ODEC file converting method for chirp exploration of shallow marine depth

摘要

PURPOSE: A shallow subsurface elastic wave investigation obtaining material ODEC file converting method is provided to convert shallow subsurface elastic wave investigation data into wide use elastic wave investigation data, thereby easily searching the shallow subsurface elastic wave investigation data. CONSTITUTION: Text and reel header information are stored as the text and the reel header of a SEG-Y format(S110). Maximum depth and a maximum sample number of each trace are obtained in a trace footer of the total trace data of the ODEC file(S120). The trace data of the ODEC file is stored as the trace data of the SEG-Y format without deformation(S130). Information is recalculated and stored by reflecting the maximum depth and the maximum sample number on the reel header of the SEG-Y file(S140). The information is applied to the trace data of the SEG-Y file(S150). A change of changed sample number reflected on the trace header of the SEG-Y file is renewed(S160). [Reference numerals] (AA) Start; (BB) End; (S110) Storing text header and reel header; (S120) Calculating a maximum sample number and maximum depth in trace footer; (S130) Storing trace data; (S140) Reflecting the maximum sample number and the maximum depth, recalculating the reel header information; (S150) Applying the recalculated information to trace data; (S160) Storing changed sample numbers in trace header