Physical description of Lg waves in inhomogeneous continental crust

Geophysical Journal International

Volumn 135, Issue 2, 1998, Pages 711-720

  Vaccari, Franco ^a,b   Gregersen, Søren ^c  

^a UNIVERSITY OF TRIESTE   (Italy)

^b CNR   (Italy)

^c Kort & Matrikelstyrelsen   (Denmark)

Author keywords

Continental crust; Elastic wave physics; Lg waves; North Sea; Seismic velocity; Surface wave; Velocity structure

Indexed keywords

CONTINENTAL CRUST; ELASTIC WAVE; SEISMIC VELOCITY; SURFACE WAVE; VELOCITY STRUCTURE;

NORTH SEA;

EID: 0032409093     PISSN: 0956540X     EISSN: None     Source Type: Journal    
DOI: 10.1046/j.1365-246X.1998.00681.x     Document Type: Article

References (21)

1. Campillo, M., 1986. Synthetic seismograms in heterogeneous elastic media. Method development and applications, PhD thesis, University of Grenoble and National Polytechnic Institute of Grenoble, Grenoble, France (in French).
2. Campillo, M., 1987. Lg wave propagation in a laterally varying crust and the spatial distribution of the quality factor in central France, J. geophys. Res., 92, 12604-12614.
3. Cao, S. & Muirhead, K.J., 1993. Finite difference modelling of Lg blockage, Geophys. J. Int., 115, 85-96.
4. Cara, M., Minster, J.B. & Le Bras, R., 1981. Multi-mode analysis of Rayleigh-type Lg. Part 2. Application to southern California and the northwestern Sierra Nevada, Bull, seism. Soc. Am., 71, 973-984.
5. Chazalon, A., Campillo, M., Gibson, R. & Carreno, E., 1993. Crustal wave propagation anomaly across the Pyrenean Range-Comparison between observations and numerical simulations, Geophys. J. Int., 115, 829-838.
6. Cheng, N. & Toksoz, M.N., 1997. An analysis of the nature and attenuation of Lg waves, in preparation.
7. Gibson, R.L. & Campillo, M., 1994. Numerical simulation of high-and low-frequency Lg-wave propagation, Geophys. J. Int., 118, 47-56.
8. Gregersen, S., 1978. Possible mode conversion between Love and Rayleigh waves at a continental margin, Geophys. J. R. astr. Soc., 54, 121-127.
9. Gregersen, S., 1982. Seismicity and observations of Lg wave attenuation in Greenland, Tectonophysics, 89, 77-93.
10. Gregersen, S., 1984. Lg-wave propagation and crustal structure differences near Denmark and the North Sea, Geophys. J.R. astr. Soc., 79, 217-234.
11. Gregersen, S. & Alsop, L.E., 1976. Mode conversion at a continental margin, Bull, seism. Soc. Am., 66, 1855-1872.
12. Gregersen, S. & Vaccari, F., 1993. Lg-wave modelling for the North Sea, Geophys. J. Int., 114, 76-80.
13. Kennett, B.L.N. & Mykkeltveit, R., 1984. Guided wave propagation in laterally varying media - II. Lg waves in northwestern Europe, Geophys. J.R. astr. Soc., 79, 257-267.
14. Kennett, B.L.N., Gregersen, S., Mykkeltveit, S. & Newmark, R., 1985. Mapping of crustal heterogeneity in the North Sea basin via the propagation of Lg waves, Geophys. J. Int., 83, 299-306.
15. Maupin, V., 1989. Numerical modelling of Lg wave propagation across the North Sea Central Graben, Geophys. J. Int., 99, 273-283.
16. Mitchell, B.J., Xie, J. & Pan, Y., 1996. Attenuation and blockage of Lg in Eurasia, in Monitoring a Comprehensive Test Ban Treaty, eds Husebye, E.S. & Dainty, A.M., NATO ASI series E 303, pp. 645-654, Kluwer Academic, Dordrecht.
17. Nuttli, O.W., 1981. On the attenuation of Lg waves in western and central Asia and their use as a discriminant between earthquakes and explosions, Bull, seism. Soc. Am., 71, 249-261.
18. Panza, G.F. & Calcagnile, G., 1975. Lg, Li and Rg from Rayleigh modes, Geophys. J.R. astr. Soc., 40, 475-487.
19. Regan, J. & Harkrider, D.G., 1989. Numerical modelling of SH Lg waves in and near continental margins, Geophys. J. Int., 98, 107-130.
20. Ruzaikin, A.I., Nersesov, I.L., Khalturin, V.I. & Molnar, P., 1977. Propagation of Lg and lateral variations in crustal structure in Asia, J. geophys. Res., 82, 307-316.
21. Vaccari, F., Gregersen, S., Furlan, M. & Panza, G.F., 1989. Synthetic seismograms in laterally heterogeneous, anelastic media by modal summation of P-SV waves, Geophys. J. Int., 99, 285-295.