Results 91 to 100 of about 948 (186)

Modelling the local geoid of East Kalimantan from combination of airborne and terrestrial gravity data using the KTH method

Geodesy and Cartography
This research aims to determine the gravimetric geoid using the KTH method for East Kalimantan, where Indonesia’s new capital city is located. The geoid of East Kalimantan was calculated from a combination of airborne gravity data, terrestrial gravity ...
Sukma Nur Oktavia, Leni Sophia Heliani
doaj   +1 more source

Evaluation of recent combined global geopotential models in Brazil

Journal of Geodetic Science, 2018
The aim of this paper is to present a quantitative analysis of the adequacy of the main currently existing combined Global Geopotential Models (GGMs) for modeling normal-geoid heights throughout Brazil.
Nicacio E., Dalazoana R., Freitas S. R. C. de   +2 more
doaj   +1 more source

Sobre o novo modelo do geopotencial EGM2008 [PDF]

, 2008
A determinação do campo de gravidade tem provado ser uma tarefa formidável. Atualmente, os dados coletados a partir de uma dezena de satélites são utilizados para determinar o campo de gravidade da Terra, que contém informações importantes para o ...
Souza, Sergio da Rocha, Matsuoka, Marcelo Tomio, Severo, Tiago Cavagnoli, Götz, Jussyer Jonny   +3 more
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Testes sobre a eficiência do modelo do geopotencial EGM2008 na cidade de Porto Alegre [PDF]

, 2010
Este estudo apresenta o teste da eficiência do Earth Global Model 2008 (EGM2008) na geração de um modelo geoidal local, através da compatiblização com a ondulação obtida por posicionamento GPS (Global Positioning System) em 63 Referências de Nível (RN’s)
Vagner Conceição Nunes, Nunes, Vagner Conceição   +1 more
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The exact implementation of a spherical harmonic model for gravimetric quantities

Journal of Geodetic Science
This note presents formulas to evaluate a spherical harmonic model of Earth’s gravitational potential for essential gravimetric quantities without spherical and linear approximation.
Jekeli Christopher
doaj   +1 more source

Evaluation of Selected Global Geopotential Models for Regional Applications in Nigeria

Nova Geodesia
The advent of Global Navigation Satellite Systems (GNSS) has significantly advanced geomatics by facilitating efficient data acquisition. However, deriving accurate orthometric heights from GNSS-based ellipsoidal heights remains challenging ...
Lukman Abdulmumin, Swafiyudeen Bawa, Kamorudeen Folorunso Aleem   +2 more
doaj   +1 more source

An Evaluation of Recent Global Geopotential Models for Strip Area Project in Turkey

Earth Sciences Research Journal, 2016
The aim of this study is to present the evaluations based on comparisons of geoid heights that are computed from several global geopotential models (GGMs) and the GNSS/levelling data.
Serkan Doganalp
doaj   +1 more source

Determination of the Quasi-Geoid of Xinjiang and Tibet Areas and the Normal Height of Mt. Everest Based on EGM2008 [PDF]

, 2011
The normal height H* is the height above the quasi-geoid, which coincides with the geoid in the ocean but slightly deviates from the geoid in terrestrial areas. In Mainland China, the height datum system is based on the quasi-geoid.
Bin Tian, WenBin Shen, Jiancheng Han, Jin Li   +3 more
core   +2 more sources

Estudo da Separação do Geoide e do Quase Geoide no Estado do Rio Grande do Sul

Revista Brasileira de Cartografia, 2023
Em 2018, o IBGE alinha-se às recomendações internacionais determinando as chamadas altitudes normais. Em razão disso, criou-se a necessidade de modelar a Separação entre Geoide e Quase Geoide (SGQG) para permitir a conversão entre altitudes normais e ...
Susana Amaral Torres, Sérgio Florêncio de Souza, Rodrigo da Silva Ferraz   +2 more
doaj  

Basin depth distribution in western Anatolia using EGM2008 gravity model [PDF]

, 2014
EGM2008 gravity model is used to generate a map of basin depth distribution in western Anatolia. Topographic and the crustal scale gravity effects were removed by applying appropriate 2-D filters.

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