@article{MTMT:34528126, title = {Archeogeophysical application of non-traditional geoelectric arrays. a case study in a north-east Hungary site}, url = {https://m2.mtmt.hu/api/publication/34528126}, author = {Kárpi, Marcell and Baracza, Mátyás Krisztián and Szalai, Sándor}, doi = {10.47833/2024.1.ENG.001}, journal-iso = {GRADUS}, journal = {GRADUS}, volume = {11}, unique-id = {34528126}, abstract = {With the continuous development of multielectrode geoelectrical tomography (ERT) as a geophysical technique, we became able to detect small size targets. In this paper, we present ERT interpretation results obtained at an archaeological site in Szendrő village in northeastern Hungary, where a 17th century fortress once stood. Several historical notes and a collapsed entrance recall the existence of tunnels under the fortress and a water well of uncertain depth. To detect these structures, geoelectrical multielectrode measurements were carried out using conventional and quasi-null arrays. The quasi-null array applies the arrangement of the current (A and B) and potential electrodes (M and N) in a special way, i.e., the electrodes A, M, B, N follow each other in line in special distances from each other. The horizontal sensitivity of the resistivity profiling method using these types of arrays has been proven to be better than that of the Wenner or other conventional arrays. The comparative study aims not just to investigate the archeological features, but to test the sensitivity of the non-traditional quasi-null arrays to these two-dimensional inhomogeneities. As a result, the optimal array can be chosen, and the identification and delineation of shallow structures can be made more reliably. In this paper, we present the very first archeogeophysical field measurements carried out by the gamma quasi null array (γqnull).}, year = {2024}, eissn = {2064-8014} } @article{MTMT:34399693, title = {Fracture system characterization by Pressure Probe}, url = {https://m2.mtmt.hu/api/publication/34399693}, author = {Szalai, Sándor and Szűcs, Péter and Lemperger, István and Zubair, M and Metwaly, M and Gribovszki, Katalin Eszter and Baracza, Mátyás Krisztián}, doi = {10.3311/PPci.19916}, journal-iso = {PERIOD POLYTECH CIV ENG}, journal = {PERIODICA POLYTECHNICA-CIVIL ENGINEERING}, volume = {68}, unique-id = {34399693}, issn = {0553-6626}, abstract = {Pressure Probe (PreP) is in effect a simplified penetrometer: it measures the mechanical resistivity of the soil at shallow depths dropping the probe always from the same height. The resolution of this technique is very good. It is able to detect e.g., fractures due to their decreased mechanical resistance if they are covered, but in a shallow depth with a reasonable sampling distance. An example will be demonstrated where fracture system of a slowly-moving landslide was characterized enabling also its delineation. In spite of that its maximal penetration is only about 0.5 m it may also give information from remarkable depths in case if fractures reach close to the surface indicating the borders of geological structures in larger depth. An example from India will be shown to present such results. All results have been verified by geoelectric measurements. PreP may also indicate any kind of hidden holes indirectly.}, year = {2024}, eissn = {1587-3773}, pages = {358-363}, orcid-numbers = {Gribovszki, Katalin Eszter/0000-0003-2577-0127} } @article{MTMT:34059446, title = {Hungarian Contribution in EM methods (2019-2022) - IAGA Division VI : Electromagnetic Induction in the Earth and Planetary Bodies}, url = {https://m2.mtmt.hu/api/publication/34059446}, author = {Szarka, László Csaba and Ádám, Antal and Novák, Attila and Rubóczki, Tibor and Lemperger, István and Prácser, Ernő and Szalai, Sándor and Wesztergom, Viktor and Kiss, János and László, Zilahi-Sebess and Károly, Rádi and Fancsik, Tamás and Turai, Endre and Szabó, Norbert Péter and Nádasi, Endre and Baracza, Mátyás Krisztián and Vass, Péter and Szűcs, Péter and Dobróka, Mihály}, journal-iso = {GEOMAT KÖZL}, journal = {GEOMATIKAI KÖZLEMÉNYEK / PUBLICATIONS IN GEOMATICS}, volume = {25}, unique-id = {34059446}, issn = {1419-6492}, abstract = {The purpose of the journal is to provide the home researchers and experts a forum to publish, mainly in Hungarian language, their new scientific results in the field of geosciences (geodesy, photogrammetry, geoinformatics, physical geodesy, geophysics, Earth magnetism, geodynamics, research of the inner structure of the Earth and the physics of its troposphere and solar-terrestrial environment) obtained from the analysis of spatial-temporal data using the methods of geomatics.