TY - JOUR AU - Balázs, Boglárka AU - Bíró, Tibor AU - Dyke, Gareth AU - Singh, Sudhir Kumar AU - Szabó, Szilárd TI - Extracting water-related features using reflectance data and principal component analysis of Landsat images JF - HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES J2 - HYDROLOG SCI J VL - 63 PY - 2018 IS - 2 SP - 269 EP - 284 PG - 16 SN - 0262-6667 DO - 10.1080/02626667.2018.1425802 UR - https://m2.mtmt.hu/api/publication/3313572 ID - 3313572 AB - This study aimed to map water features using a Landsat image rather than traditional land cover. We involved the original bands, spectral indices and principal components (PCs) of a principal component analysis (PCA) as input data, and performed random forest (RF) and support vector machine (SVM) classification with water, saturated soil and non-water categories. The aim was to compare the efficiency of the results based on various input data. Original bands provided 93% overall accuracy (OA) and bands 4-5-7 were the most informative in this analysis. Except for MNDWI (modified normalized differenced water index, with 98% OA), the performance of all water indices was between 60 and 70% (OA). The PCA-based approach conducted on the original bands resulted in the most accurate identification of all classes (with only 1% error in the case of water bodies). We therefore show that both water bodies and saturated soils can be identified successfully using this approach. LA - English DB - MTMT ER - TY - JOUR AU - Jakab, Gergely Imre AU - Hegyi, I AU - Fullen, M AU - Szabó, Judit Alexandra AU - Zacháry, Dóra AU - Szalai, Zoltán TI - A 300-year record of sedimentation in a small tilled catena in Hungary based on δ 13 C, δ 15 N, and C/N distribution JF - JOURNAL OF SOILS AND SEDIMENTS J2 - J SOIL SEDIMENT VL - 18 PY - 2018 IS - 4 SP - 1767 EP - 1779 PG - 13 SN - 1439-0108 DO - 10.1007/s11368-017-1908-9 UR - https://m2.mtmt.hu/api/publication/3312205 ID - 3312205 N1 - Geographical Institute, Research Centre for Astronomy and Earth Sciences Hungarian Academy of Sciences, Budaörsi út 45, Budapest, 1112, Hungary Department of Environmental and Landscape Geography, Eötvös Loránd University, Pázmány P. sétány 1/c, Budapest, 1117, Hungary Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Budaörsi út 45, Budapest, 1112, Hungary Faculty of Science and Engineering, The University of Wolverhampton, Wolverhampton, WV1 1LY, United Kingdom Cited By :2 Export Date: 30 August 2019 Correspondence Address: Jakab, G.; Geographical Institute, Research Centre for Astronomy and Earth Sciences Hungarian Academy of Sciences, Budaörsi út 45, Hungary; email: jakab.gergely@csfk.mta.hu Geographical Institute, Research Centre for Astronomy and Earth Sciences Hungarian Academy of Sciences, Budaörsi út 45, Budapest, 1112, Hungary Department of Environmental and Landscape Geography, Eötvös Loránd University, Pázmány P. sétány 1/c, Budapest, 1117, Hungary Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Budaörsi út 45, Budapest, 1112, Hungary Faculty of Science and Engineering, The University of Wolverhampton, Wolverhampton, WV1 1LY, United Kingdom Cited By :3 Export Date: 25 October 2020 Correspondence Address: Jakab, G.; Geographical Institute, Research Centre for Astronomy and Earth Sciences Hungarian Academy of Sciences, Budaörsi út 45, Hungary; email: jakab.gergely@csfk.mta.hu LA - English DB - MTMT ER - TY - JOUR AU - Szalai, Zoltán AU - Szabó, Judit Alexandra AU - Kovács, József AU - Mészáros, Erzsébet AU - Albert, Gáspár AU - Centeri, Csaba AU - Keller, Boglárka AU - Madarász, Balázs AU - Zacháry, Dóra AU - Jakab, Gergely Imre TI - Redistribution of soil organic carbon triggered by erosion at field scale under subhumid climate, Hungary JF - PEDOSPHERE J2 - PEDOSPHERE VL - 26 PY - 2016 IS - 5 SP - 652 EP - 665 PG - 14 SN - 1002-0160 DO - 10.1016/S1002-0160(15)60074-1 UR - https://m2.mtmt.hu/api/publication/3098840 ID - 3098840 N1 - Geographical Institute Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Budapest, 1112, Hungary Department of Environmental and Landscape Geography, Eötvös Loránd University, Budapest, 1117, Hungary Department of Applied and Environmental Geology, Eötvös Loránd University, Budapest, 1117, Hungary Department of Cartography and Geoinformatics, Eötvös Loránd University, Budapest, 1117, Hungary Department of Nature Conservation and Landscape Ecology, Szent István University, Gödöllö, 2100, Hungary Cited By :9 Export Date: 3 September 2019 CODEN: PDOSE Correspondence Address: JAKAB, G.; Department of Environmental and Landscape Geography, Eötvös Loránd UniversityHungary; email: jakabg@mtafki.hu Geographical Institute Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Budapest, 1112, Hungary Department of Environmental and Landscape Geography, Eötvös Loránd University, Budapest, 1117, Hungary Department of Applied and Environmental Geology, Eötvös Loránd University, Budapest, 1117, Hungary Department of Cartography and Geoinformatics, Eötvös Loránd University, Budapest, 1117, Hungary Department of Nature Conservation and Landscape Ecology, Szent István University, Gödöllö, 2100, Hungary Cited By :15 Export Date: 24 October 2020 CODEN: PDOSE Correspondence Address: JAKAB, G.; Department of Environmental and Landscape Geography, Eötvös Loránd UniversityHungary; email: jakabg@mtafki.hu Funding details: 11476-3/ 2016/FEKUT Funding details: Hungarian Science Foundation Funding details: Magyar Tudományos Akadémia, MTA Funding details: Hungarian Scientific Research Fund, OTKA Funding text 1: This study was funded by the Hungarian Foundation (OTKA) (No. PD-100929). Some part of the research was supported by the Kutató Kari Kiválósági Támogatás—Research Centre of Excellence—11476-3/ 2016/FEKUT. The authors are also grateful to the Egegyümölcs Ltd., Hungary for providing the study site and Ms. V. Ujházi from Geographical Institute, Research Centre for Astronomy and Earth Sciences, Hungary and Ms. K. Fehér from Department of Environmental and Landscape Geography, Eötvös Loránd University, Hungary for the laboratory support. Special thanks are given to Mr. L. Bassa and Dr. Gy. Var-ga from Geographical Institute, Research Centre for Astronomy and Earth Sciences, Hungary and Dr. T. Balogh from GlaxoSmithKline, UK for language improvement. The corresponding author was supported by the János Bolyai Research Fellowship by the Hungarian Academy of Sciences. LA - English DB - MTMT ER - TY - JOUR AU - Szabó, Judit Alexandra AU - Jakab, Gergely Imre AU - Keller, Boglárka TI - Spatial and temporal heterogeneity of runoff and soil loss dynamics under simulated rainfall JF - HUNGARIAN GEOGRAPHICAL BULLETIN (2009-) J2 - HUNG GEOGR BULL (2009-) VL - 64 PY - 2015 IS - 1 SP - 25 EP - 34 PG - 10 SN - 2064-5031 DO - 10.15201/hungeobull.64.1.3 UR - https://m2.mtmt.hu/api/publication/2886707 ID - 2886707 N1 - Megjegyzés-26608755 Szabadon elérhető itt: http://www.mtafki.hu/konyvtar/kiadv/HunGeoBull2015/HunGeoBull_64_1_3.pdf Cited By :13 Export Date: 26 October 2020 LA - English DB - MTMT ER - TY - JOUR AU - Novák, Tibor József AU - Incze, József AU - Spohn, M AU - Glina, B AU - Giani, L TI - Soil and vegetation transformation in abandoned vineyards of the Tokaj Nagy-Hill JF - CATENA J2 - CATENA VL - 123 PY - 2014 SP - 88 EP - 98 PG - 10 SN - 0341-8162 DO - 10.1016/j.catena.2014.07.017 UR - https://m2.mtmt.hu/api/publication/2723923 ID - 2723923 N1 - Megjegyzés-27496825 Megjegyzés-26852040 OA No LA - English DB - MTMT ER -