Abstract
In western China, thick gravel and huge sand dunes are widely distributed on the surface; the velocity of the nearsurface structure varies continuously in both vertical and lateral directions, resulting in serious statics problems. The conventional near-surface investigation and static correction method generally fail to solve the problems, and therefore the accuracy of structural imaging cannot be ensured. This paper introduces new static correction techniques based on a careful study of the near-surface structure and shows its satisfactory application results.
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