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Physically consistent system model for the study of the Earth's rotation, surface deformation and gravity field parameters / A. Hense (2009)

Public 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 Chandler Index. 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. References Numéro de notice : 15454 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62723

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
15454-01	30.40	Livre	Centre de documentation	Géodésie	Disponible