Results 171 to 180 of about 6,935 (225)
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IEEE Transactions on Geoscience and Remote Sensing, 1993
For use in oceanographic applications the geoid is ideally needed to a high accuracy and to a high resolution. In 1979 the cumulative geoid undulation error to spherical harmonic degree 20 was +or-1.4 m for the GEM10 potential coefficient model. Today the corresponding value has been reduced to +or-25 cm for GEM-T3 or +or-11 cm for the OSU91A model ...
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For use in oceanographic applications the geoid is ideally needed to a high accuracy and to a high resolution. In 1979 the cumulative geoid undulation error to spherical harmonic degree 20 was +or-1.4 m for the GEM10 potential coefficient model. Today the corresponding value has been reduced to +or-25 cm for GEM-T3 or +or-11 cm for the OSU91A model ...
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2013
Il testo sviluppa con completezza gli argomenti classici e moderni relativi alla determinazione del geoide in geodesia fisica. Il testo è diviso in tre parti, dai titoli "Theory", "Methods and Applications" e "Advanced Analysis Methods". Fernando Sansò è autore della prima (da pag.3 a pag. 256) e della terza parte (da pag. 547 a pag. 704).
O. B. Andersen +6 more
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Il testo sviluppa con completezza gli argomenti classici e moderni relativi alla determinazione del geoide in geodesia fisica. Il testo è diviso in tre parti, dai titoli "Theory", "Methods and Applications" e "Advanced Analysis Methods". Fernando Sansò è autore della prima (da pag.3 a pag. 256) e della terza parte (da pag. 547 a pag. 704).
O. B. Andersen +6 more
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Comparison of gravimetric geoids with Geos 3 altimetric geoid
Journal of Geophysical Research: Solid Earth, 1979By means of 1° × 1° gravimetric geoids in the North Atlantic, Northwest Pacific, and Indian oceans, comparisons have been made with Geos 3 radar altimeter estimates of geoid height. Most commonly, there are constant offsets and long‐wavelength discrepancies between the two data sets; there are many probable causes, including radial orbit error, scale ...
Michael E. Chapman, Manik Talwani
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The Geological Significance of the Geoid
Annual Review of Earth and Planetary Sciences, 1985data are being used to study terrestrial phenomena at scales from tens of thousands of kilometers down to hundreds or even tens of kilometers. This paper focuses on the interpretation of global gravity in the form of the geoid and concentrates on what has already been learned from it about the structure of the Earth at long-to-intermed iate wavelengths.
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Australian Surveyor, 1972
Abstract This paper describes the determination of the geoid in Australia relative to the Australian Geodetic Datum by the method of astro-geodetic levelling. Gravity observations have been used to fill in detail, but the gravity results everywhere have been adjusted to the astro-geodetic framework. A preliminary geoid has been calculated for Papua and
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Abstract This paper describes the determination of the geoid in Australia relative to the Australian Geodetic Datum by the method of astro-geodetic levelling. Gravity observations have been used to fill in detail, but the gravity results everywhere have been adjusted to the astro-geodetic framework. A preliminary geoid has been calculated for Papua and
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Numerical Analysis of Gravimetric Geoid and Geometrical Geoid over Peninsular Malaysia
2021 IEEE 12th Control and System Graduate Research Colloquium (ICSGRC), 2021Height is a vital element in surveying and mapping applications. With the latest space technology, the height of the earth’s surface can easily be derived by adding the element of the geoid. Geoid can be derived geometrically and gravimetrically. Classically, gravimetric geoid derived based on a combination of gravity and digital elevation model data ...
Nurzaitie Aflah Abdullah +2 more
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Quasigeoid-to-geoid determination by EGM08
Earth Science Informatics, 2012We present a method to estimate the difference between quasigeoid and geoid heights globally from the Earth Gravitational Model EGM08 and a related topographic model. The numerical computations with the standard topographic density of 2.67 g/cm3 show that the maximum and minimum of the separations are estimated to 5.47 m and −0.11 m on the Tibet ...
Lars E. Sjöberg, Mohammad Bagherbandi
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Eos, Transactions American Geophysical Union, 1957
The author gives a summary of the preparatory work, collection of the needed gravity material, reduction method used, the gravity anomaly maps of different types needed, and the details of the method of computation of the geoid. Using the available materials, 6679 squares of 1° X 1°, four times larger than was available in 1928, several new gravity ...
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The author gives a summary of the preparatory work, collection of the needed gravity material, reduction method used, the gravity anomaly maps of different types needed, and the details of the method of computation of the geoid. Using the available materials, 6679 squares of 1° X 1°, four times larger than was available in 1928, several new gravity ...
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The deviations of the sea surface from the geoid and their effect on geoid computation
Bulletin Géodésique, 1977The effects of the deviations of sea surface topography from the geoid are estimated for terrestrial geoid computations as obtained from Stokes’ formula. The results are based on an equal-area expansion of Lisitzin's sea surface topography data in a spherical harmonic series.
Jürgen Brennecke, Erwin Groten
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A New Detailed Geoid for Latvia
1997A new geoid of Latvia, computed from available gravity data and newly digitised data, as well as gravity data derived from ERS-1 geodetic mission data in the Baltic Sea is described. Computations were carried out by spherical FFT techniques on a 1.5′ × 3.0′ grid.
Jānis Kaminskis, Forsberg, Rene
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