@article{MTMT:31029800,
	title = {Granulometric properties of particles in Upper Miocene sandstones from thin sections, Szolnok Formation, Hungary},
	url = {https://m2.mtmt.hu/api/publication/31029800},
	author = {Király, Csilla and Falus, György and Gresina, Fruzsina and Jakab, Gergely Imre and Szalai, Zoltán and Varga, György},
	doi = {10.15201/hungeobull.68.4.2},
	journal-iso = {HUNG GEOGR BULL (2009-)},
	journal = {HUNGARIAN GEOGRAPHICAL BULLETIN (2009-)},
	volume = {68},
	unique-id = {31029800},
	issn = {2064-5031},
	keywords = {sandstones; Upper Miocene},
	year = {2019},
	eissn = {2064-5147},
	pages = {341-353},
	orcid-numbers = {Jakab, Gergely Imre/0000-0001-5424-1983; Szalai, Zoltán/0000-0001-5267-411X; Varga, György/0000-0003-4784-6372}
}

@article{MTMT:3280132,
	title = {Interpretation of sedimentary (sub)populations extracted from grain size distributions of Central European loess-paleosol series},
	url = {https://m2.mtmt.hu/api/publication/3280132},
	author = {Varga, György and Újvári, Gábor and Kovács, János},
	doi = {10.1016/j.quaint.2017.09.021},
	journal-iso = {QUATERN INT},
	journal = {QUATERNARY INTERNATIONAL},
	volume = {502},
	unique-id = {3280132},
	issn = {1040-6182},
	abstract = {Grain size proxies of aeolian dust deposits have widely been applied in environmental and sedimentary studies. However, large body of research papers are not taking into consideration that a complex grain size distribution curve cannot be an indicator of a single one environmental factor (e.g. wind speed/strength, transportation distance, aridity).
		
		The aim of the present paper is to discuss the main differences of frequently used statistical methods and to provide possible interpretations of the results by applying these various approaches on the high-resolution loess-paleosol profile of Dunaszekcso, South Hungary (Central Europe). Beside single statistical descriptors (mean, median, mode) of grain size and simple indices of size-fraction ratios (U-ratio, Grain Size Index), some more complex algorithms were also used in our paper. The applied parametric curve-fitting, end-member modelling and hierarchical cluster analysis techniques are using the whole spectrum of the measured grain size distributions and provide a more reliable and more representative results even in case of small scale variations.
		
		According to our findings, approaches which provide direct linkage among simple statistical descriptors and single atmospheric or other environmental elements are rather oversimplified as properties aeolian dust deposits are influenced by the integrated effects of several concurrent processes. Differences of more complex decomposition methods arise from the different approach and scope. End-members are determined from the unmixing based on the covariance structure of the whole grain size data-series of the section, while the parametric curve-fitting is based on the one-by-one deconvolution of the grain size distribution curves. End-members of loess-paleosol samples are regarded as representation of the average dust grain size distribution of various temporal sediment clusters of seasonal or other short-term intervals, while (sub) populations by parametric curve-fitting are proposed to illustrate process-related elements of background and dust storm depositional components for each sample. Results of cluster analysis represent similar grouping conditions as end-member modelling with a reduced sedimentary and genetically meaning. (C) 2017 Elsevier Ltd and INQUA. All rights reserved.},
	year = {2019},
	eissn = {1873-4553},
	pages = {60-70},
	orcid-numbers = {Varga, György/0000-0003-4784-6372; Újvári, Gábor/0000-0002-2816-6155; Kovács, János/0000-0001-7742-5515}
}

@article{MTMT:30710244,
	title = {On the reliability and comparability of laser diffraction grain size measurements of paleosols in loess records},
	url = {https://m2.mtmt.hu/api/publication/30710244},
	author = {Varga, György and Gresina, Fruzsina and Újvári, Gábor and Kovács, János and Szalai, Zoltán},
	doi = {10.1016/j.sedgeo.2019.05.011},
	journal-iso = {SEDIMENT GEOL},
	journal = {SEDIMENTARY GEOLOGY},
	volume = {389},
	unique-id = {30710244},
	issn = {0037-0738},
	year = {2019},
	eissn = {1879-0968},
	pages = {42-53},
	orcid-numbers = {Varga, György/0000-0003-4784-6372; Újvári, Gábor/0000-0002-2816-6155; Kovács, János/0000-0001-7742-5515; Szalai, Zoltán/0000-0001-5267-411X}
}

