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2011, 4

Yu.M. Zaslavsky, V.Yu. Zaslavsky

Seismic response of meteorite fall

language: Russian

received 04.02.2011, published 24.02.2011

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ABSTRACT

Peculiarities of seismic waves generated by small meteorite falling with cosmic velocity on the Earth surface are discussed. The pick value of the force by the fall, the duration of interaction and the approximate mean of a seismic oscillation level near the epicenter are evaluated. The estimations of the maximum of oscillation displacements in the pulse seismic responses of the longitudinal, transverse and surface waves are given by the use of the simplified model of elastic homogeneous half-space and in the supposition of vertical direction of the fall and on the distances from the epicenter corresponded to far wave zone. The parameters of seismic wave pulse responses are investigated on the base of numerical calculations of the integral expressions used by their description.

Key words: small meteorite, epicenter, cosmic velocity, seismic waves, pulse seismic responses, elastic homogeneous half-space.

11 pages, 3 figures

Сitation: Yu.M. Zaslavsky, V.Yu. Zaslavsky. Seismic response of meteorite fall. Electronic Journal “Technical Acoustics”, http://www.ejta.org, 2011, 4.

REFERENCES

1. Robert Marcus, H. Jay Melosh, and Gareth Collins. Earth Impact Effects Program. http://impact.ese.ic.ac.uk/cgi-bin/crater.cgi.
2. Robert Marcus, H. Jay Melosh, and Gareth Collins Earth Impact Effects Program: A Web-based computer program for calculating the regional environmental consequences of a meteoroid impact on Earth // Meteoritics & Planetary Science, 40, 6, 817-840 (2005).
3. E. Ewing, W. Jardetzky, F. Press. Elastic waves in layered media. New York. McGrow-Hill, 1957. – 454.
4. G. F. Miller, H. Pursey. On the partition of energy between elastic waves in a semi-infinite solid // Proc. Royal. Sci. Ser.A. 1955. V.233, Nо 1192. P. 55-63.
5. Е. Ф. Саваренский. Сейсмические волны. М.: Наука, 1977, 250 с.
6. Ю. М. Заславский Излучение сейсмических волн вибрационными источниками. ИПФ РАН, Н.Новгород, 2007, 200 с.

 

Yuriy Mikhaylovich Zaslavsky graduated radio-physical faculty of N.Novgorod University (1966), doctor of science, leader scientist at the Institute of Applied Physics Russian Academy of Science.
Scientific interests: acoustic and seismic wave propagation and radiation of these waves by coherent vibration sources, generation of seismic waves with sharp space-angle directivity on the base of phase arrays, the seismic signal reception, acoustic probing of heterogeneous in bowels of the earth, developing of the approaches for the enhancement of hydro-carbonates seismic probing efficiency.

e-mail: zaslav(at)hydro.appl.sci-nnov.ru
 
 

Vladislav Zaslavsky - PhD, Radiophysical faculty of Nizhny Novgorod State University

e-mail: zas-vladislav(at)appl.sci-nnov.ru