Centre de documentation
scientifique

Estimation of sea dynamic topography, ocean tides, and secular changes from Topex altimeter data / Y.M. Wang (1994)

Public Titre : Estimation of sea dynamic topography, ocean tides, and secular changes from Topex altimeter data Type de document : Monographie Auteurs : Y.M. Wang, Auteur ; R.H. Rapp, Auteur Editeur : Colombus (Ohio) : Ohio State University Année de publication : 1994 Collection : Department of Geodetic Science and Surveying Reports num. 430 Importance : 86 p. Format : 21 x 27 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale [Termes IGN] données altimétriques [Termes IGN] fonction harmonique [Termes IGN] harmonique sphérique [Termes IGN] hauteurs de mer [Termes IGN] marée océanique [Termes IGN] perturbation séculaire [Termes IGN] TOPEX [Termes IGN] valeur efficace Index. décimale : 30.52 Marégraphie et niveau moyen des mers Résumé : (Auteur) Sea surface dynamic topography (SSDT) has been determined from the separation of the Topex sea surface height and the geoid undulations implied by the JGM-2/OSU91A merged potential coefficient model. The SSDT was initially analyzed to determine annual and semiannual variations in the ocean surface, corrections to the M2, S2, K1, 01 constituents of the Cartwright/Ray tide model, and bias and bias rate terms. All correction terms were represented by spherical series to degree 8 (for most testing purposes) and to degree 15 for final runs. The most complete analysis was done with Topex cycles 4 to 58. From this solution we found that the root mean square annual signal was ±4.5 cm in the Northern Hemisphere and ±3.5 cm in the Southern Hemisphere with an overall amplitude of ±4.0 cm. Large 'annual signals were associated with features such as the Kurishio Current (±10 cm), Gulf Stream (±7 cm) and the Falkland Current (±6 cm). The tide correction terms were ±2.9 CM (MA ±1.5 CM (S2), +0.8 CM (01), ±1.4 cm. (K1). The improvement in the tide model was proven through comparisons at the 104/95 tide gauge data set provided by C. Le Provost. The bias rate value was determined at each normal point and then averaged to determine a mean rate of 4.8 mm/yr. - After removing an altimeter drift rate of 2.0 mm/yr the net rate is 2.8 mm/yr., This rate could be a combination of sea level change and effects associated with the various correction terms applied to the data. The second main theme of the report relates to the representation of SSDT in spherical harmonics (SH) and orthonormal (ON) functions. Procedures were implemented to estimate either SH or ON coefficients. It was found that the estimation of SH coefficients was more stable than the ON estimation. For those applications on which spectral information of SSDT is needed a SH model can be transformed into an ON model. It was found that the lower degree SH coefficients are quite sensitive to the -bias correction applied to the sea surface height data. This sensitivity does not occur in ON coefficient estimation. For the analysis with data from cycles 4 to 58 a bias term of 55 cm. was applied to the data. This value leads to a zero value for the degree zero term in the ON expansion. An SH expansion to degree 24 was computed using a priori degree variance computed from 10 selected cycles of Topex data. The SH expansion was transformed to an ON expansion and both coefficient sets are given in the report. The degree 2,0 coefficient in the SH representation was -37.8 cm quite comparable with other altimeter based solutions. The analysis of the ON coefficient indicated an rms value of SSDT equal to ±61 cm. The ON- power spectrum, in conjunction with the geoid undulation accuracy of the JGM-2 model in the ocean areas, indicated the two values are approximately equal near degree 13. This suggests that SSDT estimates above degree 13 may be unreliable. This statement was consistent with the inconsistency of geostrophic flow patterns implied, by the SSDT expansions at the higher degrees. Even at the lower (e.g. 13) degree the flow patterns showed only moderate agreement with known circulation patterns. Numéro de notice : 12110 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54539

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
12110-01	30.52	Livre	Centre de documentation	Géodésie	Disponible

Oceanwide prediction of gravity anomalies and sea surface heights using GEOS-3, Seasat, and Geosat altimeter data and Etopo5u bathymetric data / Tomislav Basic (1992)

