With the direct access technique of a column or a block of grid data, it is possible for us to calculate the total gradient amplitude and to search automatically and trace continuously the maximum points of grid data in large quantities. In this paper, the authors put forward for the first time the idea of continuous tracing of a string of adjoining maximum points along the anomaly trend after automatic searching of a maximum point. The linking lines of the string of maximum points can show the horizontal sites of edges (or centers) of magnetic or gravity bodies and structures more directly and effectively. The practically improved software was used in inversion of model and surveying data, with fairly good results obtained.
郭志宏, 熊盛青, 曹建平. 航磁异常总梯度模反演方法的实用化改进及软件研制[J]. 物探与化探, 2004, 28(6): 518-522.
GUO Zhi-hong, XIONG Sheng-qing, CAO Jian-ping. THE PRACTICAL IMPROVEMENT AND SOFTWARE DEVELOPMENT OF TOTAL GRADIENT AMPLITUDE INVERSION OF AEROMAGNETIC PLANE GRID DATA. Geophysical and Geochemical Exploration, 2004, 28(6): 518-522.
［1］ Nabighian M N.The analytic signal of two-dimensional magnetic bodies with polygonal cross-section its properties and use for automated anomaly interpretation［J］. Geophysics, 1972,37(2):507-512.
［2］ Nabighian M N.Toward a three dimensional automatic interpretation of potential field data via generalized Hilbert transforms: Fundamental relations［J］. Geophysics, 1984,49(6):780-786.
［3］ 郭志宏,管志宁,熊盛青.航磁异常总梯度模的实用化改进方法［A］.中国地球物理学会.中国地球物理2003［C］.南京:南京师范大学出版社,2003.174-174.
［4］ 管志宁,姚长利.磁异常梯度解释理论与方法［R］.北京:中国地质大学(北京),1993.
［5］ 郭志宏,蔡振京.航磁ΔT平面归一化总梯度方法及其在内蒙陆西凹陷的应用［J］.物探与化探,1993,17(5):341-346.
［6］ 管志宁,姚长利.倾斜板状体磁异常总梯度模反演方法［J］.地球科学,1997,22(1):81-85.
［7］ 黄临平,管志宁.利用磁异常总梯度模确定磁源边界位置［J］.华东地质学院学报,1998,21(2):143-150.
［8］ 余钦范,楼海.水平梯度法提取重磁源边界位置［J］.物探化探计算技术,1994,95(6):23-28.
［9］ Blakely R J,Simpson R W.Approximating edges of source bodies from magnetic or gravity anomalies［J］.Geophysics, 1986,51(7):1494-1498.
