@article{MTMT:36858558, title = {Multiexponenciális kőzetfizikai modell a szeizmikus/akusztikus P- és S-hullám jósági tényező nyomásfüggésének leírására}, url = {https://m2.mtmt.hu/api/publication/36858558}, author = {Turainé Vurom, Brigitta and Dobróka, Mihály}, journal-iso = {MAGYAR GEOFIZIKA}, journal = {MAGYAR GEOFIZIKA}, volume = {66}, unique-id = {36858558}, issn = {0025-0120}, year = {2026}, eissn = {2677-1497}, pages = {94-101}, orcid-numbers = {Dobróka, Mihály/0000-0003-3956-2070} } @article{MTMT:35762183, title = {Gravity-based structural and tectonic characterization of the Shendi-Atbara Basin, Central Sudan}, url = {https://m2.mtmt.hu/api/publication/35762183}, author = {Mohieldain, Ali Ahmed and Dobróka, Mihály and Mohammed, Musaab Adam Abbakar and Szabó, Norbert Péter}, doi = {10.1016/j.jafrearsci.2025.105571}, journal-iso = {J AFR EARTH SCI}, journal = {JOURNAL OF AFRICAN EARTH SCIENCES}, volume = {225}, unique-id = {35762183}, issn = {1464-343X}, year = {2025}, eissn = {1879-1956}, orcid-numbers = {Dobróka, Mihály/0000-0003-3956-2070} } @misc{MTMT:36469722, title = {A Preisach-Based Interpretation of Acoustic Velocity Hysteresis Using Pseudo-Modulus Reconstruction}, url = {https://m2.mtmt.hu/api/publication/36469722}, author = {Ernesto, Edoson Manuel and Dobróka, Mihály}, unique-id = {36469722}, year = {2025}, orcid-numbers = {Dobróka, Mihály/0000-0003-3956-2070} } @misc{MTMT:36493751, title = {Porosity hysteresis in Granite and Sandstone Rock Using the Preisach Model}, url = {https://m2.mtmt.hu/api/publication/36493751}, author = {Ernesto, Edoson Manuel and Dobróka, Mihály}, unique-id = {36493751}, year = {2025}, orcid-numbers = {Dobróka, Mihály/0000-0003-3956-2070} } @misc{MTMT:36493852, title = {Exploring Stress Dependent acoustic velocity hysteresis in Rocks Insights for physical modeling and Preisach Model.}, url = {https://m2.mtmt.hu/api/publication/36493852}, author = {Ernesto, Edoson Manuel and Dobróka, Mihály}, unique-id = {36493852}, year = {2025}, orcid-numbers = {Dobróka, Mihály/0000-0003-3956-2070} } @misc{MTMT:36493878, title = {From Stress to Shape: A Geometric Interpretation of Rock Hysteresis}, url = {https://m2.mtmt.hu/api/publication/36493878}, author = {Ernesto, Edoson Manuel and Dobróka, Mihály}, unique-id = {36493878}, year = {2025}, orcid-numbers = {Dobróka, Mihály/0000-0003-3956-2070} } @CONFERENCE{MTMT:36897702, title = {IMPACT OF PORE WATER SATURATION ON PRESSURE-DEPENDENT PERMEABILITY IN TIGHT SANDSTONE RESERVOIRS}, url = {https://m2.mtmt.hu/api/publication/36897702}, author = {Hassan, Hadeer and Dobróka, Mihály}, booktitle = {Tavaszi Szél Konferencia / Spring Wind Conference 2025. Absztrakt kötet}, unique-id = {36897702}, year = {2025}, pages = {157-157}, orcid-numbers = {Dobróka, Mihály/0000-0003-3956-2070} } @article{MTMT:34527979, title = {Combined inversion and statistical workflow for advanced temporal analysis of the Nile River’s long term water level records}, url = {https://m2.mtmt.hu/api/publication/34527979}, author = {Szűcs, Péter and Dobróka, Mihály and Turai, Endre and Szarka, László Csaba and Ilyés, Csaba and Hemida, Mohamed Hamdy Eid and Szabó, Norbert Péter}, doi = {10.1016/j.jhydrol.2024.130693}, journal-iso = {J HYDROL}, journal = {JOURNAL OF HYDROLOGY}, volume = {630}, unique-id = {34527979}, issn = {0022-1694}, year = {2024}, eissn = {1879-2707}, orcid-numbers = {Dobróka, Mihály/0000-0003-3956-2070; Ilyés, Csaba/0000-0002-5328-8023} } @article{MTMT:34889369, title = {Chebyshev polynomial-based Fourier transformation and it’s use in low pass filter of gravity data}, url = {https://m2.mtmt.hu/api/publication/34889369}, author = {Al Marashly, Omar and Dobróka, Mihály}, doi = {10.1007/s40328-024-00444-z}, journal-iso = {ACTA GEOD GEOPHYS}, journal = {ACTA GEODAETICA ET GEOPHYSICA}, volume = {59}, unique-id = {34889369}, issn = {2213-5812}, abstract = {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.}, year = {2024}, eissn = {2213-5820}, pages = {159-181}, orcid-numbers = {Dobróka, Mihály/0000-0003-3956-2070} } @inproceedings{MTMT:34900352, title = {A Quantitative Model to Describe the Hysteresis of P- and S Acoustic/Seismic Waves}, url = {https://m2.mtmt.hu/api/publication/34900352}, author = {Turainé Vurom, Brigitta and Kovácsné Molnár, Judit and Dobróka, T. and Dobróka, Mihály and Nádasi, Endre and Szabó, Norbert Péter}, booktitle = {85th EAGE Annual Conference & Exhibition (including the Workshop Programme)}, doi = {10.3997/2214-4609.2024101360}, unique-id = {34900352}, year = {2024}, pages = {1-5}, orcid-numbers = {Dobróka, Mihály/0000-0003-3956-2070; Nádasi, Endre/0000-0001-5325-6657} }