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  • Articles  (8,707)
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  • Articles  (8,707)
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  • 1960-1964  (8,707)
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  • 1
    Electronic Resource
    Electronic Resource
    Motion in a non-homogeneous elastic medium by a twisting impulsive force on the surface of a spherical cavity (1961)
    Springer
    Pure and applied geophysics 49 (1961), S. 36-42 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary In this paper, the propagation of disturbance due to a twisting impulsive force on the surface of a spherical cavity, in a non-homogeneous isotropic medium, in which the rigidity and density vary inversely as the distance from the centre is investigated. Numerical solution is done by the method suggested byKromm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01992142
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  • 2
    Electronic Resource
    Electronic Resource
    Zur Herdbestimmung von Erdbeben (1961)
    Springer
    Pure and applied geophysics 49 (1961), S. 43-60 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Summary In the first part a further simple method is given for the determination of the epicentre of near earthquake. [Equ. (6)–(7)]. For distances or accuracies, by which the earth curvature is already to take in calculation, correction members are given in part 2 and 3. [Equ. (6a)]. For larger distances, resp. greater accuracies we can favourably apply spherical relations [part 4, Equ. (1c)], of which we can gain by series development further members. It will be often advantageous for adjustment to calculate the geographical coordinates of the epicentre [part 5: Equ. (18)–(24)].
    Notes: Zusammenfassung Es wird im ersten Teil ein weiteres einfaches Verfahren zur ebenen Bestimmung der Epizentren von nahen Erdbeben angegeben [Gleichungen (6)–(7)]. Für Entfernungen, oder Genauigkeiten, bei denen die Erdkrümmung schon zu berücksichtigen ist, werden im zweiten und dritten Teil Korrektionsglieder entwickelt: Gleichung (6a). Bei noch grösseren Entfernungen, bzw. Genauigkeitsforderungen geht man vorteilhaft aus sphärischen Beziehungen aus [Vierter Teil: Gleichungen (lc)], aus deren Reihenentwicklung noch weitere Glieder berücksichtigt werden können. Für die Ausgleichung wird es aber meist vorteilhafter sein, die geographischen Koordinaten des Epizentrums zu berechnen [Fünfter Teil: Gleichungen (18–24)].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01992143
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  • 3
    Electronic Resource
    Electronic Resource
    Die Interpretation von seismischen Refraktionsmessungen im Grenzfallc 0=0 (1961)
    Springer
    Pure and applied geophysics 49 (1961), S. 119-128 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Summary In pursuance of «Die Laufzeifunktion und ihre Interpretation in der Refraktionsseismik des einachsig inhomogenen Körpers» (4) the special interpretation problem withc o=0 is generally treated.
    Notes: Zusammenfassung Es wird im Anschluss an «Die Laufzeifunktion und ihre Interpretation in der Refraktionsseismik des einachsig inhomogenen Körpers» (4) die Interpretation von seismischen Refraktionsmessungen im Grenzfallc o=0 eingehend behandelt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01992147
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  • 4
    Electronic Resource
    Electronic Resource
    Vorhersage von Niveauänderungen der 500 mb Fläche mittels numerischer Integration der Wellengleichung (1961)
    Springer
    Pure and applied geophysics 49 (1961), S. 159-166 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Summary The attempt is made to forecast height changes of the 500 mb contours by a numerical integration of the twodimensional homogenous wave equation provided the phase velocity is known. The result is compared with a forecast obtained by graphical integration of the barotropic vorticity equation. In the case investigated both methods show almost the same accuracy with respect to the contour changes with have actually occured. Appearently in some case it is possible to discribe height variations of an isobaric surface with the aid of the linear twodimensional wave equation with the same success as using the nonlinear vorticity equation.
