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  • GEOPHYSICS  (2,227)
  • 1975-1979  (2,227)
  • 1
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    Overview - Electric fields (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The electric fields session is designed to review progress in observation, theory, and modeling of magnetospheric electric fields, and to expose important new results. The present report comments on the state and prospects of electric field research, with particular emphasis on relevance to quantitative modeling of the magnetospheric processes. Attention is given to underlying theories and models. Modeling philosophy is discussed relative to explanatory models and representative models. Modeling of magnetospheric electric fields, while in its infancy, is developing rapidly on many fronts employing a variety of approaches. The general topic of magnetospheric electric fields is becoming of prime importance in understanding space plasmas.
    Keywords: GEOPHYSICS
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    NASA TECHNICAL REPORTS
  • 2
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    Lightning apparent source of environmentally important gases (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Keywords: GEOPHYSICS
    Type: NASA-NEWS-RELEASE-79-131 , P79-10129
    Format: application/pdf
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  • 3
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    Application of space technology to crustal dynamics and earthquake research (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: In cooperation with other Federal government agencies, and the governments of other countries, NASA is undertaking a program of research in geodynamics. The present program activities and plans for extension of these activities in the time period 1979-1985 are described. The program includes operation of observatories for laser ranging to the Moon and to artificial satellites, and radio observatories for very long baseline microwave interferometry (VLBI). These observatories are used to measure polar motion, earth rotation, and tectonic plate movement, and serve as base stations for mobile facilities. The mobile laser ranging and VLBI facilities are used to measure crustal deformation in tectonically active areas.
    Keywords: GEOPHYSICS
    Type: NASA-TP-1464
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  • 4
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    Lightning as an indication of storm severity (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: There is a substantial case for the theory that cloud electrification is related primarily to strong convection and the sizeable relative air motion that it implies; therefore, the electrification and subsequent discharge rates can be related to the air motion environment of thunderstorms. The isoceraunic contour map used by the WMO for observing and measuring thunderstorm occurrence contains no information on flash rates, flash density, flash relationship to storm severity, or flash variation with meteorological environment. A constant-view geosynchronous lightning mapper would permit simultaneous studies of the lightning discharge patterns and the meteorological environment of storms, thus establishing whether or not there is a reliable enough relationship to use the observed flash rates and characteristics as supplemental guidance for storm forecast refinement.
    Keywords: GEOPHYSICS
    Type: NASA. Marshall Space Flight Center Proc.: Workshop on the Need for Lightning Observations from Space; p 153-155
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  • 5
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    The effect of errors in the assignment of the transmission functions on the accuracy of the thermal sounding of the atmosphere (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: In order to test the error of calculation in assumed values of the transmission function for Soviet and American radiometers sounding the atmosphere thermally from orbiting satellites, the assumptions of the transmission calculation is varied with respect to atmospheric CO2 content, transmission frequency, and atmospheric absorption. The error arising from variations of the assumptions from the standard basic model is calculated.
    Keywords: GEOPHYSICS
    Type: NASA-TM-75654 , Conf. of the Soviet-Am. Working Group on Space Meteorol.; Nov 10, 1976 - Nov 22, 1976; Moscow
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  • 6
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    Method for the rapid temperature correction of a transmission in an inhomogeneous atmosphere (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The value of the transmission function in a heterogeneous atmosphere is determined by iterative correction of values in particular layers. The iterative equation and a set of absolute values of errors is presented in two tables.
    Keywords: GEOPHYSICS
    Type: NASA-TM-75649 , Conf. of the Soviet-Am. Working Group on Space Meteorol.; Nov 10, 1976 - Nov 22, 1976; Moscow
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  • 7
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    On the acceleration of the auroral plasma of the Earth due to conic instability (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The role of electrostatic conic instability in the diffusion of spilled particles and the acceleration of the auroral plasma of the Earth are numerically investigated by means of quasi-linear equations. Linear increments to the conic instability under magnetospheric conditions are introduced. The quasi-linear equation is averaged along tubes of force taking into account the drift across the magnetic field lines. It is shown that the existence of a conic instability leads to small spills and isotropic distribution of particles, but is also accompanied by significant acceleration of electrons.
    Keywords: GEOPHYSICS
    Type: NASA-TM-75638 , PR-430
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  • 8
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    Multicomponent diffusion and energy characteristics of partially ionized plasma in the ionosphere of a planet (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The problem of energy and multicomponent ambipolar diffusion of plasma in the lower ionosphere of a planet with a weak magnetic field is considered.
    Keywords: GEOPHYSICS
    Type: NASA-TM-75409 , PREPRINT-123
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  • 9
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    The magnetic anomaly of the Ivreazone (1979)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A magnetic field survey was made in the Ivreazone in 1969/70. The results were: significant anomaly of the vertical intensity is found. It follows the basic main part of the Ivrea-Verbano zone and continues to the south. The width of the anomaly is about 10 km, the maximum measures about +800 gamma. The model interpretation shows that possibly the anomaly belongs to an amphibolitic body, which in connection with the Ivrea-body was found by deep seismic sounding. Therefore, the magnetic anomaly provides further evidence for the conception that the Ivrea-body has to be regarded as a chip of earthmantle material pushed upward by tectonic processes.
    Keywords: GEOPHYSICS
    Type: NASA-TM-75425
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  • 10
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    Soviet ship arrives next month for joint rocket tests (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Keywords: GEOPHYSICS
    Type: NASA-NEWS-RELEASE-78-71 , P78-10072
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