Effect of point source and heterogeneity on the propagation of SH-Waves in a viscoelastic layer over a viscoelastic half space

Czasopismo : Acta Geophysica
Tytuł artykułu : Effect of point source and heterogeneity on the propagation of SH-Waves in a viscoelastic layer over a viscoelastic half space

Autorzy :
Yamasaki, K.
Department of Earth and Planetary Sciences, Faculty of Science, Kobe University, Nada, Kobe, Japan, yk2000@kobe-u.ac.jp,
Teisseyre, R.
Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland, rt@igf.edu.pl,
Li, C.
School of Computer Engineering and Science, Shanghai University, Shanghai, China, jyyin@staff.shu.edu.cn,
Majdański, M.
Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland, mmajd@igf.edu.pl,
Trojanowski, J.
Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland, jtroj@igf.edu.pl,
Öztürk, S.
Gümüşhane University, Department of Geophysics, Gümüşhane, Turkey, serkanozturk@gumushane.edu.tr,
Chattopadhyay, A.
Department of Applied Mathematics, Indian School of Mines, Dhanbad, India, amares.c@gmail.com,
Abstrakty : The present paper is concerned with the propagation of shear waves in a homogeneous viscoelastic isotropic layer lying over a semi-infinite heterogeneous viscoelastic isotropic half-space due to point source. The inhomogeneity parameters associated to rigidity, internal friction and density are assumed to be functions of depth. The dispersion equation of shear waves has been obtained using Green's function technique. The dimensionless angular frequency has been plotted against dimensionless wave number for different values of inhomogeneity parameters. The effects of inhomogeneity have been shown in the dispersion curves. graphical user interface (GUI) software in MATLAB has been developed to show the effect of various inhomogeneity parameters on angular frequency. The topic can be of interest for geophysical applications in propagation of shear waves on the Earth’s crust.

Słowa kluczowe : shear waves, heterogeneity, point source, Green’s function, viscoelastic medium, GUI in Matlab,
Wydawnictwo : Instytut Geofizyki PAN
Rocznik : 2012
Numer : Vol. 60, no. 1
Strony : 119 – 139
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Cytuj : Yamasaki, K. ,Teisseyre, R. ,Li, C. ,Majdański, M. ,Trojanowski, J. ,Öztürk, S. ,Chattopadhyay, A. , Effect of point source and heterogeneity on the propagation of SH-Waves in a viscoelastic layer over a viscoelastic half space. Acta Geophysica Vol. 60, no. 1/2012