小波多尺度分解用于辽宁铁岭下峪铁矿磁异常的解释  

THE APPLICATION OF WAVELET MULTI-SCALE SOLUTION TO THE MAGNETIC ANOMALY INTERPRETATION OF THE XIAYU IRON ORE DEPOSIT IN TIELING,LIAONING PROVINCE

作　　者：王建复[1] 

机构地区：[1]辽宁省第九地质大队,辽宁铁岭112000

出　　处：《物探与化探》2013年第4期615-619,共5页Geophysical and Geochemical Exploration

摘　　要：以铁岭下峪铁矿高精度磁测数据为基础,采用小波多尺度分析方法,将磁异常分解到不同尺度空间,结合谱分析方法,有效地获取了下峪铁矿不同深度的场源异常特征,提高了磁异常解释精度,推测了下峪铁矿200 m以下已没有铁矿体的存在。利用已知地质资料建立的地质体模型,通过二度半人机交互反演拟合出矿体的形态特征,分析了其对应异常体的相对深度,从另一个角度进一步验证了小波多尺度分解方法对矿体空间分布特征判断的准确性。With the high-precision magnetic survey data obtained from the Xiayu iron deposit as the basis, the author adopted the wave- let multi-scale analytical method to decompose the magnetic anomaly into space of different scales and, in combination with spectrum a- nalysis method, effectively obtained field source anomaly characteristics at different depths of the Xiayu iron ore deposit, thus improving the interpretation precision of the magnetic anomaly. It is inferred that there exists no iron ore body below 200 m in the Xiayu iron de- posit. The geological body model established on the basis of geological data available were utilized to display the shape of the ore body through two-degree-and-a-half interactive inverse fitting, and the depth of the corresponding anomaly body was analyzed. The results obtained further prove the accuracy of the wavelet multi-scale decomposition method in judging the distribution of the ore body from an- other angle.

关 键 词：下峪铁矿 小波分析 谱分析 二度半模型反演 

分 类 号：P631.2[天文地球—地质矿产勘探]