scholarly journals Edge detection and depth estimation of Galala El Bahariya Plateau, Eastern Desert-Egypt, from aeromagnetic data

2015 ◽  
Vol 2 (1) ◽  
pp. 25-41 ◽  
Author(s):  
Saada A. Saada
Keyword(s):  
Edge Detection ◽  
Depth Estimation ◽  
Eastern Desert ◽  
Aeromagnetic Data

ENHANCING LINEAR FEATURES IN AEROMAGNETIC DATA USING DIRECTIONAL HORIZONTAL GRADIENT AT WADI HAIMUR AREA, SOUTH EASTERN DESERT, EGYPT,

2020 ◽  
Vol 15 (2) ◽  
pp. 323-326
Author(s):  
Ahmed Mohammed ELDOSOUKY ◽  
◽  
Sayed Omar ELKHATEEB ◽  
Abeer ALI ◽  
Sherif KHARBISH
Keyword(s):  
Eastern Desert ◽  
Horizontal Gradient ◽  
Aeromagnetic Data ◽  
Linear Features ◽  
South Eastern

Depth to magnetic basement in the Anambra Basin, Benue Trough of Nigeria from aeromagnetic data: A prelude for hydrocarbon exploration

2021 ◽  
pp. 1-57
Author(s):  
Olatunbosun O. Olagundoye ◽  
Chiedu S. Okereke ◽  
Aniekan E. Edet ◽  
Dominic Obi ◽  
Aniediobong Ukpong
Keyword(s):  
Depth Estimation ◽  
Data Transformation ◽  
Hydrocarbon Exploration ◽  
Hydrocarbon Generation ◽  
Depth Range ◽  
Aeromagnetic Data ◽  
Benue Trough ◽  
Anambra Basin ◽  
Magnetic Basement ◽  
Fault Structures

Data transformation, regional-residual separation, trend analysis, and Analytic Signal (AS) depth estimation were applied to aeromagnetic data covering the Anambra Basin, which is a major depocentre in the Benue Trough, southeast Nigeria with the primary objectives of accentuating attributes of magnetic sources and determining if sufficient sediment thickness exists for hydrocarbon generation, maturation, and expulsion. The application of data transformation techniques (such as map projection, merging, and reduction-to-pole) and regional-residual ensured the computation of a crustal magnetic field that would be suitable for magnetic analyses. Results indicate that the magnetic basement in the basin forms an undulating surface overlain by sediments with average thickness ranging between 4 km and 7.5 km, while maximum thickness reaches 8 km in some areas. This depth range suggests promising prospect for source-facies maturation and expulsion. We expect that areas in the study area with these appreciable sediment thicknesses, good preservation of graben-fill, and suitable areal closures or fault structures would be favorable for hydrocarbon prospectivity.

Linear feature analysis for aeromagnetic data

Geophysics ◽  
2006 ◽  
Vol 71 (6) ◽  
pp. L61-L67 ◽  
Author(s):  
R. O. Hansen ◽  
Eduard deRidder
Keyword(s):  
New York ◽  
Principal Curvature ◽  
New York State ◽  
Synthetic Data ◽  
Depth Estimation ◽  
Structural Features ◽  
Horizontal Gradient ◽  
Aeromagnetic Data ◽  
Linear Feature ◽  
Total Gradient

This paper presents a new approach to detecting and two approaches to displaying lineaments associated with high-angle magnetic contacts, based on analysis of the curvature of the total horizontal gradient of the total magnetic field reduced to the pole. The first display is a contour or color plot of minus the principal curvature of largest absolute value. The second is a point plot of the local maxima of minus the largest principal curvature in regions where this curvature is negative. The paper also develops a depth-estimation technique for magnetic contacts based on the ratio of the curvature of the total gradient to the total gradient itself. Tests on synthetic data yield excellent results in detecting and delineating magnetic contact edges, and reasonable performance in producing depth estimates for the magnetic contacts. Results obtained using aeromagnetic data from the Finger Lakes region of New York State show good correlation with known structural features.

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