1887
Volume 30, Issue 3
  • ISSN: 0263-5046
  • E-ISSN: 1365-2397

Abstract

Unresolved velocity anomalies in the near surface degrade deeper imaging. As a consequence, great care needs to be taken to ensure that all significant near-surface effects have been dealt with before attempting to build the deeper parts of a velocity–depth model. In order to incorporate velocity anomalies into the model, a range of options can be used, depending on whether the geobody geometry alone is discernible, or whether its velocity distribution is also known. Here I describe current industrial practice for building complex near-surface models, which is based on a range of approximate techniques, as well as the more complete solution offered by the emerging technology of waveform inversion. Although building complex nearsurface models is a painstaking process, a suitable near-surface velocity model can usually be obtained.

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/content/journals/10.3997/1365-2397.2011041
2012-03-01
2024-03-29
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http://instance.metastore.ingenta.com/content/journals/10.3997/1365-2397.2011041
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  • Article Type: Research Article
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