关键词: 重力异常, 航磁异常, 对应分析, 自适应, 铁矿

Abstract: By using the correlation analysis of aeromagnetic and gravity anomaly, the characteristic of correlation coefficient has been estimated over single and three abnormal models. The absolute value of correlation coefficient at the center of gravity and magnetic anomaly regional is equal to 1 when gravity and magnetic anomalies coincide, otherwise less than 1. However, where thare no gravity and magnetic anomaly, the absolute value of correlation coefficient can also approach 1. In this case, the correlation coefficient not only makes no sense but also gives an illusion away from the field. Therefore, the adaptive correlation analysis is developed. The adaptive and traditional correlation analysis methods have been applied to northern margin of Shanxi and Hebei to western Liaoning metallogenic belt, both revealing the gravity and magnetic anomalies in Luannan, Macheng and southern Sijiaying region. In east Xinji, southwestern Xiaomazhuang, northeastern Shimen, there are no gravity and magnetic anomalies, which is also confirmed by the adaptive correlation analysis. However, the traditional method shows the abnormal.

Key words: gravity anomaly, aeromagnetic anomaly, correlation analysis, adaptive correlation analysis, iron deposits