ISSN:
1365-246X
Quelle:
Blackwell Publishing Journal Backfiles 1879-2005
Thema:
Geologie und Paläontologie
Notizen:
When travel times of group velocities of fundamental mode Rayleigh waves are expressed by means of some functional expansion, spherical harmonics in our case, the singularities appearing in the system of equations lead to the non-uniqueness of the developments. In accordance with a theory about the generation of compatible solutions, different sets of spherical harmonic coefficients are obtained, all of them fitting the experimental travel times with the same accuracy. Due to the linearity between the travel-time data and the spherical harmonic coefficients, the generation and testing of the compatible solutions becomes a very easy process. Imposing physical constraints on the group velocity maps significantly reduces the number of compatible models. Comparison of different compatible models allows an assessment of uncertainty in the group velocity distribution.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1111/j.1365-246X.1989.tb00484.x
