Accession Number:

ADA455187

Title:

DSO Velocity Inversion: A "Gas Cloud" Synthetic Example

Descriptive Note:

Corporate Author:

RICE UNIV HOUSTON TX DEPT OF COMPUTATIONAL AND APPLIED MATHEMATICS

Personal Author(s):

• Symes, William W.

Report Date:

1993-03-02

Pagination or Media Count:

26.0

Abstract:

A low velocity near surface anomaly delays the seismic wavefield and focuses wavefronts passing through it. Such anomalies occur as a result of localized gas seepages gas clouds in the sedimentary column, for example. Use of a migration velocity model not containing the anomaly will produce images containing false synclinal structures. Application of DSO velocity inversion to a simple example of this type images the velocity anomaly and removes the false structure.

Descriptors:

• *VELOCITY
• *ANOMALIES
• CLOUDS
• MODELS
• GASES
• IMAGES
• MIGRATION
• INVERSION
• WAVEFRONTS

Subject Categories:

• Operations Research
• Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE