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  • Springer  (5)
Document type
Publisher
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  • 1
    Electronic Resource
    Electronic Resource
    Origin and early evolution of the planetary system (1985)
    Springer
    Earth, moon and planets 33 (1985), S. 201-214 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract It is shown by linear stability analysis that a preplanetary (presatellite) disk of dust and gas with Keplerian velocity field can become unstable due to the collective self-gravity of the disk. The radial distribution of rings, which may result from this instability, is derived. These rings later on can be the formation sites for planets around the Sun and for satellites around the planets. The derived orbits are shown to be in good agreement with that of the planets and the satellites (of Jupiter, Saturn, and Uranus). Predictions and conclusions seem to be possible for the existence of three yet unknown Uranian satellites, the origin of the early Moon and the possible radial extension of the planetary system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00116796
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Formation of satellite and ring systems: Comparatve aspects (1994)
    Springer
    Earth, moon and planets 67 (1994), S. 115-129 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract There are four systems of a massive central body with a regularily structured satellite system in the Solar system: the planetary system and the satellite systems of Jupiter, Saturn and Uranus. Comparable structures in these four systems can be understood as indications for comparable processes of origin and formation. It is the aim of this paper to describe comparable properties, and to discuss possible physical processes in pre-satellite disks which can be the cause for this comparability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00613297
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Electric fields in the solar atmosphere (1977)
    Springer
    Solar physics 54 (1977), S. 151-153 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The gross-structure of the force-free currents in the solar atmosphere and their possible dynamics have been discussed as caused by quasi short-circuited electric fields, generated by the motion of the solar magnetic features.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00146431
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Book reviews (1993)
    Springer
    Pure and applied geophysics 140 (1993), S. 139-177 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00876877
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Large-scale electric fields and currents and related geomagnetic variations in the quiet plasmasphere (1980)
    Springer
    Space science reviews 26 (1980), S. 391-446 
    Details
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract At the end of the sixties it became obvious that two-dimensional dynamo models can explain nearly all facts, which had been found morphologically for mean annual Sq-fields. During the recent decade new or improved methods to measure electric fields (e.g. incoherent scatter facilities) and to investigate great data files have been developed. New informations received with these methods about the existence of regular variations of the Sq-field in dependence on season and universal time and about the electric field have been summarized in Section 2. All attempts to describe also these variations with a two-dimensional dynamo model did not lead to any success, but showed a strong theoretical over-estimation of the asymmetries. Therefore, it must be concluded that three-dimensional plasmaspheric current systems, taking into consideration the coupling between both hemispheres along the high-conducting magnetic field lines, are needed in order to explain the regular variations of the Sq -field. The basic equations for two- and three-dimensional dynamo models, different methods for the solution of these equations and the resulting models from different authors are compiled and discussed (Section 3). Based on all morphological and theoretical results a plasmaspheric-ionospheric current system has been constructed and some properties of the plasmaspheric field-aligned current distribution, have been derived.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00217388
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    Paper (German National Licenses)
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