EVALUATION OF UPWARD CONTINUATION AND REDUCTION TOEVALUATION OF UPWARD CONTINUATION AND REDUCTION TO MAGNETIC EQUATOR ON AIRBORNE MAGNETIC DATA MAGNETIC EQUATOR ON AIRBORNE MAGNETIC DATA
This research work is aimed at interpreting the airborne magnetic data of the study area for mapping the basement geologic structures using magnetic image enhancement filters. It focus on performing filtering techniques to expose and identify the magnetic properties of the basement structures at various continuation distances. The procedure applied to Total Magnetic Intensity (TMI) data of the study area using Oasis MontanjTM software were Reduction to Magnetic Equator (RTME) to remove the inclination effect as well as positioning the peak of the anomalies over their sources so as to improve the orientation of the magnetic sources, separation of regional and residual magnetic anomalies. These was followed by application of upward continuation at 500 m, 1000 m, 2000 m and 3000 m height. The results of the RTME shows the amplitude of the magnetic anomalies ranging from -37.577 nT to 27.398 nT. High magnetic anomaly is dominated in the northwest, southeast through southern part of the study location. Furthermore the results of the Upward Continuation (UC) revealed a wider wavenumber anomalies as well as height above the near surface. Hence the results of this research has displayed an enhanced geological magnetic structures located in the study area and also shows an improved quality of magnetic anomalies as the continuation distances increases.
Ayinla Musbau (2014). Geology and mineral resources of Oyo state, southwestern Nigeria. Journal of Scientific Research and Report 3(21):2718-2731.
Eldosouky A.M., Elkhateeb S.O., Mahdy A.M., Saad A.A., Fnais M.S., Abdelrahman K. Andráš P. (2022) Structural analysis and basement topography of Gabal Shilman area, South Eastern Desert of Egypt, using aeromagnetic data. Journal of King Saud University – Science 34: 101764. https://doi.org/10.1016/j.jksus.2021.101764
Fedi, M. and G. Florio, 2001. Detection of potential field source boundaries by enhanced horizontal derivative method. Geophysical Prospecting, 49: 40-58
Ganiyu, S. A., Badmus, B. S., Awoyoemi, M. O. Akinyemi, O. D. Olurin, O. T. (2013). Upward continuation and reduction to pole process on aeromagnetic data of Ibadan area. Southwestern Nigeria. Earth Science Research, 2(1): 66-73.
Hazeez O. E., Oluyinka G. L., Makinde V., Bada B.S., Ogunbayo A.F., Atunrase K.F (2023). Qualitative interpretation of high resolution aeromagnetic data of Abeokuta metropolis for geological characterization. Results in Geophysical Sciences 15 100062 https://doi.org/10.1016/j.ringps.2023.100062
Ilugbo, S. O. Edunjobi, H. O., Adewoye, O. E., Alabi, T. O., Aladeboyeje, A. I., Olutomilola, O. O. and Owolabi, D. T. (2020). Structural Analysis Using Integrated Aeromagnetic Data and Landsat Imagery in a Basement Complex Terrain, Southwestern Nigeria Asian Journal of Geological Research 3(2): 17-33.
Mohamed, A.; Abdelrady, M.; Alshehri, F.; Mohammed, M.A.; Abdelrady, A. (2022). Detection of Mineralization Zones Using Aeromagnetic Data. Appl. Sci. 12, 9078. https://doi.org/10.3390/ app12189078
Ndousa-Mbarga T, Fenmoue A.N.S, Manguelle-Dicoum E, Fairhead J.D. (2012). Aeromagnetic data interpretation to locate buried faults in south-East Cameroon. Geophysical. 48(1–2):49–63.
Nuraddeen U. and Ibrahim J. (2020). Analysis of high resolution aeromagnetic data of some parts of Benue trough, Nigeria. FUDMA Journal of Sciences (FJS). 4(2):76 – 85 DOI: https://doi.org/10.33003/fjs-2020-0402-148
Ogunkoya, C. O., Edunjobi, H. O., Layade, G. O., Akinyosade, E.O., and Anie, N. O. (2023): Investigation of subsurface linear structure controlling mineral entrapment using potential field data of Ilesha. International Journal of Innovative Science and Research Technology (IJISRT). 8(6): 776-790.
Okpoli C. C. and Akinbulejo B. O. (2022). Aeromagnetic and electrical resistivity mapping for groundwater development around Ilesha schist belt, southwestern Nigeria. Journal of Petroleum Exploration and Production Technology, 12:555–575. https://doi.org/10.1007/s13202-021-01307-x.
Olomo, K. O., Bayode, S., Alagbe, O. A., Olayanju, G. M. Olaleye, O. K. (2022) Aeromagnetic Mapping and Radioelement Influence on Mineralogical Composition of Mesothermal Gold Deposit in Part of Ilesha Schist Belt, Southwestern Nigeria, NRIAG Journal of Astronomy and Geophysics, 11(1): 177-192, DOI: 0.1080/20909977.2022.2057147.
Onyedim, G. C. 2007. Enhancement of faults anomalies by application of steerable filters. Journal of Applied Sciences 7(2): 214-219.
Osinowo, O. O., Adabanija, M. A. and Adewoye, O. A. (2019). Structural Interpretation and Depth Estimation from Aeromagnetic Data of Abigi-Ijebu-Waterside area of Eastern Dahomey Basin, Southwestern Nigeria. Geofísica internacional 58-4: 259-277
Ozebo, V. C., Ogunkoya, C. O., Makinde, V., Layade, G. O., (2014). Source Depth Determination from Aeromagnetic Data of Ilesha, Southwest Nigeria, Using the Peters’ Half Slope Method. J. Earth Science Research, 3(1): 41-49
Ozebo, V. C., Ogunkoya, C. O., Layade, G. O. Makinde, V. and Bisilimi, A. L. (2017). Evaluation of Aeromagnetic data of Ilesha area of Oyo State Nigeria using Analytical signal (ASM) and Local wavenumber (LWN), Journal of Applied Environmental Management, 21(6): 1157-1161
Rajagopalan S. 2003. Analytical Signal vs reduction to pole: solutions for low magnetic latitudes. Expl Geo.34:257–262. doi:10.1071/EG03257
Suleiman, A., Aku, M. O., and Sanusi, Y. A. (2018). Analysis and interpretation of high resolution aeromagnetic data over Kabo town and its adjoining areas, in northwestern Nigeris. Bayero. Journal of Pure and Applied Sciences, 11(1): 145-152.
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