Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

184769 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 5381, results 134501 - 134525

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
International geomagnetic reference field 1980: a report by IAGA Division I working group.
N.W. Peddie
1982, Geophysical Journal of the Royal Astronomical Society (68) 265-268
Describes the recommendations of the working group, which suggested additions to IGRF because of the cumulative effect of the inevitable uncertainties in the secular variation models which had led to unacceptable inaccuracies in the IGRF by the late 1970's. The recommendations were accepted by the International Association of Geomagnetism and...
Tilt measurements at Long Valley caldera, California, May-August 1982
Daniel Dzurisin, K. V. Cashman, D. A. Johnston, Arthur G. Sylvester
1982, Open-File Report 82-893
The Mammoth Lakes area in east-central California has experienced unusual seismicity and ground deformation since 1978, highlighted by four M>6 earthquakes in May 1980 and by the discovery soon thereafter of a broad uplift within Long Valley caldera. Recurrent seismic swarms during June 1980-May 1982 raised concern over the possibility...
The role of the Organization of American States in the development of seismology in Latin America
A. Quesada
1982, Earthquake Information Bulletin (USGS) (14) 7-9
Seismological studies in Latin America were initiated at the beginning of the 20th century, when the first seismological stations were deployed by certain scientific associations. These efforts provided an incentive to the professional community for further activites. Until this date, the only seismic records that existed were historical accounts of...
Jack London and the San Francisco earthquake
J.S. Sachs
1982, Earthquake Information Bulletin (USGS) (14) 94-97
After it was over, it seemed to many, and especially to eyewitnesses like Jack London, that the earthquake and fire had devastated San Francisco. However people were confident that, like the phoeniz, San Francisco would rise from the ashes and regain her palce as the "Imperial City of the West." ...
Fission-track ages from the Precambrian of Shropshire
C. W. Naeser, P. Toghill, R. J. Ross Jr.
1982, Geological Magazine (119) 213-214
Four samples of Longmyndian and Uriconian strata from S of Shrewsbury, England have been processed for apatite and/or zircon fission-track ages. The resultant ages illustrate how depth of burial may affect fission-track ages. The analytical procedures followed were as described in Naeser (1979).-from Authors...
Earthquake engineering research program in Chile
G. R. Saragoni
1982, Earthquake Information Bulletin (USGS) (14) 22-25
Earthquake engineering research in Chile has been carried out for more than 30 years. Systematic research is done at the university of Chile in Santiago. Other universities such as the Catholic University, university of Concepcion, and the Federico Santa Maria Technical University have begun to teach and conduct research in...
Stream-grade variation and riparian-forest ecology along Passage Creek, Virginia
Cliff R. Hupp
1982, Bulletin of the Torrey Botanical Club (109) 488-499
Passage Creek, in northwestern Virginia, flows on relatively nonresistant shales, then cuts through a gorge underlain by resistant sandstone In the gorge, the stream gradient steepens, the size of bed material increases, a braided channel forms, and riparian-forest composition and growth form changes relative to areas outside the gorge Effects...
Analytical electron microscopy in mineralogy; exsolved phases in pyroxenes
Gordon L. Nord Jr.
1982, Ultramicroscopy (8) 109-119
Analytical scanning transmission electron microscopy has been successfully used to characterize the structure and composition of lamellar exsolution products in pyroxenes. At operating voltages of 100 and 200 keV, microanalytical techniques of x-ray energy analysis, convergent-beam electron diffraction, and lattice imaging have been used to chemically and...
Notes on sedimentation activities calendar year 1981
U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation
1982, Report
This report is a digest of information furnished by those Federal agencies conducting sedimentation investigations. It includes descriptions of work in progress or planned, important findings, new methods, new publications, laboratory and other research activities, and other pertinent information. The material has been organized by major drainage regions in the...
Evaluation of 0.46- to 2.36-mu m multispectral scanner images of the east Tintic mining district, Utah, for mapping hydrothermally altered rocks
L. C. Rowan, A.B. Kahle
1982, Economic Geology (77) 441-452
Airborne multispectral scanner images recorded in the 0.46- to 2.36-mu m region for the East Tintic mining district, Utah, were evaluated to determine their usefulness for distinguishing six types of hydrothermally altered rocks from a wide range of sedimentary and igneous rock types. Limestone, dolomite, and argillaceous rocks were of...