摘要
结合谋地区地质地球物理资料及磁测数据,通过MATLAB二三维转化反演法,在对不规则数据处理的基础上,运用二维数据拟合提取的方法,较好的对数据进行了筛选和处理。通过对拟合后数据进一步提取,进行三维成图,基本实现了不规则数据的建模拟合,较好的解决了直接用三维数据建模困难和难以提取的问题。本文又通过精测剖面实测数据进行了验证,得知该方法在数据处理及异常解释中可行有效,抑郁建立较为规则的数据模型。结合地质地球物理对该区数据进行异常解释,对异常成因作出相应解释,初步推断了该区两处较大磁异常断裂,并与地质条件对比,结果吻合。
Based on the irregular data processing and the method of two-dimensional data fitting and extracting,the data are screened and processed well by using MATLAB 2 D-3 D inversion method combined with the geophysics data and magnetic survey data.By further extracting the fitted data and drawing the 3-d graph,the irregular data can be modeled and fitted,and the problem of modeling and extracting with 3-d data directly is solved.The method is proved to be feasible and effective in data processing and abnormal interpretation,and a regular data model is established for depression.According to the anomaly interpretation of the geophysics data and the corresponding explanation of the origin of the anomaly,two large magnetic anomaly faults in the area are preliminarily inferred and compared with the geological conditions,and the results are consistent.
作者
吴琼
秦丽丽
WU Qiong;QIN Li-li(The First Institute of Geology and Mineral Exploration,Gansu Provincial Bureau of Geology and Mineral Exploration and Development,Lanzhou 730000,China;Lanzhou Physics Institute of Space Technology,Lanzhou 730000,China)
出处
《甘肃地质》
2020年第1期101-104,共4页
Gansu Geology
关键词
数据
二维
三维
异常体
断裂
岩浆侵入
data
two-dimensional
three-dimensional
abnormal body
fracture
magma intrusion
