TY - JOUR AU - Völgyesi, Lajos AU - Tóth, Gyula TI - A függővonal-elhajlás meghatározásának lehetőségei [Possibilities of determination of the vertical deflections] JF - GEOMATIKAI KÖZLEMÉNYEK / PUBLICATIONS IN GEOMATICS J2 - GEOMAT KÖZL VL - 18 PY - 2015 IS - 2 SP - 75 EP - 83 PG - 9 SN - 1419-6492 UR - https://m2.mtmt.hu/api/publication/3130887 ID - 3130887 LA - Hungarian DB - MTMT ER - TY - BOOK AU - Biró, Péter AU - Ádám, József AU - Völgyesi, Lajos AU - Tóth, Gyula TI - A felsőgeodézia elmélete és gyakorlata ET - 0 PB - HM Zrínyi Térképészeti és Kommunikációs Szolgáltató Nonprofit Kft. CY - Budapest PY - 2013 SP - 508 SN - 9789632572482 UR - https://m2.mtmt.hu/api/publication/2692156 ID - 2692156 LA - Hungarian DB - MTMT ER - TY - CHAP AU - Tóth, Gyula AU - Völgyesi, Lajos ED - Tregoning, P ED - Rizos, C TI - Local gravity field modeling using surface gravity gradient measurements T2 - Dynamic Planet PB - Springer Science+Business Media CY - Berlin CY - Heidelberg SN - 9783662501153 T3 - International Association of Geodesy Symposia, Volume 130 PY - 2007 SP - 424 EP - 429 PG - 6 DO - 10.1007/978-3-540-49350-1_62 UR - https://m2.mtmt.hu/api/publication/1504911 ID - 1504911 LA - English DB - MTMT ER - TY - JOUR AU - Völgyesi, Lajos AU - Tóth, Gyula AU - Csapó, Géza TI - Determination of gravity field from horizontal gradients of gravity JF - ACTA GEODAETICA ET GEOPHYSICA HUNGARICA J2 - ACTA GEODAET GEOPHYS HUNG VL - 42 PY - 2007 IS - 1 SP - 107 EP - 117 PG - 11 SN - 1217-8977 DO - 10.1556/AGeod.42.2007.1.6 UR - https://m2.mtmt.hu/api/publication/208231 ID - 208231 LA - English DB - MTMT ER - TY - JOUR AU - Tóth, Gyula AU - Völgyesi, Lajos TI - Investigation of Hungarian torsion balance measurements by prediction JF - REPORTS ON GEODESY J2 - REPORTS ON GEODESY VL - 73 PY - 2005 IS - 2 SP - 277 EP - 284 PG - 8 SN - 0867-3179 UR - https://m2.mtmt.hu/api/publication/208273 ID - 208273 AB - Torsion balance measurements in Hungary were checked by least-squares collocation. The methodology was the so-called "leave-one-out" prediction of horizontal gravity gradients. The method was succesfully tested on a selected subset of 700 torsion balance measurements and only three possible outliers has been detected. These results are promising in view of a planned new Hungarian geoid determination. LA - English DB - MTMT ER - TY - JOUR AU - Völgyesi, Lajos TI - Deflections of the vertical and geoid heights from gravity gradients JF - ACTA GEODAETICA ET GEOPHYSICA HUNGARICA J2 - ACTA GEODAET GEOPHYS HUNG VL - 40 PY - 2005 IS - 2 SP - 147 EP - 159 PG - 13 SN - 1217-8977 DO - 10.1556/AGeod.40.2005.2.3 UR - https://m2.mtmt.hu/api/publication/2613697 ID - 2613697 AB - In the 20th century more than 60000 torsion balance measurements were made in Hungary. At present efforts are made to rescue the historical torsion balance data; today 24544 torsion balance measurements are available for further processing in computer database. Previously only the horizontal gradients of gravity were used by geophysicists, but there is a good possibility in geodesy to interpolate deflections of the vertical, and to compute geoid heights from curvature gradients of gravity. First the theory of the interpolation method is discussed, tha n results of test computations are presented. We have selected a test area where all kinds of torsion balance measurements are available at 249 points. There were 3 astrogeodetic points providing initial data for the interpolation, and 10 checkpoints for controlling the results. The size of our test area is about 750 km2 and the average site distance of torsion balance data is 1.5-2 km. The standard deviations of geoid height and deflection of the vertical differences at checkpoints were about ą1 - 3 cm, and ą0.6? respectively; which confirm that torsion balance measurements give possibility to compute very precise deflections of the vertical and