Open AccessNew Perspective in Regional and Residual Separation of Gravity and Magnetic Data Processing
Author(s) -
Wiji Raharjo,
Indiati Retno Palupi,
Oktavia Dewi Alfiani
Publication year - 2021
Publication title -
rsf conference proceeding series. engineering and technology
Language(s) - English
Resource type - Journals
eISSN - 2809-6843
pISSN - 2809-6878
DOI - 10.31098/cset.v1i1.400
Subject(s) - residual , matlab , gravity anomaly , computer science , fast fourier transform , filter (signal processing) , visualization , algorithm , process (computing) , grid , computational science , data processing , magnetic anomaly , software , data mining , mathematics , geophysics , geology , geometry , computer vision , programming language , database , paleontology , oil field
Separation between Regional and Residual anomaly in Gravity and Magnetic data processing is very important to get the best result in geological interpretation. Several method were used to solve this problem like upward continuation and polynomial fitting. With the same principle, 2D FFT is applied by make an interactive tools based on Matlab Language Programming, named “Oasis Ala-Ala”. It adopt the algorithm from software Oasis. It started with make visualization map or the original data, then the map divide into some grids. Each of grid contain gravity or magnetic data. Then it transformed from special to wavenumber domain. After that, it convolve with our own filter matrix. And the last step is inverse it to get the regional and residual anomaly map. However, Matlab is powerful in facilitate this process in the GUI Toolbox. One important thing is the size of gravity and magnetic data. It will improve to Filter matrix size before do inverse process.