@article{MTMT:3357510,
	title = {Granulometric characterization of paleosols in loess series by automated static image analysis},
	url = {https://m2.mtmt.hu/api/publication/3357510},
	author = {Varga, György and Kovács, János and Szalai, Zoltán and Cserháti, Csaba and Újvári, Gábor},
	doi = {10.1016/j.sedgeo.2018.04.001},
	journal-iso = {SEDIMENT GEOL},
	journal = {SEDIMENTARY GEOLOGY},
	volume = {370},
	unique-id = {3357510},
	issn = {0037-0738},
	keywords = {SEQUENCE; sediment; Sand; grain size; DEPOSITS; PARTICLE-SHAPE; records; PALEOSOLS; loess; Particle shape; laser diffraction; image analyses; WIND TRANSPORT; QUARTZ SILT GRAINS; GRAIN-SIZE MEASUREMENTS},
	year = {2018},
	eissn = {1879-0968},
	pages = {1-14},
	orcid-numbers = {Varga, György/0000-0003-4784-6372; Kovács, János/0000-0001-7742-5515; Szalai, Zoltán/0000-0001-5267-411X; Újvári, Gábor/0000-0002-2816-6155}
}

@article{MTMT:3394402,
	title = {Identification of Saharan dust particles in Pleistocene dune sand- paleosol sequences of Fuerteventura (Canary Islands)},
	url = {https://m2.mtmt.hu/api/publication/3394402},
	author = {Varga, György and Roettig, C-B},
	doi = {10.15201/hungeobull.67.2.2},
	journal-iso = {HUNG GEOGR BULL (2009-)},
	journal = {HUNGARIAN GEOGRAPHICAL BULLETIN (2009-)},
	volume = {67},
	unique-id = {3394402},
	issn = {2064-5031},
	year = {2018},
	eissn = {2064-5147},
	pages = {121-141},
	orcid-numbers = {Varga, György/0000-0003-4784-6372}
}

@article{MTMT:3238351,
	title = {Effects of particle size on the attenuated total reflection spectrum of minerals},
	url = {https://m2.mtmt.hu/api/publication/3238351},
	author = {Udvardi, Beatrix and Kovács, István János and Fancsik, Tamás and Kónya, Péter and Batori, M and Stercel, F and Falus, György and Szalai, Zoltán},
	doi = {10.1177/0003702816670914},
	journal-iso = {APPL SPECTROSC},
	journal = {APPLIED SPECTROSCOPY},
	volume = {71},
	unique-id = {3238351},
	issn = {0003-7028},
	abstract = {This study focuses on particle size effect on monomineralic powders recorded using attenuated total reflection Fourier transform infrared (ATR FT-IR) spectroscopy. Six particle size fractions of quartz, feldspar, calcite, and dolomite were prepared (<2, 2-4, 4-8, 8-16, 16-32, and 32-63 mu m). It is found that the width, intensity, and area of bands in the ATR FT-IR spectra of minerals have explicit dependence on the particle size. As particle size increases, the intensity and area of IR bands usually decrease while the width of bands increases. The band positions usually shifted to higher wavenumbers with decreasing particle size. Infrared spectra of minerals are the most intensive in the particle size fraction of 2-4 mu m. However, if the particle size is very small (<2 mu m), due to the wavelength and penetration depth of the IR light, intensity decreases. Therefore, the quantity of very fine-grained minerals may be underestimated compared to the coarser phases. A nonlinear regression analysis of the data indicated that the average coefficients and indices of the power trend line equation imply a very simplistic relationship between median particle diameter and absorbance at a given wavenumber. It is concluded that when powder samples with substantially different particle size are compared, as in regression analysis for modal predictions using ATR FT-IR, it is also important to report the grain size distribution or surface area of samples. The band area of water (3000-3620cm(-1)) is similar in each mineral fraction, except for the particles below 2 mu m. It indicates that the finest particles could have disproportionately more water adsorbed on their larger surface area. Thus, these higher wavenumbers of the ATR FT-IR spectra may be more sensitive to this spectral interference if the number of particles below 2 mu m is considerable. It is also concluded that at least a proportion of the moisture could be very adhesive to the particles due to the band shift towards lower wavenumbers in the IR range of 3000-3620cm(-1).},
	keywords = {QUANTITATIVE-ANALYSIS; SYSTEMS; water content; MINERALS; particle size; infrared spectroscopy; Quartz; Refractive index; ATR-FTIR spectroscopy; ATR FT-IR; Attenuated total reflection Fourier transform infrared},
	year = {2017},
	eissn = {1943-3530},
	pages = {1157-1168},
	orcid-numbers = {Kovács, István János/0000-0002-3488-3716; Szalai, Zoltán/0000-0001-5267-411X}
}