local geoid heights at least for flat areas. Š 2005 Akade?miai Kiado?, Budapest. LA - English DB - MTMT ER - TY - JOUR AU - Völgyesi, Lajos AU - Kenyeres, Ambrus AU - Papp, Gábor AU - Tóth, Gyula TI - A geoidmeghatározás jelenlegi helyzete Magyarországon JF - GEODÉZIA ÉS KARTOGRÁFIA J2 - GEODÉZIA ÉS KARTOGRÁFIA VL - 57 PY - 2005 IS - 1 SP - 4 EP - 12 PG - 9 SN - 0016-7118 UR - https://m2.mtmt.hu/api/publication/156979 ID - 156979 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Völgyesi, Lajos AU - Csapó, Géza AU - Szabó, Zoltán TI - Relation between time variation of gravity and pannonian sediment thickness in the Carpathian basin JF - REPORTS ON GEODESY J2 - REPORTS ON GEODESY VL - 73 PY - 2005 IS - 2 SP - 255 EP - 262 PG - 8 SN - 0867-3179 UR - https://m2.mtmt.hu/api/publication/208260 ID - 208260 LA - English DB - MTMT ER - TY - CONF AU - Völgyesi, Lajos AU - Tóth, Gyula AU - Csapó, Géza TI - Determination of gravity anomalies from torsion balance measurements T2 - IAG International Symposium C1 - Porto PY - 2004 SP - 135 EP - 135 PG - 1 UR - https://m2.mtmt.hu/api/publication/2613778 ID - 2613778 LA - English DB - MTMT ER - TY - BOOK AU - Völgyesi, Lajos TI - Geofizika ET - 0 PB - Műegyetemi Kiadó CY - Budapest PY - 2002 SP - 346 UR - https://m2.mtmt.hu/api/publication/2613712 ID - 2613712 N1 - Kétszeres nívódíjas; 1982, 1999, 2002 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Völgyesi, Lajos TI - Local geoid determination based on gravity gradients JF - ACTA GEODAETICA ET GEOPHYSICA HUNGARICA J2 - ACTA GEODAET GEOPHYS HUNG VL - 36 PY - 2001 IS - 2 SP - 153 EP - 162 PG - 10 SN - 1217-8977 DO - 10.1556/AGeod.36.2001.2.3 UR - https://m2.mtmt.hu/api/publication/2613691 ID - 2613691 AB - There is a good possibility to interpolate a dense net of deflections of the vertical from Wyy-Wxx and Wxy gravity gradients measured by torsion balance and applying astronomical levelling to compute geoid heights. A new practical computation of astronomical levelling is suggested. LA - English DB - MTMT ER - TY - JOUR AU - Völgyesi, Lajos TI - Geodetic applications of torsion balance measurements in Hungary JF - REPORTS ON GEODESY J2 - REPORTS ON GEODESY VL - 57 PY - 2001 IS - 2 SP - 203 EP - 212 PG - 10 SN - 0867-3179 UR - https://m2.mtmt.hu/api/publication/2613751 ID - 2613751 LA - English DB - MTMT ER - TY - JOUR AU - Völgyesi, Lajos TI - Test interpolation of deflection of the vertical in Hungary based on gravity gradients JF - PERIODICA POLYTECHNICA-CIVIL ENGINEERING J2 - PERIOD POLYTECH CIV ENG VL - 39 PY - 1995 IS - 1 SP - 37 EP - 75 PG - 39 SN - 0553-6626 UR - https://m2.mtmt.hu/api/publication/2613689 ID - 2613689 AB - A program package for computers was developed to test empirical methods of interpolation of deflection of the vertical by any method of interpolation either along triangulation chains or in networks covering arbitrary large areas. In the course of our test computations in Hungary first we compared different empirical methods of interpolation then we tried to get an answer to the question whether the reliability of interpolated data can be increased by introducing appropriate weighting. Another important object of our investigations was to determine optimal geometrical arrangement for interpolation networks. -Author LA - English DB - MTMT ER - TY - JOUR AU - Völgyesi, Lajos TI - Interpolation of deflection of the vertical based on gravity gradients JF - PERIODICA POLYTECHNICA-CIVIL ENGINEERING J2 - PERIOD POLYTECH CIV ENG VL - 37 PY - 1993 IS - 2 SP - 137 EP - 166 PG - 30 SN - 0553-6626 UR - https://m2.mtmt.hu/api/publication/2613687 ID - 2613687 AB - In this paper, the signifcance of interpolation of deflection of the vertical by means of torsion balance measurements is pointed out, followed by outlining its fundamentals. There-after, its practical methods of solution will be presented. -Author LA - English DB - MTMT ER -