TY - JOUR AU - Szarka, László Csaba AU - Ádám, Antal AU - Novák, Attila AU - Rubóczki, Tibor AU - Lemperger, István AU - Prácser, Ernő AU - Szalai, Sándor AU - Wesztergom, Viktor AU - Kiss, János AU - László, Zilahi-Sebess AU - Károly, Rádi AU - Fancsik, Tamás AU - Turai, Endre AU - Szabó, Norbert Péter AU - Nádasi, Endre AU - Baracza, Mátyás Krisztián AU - Vass, Péter AU - Szűcs, Péter AU - Dobróka, Mihály TI - Hungarian Contribution in EM methods (2019-2022) - IAGA Division VI : Electromagnetic Induction in the Earth and Planetary Bodies JF - GEOMATIKAI KÖZLEMÉNYEK / PUBLICATIONS IN GEOMATICS J2 - GEOMAT KÖZL VL - 25 PY - 2023 SP - 87 EP - 92 PG - 6 SN - 1419-6492 UR - https://m2.mtmt.hu/api/publication/34059446 ID - 34059446 AB - 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. LA - English DB - MTMT ER - TY - CHAP AU - Ádám, Antal AU - Szarka, László Csaba ED - Gupta, HK. TI - Geoelectromagnetism T2 - Encyclopedia of Solid Earth Geophysics PB - Springer Netherlands CY - Cham SN - 9789048187027 T3 - Encyclopedia of Earth Sciences Series, ISSN 1388-4360 PY - 2020 SP - 1 EP - 12 PG - 12 DO - 10.1007/978-3-030-10475-7_129-1 UR - https://m2.mtmt.hu/api/publication/34289642 ID - 34289642 LA - English DB - MTMT ER - TY - JOUR AU - Ádám, Antal AU - Szarka, László Csaba AU - Novák, Attila AU - Wesztergom, Viktor TI - Key results on deep electrical conductivity anomalies in the Pannonian Basin (PB), and their geodynamic aspects JF - ACTA GEODAETICA ET GEOPHYSICA J2 - ACTA GEOD GEOPHYS VL - 52 PY - 2017 IS - 2 SP - 205 EP - 228 PG - 24 SN - 2213-5812 DO - 10.1007/s40328-016-0192-2 UR - https://m2.mtmt.hu/api/publication/3249956 ID - 3249956 N1 - Cited By :10 Export Date: 27 April 2023 Correspondence Address: Ádám, A.; Geodetic and Geophysical Institute, Hungary; email: adam@ggki.hu AB - In the first part of the paper a brief introduction is given (a) to the magnetotelluric (MT) and magnetovariation (MV) soundings, (b) to electrical resistivity of minerals and rocks, and their dependence on temperature and fluid content. The basic geoelectric model in the Pannonian Basin is a (linear) tectonic zone (“dike”) and a series of dikes. In the second part the main crustal and mantle conductivity anomalies observed in the Pannonian Basin (PB) are summarized: (a) deep conductive crustal fractures and their relation to the occurrence of the earthquakes, boundary of the megablock(s) etc., (b) middle crustal conductors as indicators of decrease in stress and seismic activity depending on thermal regime, (c) the conductive asthenosphere and its lateral change in the PB in connection with the heat flow and tectonics. The general relation between the depth of the conductive asthenosphere and the regional heat flow is also presented, (d) MT anisotropy of the resistivity distribution in the PB and its tectonic explanation based on Haas’s tectonic map (2001, Fig. 1). All these observations and conclusions are considered as results for further investigations. © 2016, Akadémiai Kiadó. LA - English DB - MTMT ER - TY - JOUR AU - Ádám, Antal AU - Novák, Attila AU - Szarka, László Csaba AU - Wesztergom, Viktor TI - ELECTROMAGNETIC INDUCTION (EM) STUDIES BY MAGNETOTELLURICS – IAGA DIVISION 1. INTERNAL MAGNETIC FIELDS JF - GEOMATIKAI KÖZLEMÉNYEK / PUBLICATIONS IN GEOMATICS J2 - GEOMAT KÖZL VL - 18 PY - 2015 IS - 1 SP - 53 EP - 54 PG - 2 SN - 1419-6492 UR - https://m2.mtmt.hu/api/publication/2924064 ID - 2924064 LA - English DB - MTMT ER - TY - CONF AU - Klébesz, Rita AU - Ádám, Antal AU - Novák, Attila AU - Szabó, Cs AU - Wesztergom, Viktor TI - Relation between xenoliths and magnetotelluric (MT) conductors in the Pannonian Basin (PB) - Short review T2 - EGU General Assembly 2014: Conference Abstracts T3 - Geophysical Research Abstracts ; 16. PY - 2014 PG - 1 UR - https://m2.mtmt.hu/api/publication/2807564 ID - 2807564 LA - English DB - MTMT ER - TY - CONF AU - Novák, Attila AU - Klébesz, Rita AU - Szabó, Cs AU - Wesztergom, Viktor AU - Patkó, Levente AU - Liptai, Nóra AU - Ádám, Antal AU - Semenov, V Y AU - Lemperger, István AU - Kis, Árpád AU - Gribovszki, Katalin Eszter TI - Combined geophysical (magnetotellurics) and geochemical results for determination of the Lithosphere-Asthenosphere Boundary (LAB) beneath the Nógrád-Gömör Volcanic Field T2 - 22 nd EM Induction Workshop PY - 2014 PG - 4 UR - https://m2.mtmt.hu/api/publication/2786083 ID - 2786083 LA - English DB - MTMT ER - TY - CONF AU - Novák, Attila AU - Harangi, Szabolcs AU - Kiss, Balázs AU - Seghedi, I AU - Haranginé Lukács, Réka AU - Szarka, László Csaba AU - Wesztergom, Viktor AU - Ádám, Antal