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5 results for “Geoid”
Database from: Orthometric, Normal and Geoid Heights In the Context of the Brazilian Altimetric Network
<p>This dataset is part of an article entitled "ORTHOMETRIC, NORMAL AND GEOID HEIGHTS IN THE CONTEXT OF THE BRAZILIAN ALTIMETRIC NETWORK" (https://doi.org/10.1590/s1982-21702022000100003), published in the Bulletin of Geodesic Sciences.</p> <p>This dataset includes 569 stations whose values for geodetic and normal height, gravity and geopotential numbers are provided by the IBGE (Brazilian Institute of Geography and Statistics). In addition, we included orthometric height data and differences between orthometric and normal height data calculated from the Hemlert and Mader methods, using constant and variable density data provided by Medeiros et al. (2021) (https://doi.org/10.1016/j.jsames.2021.103425) and Sheng et al. (2019) (https://doi.org/10.1016/j.tecto.2019.04.005).</p> <p> </p>
Fatiando a Terra Data: Earth - Geoid height grid at 10 arc-minute resolution
<p>Global 10 arc-minute resolution grids of geoid height with respect to the WGS84 ellipsoid.</p> <p><strong>Note:</strong> This is a processed and formatted version of the source dataset below. It's meant for use in documentation and tutorials of the <a href="https://www.fatiando.org">Fatiando a Terra</a> project. Please <strong>cite the original authors</strong> when using this dataset.</p> <p><strong>Changes made: </strong>Convert the grid from the ASCII format of ICGEM to CF-compliant netCDF. Add relevant metadata, including names, units, datum, etc. Fix grid coordinates to be generated by <code>numpy.linspace</code> instead <code>numpy.arange</code> (or the equivalent used by ICGEM internally) to guarantee equal spacing to a higher accuracy. Export to compressed netCDF.</p> <p><strong>Source: </strong><a href="https://doi.org/10.5880/icgem.2015.1">EIGEN-6C4</a> spherical harmonic model (generated by the <a href="http://icgem.gfz-potsdam.de/home">ICGEM calculation service</a>)</p> <p><strong>Source license: </strong><a href="https://doi.org/10.5880/icgem.2015.1">CC-BY</a></p> <p><strong>Repository: </strong><a href="https://github.com/fatiando-data/earth-geoid-10arcmin">https://github.com/fatiando-data/earth-geoid-10arcmin</a></p>
Lithospheric structure and strength variations in Antarctica from joint modeling of elevation, geoid and seismic data
<p>These models include Moho depth, LAB depth and integrated lithospheric strength based on a 1D approach involving thermal analysis under local isostasy and a rheological method.</p>
Enhancing Regional Quasi-Geoid Refinement Precision: An Analytical Approach Employing ADS80 Tri-linear Array Stereoscopic Imageryand GNSS Gravity-Potential Leveling
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Enhancing Regional Quasi-Geoid Refinement Precision: An Analytical Approach Employing ADS80 Tri-linear Array Stereoscopic Imagery for Aerial Triangulation Densification and GNSS Gravity-Potential Leveling
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