摘要
利用小波变换对澳大利亚新南威尔士Mandamah地区所测得的EM38数据进行全局阈值消噪处理,通过分解与重构,从中提取有效信息,去除干扰,得到去噪后的数据。将去噪后的数据与地球化学Cu元素的异常特征、已知的铜矿化区域进行分析、对比,推测出该地区的铜矿化预测区。该方法能有效地去除噪声,又不会损失有用信息。实际资料处理结果表明:小波分析方法在EM38数据处理中可以起到独特的作用并获得良好的效果。
Taking on denoising processing to the EM38 data from Mandamah area in New South Wales, using wavelet transformation, then acquire the after-transformation values which have contained useful information and in which noises have been eliminated according to decomposing and restructuring. Compare the after-transformation EM38 values with the abnormal characteristics of Cu element, have an analysis and make the forecast. This method is effective in removing noises while retaining the useful information. The practical application result indicates that wavelet-analysis could play a special role in processing EM38 statistics and giving satisfying results.
出处
《地质通报》
CAS
CSCD
北大核心
2009年第6期812-815,共4页
Geological Bulletin of China
基金
国家重点基础研究发展计划项目(编号:2006CB701400)
国家自然科学基金项目(批准号:40672196
40638041)
地质过程与矿产资源国家重点开放实验室项目资助
关键词
EM38
小波变换
去噪
矿化预测
EM38
wavelet transformation
denoising
mineralization forecast