AU - Lemperger, István TI - 2-D and 3-D magnetotelluric modeling to support the petrological result for the nature of the magma storage system beneath the Ciomadul volcano (SE Carpathians) T2 - 22 nd EM Induction Workshop PY - 2014 PG - 4 UR - https://m2.mtmt.hu/api/publication/2786082 ID - 2786082 LA - English DB - MTMT ER - TY - CONF AU - Novák, Attila AU - Klébesz, Rita AU - Szabó, Cs AU - Patkó, Levente AU - Liptai, Nóra AU - Kovács, Zoltán AU - Wesztergom, Viktor AU - Ádám, Antal AU - Lemperger, István AU - Kis, Árpád AU - Molnár, Cs AU - Szendrői, Judit TI - Determination of the Lithosphere-Asthenosphere Boundary (LAB) beneath the Nógrád-Gömör Volcanic Field by combined geophysical (magnetotellurics) and geochemical methods T2 - EGU General Assembly 2014: Conference Abstracts T3 - Geophysical Research Abstracts ; 16. PY - 2014 UR - https://m2.mtmt.hu/api/publication/2726132 ID - 2726132 AB - Understanding the fundamental role of LAB is substantial for the investigation of the geodynamic evolution of the Earth. The LAB depths can be estimated by different geophysical methods (seismology, magnetotellurics), however these depths are controversial. It has been emphasized in the literature that combined geophysical and geochemical approach may lead to better understanding of these depths. The magnetotellurics (MT) is very powerful method because it indicates the sudden increase in conductivity at the LAB. The mantle xenoliths (small fragments of the lithospheric mantle) provide the information to reconstruct their P-T paths. In the Carpathian-Pannon region (CPR) five, well-studied occurrences of mantle xenoliths-bearing Plio-Pleistocene alkali basalts are known, which makes the CPR a very promising area for investigating the inconsistency in the LAB estimates. As a test area Nógrád-Gömör Volcanic Field (NGVF) has been chosen. The host basalt erupted at the NGVF collected mantle xenoliths from a small volume of the upper mantle in a depth of about 40-50 km. The major element geochemistry of the studied xenoliths indicates that most of them represent common lherzolitic mantle, whereas others show strong wehrlitisation process. This metasomatism is supposed to be caused by a migrating mafic melt agent, resulting in the transformation of a large portion of lherzolite to wehrlite beneath the NGVF, possibly just below the crust mantle boundary. In aim to detect the LAB at the research area and find the correlation with petrologic and geochemical results we carried out MT deep soundings. The campaign contained 12 long period MT stations with 3-5 km average spacing along 60 km long profile SSE to NNW direction. This presentation summarizes the preliminary results of the combined geophysical and geochemical approaches to determine the LAB depths. LA - English DB - MTMT ER - TY - CONF AU - Novák, Attila AU - Ádám, Antal AU - Prácser, Ernő TI - Indication of meta-anthracite by magnetotellurics in the Köszeg-Rechnitz Penninic window T2 - EGU General Assembly 2013: Conference Abstracts T3 - Geophysical Research Abstracts ; Vol.15. PY - 2013 UR - https://m2.mtmt.hu/api/publication/2475214 ID - 2475214 LA - English DB - MTMT ER - TY - JOUR AU - Ádám, Antal AU - Novák, Attila AU - Prácser, Ernő AU - Szarka, László Csaba AU - Wesztergom, Viktor TI - Indication of meta-anthracite by magnetotellurics in the Kőszeg-Rechnitz Penninic window: a test area JF - ACTA GEODAETICA ET GEOPHYSICA J2 - ACTA GEOD GEOPHYS VL - 48 PY - 2013 IS - 3 SP - 281 EP - 292 PG - 12 SN - 2213-5812 DO - 10.1007/s40328-013-0028-2 UR - https://m2.mtmt.hu/api/publication/2422060 ID - 2422060 AB - One of the Penninic Nappes is the KAszeg-Rechnitz (K-R) tectonic window at the Eastern end of the Eastern Alps. It has a complicated metamorphic history from the Jurassic time. The organic material of the Penninic Ocean was transformed to electrically conductive meta-anthracite. Its amount in the chalcophyllite is estimated by geochemists to 0.2 per cent. Taking this conducting structure as a test area pilot deep magnetotelluric (MT) soundings have been carried out and we determined the structure of the conductivity anomaly due to 0.2 per cent meta anthracite in the K-R window and its surroundings the different kinds of MT distortions as lateral (side) effect of the conductor appearing in the crust and mantle the most probable depth of the conductive asthenosphere at the border of the Pannonian Basin (having extreme shallow asthenosphere). The obtained similar to 140 km depth is in correlation with value of the asthenospheric map based mainly on seismic data. LA - English DB - MTMT ER -