Figure F3. Time and frequency displays of wireline DSI data (pass 1) from ~250 to 350 mbsf in Hole 1173A. Red = high and blue = low acoustic energy over the 0- to 20-kHz frequency band. Much of the observed monopole energy above 10 kHz is not useful for P-wave processing. The dipole energy occurs below 1.5 kHz. Both data sets require filtering and processing to extract reliable velocity information.

Figure F3. Time and frequency displays of wireline DSI data (pass 1) from ~250 to 350 mbsf in Hole 1173A. Red = high and blue = low acoustic energy over the 0- to 20-kHz frequency band. Much of the observed monopole energy above 10 kHz is not useful for P-wave processing. The dipole energy occurs below 1.5 kHz. Both data sets require filtering and processing to extract reliable velocity information.