ESTIMATION OF EFFECTIVE SOURCE SIGNATURES FROM MARINE VSP DATA

Citation
K. Hokstad et al., ESTIMATION OF EFFECTIVE SOURCE SIGNATURES FROM MARINE VSP DATA, Geophysical prospecting, 44(2), 1996, pp. 179-196
Citations number
7
Categorie Soggetti
Geochemitry & Geophysics
Journal title
ISSN journal
00168025
Volume
44
Issue
2
Year of publication
1996
Pages
179 - 196
Database
ISI
SICI code
0016-8025(1996)44:2<179:EOESSF>2.0.ZU;2-K
Abstract
We present a simple method for estimating an effective source wavelet from the first arrival in marine vertical seismic profiling (VSP) data . The method, which utilizes the free-space Green's function of the He lmholz equation, is simple and very computer efficient. We show exampl es from synthetic and real offset and walk-away VSP data. In the synth etic examples, we show that data modelled with the estimated wavelet g ive small residuals when subtracted from the reference data. In the re al data examples, we show that when modelling with the wavelet estimat ed from the real data, in a smooth macromodel, we obtain a good fit be tween the first arrivals in the real and modelled data.