Frequency Dependence Of Seismic Data From Nigeria: Preliminary Results

Abstract

Seismic data from the Niger Delta is used to test processing sequences involved in prestack and poststack amplitude and frequency analysis of marine seismic data. Water bottom reverberations are found to present a formidable challenge in poststack frequency and amplitude analysis. However, reflectors with anomalously high amplitudes show low frequency content both in deconvolved poststack data and in the near offsets of prestack data with no deconvolution, which agrees with results in the literature. Lack of detailed knowledge of the lithology prevents investigation of the physical nature of the amplitude and frequency variations.