Edge Enhancement of Magnetic Sources Using the Tilt Angle and Derivatives of Directional Analytic Signals

被引:7
|
作者
Pham, Luan Thanh [1 ]
Oliveira, Saulo P. [2 ]
机构
[1] Vietnam Natl Univ, Univ Sci, Fac Phys, Hanoi, Vietnam
[2] Univ Fed Parana, Dept Math, BR-19096 Curitiba, PR, Brazil
关键词
Magnetic anomaly; edge detection; tilt angle; directional analytic signals; POTENTIAL-FIELD DATA; GRADIENT TENSOR DATA; HORIZONTAL GRADIENT; LOGISTIC FUNCTION; THETA METHOD; ANOMALIES; WASHINGTON; BOUNDARIES; AMPLITUDE; LOCATION;
D O I
10.1007/s00024-023-03375-y
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
The analytic signal (AS1) has been widely used for mapping geological features from magnetic data. Some enhanced versions of the AS1 have been introduced to improve its effectiveness. Here, we compare the performance of these filters and introduce a filter obtained from the tilt angle and the directional analytic signals. For better performance on low latitudes, the directional analytic signals are obtained from the vertical integral of the magnetic anomaly rather than its magnetic potential. The proposed filter shows an apparent performance improvement in mapping the edges of magnetic sources, as shown with synthetic models and real example from the Olympic Peninsula, USA. The great advantage of the proposed technique is that the obtained result has lower influence from the magnetization vector direction than the AS1 and other related techniques. The findings demonstrate that the present method not only outlines the boundaries more precisely and clearly, but also reveals the presence of several structures obscured by nonmagnetic sediment in the study area, which are not determined by other methods.
引用
收藏
页码:4175 / 4189
页数:15
相关论文
共 50 条
  • [1] Edge Enhancement of Magnetic Sources Using the Tilt Angle and Derivatives of Directional Analytic Signals
    Luan Thanh Pham
    Saulo P. Oliveira
    Pure and Applied Geophysics, 2023, 180 : 4175 - 4189
  • [2] Edge enhancement of potential field data using an enhanced tilt angle
    Zhang, Xu
    Yu, Peng
    Tang, Rui
    Xiang, Yang
    Zhao, Chong-Jin
    EXPLORATION GEOPHYSICS, 2015, 46 (03) : 276 - 283
  • [3] Interpretation of magnetic data using tilt-angle derivatives
    Salem, Ahmed
    Williams, Simon
    Fairhead, Derek
    Smith, Richard
    Ravat, Dhananjay
    GEOPHYSICS, 2008, 73 (01) : L1 - L10
  • [4] Edge detection of potential field data using an enhanced analytic signal tilt angle
    Yan Ting-Jie
    Wu Yan-Gang
    Yuan Yuan
    Chen Ling-Na
    CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2016, 59 (07): : 2694 - 2702
  • [5] Enhancement of the total horizontal gradient of magnetic anomalies using the tilt angle
    Ferreira, Francisco J. F.
    de Souza, Jeferson
    Bongiolo, Alessandra de B. e S.
    de Castro, Luis G.
    GEOPHYSICS, 2013, 78 (03) : J33 - J41
  • [7] A new edge detection method based on the analytic signal of tilt angle (ASTA) for magnetic and gravity anomalies
    Ansari, A. H.
    Alamdar, K.
    IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION A-SCIENCE, 2011, 35 (A2): : 81 - 88
  • [8] Enhancing magnetic source edges using the tilt angle of the analytic-signal amplitudes of the horizontal gradient
    Pham, Luan Thanh
    Smith, Richard S.
    Oliveira, Saulo P.
    Jorge, Vinicius Theobaldo
    GEOPHYSICAL PROSPECTING, 2024, 72 (08) : 3026 - 3037
  • [9] Directional edge enhancement using superposed vortex filter
    Sharma, Manoj Kumar
    Joseph, Joby
    Senthilkumaran, Paramasivam
    OPTICS AND LASER TECHNOLOGY, 2014, 57 : 230 - 235
  • [10] Directional edge enhancement using anisotropic spiral phase filter
    Jiang, Yanjun
    Wang, Yongjun
    Li, Chao
    Gao, Kaiqiang
    Wang, Yutao
    Huang, Xingyuan
    2020 ASIA COMMUNICATIONS AND PHOTONICS CONFERENCE (ACP) AND INTERNATIONAL CONFERENCE ON INFORMATION PHOTONICS AND OPTICAL COMMUNICATIONS (IPOC), 2020,