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  • Other Sources  (15)
  • SPACE SCIENCES  (9)
  • GEOPHYSICS  (5)
  • LUNAR AND PLANETARY EXPLORATION  (1)
  • Chemical Engineering
  • 2005-2009
  • 1990-1994
  • 1970-1974  (15)
  • 1972  (15)
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  • 2005-2009
  • 1990-1994
  • 1970-1974  (15)
Year
  • 1
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    Comments on models of the Jovian radiation belts (1972)
    In:  CASI
    Details
    Publication Date: 2006-04-23
    Description: The proposed model for Jupiter radiation belts is considered. It is compared to alternative nominal models. Their disadvantages are discussed.
    Keywords: SPACE SCIENCES
    Type: JPL Proc. of the Jupiter Radiation Belt Workshop; p 517-525
    Format: text
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  • 2
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    The Celescope catalog of ultraviolet observations (1972)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Data obtained from approximately 7500 ultraviolet television pictures are used to compile a celescope catalog of ultraviolet observations. This catalog lists the magnitude as observed in each of celescope's four ultraviolet color bands, the standard deviations of the observed ultraviolet magnitudes, positions, identifications, and ground based magnitudes, colors, and spectral types for approximately 5000 stars.
    Keywords: SPACE SCIENCES
    Type: NASA, Washington The Sci. Results from the Orbiting Astron. Obs. (OAO-2) e; p 321-345
    Format: application/pdf
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  • 3
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    Stellar ultraviolet colors and interstellar extinction (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A sample of celescope results is studied. Most of the sample stars belong to the Orion and Vela regions. Stars with visual excess E(B-V) less than 0.05 are selected in order to derive relationships of intrinsic color index versus spectral type. The resulting intrinsic color-color relations are compared with existing blanketed and unblanketed model calculations. Finally, the preceding intrinsic relations are utilized to derive some results on interstellar extinction. Owing to the rather large scatter in the celescope data, the Vela stars give the more significant results because their visible excess E(B-V) is, in general, larger than that for the Orion stars.
    Keywords: SPACE SCIENCES
    Type: NASA, Washington The Sci. Results from the Orbiting Astron. Obs. (OAO-2) te; p 159-173
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  • 4
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    Ultraviolet television data from the Orbiting Astronomical Observatory. 1: Instrumentation and analysis techniques for the celescope experiment (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The celescope instrumentation and data analysis system is described, the major problems encountered during orbital operation are summerized, and a few major problems that were anticipated but did not materialize are listed.
    Keywords: SPACE SCIENCES
    Type: NASA, Washington The Sci. Results from the Orbiting Astron. Obs. (OAO-2) ate; p 1-22
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  • 5
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    Two successful geomagnetic-field-line tracing experiments. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Two field-line tracing experiments were conducted on an L = 1.26 magnetic flux tube over Kauai, Hawaii. Barium vapor was created by the detonation of a highly explosive shaped charge aligned with the geomagnetic field at a 467-km altitude. Barium ions traveled along the field line to the conjugate ionosphere in a tube 3 to 5 km in diameter, producing a visible streak along the entire 6900-km path length. Electric fields perpendicular to the magnetic field caused the ions to drift away from the true conjugate during transit, but extrapolation from subsequent ion drift rates allowed the conjugate to be identified and compared with several field models. Differing ion drift rates and directions at the conjugate points indicated that the electric field is not transferred unattenuated along field lines.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 77; June 1
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  • 6
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    Observations of fast auroral waves. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Results of simultaneous observation of a fast wave event from the Ester Dome Observatory (EDO) near College, Alaska, the Poker Flat Rocket Launching Facility (PKR), and Fort Yukon, Alaska (FYU). The display occurred on Mar. 27, 1971, and the general morphology is described and discussed. It is suggested that fast auroral waves occur when a preceding substorm has enhanced the particle population in the region of the magnetosphere near L = 6 in the midnight sector; then transverse hydromagnetic waves, associated with the onset of further local substorm activity, become visible through their action on this enhanced particle population as they propagate inwards in the equatorial region.
    Keywords: GEOPHYSICS
    Type: Planetary and Space Science; 20; Mar. 197
    Format: text
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  • 7
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    Planetary observations at millimeter wavelengths (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Observations of the Sun, Moon, Mercury, Venus, Mars, Jupiter, and Saturn were made at 3.1 mm and 8.6 mm wavelengths with a 16-foot radio telescope between March and August, 1971. Absolute brightness temperature data are given. All errors are one standard deviation and include uncertainties in antenna gain calibration. The solar and lunar temperatures are in excellent agreement with published observations. The planetary measurements at 3.1 mm are consistently higher than previous results. The implications of higher temperatures with respect to existing atmospheric and surface models are discussed.
    Keywords: SPACE SCIENCES
    Type: NASA-CR-125849 , NGL-006-72-1
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  • 8
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    Argon-40-argon-39 dating of Apollo sample 15555. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: An age of 3.33 (plus or minus 0.05) b.y. was obtained for Apollo 15 sample 15555 by argon-40-argon-39 dating. The age of rock 15555, a basalt from the rim of Hadley Rille, establishes an upper limit to the age of the rille. The basalt flows filling the Hadley Rille section of the Imbrium basin postdate the formation of the basin - as measured by the Apollo 14 samples of the Fra Mauro formation - by at least 500 m.y. Therefore, the mare basalts cannot be simple impact melts but rather must result from some igneous activity on the moon.
    Keywords: SPACE SCIENCES
    Type: Science; 175; Jan. 28
    Format: text
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  • 9
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    Effects of atmospheric aerosols on scattering reflected visible light from earth resource features (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The vertical variations in atmospheric light attenuation under ambient conditions were identified, and a method through which aerial photographs of earth features might be corrected to yield quantitative information about the actual features was provided. A theoretical equation was developed based on the Bouguer-Lambert extinction law and basic photographic theory.
    Keywords: GEOPHYSICS
    Type: NASA-CR-139382
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  • 10
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    Ground pattern analysis in the Great Plains (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The author has identified the following significant results. During preliminary analysis of the ERTS-1 RBV band-2 images it was possible to detect many geologic features and to delineate several geologic formation boundaries. Also, the spatial frequency characteristics of some different geologic formations are distinguishable from each other. At the present time there is not enough data to provide any statistical evaluation of these differences, but it is hoped that more quantitative results will be produced within the next few months. Multispectral analysis will begin when the retrospective order for the other spectral bands of the first images is received. Since many geologic formation boundaries are visible on the single band that has been analyzed so far, even greater visibility is expected with the spectral information available in the additional bands.
    Keywords: GEOPHYSICS
    Type: E72-10122 , NASA-CR-128176
    Format: application/pdf
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