Public Titre : Oceanwide prediction of gravity anomalies and sea surface heights using GEOS-3, Seasat, and Geosat altimeter data and Etopo5u bathymetric data Type de document : Monographie Auteurs : Tomislav Basic, Auteur ; R.H. Rapp, Auteur Editeur : Colombus (Ohio) : Ohio State University Année de publication : 1992 Collection : Department of Geodetic Science and Surveying Reports num. 416 Importance : 89 p. Format : 21 x 27 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Nivellement [Termes IGN] anomalie de pesanteur [Termes IGN] bathymétrie [Termes IGN] données altimétriques [Termes IGN] GEOSAT [Termes IGN] pesanteur terrestre [Termes IGN] Seasat [Termes IGN] surface de la mer Index. décimale : 30.50 Nivellement - généralités Numéro de notice : 12096 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54526

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
12096-01	30.50	Livre	Centre de documentation	Géodésie	Disponible

Determination of the geoid / R.H. Rapp (1991)

Public Titre : Determination of the geoid : present and future, IAG symposium, Milan, 1990 Type de document : Actes de congrès Auteurs : R.H. Rapp, Éditeur scientifique ; Fernando Sanso, Éditeur scientifique Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 1991 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 106 Conférence : IAG 1990, symposium, Determination of the geoid : present and future 11/06/1990 13/06/1990 Milan Italie Importance : 500 p. Format : 21 x 28 cm ISBN/ISSN/EAN : 978-0-387-97470-5 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie [Termes IGN] géoïde gravimétrique [Termes IGN] nivellement indirect [Termes IGN] nivellement par GPS [Termes IGN] potentiel de pesanteur terrestre [Termes IGN] transformation de Fourier Index. décimale : CG1990 Actes de congrès en 1990 Numéro de notice : 61856 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Actes Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=36293

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
61856-01	CG.90	Livre	Centre de documentation	En réserve M-103	Disponible

Geoid gradients for Geosat and Topex-Poseidon repeat ground tracks / Y.M. Wang (1991)

Public Titre : Geoid gradients for Geosat and Topex-Poseidon repeat ground tracks Type de document : Monographie Auteurs : Y.M. Wang, Auteur ; R.H. Rapp, Auteur Editeur : Colombus (Ohio) : Ohio State University Année de publication : 1991 Collection : Department of Geodetic Science and Surveying Reports num. 408 Importance : 26 p. Format : 21 x 27 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique [Termes IGN] géoïde [Termes IGN] GEOSAT [Termes IGN] gradient [Termes IGN] TOPEX-Poseidon Index. décimale : 30.41 Géoïde Numéro de notice : 12100 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54530

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
12100-01	30.41	Livre	Centre de documentation	Géodésie	Disponible

The development of the july 1989 1° x 1° and 30' x 30' terrestrial mean free-air anomaly data bases / J.H. Kim (1990)

Public Titre : The development of the july 1989 1° x 1° and 30' x 30' terrestrial mean free-air anomaly data bases Type de document : Monographie Auteurs : J.H. Kim, Auteur ; R.H. Rapp, Auteur Editeur : Colombus (Ohio) : Ohio State University Année de publication : 1990 Collection : Department of Geodetic Science and Surveying Reports num. 403 Importance : 98 p. Format : 21 x 27 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique [Termes IGN] anomalie de pesanteur Index. décimale : 30.40 Géodésie physique Numéro de notice : 12091 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54521

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
12091-01	30.40	Livre	Centre de documentation	Géodésie	Disponible

Advances in geodesy : selected papers from reviews of geophysics and space / Erik W. Grafarend (1984)

Permalink

18th general assembly International Union of Geodesy and Geophysics (IUGG), Hamburg, FRG, August 15-27, 1983 : Proceedings of the International Association of Geodesy (IAG) symposia, Volume 1. The role of gravimetry in geodynamics & improved gravity field estimations on a global basis / Erwin Groten (1983)

Permalink

Ellipsoidal corrections for geoid undulation computations / R.H. Rapp (1981)

Permalink

The use of gravity anomalies on a bounding sphere to improve potential coefficient determinations / R.H. Rapp (1977)

Permalink

Methods for the computation of detailed geoids and their accuracy / R.H. Rapp (1975)

Permalink

Procedures and results related to the direct determination of gravity anomalies from satellite and terrestrial gravity data / R.H. Rapp (1974)

Permalink

Accuracy of potential coefficients determinations from satellite altimetry and terrestrial gravity / R.H. Rapp (1971)

Permalink

Implementation suggestions for the direct combinaison of satellite and gravimetric data / R.H. Rapp (1971)

Permalink

The direct combinaison of satellite and gravimetric data for mean anomaly determination / R.H. Rapp (1971)

Permalink

A general combination of satellite and gravity data for position and gravity field determinations / R.H. Rapp (1970)

Permalink