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Chapter B. The Loma Prieta, California, Earthquake of October 17, 1989 - Highway Systems Chapter B. The Loma Prieta, California, Earthquake of October 17, 1989 - Highway Systems
This paper summarizes the impact of the Loma Prieta earthquake on highway systems. City streets, urban freeways, county roads, state routes, and the national highway system were all affected. There was damage to bridges, roads, tunnels, and other highway structures. The most serious damage occurred in the cities of San Francisco and Oakland, 60 miles from the fault rupture. The cost to...
Authors
Mark Yashinsky
Popular beach disappears underwater in huge coastal landslide — Sleeping Bear Dunes, Michigan Popular beach disappears underwater in huge coastal landslide — Sleeping Bear Dunes, Michigan
In February 1995, a 1,600-foot stretch of popular beach at Sleeping Bear Dunes National Lakeshore suddenly slid into the waters of northeastern Lake Michigan. The National Park Service (NPS) immediately requested the assistance of the U.S. Geological Survey (USGS) in evaluating the hazard at the lakeshore. To protect the public, USGS and NPS scientists are conducting studies that will...
Authors
Bruce Jaffe, Robert Kayen, Helen Gibbons, James W. Hendley, Peter H. Stauffer
The Loma Prieta, California, earthquake of October 17, 1989: Liquefaction The Loma Prieta, California, earthquake of October 17, 1989: Liquefaction
The 1989 Loma Prieta earthquake both reconfirmed the vulnerability of areas in the San Francisco-Monterey Bay region to liquefaction and provided an opportunity to test methodologies for predicting liquefaction that have been developed since the mid-1970's. This vulnerability is documented in the chapter edited by O'Rourke and by the investigators in this chapter who describe case...
Authors
Thomas L. Holzer, Jean Lou A. Chameau, G. Wayne Clough, J.D. Frost, Fernando A. M. Reyna, Robert E. Kayen, James K. Mitchell, Raymond B. Seed, Shin’ya Nishio, Maurice S. Power, John A. Egan, Scott E. Shewbridge, John deBecker, J. Richard Faris, Michael J. Bennett, Lelio H. Mejia, John D. Sims, C. D. Garvin, Roman D. Hryciw, Alan L. Kropp, Matthew Homolka, Wayne A. Charlie, Donald O. Doehring, Jeffrey P. Brislawn, Hassen Hassen, Kyle Rollins, Michael D. Mchood, Frederick J. Wentz, William R. Dupre, John C. Tinsley
Velocities of the Pine Island, Thwaites, and smaller glaciers along the Marie Byrd Land coast, West Antarctica Velocities of the Pine Island, Thwaites, and smaller glaciers along the Marie Byrd Land coast, West Antarctica
Average velocities for time intervals ranging from 1 to 15 years were measured by tracking ice-surface patterns on sequential Landsat and European Remote-sensing Satellite synthetic aperture radar images. Velocities ofThwaites Glacier range from 2.2 km a−1 above the grounding line to 3.4 km a−1 at the limit of measurements onThwaites Glacier ice tongue. The glacier increases in velocity...
Authors
Christina E. Rosanova, Baerbel K. Lucchitta, Jane G. Ferrigno
Tectonic geomorphology and paleoseismology of the Septentrional fault system, Dominican Republic Tectonic geomorphology and paleoseismology of the Septentrional fault system, Dominican Republic
No abstract available.
Authors
Paul Mann, Carol S. Prentice, G. Burr, Luis R. Pena, F. W. Taylor
The Cascadia Subduction Zone: Two contrasting models of lithospheric structure The Cascadia Subduction Zone: Two contrasting models of lithospheric structure
The Pacific margin of North America is one of the most complicated regions in the world in terms of its structure and present day geodynamic regime. The aim of this work is to develop a better understanding of lithospheric structure of the Pacific Northwest, in particular the Cascadia subduction zone of Southwest Canada and Northwest USA. The goal is to compare and contrast the...
Authors
T.V. Romanyuk, R. Blakely, Walter D. Mooney
The influence of the San Gregorio fault on the morphology of Monterey Canyon The influence of the San Gregorio fault on the morphology of Monterey Canyon
A side-scan sonar survey was conducted of Monterey Canyon and the San Gregorio fault zone, off shore of Monterey Bay. The acoustic character and morphology of the sonar images, enhanced by SeaBeam bathymetry, show the path of the San Gregorio fault zone across the shelf, upper slope, and Monterey Canyon. High backscatter linear features a few kilometers long and 100 to 200 m wide...
Authors
C.M.G. McHugh, William B. F. Ryan, S. Eittreim, Reed Donald
The age and constitution of Cerro Campanario, a mafic stratovolcano in the Andes of central Chile The age and constitution of Cerro Campanario, a mafic stratovolcano in the Andes of central Chile
Cerro Campanario, a towering landmark on the continental divide near Paso Pehuenche, is a glacially eroded remnant of a mafic stratovolcano that is much younger than previously supposed. Consisting of fairly uniform basaltic andesite, rich in olivine and plagioclase, the 10-15 km3 edifice grew rapidly near the end of the middle Pleistocene, about 150-160 ka, as indicated by 40Ar/39Ar and...
Authors
Wes Hildreth, B. Singer, E. Godoy, F. Munizaga
Surface deformation as a guide to kinematics and three-dimensional shape of slow-moving, clay-rich landslides, Honolulu, Hawaii Surface deformation as a guide to kinematics and three-dimensional shape of slow-moving, clay-rich landslides, Honolulu, Hawaii
Two slow-moving landslides in Honolulu, Hawaii, were the subject of photogrammetric measurements, field mapping, and subsurface investigation to learn whether surface observations can yield useful information consistent with results of subsurface investigation. Mapping focused on structural damage and on surface features such as scarps, shears, and toes. The x-y-z positions of photo...
Authors
R.L. Baum, J. Messerich, R. W. Fleming
CRUST 5.1: A global crustal model at 5° x 5° CRUST 5.1: A global crustal model at 5° x 5°
We present a new global model for the Earth's crust based on seismic refraction data published in the period 1948-1995 and a detailed compilation of ice and sediment thickness. An extensive compilation of seismic refraction measurements has been used to determine the crustal structure on continents and their margins. Oceanic crust is modeled with both a standard model for normal oceanic...
Authors
Walter D. Mooney, Gabi Laske, T. Guy Masters
Retreat of northern margins of George VI and Wilkins Ice Shelves, Antarctic Peninsula Retreat of northern margins of George VI and Wilkins Ice Shelves, Antarctic Peninsula
The George VI and Wilkins Ice Shelves are considered at risk of disintegration due to a regional atmospheric warming trend on the Antarctic Peninsula. Retreat of the northern margin of the George VI Ice Shelf has been observed previously, but the Wilkins Ice Shelf was thought to be stable. We investigated the positions of the northern fronts of these shelves from the literature and...
Authors
Baerbel K. Lucchitta, Christina E. Rosanova
Digital Compilation of "Preliminary Map of Landslide Deposits in Santa Cruz County, California, By Cooper-Clark and Associates, 1975": A Digital Map Database Digital Compilation of "Preliminary Map of Landslide Deposits in Santa Cruz County, California, By Cooper-Clark and Associates, 1975": A Digital Map Database
A 1:62,500-scale black-and-white map identifying some 2,000 landslides of various types in Santa Cruz County, California, has been converted to a digital-map database that can be acquired from the U.S. Geological Survey over the Internet or on magnetic tape.
Authors
Sebastian Report by Roberts, Andrew D. Barron, Earl E. Preface by Brabb, Richard J. Pike