Figure 11: The Leg 123 VSP data was processed by separating the total field into separate upgoing and downgoing wavefields. This figure shows the upgoing wavefield for an airgun source. The processing revealed additional reflections in the sedimentary section between 8.25 and 8.55 sec and a sub-basement reflector at 8.86sec. The traces between 90 and 150mbsf are a stack of the deconvolved VSP data (traveltimes are for two-way propagation.) The VSP section can be used to correlate the BMR seismic reflection line (top) with the drilling results (left side). The seismic sequences are numbered. [Bolmer et al., 1992]

Retun to the 2003 Fall AGU Poster

THIRD PARTY BOREHOLE SEISMIC EXPERIMENTS DURING THE OCEAN DRILLING PROGRAM

Created on December 10, 2003 by Tom Bolmer