METHOD OF SEISMIC EXPLORATION OF A MEDIUM, ESPECIALLY OF GEOPHYSICAL PROSPECTION BY SEISMIC WAVES

摘要

P THIS PROCESS CONSISTS OF EMITTING A FIRST SEQUENCE OF N MECHANICAL PULSES SEPARATED BY TIMES EQUAL T FOLLOWED BY A LISTENING TIME AT LEAST EQUAL TO THE TURN-BACK TIME OF A PULSE FROM THE GROUND TO THE DEEPEST LAYER, AT CORRELATE THE SIGNALS RECEIVED, TO ISSUED A SECOND SEQUENCE OF N SEPARATED PULSES BY TIMES EQUAL TO D DIFFERENT FROM T, TO PROCEED AS PREVIOUSLY, TO ISSUING A SUFFICIENT NUMBER OF SEQUENCES NI, TI, TO BE THE RESULTS OF THE DIFFERENT, CORRELATIONS TI, AS THE SUM OF THE SELF-CORRECTING FUNCTIONS IS IN THE FORM OF A CENTRAL PIC OF AMPLITUDE NN N ... NOR FRAME OF SECONDARY PICS WITH A RATIO SUPERIOR TO THE REPORT OF THE AMPLITUDES OF SIGNALS RECEIVED IN INTERVALS OF TIME CORRESPONDING TO INTERVALS SEPARATING THE MAIN PIC OF EACH OF THE SECONDARY PICS. /P