The Ethiopian gravimetric geoid: ETH-GM21

Description: The ETH-GM21 model is a gravimetric geoid of 2'x2' spatial resolution developed over Ethiopia. This model has been computed using terrestrial and airborne gravity data together with the EIGEN-6C4 GGM and the SRTM3 digital elevation model. The ETH-GM21 model has been determined by using the remove-compute-restore procedure and the least-squares collocation method, obtaining geoid undulations referred to WGS84. With the use of geometric geoid heights obtained from 46 GNSS/levelling data distributed over Ethiopia, the accuracy of the ETH-GM21 gravimetric geoid model has been estimated to ±13 cm. 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.

Global identifier:

Doi(
    "10.5880/isg.2021.004",
)

Origins: /Wissenschaft/GFZ

Tags: Äthiopien ? Daten ? Geodäsie ? EARTH SCIENCE > SOLID EARTH > GEODETICS > GEOID CHARACTERISTICS ? EARTH SCIENCE > SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > GRAVITY ? Geoid model ? ISG ? Least Squares Collocation ?

License: cc-by/4.0

Language: Englisch/English

Organisations

• GFZ Data Services (Herausgeber*in)

Issued: 2021-01-01

Time ranges: 2021-01-01 - 2021-01-01

Status

Aktiv

Quality score

• Overall: 0.53
• Findability: 0.54

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• Accessibility: 0.67

  • Landing page: Specific (1.00)
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• Interoperability: 0.25

  • Open file format: false
  • Media type: false
  • Machine-readable metadata: true
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• Reusability: 0.67

  • License: ClearlySpecifiedAndFree (1.00)
  • Contact info: false
  • Publisher info: true

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