Statics can be divided into low-frequency part and high-frequency part.On the premise of lacking accurate full-depth velocity,in
order to carry out migration from rugged topography,a smooth datum is needed to perform the high frequent static correction
prior to thevelocity analysis and migration.So,based on the tomography surface model,a new method to calculate the high
frequent statics and the corresponding smooth datum is proposed in this paper.Through comparing this new method with the
traditional methods on a synthetic data and a field data,we proved that high-frequency static correction following with
migration from the corresponding smooth datum achieves better result.
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