged model for suspended sediment transport in steady gradually varied flow that is based on the Lagrangian reference frame is presented. The layered Lagrangian transport model (LLTM) for suspended sediment performs laterally averaged Lagrangian calculations with steady or unsteady upstream boundary concentration. The elevations of nearly horizontal...
Cyclic development of igneous features and their relationship to high-temperature hydrothermal features in the Henderson porphyry molybdenum deposit, Colorado
R.B. Carten, E. P. Geraghty, B.M. Walker
1988, Economic Geology (83) 266-296
The Henderson porphyry molybdenum deposit was formed by the superposition of coupled alteration and mineralization events, of varying intensity and size, that were associated with each of at least 11 intrusions. Deposition of molybdenite was accompanied by time-equivalent silicic and potassic alteration. High-temperature alteration and mineralization are spatially and temporally...
American wild celery (Vallisneria americana): Ecological considerations for restoration
C. E. Korschgen, W. L. Green
1988, Technical Report 19
The success of vegetation management programs for waterfowl is dependent on knowing the physical and physiological requirements of target species. Lakes and riverine impoundments that contain an abundance of the American wildcelery (Vallisneria americana ) have traditionally been favored by canvasbacks (Aythya valisineria ) and other waterfowl...
A finite element model for tides and currents with field applications
Roy A. Walters
1988, Communications in Applied Numerical Methods (4) 401-411
A finite element model, based upon the shallow water equations, is used to calculate tidal amplitudes and currents for two field-scale test problems. Because tides are characterized by line spectra, the governing equations are subjected to harmonic decomposition. Thus the solution variables are the real and imaginary parts of the...