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  • 1
    Electronic Resource
    Electronic Resource
    Do CRISTA Experiment/Campaign Data Represent a Typical Situation or Not? (1997)
    Springer
    Studia geophysica et geodaetica 41 (1997), S. 171-180 
    Details
    ISSN: 1573-1626
    Keywords: CRISTA ; lower ionosphere ; radio wave absorption
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences , Physics
    Notes: Abstract Data from four A3 radio wave circuits in central Europe are used to analyse the representativeness of the ionization and gravity wave activity pattern in the lower ionosphere (∼85 – 100 km) in the CRISTA experiment interval (3 – 12 November 1994) for the given conditions. It has been found that the CRISTA experiment interval was run under conditions, which are highly representative both of October – November 1994 and autumn, low-moderate solar activity, the descending phase of solar cycle conditions, i.e. CRISTA measurements may be considered to provide values identical with, or close to climatological values (at least for central Europe, h = 85 – 100 km).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1023388628983
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  • 2
    Electronic Resource
    Electronic Resource
    Do Solar Flares Affect Total Ozone? (1998)
    Springer
    Studia geophysica et geodaetica 42 (1998), S. 533-539 
    Details
    ISSN: 1573-1626
    Keywords: total ozone ; lower ionosphere ; solar flares
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences , Physics
    Notes: Abstract An analysis of total ozone from Hradec Králové (50.25°N, 15.21°E) and of radio wave absorption in the lower ionosphere at 1539 kHz (reflection point 50.3°N, 11.8°E) shows that there is no detectable effect of strong solar flares in total ozone, no correlation between total ozone and absorption on a day-to-day time scale, and that strong solar flares do not affect this correlation. Thus the long-term correlation of monthly average values (Alberca et al., 1996) is not reproduced on a day-to-day time scale, and the effects of strong geomagnetic storms in total ozone (Laštovička et al., 1992; Mlch and Laštovička, 1996) have no counterpart in effects of strong solar flares.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1023353306498
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    Paper (German National Licenses)
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