2026-04-07T14:37:03Zhttp://doidb.wdc-terra.org/oaip/oaioai:doidb.wdc-terra.org:86642026-04-01T07:09:13ZDOIDBDOIDB.ISGfalse4DOIDB.ISG
10.5880/isg.2025.005
Gómez, Agustín R.
Agustín R.
Gómez
0000-0003-0485-2537
Centro de Investigaciones Geofísicas (CIGEOF), Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata (UNLP), La Plata, Argentina
Tocho, Claudia N.
Claudia N.
Tocho
0000-0003-4133-9863
Centro de Investigaciones Geofísicas (CIGEOF), Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata (UNLP), La Plata, Argentina
Antokoletz, Ezequiel D.
Ezequiel D.
Antokoletz
0000-0002-7822-1300
Centro de Investigaciones Geofísicas (CIGEOF), Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata (UNLP), La Plata, Argentina
Cimbaro, Sergio R.
Sergio R.
Cimbaro
0000-0003-4788-6171
Dirección de Geodesia, Instituto Geográfico Nacional, Buenos Aires, Argentina
The gravimetric quasi-geoid of Tierra del Fuego Province based on FFT with modified Stokes kernel: RIO2QG_FFT_2025
GFZ Data Services
2025
Geodesy
Geoid model
ISG
Fast Fourier Transform
Tierra del Fuego Province
Argentina
EARTH SCIENCE > SOLID EARTH > GEODETICS > GEOID CHARACTERISTICS
EARTH SCIENCE > SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > GRAVITY
Reguzzoni, Mirko
Mirko
Reguzzoni
0000-0002-4027-9347
International Service for the Geoid (ISG), Politecnico di Milano, Italy
Carrion, Daniela
Daniela
Carrion
0000-0003-1262-9394
International Service for the Geoid (ISG), Politecnico di Milano, Italy
Rossi, Lorenzo
Lorenzo
Rossi
0000-0001-6050-1972
International Service for the Geoid (ISG), Politecnico di Milano, Italy
Gómez, Agustín R.
Centro de Investigaciones Geofísicas (CIGEOF), Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata (UNLP), La Plata, Argentina
ISG Staff
International Service for the Geoid (ISG)
Gómez, Agustín R.
Centro de Investigaciones Geofísicas (CIGEOF), Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata (UNLP), La Plata, Argentina
ISG Staff
International Service for the Geoid (ISG)
2025
Dataset
10.1007/s10712-017-9409-3
10.1007/s00190-025-02018-5
10.5194/essd-13-1653-2021
http://www.isgeoid.polimi.it/
10.5880/isg.2025.006
10.5880/isg.2025.003
10.5880/isg.2025.004
10.5880/isg.2025.001
10.5880/isg.2025.002
10.5880/isg.2025.009
10.5880/isg.2025.010
10.5880/isg.2025.007
10.5880/isg.2025.008
1.0
CC BY 4.0
RIO2QG_FFT_2025 is a local, high-precision, high-resolution, pure-gravimetric quasigeoid model developed for the area surrounding RIO2, an International Height Reference Frame (IHRF) station located in the Province of Tierra del Fuego, Argentina, covering latitudes 56°S to 51°S and longitudes 71°W to 64°W, with a 0.03° grid resolution. The purpose of the model is to determine the IHRF vertical coordinate at this station. Its computation followed Molodensky’s formulation of the Geodetic Boundary Value Problem (GBVP) and employed the remove–compute–restore (RCR) strategy. Long-wavelength components were modeled using the XGM2019e Global Geopotential Model (GGM) up to degree and order 700. Topographic contributions were modeled via Residual Terrain Modeling (RTM) using the SRTM v4.1 Digital Elevation Model (DEM). Residual height anomalies were calculated with the 1D-FFT technique incorporating the Wong-Gore modification to Stokes’ kernel. All computational steps were performed with the GRAVSOFT software package. Validation against 41 GNSS/leveling points yielded an estimated precision of 0.061 m after applying a four-parameter fit.
The geoid model is provided in ISG format 2.0 (ISG Format Specifications), while the file in its original data format is available at the model ISG webpage.
The International Service for the Geoid (ISG) was founded in 1992 (as International Geoid Service - IGeS) and it is now an official service of the International Association of Geodesy (IAG), under the umbrella of the International Gravity Field Service (IGFS). The main activities of ISG consist in collecting, analysing and redistributing local and regional geoid models, as well as organizing international schools on the geoid determination (Reguzzoni et al., 2021).
Gravimetric quasi-geoid model RIO2QG_FFT_2025
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