Research Group for Geodesy and Geodynamics
Research keywords:
· geodesy
· gravimetry
· satellite geodesy
· InSAR
· geodynamics
· mathematical geodesy
Introduction of the Research Group
The BME Research Group for Geodesy and Geodynamics is a laboratory working at the Budapest University of Technology and Economics, in the Department of Geodesy and Surveying. The laboratory aims to perform basic and applied researches in the field of geodesy. More specifically, the group focuses on (1) the development of a QDaedelus astro-geodetic measurement system for observation deflection of the vertical values with high precision, (2) modernizing traditional Eötvös torsion balance instrument involving of present IT technology achieving unprecedented accuracy, (3) processing observations of gravity satellites (CHAMP, GRACE(-FO), GOCE, GRAIL) for determination of the geoid / solenoid, (4) developing methodology for processing, handling and interpreting gradiometric observations, (5) developing methodology for interpolating deflection of the vertical observations, (6) developing methodology for processing, handling and interpreting InSAR Sentinel-1 observations, (7) reconstruction of the Eötvös torsion balance measurement for proving the equivalence of gravitational and inertial mass, (8) analysing the geodetic impacts of temporal variation of the Earth's gravity field, (9) interpreting the geometric content of gravity gradients (relations between Eötvös- and Marussi-tensor), (10) investigations of the geodetic control networks and reference frames of Hungary, datum transformations.
Achievements
- Development of an astro-geodetic measurement system- Methodological development of processing gravity satellite observations
- Methodological development of interpolation of the deflection of the vertical data
- Methodological development of regional gravity field modeling
- Local and regional scale InSAR monitoring
Publications
Tóth, Gy.: Gravity gradient bias in the EPF experiment, EUROPEAN PHYSICAL JOURNAL PLUS 135 : 2 Paper: 222, 2020Völgyesi L., Tóth Gy.: Calibration of CCD sensors mounted on geodetic measuring systems, SURVEY REVIEW 52 pp. 1-10, 2020
Földváry L.: Sampling Error of Continuous Periodic Data and its Application for Geodesy, Mathematical Methods in the Applied Sciences, 44(14): 11738-11752, https://doi.org/10.1002/mma.7599, 2021
Bauer, T., Immitzer, M., Mansberger, R., Vuolo, F., Márkus, B., Wojtaszek, M. V., Földváry, L., Szablowska-Midor, A., Kozak, J., Oliveira, I., van Lieshout, A., Vekerdy, Z., Ninsawat, S., Mozumder, C.: The Making of a Joint E-Learning Platform for Remote Sensing Education: Experiences and Lessons Learned. Remote Sensing, 13(9), 1718, 2021. DOI: 10.3390/rs13091718
Földváry, L.: Desmoothing of averaged periodical signals for geodetic applications, Geophysical Journal International, 201 (3): 1235-1250, DOI 10.1093/gji/ggv092, 2015
Journals
Acta Geodaetica et GeophysicaPeriodica Polytechnika Civil Engineering
Infrastructure
- QDaedalus measurement system - Eötvös torsion balance instruments - BME absolute gravimetric station - geodetic monitoring network (Sóskút) - GNSS permanent station (BUTE)Projects
2002-01-01 - 2005-12-31: OTKA K37929, “Investigation of the non-tidal temporal variations of the gravity field", PI: L. Völgyesi, participant: Gy. Tóth2002.07.01 - 2004.12.31: "Greek-Hungarian bilateral interngovernmental technology and science cooperation: Gravity field modelling by combining terrestrial and satellite gravity data", Hungarian project leader: J. Ádám, participant: Gy. Tóth
2004-01-01 - 2008-05-31: OTKA K46718, “Regional gravity field research by using new kinds of terrestrial and satellite measurements”, PI: Gy. Tóth, participants: L. Völgyesi, J. Ádám, Sz. Rózsa, P. Laky (née P. Zaletnyik)
2006-02-01 - 2010-07-31: OTKA K60657, “The investigation of the fine structure of the gravity field”, participants: L. Völgyesi, Gy. Tóth, L. Földváry
2008-04-01 - 2011-03-31: OTKA K72806,“Accuracy analysis of Faye-anomalies of the Hungarian Level Base Network, EOMA”, PI: L. Földváry, participants: Gy. Tóth, L. Völgyesi
2009-01-01 - 2014-12-31: OTKA K76231, “Geodetic applications of torsion balance measurements” , PI: L. Völgyesi, participant: Gy. Tóth, Sz. Rózsa, L. Földváry
2012-09-01 - 2015-08-31: OTKA K106118, “Interpretation and exploitation of GOCE gravity gradients”, PI: L. Földváry, participants: Gy. Tóth, J. Ádám
2019.11.27. - ongoing: HUSKROUA/1702, GeoSES: “Extension of the operational Space Emergency System towards monitoring of dangerous natural and man-made geo-proceses in the HU-SK-RO-UA cross border region”, Hungarian program manager: Sz. Rózsa, participants: B. Ambrus and B. Magyar
2017-12-01 - ongoing: OTKA K124286, “Further development and geodetic applications of the QDaedalus system”, PI: L. Völgyesi, participant: Gy. Tóth, Sz. Rózsa, J. Ádám
Industry relations
Lechner Knowledge CenterELKH Institute of Earth Physics and Space Science
Aristotle University of Technology
Karlsruhe Institute of Technology
Tashkent Institute of Irrigation and Agricultural Mechanization Engineers
Karakalpak State University
Conferences
GISCA 2022, organizer, Bishkek / Tashkent / Almaty / Dushanbe / Urumqi, 2022.05.23-25, Lóránt Földváry, editor of the ProceedingsInternational Conference on Geotechnical and Geophysical Site Characterization (ISC'6), Budapest, Hungary, 26-29 September 2021, participants: Gy. Tóth and L. Völgyesi
International Conference on Precision Physics and Fundamental Physical Constants (FFK-2019), Tihany, Hungary, 9-14 June 2019, participants: Gy. Tóth and L. Völgyesi