摘要
白噪声、布郎运动以及其它满足在双对数坐标中呈一直线的信号具分形结构、自相似性或尺度无关性 .地球物理信号通常表现为多个这种信号的叠加 ,表现为多维分形特征 .研究、模拟在双对数坐标中成一直线的信号以及如何将多维分形中多个这种信号剖分出来 ,对于理解相应的地质、地球物理成因机制有重要意义 .通过对两口井的地球物理测井曲线处理 ,可以初步看出 ,在选定的地球物理测井曲线中 ,其具多维分形特征 ,不同的沉积过程相互叠加在原始测井曲线中 .用滤波方法分析分解信号 ,可以了解不同沉积作用特征并进一步分析可能的环境变化控制机制 .开发的图形界面程序使得这一过程极为容易 .
The whitenoise, Brian sigal and other signals which presents the linear characters of power spectra frequency space with bi logarithm system are the fractal, self affinity, selfǔsimilar, and scale in cariety. Geophysical signal is stacking results of these kinds of signals and present multi fractal character. It is with great significance to simulate, discern these kinds of signals to understand the generic reason of related geology and geophysical processes. Two well logging data were processed and they presents multi fractal charaters. They reflects different sedimentary process and contrilling procedure in their generation. Getting these signals by diltering methods can helps to understand possible sedimentary environment and its dynamics. A windows program package was developed to finish this research fleibky.
出处
《地球物理学进展》
CSCD
2000年第4期110-116,共7页
Progress in Geophysics
基金
中国自然科学基金资助项目! (D 497742 37)
关键词
多维分形
古气候变化
环境
测井曲线
分形噪声
Multifractal
Paleoclimate
Environment
Well logging
Multifractal filtering
