2026-04-05T16:42:24Zhttp://doidb.wdc-terra.org/oaip/oaioai:doidb.wdc-terra.org:70732021-04-21T07:30:48ZDOIDBDOIDB.ISGfalse4DOIDB.ISG
10.5880/isg.2020.005
Işık, Mustafa Serkan
Mustafa Serkan
Işık
0000-0003-1769-4451
Geomatics Engineering Department, Istanbul Technical University, Istanbul, Turkey
Erol, Bihter
Bihter
Erol
0000-0003-0854-788X
Geomatics Engineering Department, Istanbul Technical University, Istanbul, Turkey
Erol, Serdar
Serdar
Erol
0000-0002-7100-8267
Geomatics Engineering Department, Istanbul Technical University, Istanbul, Turkey
Sakil, Fatıma Feyza
Fatıma Feyza
Sakil
0000-0002-3262-0621
Geomatics Engineering Department, Istanbul Technical University, Istanbul, Turkey
The ITU quasi-geoid based on Least Squares modification of Stokes integral with additive corrections for the Colorado Experiment: ColLSMSA2020
GFZ Data Services
2020
Geodesy
Geoid model
ISG
Least Squares modification of Stokes integral with additive corrections
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
Işık, Mustafa Serkan
Geomatics Engineering Department, Istanbul Technical University, Istanbul, Turkey
ISG Staff
International Service for the Geoid (ISG)
2020
Dataset
10.1007/s00190-021-01501-z
http://www.isgeoid.polimi.it/Geoid/format_specs.html
10.1007/s00190-020-01434-z
http://www.isgeoid.polimi.it/
10.5194/essd-13-1653-2021
10.5880/isg.2021.001
10.5880/isg.2021.002
10.5880/isg.2020.006
1.0
CC BY 4.0
The ColLSMSA2020 gravimetric quasi-geoid model has been computed by the Gravity Research Group of the Department of Geomatics Engineering, Istanbul Technical University (ITU-GRG). 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". The area covered by the model is 109°W ≤ longitude ≤ 103°W, 36°N ≤ latitude ≤ 39°N with a grid spacing of 2' in both latitude and in longitude.
The computation is based on the Least Squares Modification of Stokes Integral with Additive Corrections (LSMSA). In the computation, the XGM2016 global geopotential model up to degree/order 719 is used. Integration radius for Stokes integral is chosen as 0.5°. The error degree variance of gravity anomalies is constructed using a bandlimited white noise model where standard deviation is taken as 3 mGal. The input gravity data include terrestrial and airborne data combined using 3D Least-Squares Collocation (LSC). The accuracy of the quasi-geoid model over GSVS17 GPS/leveling is 2.7 cm.
The quasi-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 ColLSMSA2020
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