2026-04-17T23:57:46Zhttp://doidb.wdc-terra.org/oaip/oai

oai:doidb.wdc-terra.org:76682023-01-20T10:28:05ZDOIDBDOIDB.ISG

false4DOIDB.ISG 10.5880/isg.2020.012 Garbanzo-León, Jaime Jaime Garbanzo-León 0000-0002-6241-3527 School of Surveying Engineering, University of Costa Rica, Costa Rica Vega Fernández, Alonso Alonso Vega Fernández 0000-0002-8804-1485 School of Surveying Engineering, University of Costa Rica, Costa Rica Varela Sánchez, Mauricio Mauricio Varela Sánchez 0000-0002-5715-4612 School of Surveying Engineering, University of Costa Rica, Costa Rica Picado Salvatierra, Juan Antonio Juan Antonio Picado Salvatierra 0000-0002-5834-9868 School of Surveying Engineering, University of Costa Rica, Costa Rica Kingdon, Robert W. Robert W. Kingdon 0000-0002-2534-0613 School of Geodesy and Geomatics Engineering, University of New Brunswick, Canada Lücke, Oscar H. Oscar H. Lücke 0000-0002-9712-6608 Central American School of Geology, University of Costa Rica, Costa Rica GFZ Data Services 2020 Geodesy Geoid model ISG UNB Stokes-Helmert approach Costa Rica 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 Garbanzo-León, Jaime School of Surveying Engineering, University of Costa Rica, Costa Rica ISG Staff International Service for the Geoid (ISG) 2020 Dataset 10.31577/congeo.2020.50.2.3 10.1007/s00190-018-1208-1 10.5194/essd-13-1653-2021 http://www.isgeoid.polimi.it/ 1.0 CC BY 4.0 The geoid for Costa Rica GCR-RSH-2020 (Geoide-Costarricense-Regional Calculado con el Método de Stokes-Helmert) is a 1 arc minute grid computed from terrestrial, marine and satellite gravity data. It is remarkable the comprehensive data cleaning and the use of new terrestrial gravity values which were not included in any other geoid determinations. The GECO global geopotential model was used for the data gap filling. The GCR-RSH-2020 computation was based on the Stokes-Helmert approach developed by the University of New Brunswick, using GOCO05s as background global geopotential model. The resulting geoid is distributed in the WGS84 system (note that between WGS84 and WRS80, there is a shift of approximately 93 cm for Costa Rica). The GCR-RSH-2020 accuracy was assessed by comparing it with GNSS/levelling values on 25 selected benchmarks of the Costa Rica vertical reference system, showing differences with a standard deviation of 0.207 m.

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 geoid model GCR-RSH-2020 -85.9917 -82.0083 8.00833 11.4917