Publications
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Hazards of geomagnetic storms Hazards of geomagnetic storms
Geomagnetic storms are large and sometimes rapid fluctuations in the Earth's magnetic field that are related to disturbances on the Sun's surface. Although it is not widely recognized, these transient magnetic disturbances can be a significant hazard to people and property. Many of us know that the intensity of the auroral lights increases during magnetic storms, but few people realize...
Authors
D.C. Herzog
Evaluation of models proposed for the 1991 revision of the International Geomagnetic Reference Field Evaluation of models proposed for the 1991 revision of the International Geomagnetic Reference Field
The 1991 revision of the International Geomagnetic Reference Field (IGRF) comprises a definitive main-field model for 1985.0, amain-field model for 1990.0, and a forecast secular-variation model for the period 1990-1995. The five 1985.0 main-field models and five 1990.0 main-field models that were proposed have been evaluated by comparing them with one another, with magnetic observatory...
Authors
N.W. Peddie
Quiet geomagnetic field representation for all days and latitudes Quiet geomagnetic field representation for all days and latitudes
This paper describes a technique for obtaining the quiet-time geomagnetic field variation expected for all days of the year and distribution of latitudes from a limited set of selected quiet days within a year at a discrete set of locations. We used a data set of observatories operated by Indian and USSR scientists in 1976 and 1977 near 75°E longitude as illustration. Our method relies...
Authors
W.H. Campbell, E.R. Schiffmacher, B.R. Arora
Analysis of geomagnetic secular variation during 1980-1985 and 1985- 1990, and geomagnetic models proposed for the 1991 revision of the International Geomagnetic Reference Field Analysis of geomagnetic secular variation during 1980-1985 and 1985- 1990, and geomagnetic models proposed for the 1991 revision of the International Geomagnetic Reference Field
The secular variation of the main geomagnetic field during the periods 1980-1985 and 1985-1990 was analyzed in terms of spherical harmonics up to the eighth degree and order. Data from worldwide magnetic observatories and the Navy's Project MAGNET aerial surveys were used. The resulting pair of secular-variation models was used to update the Definitive Geomagnetic Reference Field (DGRF)...
Authors
N.W. Peddie
The Loma Prieta, California, earthquake of October, 17, 1989: Marina District The Loma Prieta, California, earthquake of October, 17, 1989: Marina District
During the earthquake, a total land area of about 4,300 km2 was shaken with seismic intensities that can cause significant damage to structures. The area of the Marina District of San Francisco is only 4.0 km2--less than 0.1 percent of the area most strongly affected by the earthquake--but its significance with respect to engineering, seismology, and planning far outstrips its proportion...
Authors
Thomas D. O'Rourke, M. G. Bonilla, John Boatwright, Linda C. Seekins, Thomas E. Fumal, Hsi-Ping Liu, Charles S. Mueller, Richard E. Warrick, Robert E. Westerlund, Eugene D. Sembera, Leif Wennerberg, Harry E. Stewart, Ashraf K. Hussein, J. #NAME? Bardet, M. Kapuskar, G. R. Martin, J. Proubet, H. T. Taylor, J.T. Cameron, S. Vahdani, H. Yap, Jonathan W. Pease, Stephen K. Harris, John A. Egan, Charles R. Scawthorn, Keith A. Porter, Frank T. Blackburn
Supplementary pages to the disk of: The directory of the World Landslide Inventory Supplementary pages to the disk of: The directory of the World Landslide Inventory
No abstract available.
Authors
William M. Brown, David M. Cruden, Judith S. Denison
Preliminary geomagnetic data, College Observatory, Fairbanks Preliminary geomagnetic data, College Observatory, Fairbanks
No abstract available.
Authors
Water Resources Division U.S. Geological Survey
Faulting, structural damage, liquefaction, and landslides from the Luzon, Philippines earthquake of July 16, 1990; slide set and bibliography Faulting, structural damage, liquefaction, and landslides from the Luzon, Philippines earthquake of July 16, 1990; slide set and bibliography
No abstract available.
Authors
Gerald F. Wieczorek, Christopher G. Newhall, Leif G. Wennerberg
Volume and shape of the active and inactive parts of the Slumgullion landslide, Hinsdale County, Colorado Volume and shape of the active and inactive parts of the Slumgullion landslide, Hinsdale County, Colorado
No abstract available.
Authors
Mario Parise, Raffaela Guzzi
The world landslide problem The world landslide problem
Thousands of people may be killed by landslides each year and property damage may be in the tens of billions of dollars, but the techniques for recognizing and coping with landslides are well developed. Landslides are generally more manageable and predictable than earthquakes, volcanic eruptions, and some storms, but only a few countries have taken advantage of this knowledge to reduce...
Authors
E. E. Brabb
Quaternary history of some southern and central Rocky Mountain basins Quaternary history of some southern and central Rocky Mountain basins
This chapter summarizes the current state of late Cenozoic stratigraphic knowledge in some Rocky Mountain basins (here defined as the structurally low portions of major drainage basins) that have been studied in detail since Scott’s (1965) summary on the nonglacial history of the southern and middle Rocky Mountains. The Quaternary history of few of these basins has been studied as...
Authors
Marith C. Reheis, Robert C. Palmquist, S.S. Agard, Cheryl Jaworowski, Brainerd Mears, Richard F. Madole, Alan R. Nelson, Gerald Osborn
Preliminary map of landslide features and coseismic fissures in the Summit Road area of the Santa Cruz Mountains triggered by the Loma Prieta earthquake of October 17, 1989 Preliminary map of landslide features and coseismic fissures in the Summit Road area of the Santa Cruz Mountains triggered by the Loma Prieta earthquake of October 17, 1989
No abstract available.
Authors
T. E. Spittler, E. L. Harp