2026-06-13T03:36:54Zhttp://doidb.wdc-terra.org/oaip/oaioai:doidb.wdc-terra.org:72392022-05-03T15:28:24ZDOIDBDOIDB.ISGfalse4DOIDB.ISG
10.5880/isg.2021.003
Belay, Ephrem Y.
Ephrem Y.
Belay
Ethiopian Space Science and Technology Institute (ESSTI), Addis Ababa, Ethiopia
Godah, Walyeldeen
Walyeldeen
Godah
0000-0002-5616-0770
Centre of Geodesy and Geodynamics, Institute of Geodesy and Cartography (IGiK), Warsaw, Poland
Szelachowska, Malgorzata
Malgorzata
Szelachowska
0000-0002-6421-7589
Centre of Geodesy and Geodynamics, Institute of Geodesy and Cartography (IGiK), Warsaw, Poland
Tenzer, Robert
Robert
Tenzer
0000-0002-9915-4960
Department of Land Surveying and Geo-Informatics, Hong Kong Polytechnic University, Hong Kong
The Ethiopian gravimetric quasi-geoid: ETH-QM21
GFZ Data Services
2021
Geodesy
Geoid model
ISG
Geoid-to-quasigeoid separation
Ethiopia
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
Godah, Walyeldeen
Centre of Geodesy and Geodynamics, Institute of Geodesy and Cartography (IGiK), Warsaw, Poland
ISG Staff
International Service for the Geoid (ISG)
2021
Dataset
DOI of paper when available
10.1016/j.jafrearsci.2021.104313
https://archive.org/details/Moritz1980AdvancedPhysicalGeodesy
10.5194/essd-13-1653-2021
http://www.isgeoid.polimi.it/
10.5880/isg.2021.004
CC BY 4.0
The ETH-QM21 model is a gravimetric quasigeoid of 2'x2' spatial resolution developed over Ethiopia. This solution has been derived from the ETH-GM21 gravimetric geoid model by using the ETH-GQS geoid-to-quasigeoid separation surface over Ethiopia (see Dataset Description). Considering the rough topography of Ethiopia, the ETH-QM21 would be beneficial for normal height measurements. The ETH-QM21 model would be beneficial for normal height measurements, also considering the rough topography of Ethiopia.
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 ETH-QM21
33.0586
47.9259
3.45862
14.8593