Method and system for determining source signatures after source ghost removal

摘要

SEISMIC DATA ARE ACQUIRED USING A SEISMIC SOURCE (104) COMPRISING A PLURALITY OF SEISMIC SUB-SOURCES DISPOSED IN A BODY OF WATER AT A PLURALITY OF DEPTHS AND ACTIVATED WITH DIFFERENT TIME DELAYS. FAR-FIELD SIGNATURES ARE DETERMINED FOR THE PLURALITY OF SEISMIC SUB-SOURCES AT EACH OF THE PLURALITY OF DEPTHS (21). A COMPOSITE GHOST-FREE FAR-FIELD SIGNATURE OF THE SEISMIC SOURCE IS DETERMINED FROM THE FAR-FIELD SIGNATURES FOR THE PLURALITY OF SEISMIC SUB-SOURCES AT EACH OF THE PLURALITY OF DEPTHS AND DIFFERENT TIME DELAYS (22). A SOURCE RESPONSE IS REMOVED FROM THE SEISMIC DATA USING THE FAR-FIELD SIGNATURES OF THE SEISMIC SOURCE (23). (FIG. 2)