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AN ANALYSIS OF SURFACE CONSISTENCY STATIC ERROR |
YIN Qi-feng, PAN Dong-ming, XIA Nuan, LI Juan-juan, HU Ming-shun |
The School of Resource and Earth Science. CUMT, Xuzhou 221116,China |
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Abstract Currently, the static correction method widely used in the production is almost always based on surface-consistent hypothesis. However, in complex areas with sharp fluctuant topography and great low velocity layer thickness and transverse velocity change, the surface-consistent hypothesis is sometimes unfit for actual geological conditions; in this case, there must be significant errors if surface consistency static correction is still used. Modeling methods are used in this paper to discuss the cause for surface-consistent hypothesis static errors in complex areas and the relationship of this cause to datum, source-receiver offset, low velocity layer, bedrock speed, low-speed thickness and reflective surfaces depth, with an analysis of the variation regularity, in order to improve the existing static correction method, present a new approach and provide the reference for solving the problem of static correction in complex areas.
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Received: 08 October 2010
Published: 15 December 2011
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