Publications
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An assessment of the near-surface accuracy of the international geomagnetic reference field 1980 model of the main geomagnetic field An assessment of the near-surface accuracy of the international geomagnetic reference field 1980 model of the main geomagnetic field
The new International Geomagnetic Reference Field (IGRF) model of the main geomagnetic field for 1980 is based heavily on measurements from the MAGSAT satellite survey. Assessment of the accuracy of the new model, as a description of the main field near the Earth's surface, is important because the accuracy of models derived from satellite data can be adversely affected by the magnetic...
Authors
N.W. Peddie, A.K. Zunde
Why deposits of longitudinal dunes are rarely recognized in the geologic record Why deposits of longitudinal dunes are rarely recognized in the geologic record
Dunes that are morphologically of linear type, many of which are probably of longitudinal type in a morphodynamic sense, are common in modern deserts, but their deposits are rarely identified in aeolian sandstones. One reason for non-recognition of such dunes is that they can migrate laterally when they are not exactly parallel to the long-term sand-transport direction, thereby...
Authors
David M. Rubin, Ralph E. Hunter
Saudi Arabian seismic-refraction profile: A traveltime interpretation of crustal and upper mantle structure Saudi Arabian seismic-refraction profile: A traveltime interpretation of crustal and upper mantle structure
The crustal and upper mantle compressional-wave velocity structure across the southwestern Arabian Shield has been investigated by a 1000-km-long seismic refraction profile. The profile begins in Mesozoic cover rocks near Riyadh on the Arabian Platform, trends southwesterly across three major Precambrian tectonic provinces, traverses Cenozoic rocks of the coastal plain near Jizan, and...
Authors
Walter D. Mooney, M. E. Gettings, H. R. Blank, J. H. Healy
Feasibility of a nationwide program for the identification and delineation of hazards from mud flows and other landslides; Chapter A, Landslide classification for identification of mud flows and other landslides Feasibility of a nationwide program for the identification and delineation of hazards from mud flows and other landslides; Chapter A, Landslide classification for identification of mud flows and other landslides
No abstract available.
Authors
Russell H. Campbell, David J. Varnes, Robert W. Fleming, Monty A. Hampton, David B. Prior, Dwight A. Sangrey, Donald R. Nichols, Earl E. Brabb
Report on recommended list of structures for seismic instrumentation in San Bernardino County, California Report on recommended list of structures for seismic instrumentation in San Bernardino County, California
No abstract available.
Authors
G. Brady, Mehmet Çelebi, C. Rojahn, Wilfred Iwan, G. Hart, G. Pardoen, L. Schoelkopf, R. Haskell, K. Topping, Erdal Safak, R.P. Maley
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, September 1985 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, September 1985
No abstract available.
Authors
John B. Townshend, J.E. Papp, E.A. Sauter, L.Y. Torrence, P.A. Franklin
Steens Mountain geomagnetic polarity transition is a single phenomenon Steens Mountain geomagnetic polarity transition is a single phenomenon
[No abstract available]
Authors
C. S. Grommé, E. A. Mankinen, M. Prevot, R. S. Coe
A general earthquake-observation system (GEOS) A general earthquake-observation system (GEOS)
Microprocessor technology has permitted the development of a General Earthquake-Observation System (GEOS) useful for most seismic applications. Central-processing-unit control via robust software of system functions that are isolated on hardware modules permits field adaptability of the system to a wide variety of active and passive seismic experiments and straightforward modification...
Authors
R. D. Borcherdt, Joe B. Fletcher, E.G. Jensen, G.L. Maxwell, J.R. VanSchaack, R.E. Warrick, E. Cranswick, M.J.S. Johnston, R. McClearn
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, July 1985 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, July 1985
No abstract available.
Authors
John B. Townshend, J.E. Papp, E.A. Sauter, L.Y. Torrence, P.A. Franklin
Feasibility of a nationwide program for the identification and delineation of hazards from mud flows and other landslides; Chpater B, Methods and costs for the delineation of susceptibility to mud flows and other landslides Feasibility of a nationwide program for the identification and delineation of hazards from mud flows and other landslides; Chpater B, Methods and costs for the delineation of susceptibility to mud flows and other landslides
No abstract available.
Authors
Russell H. Campbell
Monitoring the hydrothermal system in Long Valley caldera, California Monitoring the hydrothermal system in Long Valley caldera, California
An ongoing program to monitor the hydrothermal system in Long Valley for changes caused by volcanic or tectonic processes has produced considerable data on the water chemistry and discharge of springs and fluid temperatures and pressures in wells. Chemical and isotopic data collected under this program have greatly expanded the knowledge of chemical variability both in space and time...
Authors
C. D. Farrar, M.L. Sorey