}, year = {2023}, pages = {87-92}, orcid-numbers = {Kiss, János/0000-0001-8589-1364; Nádasi, Endre/0000-0001-5325-6657; Dobróka, Mihály/0000-0003-3956-2070} } @inproceedings{MTMT:33758323, title = {A földi magnetoszféra egy év hosszú magnetohidrodinamikai szimulációjánakösszehasonlítása Cluster mérésekkel}, url = {https://m2.mtmt.hu/api/publication/33758323}, author = {Facskó, Gábor István and David, Sibeck and Ilja, Honkonen and Bór, József and German, Farinas Perez and Timár, Anikó and Yuri, Shprits and Pyry, Peitso and Laura, Degener and Eija, Tanskanen and Chandrasekhar, Anekallu and Szalai, Sándor and Kis, Árpád and Wesztergom, Viktor and Madár, Ákos and Biró, Nikolett and Kobán, Gergely and Illyés, András and Lkhagvadorj, Munkhjargal}, booktitle = {Magyar Űrkutatási Fórum 2021 - Válogatott közlemények}, unique-id = {33758323}, year = {2023}, orcid-numbers = {Facskó, Gábor István/0000-0001-9502-2816} } @article{MTMT:33532115, title = {Improving ERT Imaging of Small-Size 2D Targets Using Different Strategies}, url = {https://m2.mtmt.hu/api/publication/33532115}, author = {Szalai, Sándor and Baracza, Mátyás Krisztián and Kárpi, Marcell and Szűcs, Péter and Metwaly, M. and Turai, Endre and Facskó, Gábor István and Zubair, M. and Szarka, László Csaba and Gribovszki, Katalin Eszter}, doi = {10.1007/s00024-022-03204-8}, journal-iso = {PURE APPL GEOPHYS}, journal = {PURE AND APPLIED GEOPHYSICS}, volume = {180}, unique-id = {33532115}, issn = {0033-4553}, year = {2023}, eissn = {1420-9136}, pages = {157-185}, orcid-numbers = {Facskó, Gábor István/0000-0001-9502-2816; Gribovszki, Katalin Eszter/0000-0003-2577-0127} } @article{MTMT:33560493, title = {Geomágneses megfigyelő rendszer a Széchenyi István Geofizikai Obszervatóriumban}, url = {https://m2.mtmt.hu/api/publication/33560493}, author = {Lemperger, István and Szendrői, Judit and Szabó, Csongor and Kuslits, Lukács and Kis, Árpád and Szalai, Sándor and Molnár, Csaba and Wesztergom, Viktor}, doi = {10.55856/gok2020.4}, journal-iso = {Geofizikai Obszervatóriumi Közlemények}, journal = {Geofizikai Obszervatóriumi Közlemények}, volume = {2020}, unique-id = {33560493}, abstract = {A Széchenyi István Geofizikai Obszervatóriumban (SZIGO) már több, mint hat évtizede folyik a felszíni geoelektromos és geomágneses tér megfigyelése. Az Obszervatórium a geomágneses megfigyelő állomásokat tömörítő nemzetközi hálózat, az INTERMAGNET egyik legjobb minősítéssel kitüntetett tagja, melyet a folyamatos és nagy pontosságú adatszolgáltatás révén érdemelt ki (https://www.intermagnet.org/). A geomágneses megfigyelő rendszer nemrégiben újult meg, illetve egészült ki egy redundáns digitalizáló-adatgyűjtő-szerver lánccal, melynek révén a fluxgate magnetométer analóg jelét két független rendszer digitalizálja, rendezi ASCII fájlokba, valamint továbbítja egy-egy adatszerveren telepített SQL adatbázisba. A geomágneses indukció révén az előbbihez szervesen kapcsolódó fizikai mennyiség, a geoelektromos tér mérésére szolgáló rendszer a közeljövőben szintén megújul, melynek eredményeképpen egy nagyobb dinamikatartományt, jobb felbontásban leképező rendszer kerül beüzemelésre. Az alábbiakban az újonnan telepített geomágneses mérőrendszer kerül bemutatásra, valamint néhány, az új rendszerrel, az elmúlt 12 hónapban regisztrált SSC esemény.}, year = {2022}, eissn = {2939-5054}, pages = {28-36} } @{MTMT:32897108, title = {Determination of Parameter Sensitivity Maps of Surface Nonlinear and Focussed Geoelectric Arrays}, url = {https://m2.mtmt.hu/api/publication/32897108}, author = {Szalai, Sándor and Szarka, László Csaba and Baracza, Mátyás Krisztián and Szűcs, Péter}, booktitle = {Current Advances in Geography, Environment and Earth Sciences Vol. 4}, doi = {10.9734/bpi/cagees/v4/15827D}, unique-id = {32897108}, year = {2022}, pages = {59-67} } @{MTMT:32897093, title = {Assessment of Landslide by Its Fracture System using Electric Resistivity Tomography and Pressure Probe Method}, url = {https://m2.mtmt.hu/api/publication/32897093}, author = {Szokoli, Kitti and Szarka, László Csaba and Metwaly, M. and Kalmár, János and Prácser, Ernő and Baracza, Mátyás Krisztián and Szűcs, Péter and Szalai, Sándor}, booktitle = {Current Advances in Geography, Environment and Earth Sciences Vol. 4}, doi = {10.9734/bpi/cagees/v4/1921B}, unique-id = {32897093}, year = {2022}, pages = {47-58} } @{MTMT:32897084, title = {Determination of Parameter Sensitivity Maps of Surface Linear Geoelectric Arrays}, url = {https://m2.mtmt.hu/api/publication/32897084}, author = {Szalai, Sándor and Szarka, László Csaba and Baracza, Mátyás Krisztián and Szűcs, Péter}, booktitle = {Current Advances in Geography, Environment and Earth Sciences Vol. 4}, doi = {10.9734/bpi/cagees/v4/15826D}, unique-id = {32897084}, year = {2022}, pages = {30-46} } @CONFERENCE{MTMT:32632349, title = {Estimation and Confirmation of Electromagnetic Attenuation and Resistivity of MáTra Mountains Rock}, url = {https://m2.mtmt.hu/api/publication/32632349}, author = {Lemperger, István and Novák, Attila and Ván, Péter and Wesztergom, Viktor and Lévai, Péter and Kis, Árpád and Szalai, Sándor and Mlynarczyk, J.}, booktitle = {THE NEAR SURFACE GEOSCIENCE - CONFERENCE & EXHIBITION 2021}, doi = {10.3997/2214-4609.202120051}, unique-id = {32632349}, year = {2021}, orcid-numbers = {Ván, Péter/0000-0002-9396-4073} }