Figure F7. Estimates of seismic source wavelet derived in three ways: red line = modeled from air gun source configuration of the Maurice Ewing using the commercial software package Nucleus; green line = extracted from SCREECH MCS data by deconvolving the first seabed multiple with the first arrival, as described by Korenaga et al. (1997); and blue line = a trace extracted from SCREECH prestack seismic data near Site 1276. Amplitudes of each trace have been normalized so that the maximum positive amplitude = 1. CMP = common midpoint.