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 5374, results 134326 - 134350

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Earthquakes; January-February 1982
W. J. Person
1982, Earthquake Information Bulletin (USGS) (14) 147-151
A number of significant earthquakes occurred in many parts of the world during the first month of this year. The first major earthquake (magnitude 7.0-7.9) of the year was on January 11 in the Philippine Islands. the second major quake, on January 18 in the Aegean Sea, was followed by...
Earthquakes; May-June 1982
W. J. Person
1982, Earthquake Information Bulletin (USGS) (14) 222-225
There were four major earthquakes (7.0-7.9) during this reporting period: two struck in Mexico, one in El Salvador, and one in teh Kuril Islands. Mexico, El Salvador, and China experienced fatalities from earthquakes. In the United States, a number of earthquakes occurred, but only one, in Utah caused some minor damage. ...
Earthquakes, November-December 1981
W. J. Person
1982, Earthquake Information Bulletin (USGS) (14) 115-118
The last 2 months of the year were somewhat active, seismically speaking, including three major earthquakes (7.0-7.9) during the month of December. The first of the major quakes was in the Aegean Sea on December 19, and the other two were in the South Pacific in the Kermadee Islands on...
Earthquakes, September-October 1981
W. J. Person
1982, Earthquake Information Bulletin (USGS) (14) 67-70
There were three major earthquakes (7.0-7.9) during this reporting period. The first and largest was a magnitude 7.7 on September 1 in the Samoa Islands region in the South Pacific. A magnitude 7.2 occurred on October 16 off the coast of central Chile. The third, on October 25 in Michoacan,...
Evaluating the crop coefficient using spectral reflectance
J. L. Heilman, W. E. Heilman, Donald G. Moore
1982, Agronomy Journal (74) 967-971
A field study was conducted in four differentially irrigated plots of alfalfa (Medicago sativa L.) planted in Shiprock sandy loam (coarseloamy, mixed, mesic Typic Haplargid) to assess spectral reflectance for estimating the crop coefficient (Kc), defined here as the ratio of actual to potential evapotranspiration (ET). A bidirectional reflectance factor was...
Digital image film generation: from the photoscientist's perspective
John E. Boyd
1982, Journal of Applied Photographic Engineering (8) 15-22
The technical sophistication of photoelectronic transducers, integrated circuits, and laser-beam film recorders has made digital imagery an alternative to traditional analog imagery for remote sensing. Because a digital image is stored in discrete digital values, image enhancement is possible before the data are converted to a photographic image. To create...
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...
Landsat classification accuracy assessment procedures
R. R. Mead, John Szajgin
1982, Photogrammetric Engineering and Remote Sensing (48) 139-141
A working conference was held in Sioux Falls, South Dakota, 12-14 November, 1980 dealing with Landsat classification Accuracy Assessment Procedures. Thirteen formal presentations were made on three general topics: (1) sampling procedures, (2) statistical analysis techniques, and (3) examples of projects which included accuracy assessment and the associated costs, logistical...
Assessing mesquite-grass vegetation condition from Landsat
Kirk C. McDaniel, Robert H. Haas
1982, Photogrammetric Engineering and Remote Sensing (48) 441-450
Landsat multispectral scanner (MSS) band values, band ratios, and vegetation index models were compared with selected rangeland vegetation parameters collected at six test sites within the honey mesquitellotebushlmixed grass association in north-central Texas. The comparisons at four dates showed that two vegetation index models, TV16 and GVI, are highly correlated...
Use of Landsat data to evaluate lesser prairie chicken habitats in western Oklahoma
Richard W. Cannon, Fritz L. Knopf, Lawrence R. Pettinger
1982, Photogrammetric Engineering and Remote Sensing (46) 915-922
Landsat digital data were used to evaluate lesser prairie chicken (Tympanuchus pallidicinctus) habitats in western Oklahoma. Data for 7 (4,144 ha) study areas, 4 in shinnery oak (Quercus havardii), and 3 in sand sagebrush (Artemisia filifolia) rangeland, were analyzed using the Interactive Digital Image Manipulation System at the EROS Center....