利用插值切割法研究磁性基底局部起伏特征

Studying the local relief characters of magnetic basement by the interpolation-cut method

青岛海洋大学地质地球物理研究所,青岛 2660O3

Instituto of Geology and Geophysics, Ocean University of Qingdao, Qingdao 266003

首先提出了明显改善插值切割法异常分离效果的改进切割方案, 然后着重研究了该方法在研究盆地磁性基底局部起伏特征中的应用。模型与实际资料的研究表明, 分离结果可以清晰直观地反映基底起伏特征, 并在有利条件下可用来比较基底起伏幅度的相对大小, 因而可以取得明显的地质效果, 是盆地基底起伏特征研究的一种有效方法。

This paper puts fotward a medified cutting scheme for the interpolation-cut method,which can obviously improve the anomaly separation effect. The application of this methed is then dis-cussed emphatically in the research of local relief characters of basin magnetic basemeat. The study ofmodel and real data demonstrates that the results of anomely separation can not only reveal the reliefcharacters of magnetic basement, but also be used to compare the re1ative magnititude of basement reliefunder favourable condition. It is an effective method for the study of basin basernent relief characters.