THE APPLICATION OF NEAR REAL-TIME ERS-1 SAR DATA TO THE PREDICTION OFTHE LOCATION OF INTERNAL WAVES AT SEA

The use of an ERS-1 SAR fast delivery image in near real-time for guid ing an oceanographic cruise in search of internal waves is discussed. Different image navigation methods are presented and compared. A simpl e method for predicting the position of internal waves up to four days after image acquisition is presented. The reliability of the predicti on method is assessed by comparing the times at which internal waves w ere observed to arrive at several positions on the Portuguese shelf, w ith predictions derived from an automatically navigated image.