May Rayleigh waves propagate with group- and phase-velocities of opposite sign in the valley of Mexico city?

vol.59 issue2

Observed Seismic Intensities and Damage Pattern in Central Mexico during Intraslab Earthquakes of 1999 (Mw6.9) and 2017 (Mw7.1)

Geophysics for geothermal exploration. Directional-derivatives-based computational filters applied to geomagnetic data at lake Cuitzeo, Mexico

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Geofísica internacional

On-line version ISSN 2954-436XPrint version ISSN 0016-7169

Abstract

MALISCHEWSKY, Peter G. and FORBRIGER, Thomas. May Rayleigh waves propagate with group- and phase-velocities of opposite sign in the valley of Mexico city?. Geofís. Intl [online]. 2020, vol.59, n.2, pp.101-104. Epub Oct 02, 2020. ISSN 2954-436X.

On the basis of the group-velocity formula the occurrence of negative group velocities of Rayleigh waves is theoretically discussed for simplified models of Mexico City's basin by using results of a preceding article of the authors.

Keywords : Rayleigh waves; negative group velocities; Valley of Mexico City.

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