ABSTRACT
We investigate the sensitivity of AVO attributes to
uncertainty in migration velocity in a synthetic dataset.
The synthetic data was built using a earth model with typical rock properties
from a real North Sea turbidite field.
The model includes a thick overburden layer with complex
velocity anomalies.
We examine the sensitivity of AVO response due to the presence
of this complex layer and quantify the influence of migration velocity
errors in the AVO signature.
Results show that AVO gradient attribute is more sensitive to
velocity errors than AVO intercept attribute.
For velocity errors up to 5% we see a maximum of AVO intercept errors
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