Results 1 to 10 of about 1,421,677 (272)
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
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
doaj +4 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
doaj +3 more sources
Estimation of Geopotential Value W0 for the Geoid and Local Vertical Datum Parameters
Remote Sensing, 2023 Unification of the global vertical datum has been a key problem to be solved for geodesy over a long period, and the main challenge for unifying the global vertical datum system is to determine the geopotential value W0 of the geoid and to calculate the ...
Xinyu Liu +4 more
doaj +2 more sources
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
Remote Sensing, 2020 Unification of the global vertical datum has been a key problem to be solved for geodesy over a long period, and the main challenge for a unified vertical datum system is to determine the vertical offset between the local vertical datum and the global ...
Panpan Zhang +7 more
doaj +2 more sources
On the connection of the Ecuadorian Vertical Datum to the IHRS
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
doaj +2 more sources
THE IMPACT OF SEA LEVEL RISE ON GEODETIC VERTICAL DATUM OF PENINSULAR MALAYSIA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 Sea level rise is rapidly turning into major issues among our community and all levels of the government are working to develop responses to ensure these matters are given the uttermost attention in all facets of planning.
A. H. M. Din +4 more
doaj +2 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 +2 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