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  • Weitere Quellen  (4.128)
  • GEOPHYSICS  (2.227)
  • ASTRONOMY  (1.188)
  • SPACE RADIATION
  • 1975-1979  (4.128)
  • 1
    facet.materialart.
    Unbekannt
    In:  Other Sources
    Publikationsdatum: 2019-08-28
    Beschreibung: 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.
    Schlagwort(e): GEOPHYSICS
    Format: text
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  • 2
    facet.materialart.
    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-08-28
    Schlagwort(e): GEOPHYSICS
    Materialart: NASA-NEWS-RELEASE-79-131 , P79-10129
    Format: application/pdf
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  • 3
    facet.materialart.
    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-08-28
    Schlagwort(e): ASTRONOMY
    Materialart: NASA-NEWS-RELEASE-79-65 , P79-10051
    Format: application/pdf
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  • 4
    facet.materialart.
    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-08-28
    Schlagwort(e): ASTRONOMY
    Materialart: NASA-NEWS-RELEASE-79-18 , P79-10018
    Format: application/pdf
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  • 5
    facet.materialart.
    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-08-28
    Schlagwort(e): ASTRONOMY
    Materialart: NASA-NEWS-RELEASE-79-36 , P79-10036
    Format: application/pdf
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  • 6
    facet.materialart.
    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-08-28
    Beschreibung: 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.
    Schlagwort(e): GEOPHYSICS
    Materialart: NASA-TP-1464
    Format: application/pdf
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  • 7
    facet.materialart.
    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-08-28
    Beschreibung: 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.
    Schlagwort(e): GEOPHYSICS
    Materialart: NASA. Marshall Space Flight Center Proc.: Workshop on the Need for Lightning Observations from Space; p 153-155
    Format: text
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  • 8
    Publikationsdatum: 2019-08-28
    Beschreibung: Secondary heating and ionization of the intergalactic gas at redshifts z approximately 10-30 could lead to the large optical depth of the Universe for Thomson scattering and could smooth the primordial fluctuations formed at z approximately 1500. It is shown that the gas motions connected with the large scale density perturbations at z approximately 10-15 must lead to the generation of secondary fluctuations of microwave background. The contribution of the rich clusters of galaxies and young galaxies to the fluctuations of microwave background is also estimated.
    Schlagwort(e): SPACE RADIATION
    Materialart: NASA-TM-75619
    Format: application/pdf
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  • 9
    facet.materialart.
    Unbekannt
    In:  CASI
    Publikationsdatum: 2019-08-28
    Beschreibung: The International Ultraviolet Explorer (IUE), an Explorer class ultraviolet astronomy mission, is an international cooperative program between the United States, the United Kingdom (UK), and the European Space Agency (ESA) which provides for a single launch into geosynchronous orbit to conduct spectral distribution studies of celestial and solar system ultraviolet sources. The spacecraft and scientific instruments were designed and fabricated at the Goddard Space Flight Center. The spectrograph camera was provided by the UK; ESA provided the solar array as well as the European ground station. The IUE observatory system was designed to functionally resemble a ground-based optical observatory at which guest observers could execute observing programs in real time. Observatory performance substantially exceeded design and mission objectives. The secondary mission objectives were also met.
    Schlagwort(e): ASTRONOMY
    Materialart: NASA-TM-80471 , S-868-78-03 , REPT-2
    Format: application/pdf
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  • 10
    Publikationsdatum: 2019-08-28
    Beschreibung: 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.
    Schlagwort(e): GEOPHYSICS
    Materialart: NASA-TM-75654 , Conf. of the Soviet-Am. Working Group on Space Meteorol.; Nov 10, 1976 - Nov 22, 1976; Moscow
    Format: application/pdf
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