Physics – Geophysics
Scientific paper
Jul 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976avest..10....5d&link_type=abstract
(Astronomicheskii Vestnik, vol. 10, Jan.-Mar. 1976, p. 5-18.) Solar System Research, vol. 10, no. 1, July 1976, p. 3-12. Transl
Physics
Geophysics
Earth Crust, Gravity Anomalies, Mathematical Models, Meteorite Craters, Physical Properties, Planetary Crusts, Earth Planetary Structure, Geomagnetism, Geophysics, Gravitational Fields, Magnetic Anomalies, Magnetic Properties
Scientific paper
The article examines classifications of meteorite craters on the basis of various indicators such as the frequency of occurrence of craters as a function of dimensions, the nature of the gravity anomalies detected over crater, and the magnetic properties of rocks forming craters. A physical and mathematical model of the evolution of meteoritic structures is proposed which regards the lithosphere-asthenosphere mechanical system as consisting of a rigid upper mantle floating on a viscous substrate. Equilibrium of such a system in a gravitational field is studied for the two-dimensional case, and an equation describing the evolution of a depression is obtained. Some observed data are compared with predictions made with the model.
Dabizha A. I.
Fedynskii V. V.
Krass M. S.
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