Vertical datum transformation grids for Mexico. [PDF]
Sci Data, 2020 AbstractMexico has used two vertical datums—the U.S. National Geodetic Vertical Datum of 1929 (NGVD29) and the North American Vertical Datum of 1988 (NAVD88). Because Mexico started using the NAVD88 as its vertical datum in 2015, most of Mexico’s data is referenced to the NGVD29 and recent high resolution data are referenced to the NAVD88.
Carrera-Hernández JJ.
europepmc +5 more sources
Uniciencia, 2004 La introducción de la metodología GPS en aplicaciones topográficas y geodésicas pone en notoria evidencia la clásica separación de sistemas de referencia en horizontal y vertical.
Esteban Dörries, Julio Roldán
doaj +3 more sources
Preliminary Unification of Kronsztadt86 Local Vertical Datum with Global Vertical Datum [PDF]
Reports on Geodesy and Geoinformatics, 2015 The study concerns computation of the gravity potential difference between the Kronsztadt86 datum and the global vertical datum. This method is based on the use of ellipsoidal heights from satellite observations, normal heights obtained from the ...
Łyszkowicz Adam +2 more
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Estimation of vertical datum offset for the South African vertical datum, in relation to the international height reference system [PDF]
Geodetski Vestnik, 2021 The vertical offset and the geopotential value over South Africa is estimated on the four fundamental benchmarks in relation to the international height reference system (IHRS).
Matthews Siphiwe Mphuthi +1 more
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Analysis of a Relative Offset between the North American and the Global Vertical Datum in Gravity Potential Space [PDF]
Remote Sensing, 2023 The accurate estimation of the zero-height geopotential level in a local vertical datum (LVD) is critical for linking traditional height reference systems to a global height system.
Dongmei Guo, Zhixin Xue
doaj +2 more sources
On the connection of the Ecuadorian Vertical Datum to the IHRS [PDF]
Journal of Geodetic Science, 2023 In this work, the determination of the discrepancy between the Ecuadorian Vertical Datum (EVD) and the International Height Reference System (IHRS) is presented.
Carrión José L. +2 more
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Referencing regional geoid-based vertical datums to national tide gauge networks [PDF]
Journal of Geodetic Science, 2012 The objective of this study is to investigate the best means for referencing a regional geoid-based vertical datum to a network of tide gauges. In this study, a network of 27 tide gauge stations scattered along the coasts of Canada are used in order to ...
Bolkas D., Fotopoulos G., Sideris M. G.
doaj +2 more sources
How Significant is the Dynamic Component of the North American Vertical Datum? [PDF]
Journal of Geodetic Science, 2012 One of the main current geodetic activities in North America is the definition and establishment of a geoid-based vertical datum that will replace the official CGVD28 and NAVD88 datums in Canada and the USA, respectively.
Rangelova E. +2 more
doaj +2 more sources
Análisis de la evolución temporal del datum vertical brasileño de Imbituba
Revista Cartográfica, 2019 Actualmente, los temas más centrales de Geodesia se vinculan a la provisión de un Sistema de Referencia Global único, al que puedan vincularse de forma unívoca y con exactitud los cambios globales de carácter geométrico y físico.
Luciana Maria Da Silva +1 more
doaj +5 more sources
Absolute vertical motion of the Amsterdam Ordnance Datum (NAP) [PDF]
Proceedings of the International Association of Hydrological Sciences, 2020 The backbone of the Amsterdam Ordnance Datum (NAP) is a network of about 400 primary subsurface markers. Relative movements between the primary subsurface markers are measured with spirit levelling once in 10–20 years.
R. Reudink +3 more
doaj +6 more sources