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Rigorous Evaluation of Gravity Field Functionals from Satellite-Only Gravitational Models Within Topography Read chapter Read first chapter

2019 | OriginalPaper | Chapter

Evaluation of the African Gravity Database AFRGDB_V1.0

Authors : Hussein A. Abd-Elmotaal, Kurt Seitz, Norbert Kühtreiber, Bernhard Heck

Published in: International Symposium on Gravity, Geoid and Height Systems 2016

Publisher: Springer International Publishing

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Abstract

The AFRGDB_V1.0 gravity database has been generated in 2015 from a set of land, shipborne and altimetry-derived gravity anomalies. This gravity data set had significantly large gaps especially on land. Recently, a new gravity data set on land became available. Most of the points of the new data set are located on the large gaps of the data set used to establish the AFRGDB_V1.0 gravity database. This enables an external check of the AFRGDB_V1.0 gravity database at those new data points. An internal validation of the AFRGDB_V1.0 gravity database has been also carried out. The results show that the AFRGDB_V1.0 has an internal precision of about 9 mgal and external accuracy of about 16 mgal.

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previous chapter The African 3″× 3″ DTM and Its Validation
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Metadata
Title
Evaluation of the African Gravity Database AFRGDB_V1.0
Authors
Hussein A. Abd-Elmotaal
Kurt Seitz
Norbert Kühtreiber
Bernhard Heck
Copyright Year
2019
Book
International Symposium on Gravity, Geoid and Height Systems 2016

Print ISBN: 978-3-319-95317-5

Electronic ISBN: 978-3-319-95318-2

Copyright Year: 2019

DOI
https://doi.org/10.1007/1345_2017_16