基于B样条函数的不定积分变换法在磁力资料处理中的应用  

The Application of Indefinite Integral Transformation Based on the B-Spline Function to Magnetic Data Interpretation

作　　者：张维冈[1] 陶倩倩[1] 韩同城[1] 裴建新[1] 张敏[1] 

机构地区：[1]中国海洋大学海洋地球科学学院海底科学与探测技术教育部重点实验室,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2008年第3期447-452,共6页Periodical of Ocean University of China

摘　　要：磁异常的不定积分变换法是1种提高磁异常处理及解释能力的方法。提出利用3次B样条插值函数对等距节点离散磁异常进行不定积分变换,实现了对实测数据处理和不定积分参量图的应用,验证了该方法的正确性和可行性。选取胶州湾湾口区2条典型测线,对磁异常数据进行变换得到不定积分参量图,将实测磁异常与模型磁异常的剖面图、参量图、不定积分参量图综合对比得出,不定积分参量图在判断地质体参数值方面有着明显的优势,利用3种图形综合解释可进行定量解释并减少解释多解性。The indefinite integral transformation of magnetic anomaly is a method which can enhance the ability in data processing and interpretation. The equal interval discrete magnetic anomaly eatd has been integrally transformed using the cubic B-spline function, and the method is proved feasible and correct. Two representa- tive lines of Jiaozhou bay are selected as examples to verify the method. The indefinite integral transformed parameter figures are created by the method firstly, then by comprehensive comparison of the survey data＇s and model data＇s profile pictures, parameter pictures and indefinite integral transformed parameter pictures, the conclusion is deduced that the indefinite integral transformed parameter figures have obvious advantages in estimating the parameter of geological objects, the method comprehensively utilizing three kinds of pictures in interpretation can be more effective and can also reduce multi-interpretation.

关 键 词：磁异常 B样条函数 不定积分变换 参量图 不定积分参量图 

分 类 号：P631.4[天文地球—地质矿产勘探]