61 research outputs found

    Über die Festigkeit des Glases

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    Separaat väljaandest: Bulletin de l'Académie Impériale des Sciences de St.-Pétersbourg, 1902, t. XVI, No 1http://tartu.ester.ee/record=b1737469~S1*es

    Representations of the radiated energy in earthquakes

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    We investigate the representation of the radiated energy, E_R, in earthquakes. In seismology E_R is estimated from either far-field seismic waves or the stress and displacement on the fault plane. Although E_R comes from the entire volume of the Earth, it can be expressed as an integral over the fault plane. However, the integrand cannot be given a simple physical meaning such as the radiated energy density on the fault plane. The stress on the fault plane changes rapidly during a seismic rupture. Although the energy radiated by this process is not included in the estimate of E_R in a simplified practice in seismology, it is correctly included in the expression of E_R in standard seismological practice. Using the representation theorem, we can express E_R as a surface integral over the fault plane, with the integrand containing the slip function on the fault plane. However, the integrand at a point depends not only on the slip function at the point but also on the slip functions everywhere on the fault plane. Thus, the simple method in which E_R is estimated by summation of the local energy flux on the fault plane does not yield a correct estimate

    Werke von Boris Golitsyn (Galitzine)

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    Efficiency of Damped Seismographs

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    A Russian Religious

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    Über Rayleigh-Wellen an der Grenzfläche zweier Medien

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    Konstante Differenzen in den Linienspektren

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