@article{MTMT:3011427,
	title = {The physics of wind-blown loess: Implications for grain size proxy interpretations in Quaternary paleoclimate studies},
	url = {https://m2.mtmt.hu/api/publication/3011427},
	author = {Újvári, Gábor and Kok, J F and Varga, György and Kovács, János},
	doi = {10.1016/j.earscirev.2016.01.006},
	journal-iso = {EARTH-SCI REV},
	journal = {EARTH-SCIENCE REVIEWS},
	volume = {154},
	unique-id = {3011427},
	issn = {0012-8252},
	abstract = {Loess deposits are recorders of aeolian activity during past glaciations. Since the size distribution of loess deposits depends on distance to the dust source, and environmental conditions at the source, during transport, and at deposition, loess particle size distributions and derived statistical measures are widely used proxies in Quaternary paleoenvironmental studies. However, the interpretation of these proxies often only considers dust transport processes. To move beyond such overly simplistic proxy interpretations, and toward proxy interpretations that consider the range of environmental processes that determine loess particle size distribution variations we provide a comprehensive review on the physics of dust particle mobilization and deposition. Furthermore, using high-resolution bulk loess and quartz grain size datasets from a last glacial/interglacial sequence, we show that, because grain size distributions are affected by multiple, often stochastic processes, changes in these distributions over time allow multiple interpretations for the driving processes. Consequently, simplistic interpretations of proxy variations in terms of only one factor (e.g. wind speed) are likely to be inaccurate. Nonetheless using loess proxies to understand temporal changes in the dust cycle and environmental parameters requires (i) a careful site selection, to minimize the effects of topography and source distance, and (ii) the joint use of bulk and quartz grain size proxies, together with high resolution mass accumulation rate calculations if possible. © 2016 Elsevier B.V.},
	keywords = {Quaternary; Quartz; wind; loess; Grain size proxy; Aeolian dynamics},
	year = {2016},
	eissn = {1872-6828},
	pages = {247-278},
	orcid-numbers = {Újvári, Gábor/0000-0002-2816-6155; Varga, György/0000-0003-4784-6372; Kovács, János/0000-0001-7742-5515}
}

@article{MTMT:2899755,
	title = {Comparison of particle-size analyzing laboratory methods},
	url = {https://m2.mtmt.hu/api/publication/2899755},
	author = {Centeri, Csaba and Jakab, Gergely Imre and Szabó, Szilárd and Farsang, Andrea and Barta, Károly and Szalai, Zoltán and Biró, Zsolt},
	journal-iso = {ENVIRON ENG MANAG J},
	journal = {ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL},
	volume = {14},
	unique-id = {2899755},
	issn = {1582-9596},
	year = {2015},
	eissn = {1843-3707},
	pages = {1125-1135},
	orcid-numbers = {Centeri, Csaba/0000-0001-6590-4850; Jakab, Gergely Imre/0000-0001-5424-1983; Szabó, Szilárd/0000-0002-2670-7384; Farsang, Andrea/0000-0002-7873-5256; Szalai, Zoltán/0000-0001-5267-411X}
}

@article{MTMT:2885054,
	title = {Soil erodibility calculations based on different particle size distribution measurements},
	url = {https://m2.mtmt.hu/api/publication/2885054},
	author = {Centeri, Csaba and Szalai, Zoltán and Jakab, Gergely Imre and Barta, Károly and Farsang, Andrea and Szabó, Szilárd and Biró, Zsolt},
	doi = {10.15201/hungeobull.64.1.2},
	journal-iso = {HUNG GEOGR BULL (2009-)},
	journal = {HUNGARIAN GEOGRAPHICAL BULLETIN (2009-)},
	volume = {64},
	unique-id = {2885054},
	issn = {2064-5031},
	year = {2015},
	eissn = {2064-5147},
	pages = {17-23},
	orcid-numbers = {Centeri, Csaba/0000-0001-6590-4850; Szalai, Zoltán/0000-0001-5267-411X; Jakab, Gergely Imre/0000-0001-5424-1983; Farsang, Andrea/0000-0002-7873-5256; Szabó, Szilárd/0000-0002-2670-7384}
}