2026-05-16T14:32:12Zhttp://doidb.wdc-terra.org/oaip/oaioai:doidb.wdc-terra.org:69252021-12-20T07:53:43ZDOIDBDOIDB.ISGfalse4DOIDB.ISG
10.5880/isg.2020.003
Grigoriadis, Vassilios N.
Vassilios N.
Grigoriadis
0000-0003-1486-8284
School of Rural and Surveying Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece
Vergos, Georgios S.
Georgios S.
Vergos
0000-0003-2475-2568
School of Rural and Surveying Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece
The AUTh quasi-geoid based on 1D FFT with Wong-Gore modification of the Stokes kernel for the Colorado Experiment: ColFFTWG2020
GFZ Data Services
2020
Geodesy
Geoid model
ISG
Fast Fourier Transform
Wong-Gore Stokes kernel modification
Colorado experiment
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
Grigoriadis, Vassilios N.
School of Rural and Surveying Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece
ISG Staff
International Service for the Geoid (ISG)
2020
Dataset
TO BE ADDED: DOI of reference paper when available
http://www.isgeoid.polimi.it/Geoid/format_specs.html
10.1007/s00190-016-0948-z
http://www.isgeoid.polimi.it/
1.0
CC BY 4.0
The ColFFTWG2020 quasi-geoid model is a gravimetric model and has been computed by the Laboratory of Gravity Field Research and Applications, Aristotle University of Thessaloniki. The model has been computed in the frame of the International Association of Geodesy Joint Working Group 2.2.2 "The 1 cm geoid experiment" and the so called "Colorado experiment". The area covered by the models is 108.5°E ≤ longitude ≤ 103.5°E, 36.5°N ≤ latitude ≤ 38°N with a grid spacing of 2' in both latitude and in longitude.
The computation is based on the remove-compute-restore technique with XGM2106 being used as a reference field. The topographic effects were treated using a Residual Terrain Correction (RTC) by solving the spectral filter problem of RTC using Earth2014 and ERTM2160 models. The input gravity data include terrestrial and airborne data combined using Least-Squares Collocation (LSC). The final estimation was carried out using 1D FFT with Wong-Gore modification of the Stokes kernel. The mean accuracy of the model, when compared against GSVS17 GPS/leveling, is at 1.6 cm level.
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.
Gravimetric quasi-geoid model ColFFTWG2020
-108.5
-103.5
36.5
38