Open AccessThree‐dimensional elastic scattering by near‐surface heterogeneities
Author(s) -
Riyanti Christina D.,
Herman Gérard C.
Publication year - 2005
Publication title -
geophysical journal international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0956-540X
DOI - 10.1111/j.1365-246x.2005.02492.x
Subject(s) - scattering , surface (topology) , half space , mathematical analysis , integral equation , traction (geology) , domain (mathematical analysis) , scale (ratio) , field (mathematics) , physics , mathematics , geology , geometry , optics , pure mathematics , quantum mechanics , geomorphology
SUMMARY With the aid of a domain‐type integral‐equation formulation, the scattering problem is studied of an inclusion, embedded in a layered, traction‐free, elastic half‐space. This problem is characteristic for near‐surface scattering problems occurring in exploration seismology. The singular character of the Green's function is taken into account in an accurate and efficient manner using an asymptotic description of its near‐field behaviour. The numerical results show good qualitative agreement with experimental scale‐model data. From a number of model studies, it is concluded that we can accurately model near‐surface scattering effects, which can seriously distort the wave fronts of upcoming reflections.