Study of Aquatic Sedimentation Using Electromagnetic Modeling in Flood Hazard Mitigation Scheme
DOI:
https://doi.org/10.5614/j.eng.technol.sci.2023.55.3.1Keywords:
ABFM, electromagnetic modeling, flood risk, flood hazard mitigation, sedimentation, TDEMAbstract
The accumulation of sediment in aquatic environments can lead to an increase in flood risk due to raised floodplains and water levels. Electromagnetic modeling techniques, such as Time Domain Electromagnetic (TDEM) resistivity or lithological conductivity contrast, can be utilized to detect changes in the subsurface. In this study, we investigated the use of TDEM in flood hazard mitigation schemes by developing a 1-D forward modeling program for the central loop configuration in an aquatic environment using the Adaptive Born Forward Mapping (ABFM) method. The program was tested in various environmental conditions, i.e., freshwater, brackish water, and saltwater, to determine its response. The objective is to prevent natural disasters, particularly flooding caused by sedimentation. The TDEM models can generate images of sediment thickness, providing a sensitive response in saltwater environments and enabling the detection of changes in depth compared to other aquatic environments. Overall, this study demonstrated the potential of TDEM as a valuable tool in flood hazard mitigation schemes.
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References
Widodo, Tezkan, B. & Gurk, M., Multidimensional Interpretation of Radiomagnetotelluric and Transient Electromagnetic Data Measured in The Mygdonian Basin, Northern Greece, J. Env. and Eng. Geophys., 21(3), pp. 121 - 133, 2016. doi:10.2113/JEEG21.3.121.
Widodo & Rasyid, F.M., Application of Time Domain Electromagnetic Method to Study Lembang Fault, West Java, AIP Conference Proceedings., 1861, 030034, 2017. doi: 10.1063/1.4990921.
Widodo, Earthquake Disaster Mitigation of Lembang Fault West Java with Electromagnetic Method, AIP Conference Proceedings, 1658, 030010, 2015. DOI 10.1063/1.4915018.
Widodo, W., Azimmah, A. & Santoso, D., Exploring the Japan Cave in Taman Hutan Raya Djuanda, Bandung Using GPR, J. Env. and Eng. Geophys., 23(3), p. 377 - 3811, 2018. doi:10.2113/JEEG23.3.377.
Hesham, E., Mapping Sea Water Intrusion in Coastal Area Using Time-Domain Electromagnetic Method with Different Loop Dimensions, J. Appl. Geophys., 175, 103963, 2020. doi: 10.1016/j.jappgeo.2020.103963.
Nurjanah, S. & Widodo, Modeling of Floating Time Domain Electromagnetic Method to Detect Dissolved Sediment, IOP Conference Series: Earth and Environmental Science, 62(1), 012044, 2017. doi:10.1088/1755-1315/62/1/012044.
Firdaus, M.A., Widodo & Fatkhan, River Sedimentation Modeling Using Ground-Penetrating Radar, The 3rd Southeast Asian Conference on Geophysics, IOP Conference Series: Earth and Environmental Science, 873(1), 012041, 2021. doi:10.1088/1755-1315/873/1/012041.
Olawale, O.O., Olumide, E.F., Elijah, A.A. & Abel, I.O., Structural mapping and gold mineralisation potential evaluation from airborne time?domain electromagnetic (TDEM) data of Ilesha Schist Belt, southwestern Nigeria, J. Explor. Geophys., 53(3), pp. 237-254, 2022. doi: 10.1080/08123985.2021. 1922275.
Pieter, H. & Mark, W.B., Case Histories of Time-Domain Electromagnetic Soundings in Environmental Geophysics, J. Geotechnical and Environmental Geophysics: Volume II: Environmental and Groundwater, Society of Exploration Geophysicists, pp. 1-16, 1990.
Hoekstra, P. & Blohm, M.W., Case Histories of Time-Domain Electromagnetic Soundings in Environmental Geophysics, in Geotechnical and Environmental Geophysics: Volume II: Environmental and Groundwater, Society of Exploration Geophysicists, pp. 1- 16, 1990.
Nurjanah, S. & Widodo, Innovation of Floating Time Domain Electromagnetic Method in the Case of Environmental Geophysics, AIP Conference Proceedings, 1861, 030024, 2017. doi:10.1063/1.4990911.
Christensen, N., A Generic 1-D Imaging Method for Transient Electromagnetic Data, J. Geophysics, 67, Mar. 2002. doi: 10.1190/1.1468603.
Widodo, Raflesia, F., Alawiyah, S., Setianingsih, Santoso, D., Parnadi, W.W. & Fatkhan, Flower Pollination and Elitism Algorithms for Inversion of TDEM Data, J. Math. Fund. Sci, 54, pp. 121-137, 2022. doi: 10.5614/j.math.fund.sci.2022.54.1.7.
Yogi, I.B.S. & Widodo, Central Loop Time Domain Electromagnetic Inversion Based on Born Approximation and Levenberg-Marquardt Algorithm, IOP Conference Series: Earth and Environmental Science, 62(1), 012029, 2017. doi:10.1088/1755-1315/62/1/012029.
Yogi, I.B.S. & Widodo, Implementation of Hybrid Optimization for Time Domain Electromagnetic 1D Inversion, AIP Conference Proceedings, 1861, 030035, 2017. doi:10.1063/1.4990922.
Yogi, I.B.S. & Widodo, Time Domain Electromagnetic 1D Inversion Using Genetic Algorithm and Particle Swarm Optimization, AIP Conference Proceedings, 1861, 030014, 2017. doi:10.1063/1.4990901.
