Integration of satellite geodetic observations for regional geoid modeling using remove-compute-restore technique

I Kalu, CE Ndehedehe, O Okwuashi, AE Eyoh - Earth Science Informatics, 2022 - Springer
Advanced satellite geodetic systems have contributed to improving knowledge on changes
in global gravity fields in recent years. These systems offer profound opportunities in the …

An alternative geoid model for Africa using the shallow-layer method

M Ashry, WB Shen, HA Abd-Elmotaal - Studia Geophysica et Geodaetica, 2021 - Springer
The aim of the current investigation is to determine an alternative geoid model for Africa
using the shallow-layer method. The shallow-layer method, following the basic definition of …

Validation of a tailored gravity field model for precise quasigeoid modelling over selected sites in Cameroon and South Africa

PA Odera, OI Apeh, L Yap, MS Mphuthi - Journal of Applied …, 2024 - degruyter.com
In this study, a tailored gravity-field model is developed to fit and recover local terrestrial
gravity data by integrating gravity from global gravity-field models, residual gravity derived …

[PDF][PDF] Recent High-Order Global Geopotential Models for Geoid Modelling in Egypt.

G Dawod, E Al-Krargy - Geophysica, 2023 - geophysica.fi
Abstract An optimum Global Geopotential Model (GGM) is required either to represent the
long wavelength of the Earth's gravitational field in gravimetric geoid modelling or to act as a …

Integrating altimetry derived gravity anomalies with ship-borne gravity data for Africa

ABDE Hussein, A MAKHLOOF - Contributions to Geophysics and …, 2023 - journal.geo.sav.sk
The most comprehensive and precise gravity data for the sea region must be obtained for
the Sub-Commission of gravity and geoid for Africa (The African Gravity and Geoid sub …

[PDF][PDF] Studying the Evolution of Resolution Capabilities and Approximation Accuracy of Global Models by Spectral Characteristics

IG Ganagina, AP Karpik, VF Kanushin… - 5th Symposium on …, 2022 - library.oapen.org
The paper presents research of the evolution of resolution capabilities and approximation
accuracy of the last decade global geopotential models based on space gravimetric …

Towards a geoid consistent vertical datum in South Africa

MS Mphuthi - 2021 - open.uct.ac.za
Traditionally, vertical datums have been realised through mean sea level (MSL) data, at one
or more tide gauge station (s), followed by a precise levelling procedure to establish a …

[PDF][PDF] Determination of the reference height surfaces in the regions with sparse gravity data

AH Gad, AH Moamen - 2022 - nardus.mpn.gov.rs
The research aims to create a methodology that would lead to a mathematical model of
referent surfaces and apply that created model in areas where it is not possible to provide a …

Determination of the reference height surfaces in the regions with sparse gravity data: doctoral dissertation

HG Moamen Awad - Универзитет у Београду, 2023 - nardus.mpn.gov.rs
The research aims to create a methodology that would lead to a mathematical model of
referent surfaces and apply that created model in areas where it is not possible to provide a …

Determination of the reference height surfaces in the regions with sparse gravity data

HG Moamen Awad - 2022 - grafar.grf.bg.ac.rs
The research aims to create a methodology that would lead to a mathematical model of
referent surfaces and apply that created model in areas where it is not possible to provide a …