摘要
介绍了地质体边界识别中的归一化总水平导数垂向导数法和改进的倾斜角及其水平总梯度法,并通过模型计算和应用实例,分析了它们相对于传统识别方法所具有的突出优势。归一化总水平导数垂向导数法对埋藏较深的地质体识别效果较好;改进的倾斜角法能突出深层场源弱信号,压制背景场的畸变现象,使得场源边界位置更加稳定。
The edge recognition techniques applied in this paper are the normalized vertical derivative of the total horizontal derivative and the improved tilt angle.Through the synthetic model and application example,their strengths over the traditional derivative-based techniques are analyzed.The NV dr_Th dr method has better recognition effect on geological bodies with deeper burial depth.Furthermore,the iTdr method can highlight the weak signal of deep sources and suppress the distortion of background field,which makes the boundary position of sources stabler.
作者
陈青
唐凤莲
纪翔曦
张健
刘浩
陈浩
CHEN Qing;TANG Fenglian;JI Xiangxi;ZHANG Jian;LIU Hao;CHEN Hao(School of Petroleum and Natural Gas Engineering,Chongqing University of Science andTechnology,Chongqing 401331,China;Chongqing Key Laboratory of Complex Oil and Gas Exploration and Development,Chongqing 401331,China;Chongqing 208 Geo-environmental Engineering Survey and Design Institute Co.Ltd.,Chongqing 400700,China)
出处
《重庆科技学院学报（自然科学版）》
CAS
2020年第5期1-8,共8页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
国家自然科学基金项目“南北构造带北段及邻区岩石圈力学强度与形变特征研究”(41702210)
重庆市基础科学与前沿技术研究专项“南北构造带北段及邻区岩石圈有效弹性厚度及其对强震活动性的约束”(cstc2017jcyjAX0370)
重庆市教委科学技术研究项目“龙门山构造带深部结构特征及其对地震活动性的约束”(KJQN201901535)
重庆科技学院博士教授科研启动基金项目“大巴山推覆构造变形特征的数值模拟及其对油气的控制作用”(CK2016B12)。
关键词
地质体
边界识别
重力异常
位场数据
倾斜角
水平总梯度
geological bodies
edge detection
gravity anomaly
potential field data
tilt angle
total horizontal derivative
