位场数据处理算法的数据挖掘试验与应用

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英文篇名：Data Mining Experiment and Application Based on Potential Field Data Processing Algorithms 作者：魏华敬 ; 尹宏伟 ; 姜素华 ; 汪刚 ; 赵斐宇 英文作者：WEI Huajing;YIN Hongwei;JIANG Suhua;WANG Gang;ZHAO Feiyu;School of Earth Sciences and Engineering,Institute of Energy Sciences,Nanjing University;College of Marine Geoscience,Key Laboratory of Submarine Geosciences and Prospecting Techniques,Ministry of Education,Ocean University of China; 关键词：数据挖掘 ; 重力异常 ; 位场数据处理算法 英文关键词：data mining;;gravity anomalies;;potential field data processing algorithms 中文刊名：SYSY 英文刊名：Research and Exploration in Laboratory 机构：南京大学地球科学与工程学院能源科学研究院;中国海洋大学海洋地球科学学院海底科学与探测技术教育部重点实验室; 出版日期：2019-01-15 出版单位：实验室研究与探索 年：2019 期：v.38;No.275 基金：国家自然科学基金项目(41572187,41272227);; 国家科技重大专项课题(2016ZX65026-002-007,2016ZX65003-001,2015ZX005008-001-005) 语种：中文; 页：SYSY201901004 页数：7 CN：01 ISSN：31-1707/T 分类号：15-21

摘要

以规则形体重力异常场为正演模型,基于Matlab平台运用位场的梯度算法、解析延拓算法、边界提取算法进行模型试算,总结了这3种位场数据处理算法的特点。梯度算法能识别和分离不同场源的异常;解析延拓算法能够压制和突出深部或浅部场源信息;边界提取算法能以阶跃或梯度带的形式反映场源体边界。最后运用位场数据处理算法结合数据挖掘的视角对塔里木盆地的布格重力异常进行处理及解释,得到研究区域主要断裂系统的分布为平行于盆地,走向为NE,NW,NEE。
        Taking the gravity anomalies of regular shape bodies as conversion model,this paper summarizes the features three potential field data processing algorithms,and operates model calculation using gradient algorithm,analytical continuation algorithm,boundary extraction algorithm,respectively,based on Matlab. The gradient algorithm is able to recognize and separate the anomalies coming from different sources. The analytical continuation algorithm contributes to suppress and highlight the information of deep or shallow sources. The boundary extraction algorithm is skilled at reflecting the borders of sources in the form of gradient zone and phase step. Finally,the methods are applied to the processing and interpretation of the actual Bouger gravity anomalies data in Tarim Basin from the perspective of data mining. It is concluded that the major fracture systems that orientate NE,NW and NEE are parallel to the borders of the basin.

引文

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