Authors / CoAuthors
Petkovic, P.
Abstract
The seismic stacking velocity data in the Otway Basin are a useful dataset for calculating depths and sediment thicknesses. This work presents time-depth relationships computed from unsmoothed stacking velocities and compares these with functions obtained from sonobuoy refraction data and exploration well sonic logs. The comparison suggests that a total sediment thickness over-estimate for the Otway Basin of about 15% can be expected from the depths derived from stacking velocities alone. On the other hand, for sediment thickness calculations down to ~3 s two-way travel time below sea floor, stacking velocity data give comparable depths to those obtained from the sonic logs. A piece-wise formula is offered which scales the time-depth function for the Otway Basin in order to compensate for the depth overestimate inherent in using stacking velocities to calculate total sediment thickness.
Product Type
document
eCat Id
49566
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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Keywords
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- GA PublicationRecord
- ( Theme )
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- seismics
- ( Theme )
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- seismic sections
- ( Theme )
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- sedimentary basins
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_External
Publication Date
2003-01-01T00:00:00
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Topic Category
geoscientificInformation
Series Information
Record 2004/002
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Unknown
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Extents
[-42.5, -36.75, 137.0, 145.5]
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