Information from Seismic Noise

摘要

It is commonly supposed that noise obscures, but does not contain, useful information. Intuition suggests that multiple scattering of waves garbles them into illegibility Yet insights arising out of a branch of physics called "mesoscopic physics" arechallenging this assumption Theory shows that, regardless of scattering, linear waves-preserve a residual coherence. This coherence leads to behaviors that confound intuition, such as Anderson localization in which a multiply scattered wave field is confined to a finite volume and unable to diffuse.