Abstract: A seismic prospection method in which a compression seismic wave is emitted into the subsoil and sensors are used to collect seismic data having at least a shear component, and in which the data corresponding to said shear component is processed to deduce information about the geology of the subsoil, the method being characterized in that an estimate of the ratio: ∫ Z 0 Z ⁢ v p ·   ⁢ ⅆ l / ∫ Z 0 Z ⁢ v s ·   ⁢ ⅆ l is determined where vp and vs are values for real loca

Abstract: A low volume nonwoven separator and an electrochemical cell employing the separator are provided. The cell includes a positive electrode and a negative electrode. The nonwoven separator is disposed between the positive electrode and negative electrode. The nonwoven separator comprises, prior to insertion in the cell, a non-compressed single layer dry thickness in the range of 0.04 to 0.09 mm, and an average pore size of no greater than 14 &mgr;m. The cell further includes an electrolyte in contact with the separator and the positive and negative electrodes.