The gas-containing abnormal feature and forming mechanism of Tainan structure in Sanhu depression in the area are expounded by new seismic technique, method and explanatory viewpoint so as to reveal the technical key of discoverying Tainan gas field.

• 文中运用新的解释观点，借助于地震波速对比分析、趋势面恢复和模拟地震剖面等方法和手段，着重阐明了该区三湖拗陷台南构造含气异常的特征和形成机理，揭示了发现台南气田的技术关键，指出拗陷中部是该区的找气有利区。