Spectral enclosures for the damped elastic wave equation

[EN] In this paper we investigate spectral properties of the damped elastic wave equation. Deducing a correspondence between the eigenvalue problem of this model and the one of Lame operators with non self-adjoint perturbations, we provide quantitative bounds on the location of the point spectrum in terms of suitable norms of the damping coefficient.B. C. is member of GNAMPA (INDAM) and he was supported by Fondo Sociale Europeo Programma Operativo Nazionale Ricerca e Innovazione 2014-2020, progetto PON: progetto AIM1892920-attivita 2, linea 2.1. L. C. acknowledges financial support by the Deutsche Forschungsgemeinschaft (DFG) through CRC 1173