Descripteur
Termes IGN > sciences naturelles > sciences de la Terre et de l'univers > géosciences > géophysique interne > géodésie > géodésie physique > pesanteur terrestre > champ de pesanteur terrestre
champ de pesanteur terrestreSynonyme(s)champ de gravité terrestreVoir aussi |
Documents disponibles dans cette catégorie (384)
Ajouter le résultat dans votre panier
Visionner les documents numériques
Affiner la recherche Interroger des sources externes
Etendre la recherche sur niveau(x) vers le bas
Global geodetic observing system for geohazards and global change / Hans-Peter Plag in Géosciences, n° 9 (avril 2009)
[article]
Titre : Global geodetic observing system for geohazards and global change Type de document : Article/Communication Auteurs : Hans-Peter Plag, Auteur ; R. Gross, Auteur ; Markus Rothacher, Auteur Année de publication : 2009 Article en page(s) : pp 96 - 103 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] champ de pesanteur terrestre
[Termes IGN] figure de la Terre
[Termes IGN] Global Geodetic Observing System
[Termes IGN] gravimétrie
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] positionnement cinématique
[Termes IGN] rotation de la TerreRésumé : (Auteur) GGOS provides a basis on which advances in geoscience can be built. By considering the Earth system as a whole (including the geosphere, hydrosphere and biosphere), monitoring Earth system components and their interactions by geodetic techniques and studying them from the geodetic point of view, the geodetic community provides the geoscience community with a powerful tool consisting mainly of highly accurate observations, high-quality services, standards and references, and theoretical and observational innovations. Copyright BRGM Numéro de notice : A2009-145 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29775
in Géosciences > n° 9 (avril 2009) . - pp 96 - 103[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 076-09011 RAB Revue Centre de documentation En réserve L003 Disponible Les marées terrestres, la dynamique du manteau et la sismicité / Laurent Métivier in Géomatique expert, n° 67 (01/02/2009)
[article]
Titre : Les marées terrestres, la dynamique du manteau et la sismicité Type de document : Article/Communication Auteurs : Laurent Métivier , Auteur Année de publication : 2009 Article en page(s) : pp 36 - 39 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] champ de pesanteur terrestre
[Termes IGN] géoïde altimétrique
[Termes IGN] levé gravimétrique
[Termes IGN] manteau terrestre
[Termes IGN] marée terrestre
[Termes IGN] séisme
[Termes IGN] sismicitéRésumé : (Auteur) Comment les marées solides et la gravimétrie influent sur la sismicité : Compte-rendu d'une conférence de Laurent Métivier, du laboratoire Lareg de l'IGN. Numéro de notice : A2009-062 Affiliation des auteurs : LAREG (1991-2011) Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29692
in Géomatique expert > n° 67 (01/02/2009) . - pp 36 - 39[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 265-09021 RAB Revue Centre de documentation En réserve L003 Disponible IFN-001-P000319 RAB Revue Nogent-sur-Vernisson En réserve L003 Exclu du prêt Documents numériques
en open access
Les marées terrestres, la dynamique du manteau et la sismicitéAdobe Acrobat PDF
Titre : Observing our changing Earth Type de document : Actes de congrès Auteurs : Michael G. Sideris, Éditeur scientifique Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2009 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 133 ISBN/ISSN/EAN : 978-3-540-85425-8 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] champ de pesanteur terrestre
[Termes IGN] Global Geodetic Observing System
[Termes IGN] repère de référence
[Termes IGN] rotation de la TerreNote de contenu : Symposium GS001 Reference Frames
Symposium GS002 Gravity Field
Symposium GS003 Earth Rotation and Geodynamics
Symposium GS004 Positioning and Applications
Symposium GS005 The Global Geodetic Observing System (GGOS)Numéro de notice : 17530 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Actes nature-HAL : DirectOuvrColl/Actes DOI : 10.1007/978-3-540-85426-5 En ligne : https://doi.org/10.1007/978-3-540-85426-5 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90691 Optima multi-step collocation: application to the space-wise approach for GOCE data analysis / M. Reguzzoni in Journal of geodesy, vol 83 n° 1 (January 2009)
