Results 11 to 20 of about 1,527 (198)

World ocean annual mean absolute geostrophic velocity on marine geoid of EIGEN‐6C4 from WOA13

open access: yesGeoscience Data Journal, 2022
This data set was established from two open sources: (a) geoid undulation (N) from EIGEN‐6C4, which is a static global combined gravity field model up to degree and order 2,190, and (b) ‘World ocean geostrophic velocity inverted from World Ocean Atlas ...
Peter C. Chu
doaj   +1 more source

Towards an exact relativistic theory of Earth's geoid undulation [PDF]

open access: yesPhysics Letters A, 2015
14 pages, no figures, several typos in equations, footnotes and bibliography were found and ...
Sergei M. Kopeikin   +2 more
openaire   +3 more sources

Multiband raster datasets in order to use global gravimetric models for the territory of the Republic of Kosova [PDF]

open access: yesMicro, Macro & Mezzo Geoinformation, 2021
Due to current situation in Kosova with the national geoid, which is still under development, utilization of global EGM’s is more than necessary. In this research, multiband raster datasets with 1km spatial resolution of existing EGM 2008, 1996, and ...
Fitore BAJRAMI-LUBISHTANI
doaj  

A MATLAB GEODETIC SOFTWARE FOR PROCESSING AIRBORNE LIDAR BATHYMETRY DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
The ability to build three-dimensional models through technologies based on satellite navigation systems GNSS and the continuous development of new sensors, as Airborne Laser Scanning Hydrography (ALH), data acquisition methods and 3D multi-resolution ...
M. Pepe, G. Prezioso
doaj   +1 more source

Development of a gravimetric geoid model and a comparative study

open access: yesGeodesy and Cartography, 2016
Site specific geoid model is prerequisite for accurate determination of orthometric heights. No geoid model has been developed so far for India or any of its part.
Upendra Nath Mishra, Jayanta Kumar Ghosh
doaj   +1 more source

Determination of correlation coefficient between geoid-to-quasigeoid separation calculated by the satellite data in Sjöberg’s equation and GPS/Levelling method [PDF]

open access: yesGeodesy and Cartography, 2018
In this paper, two techniques for calculating the geoid-to-quasigeoid separation are employed. One of them is GPS/Levelling customary method as a criterion where the geoid undulation and height anomaly are computed by subtracting the ellipsoid height ...
Ata Eshaghzadeh   +2 more
doaj   +1 more source

Determination of the local geoid model in Duhok Region, University of Duhok Campus as a Case study

open access: yesAin Shams Engineering Journal, 2021
The height obtained through the GNSS method is the ellipsoidal height and to have an efficient application in surveying it has to be converted into orthometric height.
Farsat Heeto Abdulrahman
doaj   +1 more source

Modeling difference of reference surfaces of the Earth's body to solve the problem of vertical positioning [PDF]

open access: yesTehnika, 2016
The aim of this paper is modeling difference of reference surfaces of the Earth's body to solve the problem of vertical positioning. With development of GNSS technology determining geoid undulation obtained scientific and practical significance ...
Tucikešić Sanja S.   +2 more
doaj   +1 more source

Gongola Basin Geoid Determination using Isostatic Models and Seismic Reflection Data and Geophysical Interpretation

open access: yesГеофизический журнал, 2016
The application of Stokes’ formula to create geoid undulation requires no masses outside the geoid. Usually, a constant density of 2.67g / cm3 is used in the determination of the geoid which introduces error in the reduced gravity anomalies (Helmert’s ...
E.E. Epuh, J.B. Olaleye, O.G. Omogunloye
doaj   +1 more source

Assessments of recent Global Geopotential Models based on GPS/levelling and gravity data along coastal zones of Egypt

open access: yesOpen Geosciences, 2023
The orthometric height has an essential role in a variety of civil engineering projects and it is defined as the length of the curved plumbline from a point (on the earth surface) to its intersection with the geoid surface. Leveling process is considered
Al Shouny Ahmed   +3 more
doaj   +1 more source

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