    Notes: Zusammenfassung Es wurde versucht mittels der numerischen Integration der zweidimensionalen homogenen Wellengleichung bei bekannter Phasengeschwindigkeit Niveauänderungen im 500 mb Niveau vorherzusagen. Gleichzeitig wurde das Ergebnis mit der prognostizierten Niveauänderung, die mittels graphischer Integration der barotropen Wirbelgleichung gewonnen wurde, verglichen. Dabei hat es sich gezeigt, dass die Übereinstimmung der beiden vorhergesagten Änderungen sowohl untereinander, als auch mit der tatsächlich eingetroffenen Änderung recht gut ist. Offenbar kann man in einfachen Fällen die physikalischen Vorgänge in der Atmosphäre mittels der homogenen Wellengleichung beschreiben.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01992150
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  • 5
    Electronic Resource
    Electronic Resource
    Ionization equilibrium in aerosols (1961)
    Springer
    Pure and applied geophysics 50 (1961), S. 148-154 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Zusammenfassung Theoretische und experimentelle Untersuchungen wurden durchgeführt zur Ermittlung der Gleichgewichtsverteilung der elektrischen Ladungen der Aitkenkerne. Die Theorie besagt, daß der Anteil der ungeladenen Teilchen seinen Gleichgewichtszustand nach einer Exponentialfunktion einnimmt, mit einem angenäherten Wert der Halbwertszeit von 0.693Z/4q. Experimente ergaben gute Übereinstimmung mit der Theorie. Die Wirksamkeit einer Polonium-210 alpha-Quelle als Erzeuger des Ionisationsgleichgewichtes wurde geprüft und bestätigt. Die Anwendung dieser Methoden zur Bestimmung der Teilchengröße und zur Erklärung anderer Beobachtungen in der freien Atmosphäre werden diskutiert.
    Notes: Summary Theoretical and experimental investigations were made on the time taken to achieve equilibrium charge distribution on Aitken nuclei. Theory indicates that the fraction of nuclei uncharged approaches its equilibrium value exponentially, with an approximate half time value of 0.693Z/4q and experiment gave good agreement with theory. The efficiency of a polonium-210 alpha ray source in producing ionization equilibrium in aerosols was examined and confirmed. The application of the methods described to the determination of the size of nuclei and to other observations in the free atmosphere are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02000638
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  • 6
    Electronic Resource
    Electronic Resource
    Ein exakter Seismograph (1961)
    Springer
    Pure and applied geophysics 48 (1961), S. 35-39 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Summary An exact seismograph is described.
    Notes: Zusammenfassung Es wird ein exakter Seismograph beschrieben.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01992366
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  • 7
    Electronic Resource
    Electronic Resource
    On the propagation of Rayleigh waves in three dimensions in alluvial soils (1961)
    Springer
    Pure and applied geophysics 48 (1961), S. 16-22 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The propagation of Rayleigh waves in three dimensions in alluvial soils which do not behave like ordinary isotropic elastic solids have been discussed in this paper. The frequency equation has been solved for different soil constants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01992363
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  • 8
    Electronic Resource
    Electronic Resource
    On computation of second derivatives from gravity data (1961)
    Springer
    Pure and applied geophysics 48 (1961), S. 7-15 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Second derivative formulae ofElkins andRosenbach are developed from a unified approach and their merits and demerits are discussed. Some new formulae are suggested, which, from theoretical considerations it is felt, will prove more efficient.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01992362
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  • 9
    Electronic Resource
    Electronic Resource
    Disturbances in a viscoelastic medium due to impulsive forces on a spherical cavity (1961)
    Springer
    Pure and applied geophysics 48 (1961), S. 23-26 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The disturbances produced in a visco-elastic medium by impulsive forces on the surface of a spherical cavity inside the medium have been studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01992364
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  • 10
    Electronic Resource
    Electronic Resource
    The determination of the regional part of the vertical gradient anomaly by a geodetic method (1961)
    Springer
    Pure and applied geophysics 48 (1961), S. 1-6 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The significance of the vertical gradients of gravity is great in geophysics and also in geodesy. In geophysics the observed vertical gradients can give valuable information about mass distributions close to the surface of the earth and in geodesy they may be used in determining the shape of the equipotential surfaces. The observed vertical gradients are very sensitive to masses close to the surface of the earth and they change very rapidly. Therefore, they should not be used for purposes such as the reduction of the observed gravity to the sea level. The normal vertical gradients are not the best either for this purpose because they are much too uniform on the surface of the earth. The best values for practical purposes are probably the regional vertical gradients. This paper presents a method to determine the regional vertical gradient anomalies in large areas from geodetic observations which, added to the normal part, will give the regional vertical gradients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01992361
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