[article]
Titre : Optima multi-step collocation: application to the space-wise approach for GOCE data analysis Type de document : Article/Communication Auteurs : M. Reguzzoni, Auteur ; N. Tselfes, Auteur Année de publication : 2009 Article en page(s) : pp 13 - 29 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] analyse harmonique
[Termes IGN] champ de pesanteur terrestre
[Termes IGN] coefficient de géopotentiel
[Termes IGN] collocation
[Termes IGN] GOCE
[Termes IGN] harmonique sphérique
[Termes IGN] levé gravimétriqueRésumé : (Auteur) Collocation is widely used in physical geodesy. Its application requires to solve systems with a dimension equal to the number of observations, causing numerical problems when many observations are available. To overcome this drawback, tailored step-wise techniques are usually applied. An example of these step-wise techniques is the space-wise approach to the GOCE mission data processing. The original idea of this approach was to implement a two-step procedure, which consists of first predicting gridded values at satellite altitude by collocation and then deriving the geo-potential spherical harmonic coefficients by numerical integration. The idea was generalized to a multi-step iterative procedure by introducing a time-wise Wiener filter to reduce the highly correlated observation noise. Recent studies have shown how to optimize the original two-step procedure, while the theoretical optimization of the full multi-step procedure is investigated in this work. An iterative operator is derived so that the final estimated spherical harmonic coefficients are optimal with respect to the Wiener–Kolmogorov principle, as if they were estimated by a direct collocation. The logical scheme used to derive this optimal operator can be applied not only in the case of the space-wise approach but, in general, for any case of step-wise collocation. Several numerical tests based on simulated realistic GOCE data are performed. The results show that adding a pre-processing time-wise filter to the two-step procedure of data gridding and spherical harmonic analysis is useful, in the sense that the accuracy of the estimated geo-potential coefficients is improved. This happens because, in its practical implementation, the gridding is made by collocation over local patches of data, while the observation noise has a time-correlation so long that it cannot be treated inside the patch size. Therefore, the multi-step operator, which is in theory equivalent to the two-step operator and to the direct collocation, is in practice superior thanks to the time-wise filter that reduces the noise correlation before the gridding. The criteria for the choice of this filter are investigated numerically. Copyright Springer Numéro de notice : A2009-179 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-008-0225-x En ligne : https://doi.org/10.1007/s00190-008-0225-x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29809
in Journal of geodesy > vol 83 n° 1 (January 2009) . - pp 13 - 29[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 266-09011 RAB Revue Centre de documentation En réserve L003 Disponible 266-09012 RAB Revue Centre de documentation En réserve L003 Disponible Physically consistent system model for the study of the Earth's rotation, surface deformation and gravity field parameters / A. Hense (2009)
Titre : Physically consistent system model for the study of the Earth's rotation, surface deformation and gravity field parameters : scientific results of the DFG project Type de document : Monographie Auteurs : A. Hense, Auteur ; J. Sündermann, Auteur ; Hermann Drewes, Auteur ; et al., Auteur Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 2009 Collection : DGK - B Sous-collection : Angewandte Geodäsie num. 317 Importance : 53 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-8596-1 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] champ de pesanteur terrestre
[Termes IGN] circulation atmosphérique
[Termes IGN] circulation océanique
[Termes IGN] déformation de la croute terrestre
[Termes IGN] modèle hydrographique
[Termes IGN] modèle physique
[Termes IGN] pesanteur terrestre
[Termes IGN] rotation de la Terre
[Termes IGN] surcharge océanique
