Sunday, July 18, 2010

Banana or Doughnut ?


The Banana Doughnut theory is a model in Seismic tomography that describes the shape of the Fresnel zone along the entire ray path. This theory suggests that the area that influences the ray velocity is the surrounding material and not the infinitesimally small ray path. This surrounding material forms a tube enclosing the ray but does not incorporate the ray path itself.