The seismic noise wavefield is not diffuse

• DOI: 10.1121/1.3689551
• Publication Date: 2012-04-12T22:34:05Z
• Authors: Francesco Mulargia
• Keywords: Passive seismic

Passive seismology is burgeoning under the apparent theoretical support of diffuse acoustics. However, basic physical arguments suggest that this theory may not be applicable to seismic noise. A procedure developed establish applicability field paradigm a wavefield, based on testing latter for azimuthal isotropy and spatial homogeneity. This then applied noise recorded at 65 sites covering wide variety environmental subsoil conditions. Considering instantaneous oscillation vector measured single triaxial stations, hypothesis rejected in all cases with high confidence, which makes homogeneity test unnecessary leads directly conclude wavefield diffuse. such conclusion has no practical effect passive imaging, also possible non-diffuse wavefields.