TY - JOUR AU - Turainé Vurom, Brigitta AU - Dobróka, Mihály TI - Multiexponenciális kőzetfizikai modell a szeizmikus/akusztikus P- és S-hullám jósági tényező nyomásfüggésének leírására JF - MAGYAR GEOFIZIKA J2 - MAGYAR GEOFIZIKA VL - 66 PY - 2026 IS - 3 SP - 94 EP - 101 PG - 8 SN - 0025-0120 UR - https://m2.mtmt.hu/api/publication/36858558 ID - 36858558 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Mohieldain, Ali Ahmed AU - Dobróka, Mihály AU - Mohammed, Musaab Adam Abbakar AU - Szabó, Norbert Péter TI - Gravity-based structural and tectonic characterization of the Shendi-Atbara Basin, Central Sudan JF - JOURNAL OF AFRICAN EARTH SCIENCES J2 - J AFR EARTH SCI VL - 225 PY - 2025 PG - 14 SN - 1464-343X DO - 10.1016/j.jafrearsci.2025.105571 UR - https://m2.mtmt.hu/api/publication/35762183 ID - 35762183 LA - English DB - MTMT ER - TY - GEN AU - Ernesto, Edoson Manuel AU - Dobróka, Mihály TI - A Preisach-Based Interpretation of Acoustic Velocity Hysteresis Using Pseudo-Modulus Reconstruction CY - Faculty of Earth and Environmental Science and Engineering, University of Miskolc PY - 2025 UR - https://m2.mtmt.hu/api/publication/36469722 ID - 36469722 LA - English DB - MTMT ER - TY - GEN AU - Ernesto, Edoson Manuel AU - Dobróka, Mihály TI - Porosity hysteresis in Granite and Sandstone Rock Using the Preisach Model CY - Faculty of Earth and Environmental Science and Engineering, University of Miskolc PY - 2025 UR - https://m2.mtmt.hu/api/publication/36493751 ID - 36493751 LA - English DB - MTMT ER - TY - GEN AU - Ernesto, Edoson Manuel AU - Dobróka, Mihály TI - Exploring Stress Dependent acoustic velocity hysteresis in Rocks Insights for physical modeling and Preisach Model. PY - 2025 UR - https://m2.mtmt.hu/api/publication/36493852 ID - 36493852 LA - English DB - MTMT ER - TY - GEN AU - Ernesto, Edoson Manuel AU - Dobróka, Mihály TI - From Stress to Shape: A Geometric Interpretation of Rock Hysteresis CY - Faculty of Earth and Environmental Science and Engineering, University of Miskolc PY - 2025 UR - https://m2.mtmt.hu/api/publication/36493878 ID - 36493878 LA - English DB - MTMT ER - TY - CONF AU - Hassan, Hadeer AU - Dobróka, Mihály ED - Molnár, Dániel ED - Molnár, Dóra TI - IMPACT OF PORE WATER SATURATION ON PRESSURE-DEPENDENT PERMEABILITY IN TIGHT SANDSTONE RESERVOIRS T2 - Tavaszi Szél Konferencia / Spring Wind Conference 2025. Absztrakt kötet PB - Doktoranduszok Országos Szövetsége C1 - Budapest SN - 9786156457738 PY - 2025 SP - 157 EP - 157 PG - 1 UR - https://m2.mtmt.hu/api/publication/36897702 ID - 36897702 LA - English DB - MTMT ER - TY - JOUR AU - Szűcs, Péter AU - Dobróka, Mihály AU - Turai, Endre AU - Szarka, László Csaba AU - Ilyés, Csaba AU - Hemida, Mohamed Hamdy Eid AU - Szabó, Norbert Péter TI - Combined inversion and statistical workflow for advanced temporal analysis of the Nile River’s long term water level records JF - JOURNAL OF HYDROLOGY J2 - J HYDROL VL - 630 PY - 2024 PG - 24 SN - 0022-1694 DO - 10.1016/j.jhydrol.2024.130693 UR - https://m2.mtmt.hu/api/publication/34527979 ID - 34527979 LA - English DB - MTMT ER - TY - JOUR AU - Al Marashly, Omar AU - Dobróka, Mihály TI - Chebyshev polynomial-based Fourier transformation and it’s use in low pass filter of gravity data JF - ACTA GEODAETICA ET GEOPHYSICA J2 - ACTA GEOD GEOPHYS VL - 59 PY - 2024 IS - 2 SP - 159 EP - 181 PG - 23 SN - 2213-5812 DO - 10.1007/s40328-024-00444-z UR - https://m2.mtmt.hu/api/publication/34889369 ID - 34889369 AB - In this paper, we introduce the novel Chebyshev Polynomials Least-Squares Fourier Transformation (C-LSQ-FT) and its robust variant with the Iteratively Reweighted Least-Squares technique (C-IRLS-FT). These innovative techniques for Fourier transformation are predicated on the concept of inversion, and the C-LSQ-FT method establishes an overdetermined inverse problem within the realm of Fourier transformation. However, given the LSQ approach’s vulnerability to data outliers, we note the potential for considerable errors and potentially unrepresentative model estimations. To circumvent these shortcomings, we incorporate Steiner’s Most Frequent Value method into our framework, thereby providing a more reliable alternative. The fusion of the Iteratively Reweighted Least-Squares (IRLS) algorithm with Cauchy-Steiner weights enhances the robustness of our Fourier transformation process, culminating in the C-IRLS-FT method. We use Chebyshev polynomials as the basis functions in both methods, leading to the approximation of continuous Fourier spectra through a finite series of Chebyshev polynomials and their corresponding coefficients. The coefficients were obtained by solving an overdetermined non-linear inverse problem. We validated the performance of both the traditional Discrete Fourier Transform (DFT) and the newly developed C-IRLS-FT through numerical tests on synthetic datasets. The results distinctly exhibited the reduced sensitivity of the C-IRLS-FT method to outliers and dispersed noise, in comparison with the traditional DFT. We leveraged the newly proposed (C-IRLS-FT) technique in the application of low-pass filtering in the context of gravity data. The results corroborate the technique’s robustness and adaptability, making it a promising method for future applications in geophysical data processing. LA - English DB - MTMT ER - TY - CHAP AU - Turainé Vurom, Brigitta AU - Kovácsné Molnár, Judit AU - Dobróka, T. AU - Dobróka, Mihály AU - Nádasi, Endre AU - Szabó, Norbert Péter TI - A Quantitative Model to Describe the Hysteresis of P- and S Acoustic/Seismic Waves T2 - 85th EAGE Annual Conference & Exhibition (including the Workshop Programme) PB - European Association of Petroleum Geoscientists & Engineers CY - Bunnik SN - 9789462824980 PY - 2024 SP - 1 EP - 5 PG - 5 DO - 10.3997/2214-4609.2024101360 UR - https://m2.mtmt.hu/api/publication/34900352 ID - 34900352 LA - English DB - MTMT ER -