[Termes IGN] terme de ChandlerIndex. décimale : 30.40 Géodésie physique Résumé : (Auteur) [introduction] This report is the final report of a serie of projects which studied the Earth's rotational parameters angular momentum, tensor of inertia as well as related variables of the Earth's gravitational field. A system view has been taken by trying to incorporate the contributions from the various subsystems of the Earth system in a physically consistent way. This introduction will highlight the project history and performance since 1996 and the state of the art in 2000. Note de contenu : 1. Introduction
1.1 The projects
1.2 Historical overview and motivations
2. Models of subsystems
2.1 Atmosphere models ECHAM
2.1.1 ECHAM5
2.1.2 Stand-alone atmosphere 20th century simulation
2.1.3 Results
2.2 Ocean model OMCT
2.3 Hydrological Discharge Model HDM
2.3.1 Continental hydrology modelling
2.3.1.1 SLS model component
2.3.1.2 HDM model component
2.3.1.3 Atmospheric forcing data
2.3.2 Results
2.3.2.1 Implementation of a 3-D relief model
2.3.2.2 Calculation of gravity field coefficients
2.3.2.3 Test simulations and validation of continental discharge with ECHAM4 and NCEP
2.3.2.4 Verification of simulated continental runoff (control runs)
2.3.2.5 Interface adaptation and verification of mass conservation at the boundaries in the coupled model system
2.3.2.6 Validation and analysis of continental water mass transports of ECOCTH
2.3.2.7 Statistical analysis and validation of simulated gravity field variations
2.3.2.8 Global water balance
2.3.3 Summary
3. Models of the coupled system
3.1 Coupled atmosphere-hydrosphere model ECOCTH
3.1.1 Model description
3.1.2 Validation
3.1.2.1 The lunisolar ocean tides
3.1.2.2 Global ocean circulation
3.1.2.3 Tropical variability and global warming
3.1.3 Results
3.1.3.1 Inter-annual variations and secular trends in length of day
3.2 Dynamic model of Earth rotation, gravity and surface deformation DyMEG
3.2.1 Numerical solution of the Liouville differential equation
3.2.2 Inverse model for surface deformations of the solid Earth due to mass loads
4. Results for Earth rotation, surface deformation and gravity
4.1 Validation of DyMEG with NCEP and ECCO
4.2 Results of DyMEG with ECOCTH forcing
5. Scientific highlights
5.1 Tidal mixing
5.1.1 Tidal mixing in OMCT2
5.1.2 Effect of tidal mixing on ocean water mass properties
5.2 Secular and decadal variations
5.2.1 Coupled simulation of Earth Rotation Parameters
5.2.2 Axial AAM long-term trends in 21st century scenario runs
5.3 Forcing mechanisms of the Chandler oscillation
5.3.1 Atmospheric and hydrospheric excitation of the Chandler oscillation
5.3.2 Noise as excitation mechanism of the Chandler oscillation
6. Conclusions and outlook
7. ReferencesNuméro de notice : 15454 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62723 Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 15454-01 30.40 Livre Centre de documentation Géodésie Disponible A study reference frame consistency in recent Earth gravitational models / Christopher Kotsakis in Journal of geodesy, vol 83 n° 1 (January 2009)PermalinkOn the explicit determination of stability constants for linearized geodetic boundary value problems / Fernando Sanso in Journal of geodesy, vol 82 n° 12 (December 2008)PermalinkVariations in the accuracy of gravity recovery due to ground track variability: GRACE, CHAMP, and GOCE / J. Klokocnik in Journal of geodesy, vol 82 n° 12 (December 2008)PermalinkThe gravitational effect of ocean tide loading at high latitude coastal stations in Norway / D.I. Lysaker in Journal of geodesy, vol 82 n° 9 (September 2008)PermalinkRetrieving earthquake signature in GRACE gravity solutions / Olivier de Viron in Geophysical journal international, vol 174 n° 1 (July 2008)PermalinkLength-of-day and space-geodetic determination of the Earth's variable gravity field / G. Bourda in Journal of geodesy, vol 82 n° 4-5 (April - May 2008)PermalinkGOCE's measurements of the gravity field and beyond / R. Floberghaben in ESA bulletin, n° 133 (February 2008)PermalinkPractical geodesy: part 3 The geoid / Huibert-Jan Lekkerkerk in Geoinformatics, vol 10 n° 4 (01/06/2007)PermalinkNational report of the Federal Republic of Germany on the geodetic activities in the years 2003-2007, XXIV [24th] general assembly of the International Union for Geodesy and Geophysics (IUGG) 2007 in Perugia, Italy / J. Muller (2007)PermalinkPseudo-stochastic orbit modeling of low earth satellites using the Global Positioning System / Adrian Jäggi (2007)Permalink