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  • 1
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    Space geodesy monitors mass transports in global geophysical fluids (2000)
    In:  Eos Trans. AGU, Warszawa, Conseil de l'Europe, vol. 81, no. 22, pp. 247, 249 & 250, pp. L19608, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 2000
    Keywords: Review article ; Geodesy ; Gravimetry, Gravitation ; Fluids ; ConvolutionE ; ocean ; Earth tides ; TIDES ; 1200 ; Geodesy ; and ; gravity ; 1239 ; Rotational ; variations ; 1600 ; Global ; change ; CHAMP ; Very Long Baseline Interferometry ; Satellite Laser Ranging ; DOReservoir induced seismicity ; Global Positioning System ; earth Core ; glaciers ; Nino ; Volcanology ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; earth mantle ; atmosphere ; GGFC
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Tidal parameters for an inelastic Earth (1987)
    In:  Phys. Earth Plan. Int., London, Army Corps of Engineers, Woodward-Clyde Consultants, vol. 49, no. 6, pp. 97-116, pp. 1062, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 1987
    Keywords: Earth tides ; TIDES ; Inelastic ; Gravimetry, Gravitation ; PEPI
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Review of the earth tidal models and contribution of earth tides in geodynamics (1991)
    In:  J. Geophys. Res., London, Army Corps of Engineers, Woodward-Clyde Consultants, vol. 96, no. 6, pp. 20235-20240, pp. 1062, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 1991
    Keywords: geodyn ; Theoret. geophys. ; Earth tides ; JGR
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Are earthquakes responsible for the excitation of the FCN and/or of the FICN? (1996)
    In:  Physics of the Earth and Planetary Interiors, London, Army Corps of Engineers, Woodward-Clyde Consultants, vol. 94, no. 6, pp. 133-143, pp. 1062, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 1996
    Keywords: Earth rotation ; earth Core ; Chandler wobble ; PEPI
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    Earth's Core: Dynamics, Structure, Rotation (2003)
    AGU
    In:  Washington, D.C., 277 pp., AGU, vol. 31, no. 3, pp. 2-203, (ISBN 0-87590-533-1)
    Details
    Publication Date: 2003
    Keywords: earth Core ; GeodesyY ; Earth rotation ; Handbook of geophysics ; Handbook of geodesy
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    BIBLIOGRAPHY SEISMOLOGY
  • 6
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    Internal Energy Dissipation in Enceladus's Subsurface Ocean From Tides and Libration and the Role of Inertial Waves (2019)
    Wiley
    Details
    Publication Date: 2019
    Description: Abstract Enceladus is characterized by a south polar hot spot associated with a large outflow of heat, the source of which remains unclear. We compute the heat generated via viscous dissipation resulting from tidal and (longitudinal) libration forcing in the moon's subsurface ocean using the linearized Navier‐Stokes equation in a three‐dimensional spherical model. We conclude that libration is the dominant cause of dissipation at the linear order, providing up to ∼0.001 GW of heat to the ocean, which remains insufficient to explain the ∼10 GW observed by Cassini. We also illustrate how resonances with inertial modes can significantly augment the dissipation. Our work is an extension to Rovira‐Navarro et al. (2019, https://doi.org/10.1016/j.icarus.2018.11.010) to include the effects of libration and the presence of the icy crust. The model developed here is readily applicable to the study of other moons with a subsurface ocean and planets with a liquid core.
    Print ISSN: 2169-9097
    Electronic ISSN: 2169-9100
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 7
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    On the coupling between magnetic field and nutation in a numerical integration approach (2011)
    Wiley
    Details
    Publication Date: 2011-03-30
    Description: Nutation amplitudes are computed in a displacement field approach that incorporates the influence of a prescribed magnetic field inside the Earth's core. The existence of relative nutational motions between the liquid core and its surrounding solid parts induces a shearing of the magnetic field. An incremental magnetic field is then created, which in return perturbs the nutations themselves. This problem has already been addressed within a nutation model computed from an angular momentum budget approach. Here we incorporate the magnetic field influence directly in the motion equation and in the boundary conditions used in precise nutation theory, and a new strategy to compute nutations is established. As in previous studies, we assume that the root-mean-square of the radial magnetic field amplitude at the core-mantle boundary is 6.9 Gauss, that the magnetic diffusivity at the bottom of the mantle and in the fluid outer core side is 1.6 m2/s, and that the thickness of the conductive layer at the bottom of the mantle is 200 m. The Coriolis force is included in this work. The results show that the free core nutation period decreases by 0.38 days, and that the out-of-phase (in-phase) amplitudes of the retrograde 18.6 year and the retrograde annual nutations increase (decrease) by 20 and 39 μas, respectively. Comparisons of these results with previous studies are made, and discussions are also presented on the contribution of Coriolis force and the prescribed magnetic field on the coupling constants.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 8
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    Planetary science. A liquid core for Mars? (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-04-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dehant, Veronique -- New York, N.Y. -- Science. 2003 Apr 11;300(5617):260-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12690177" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; Evolution, Planetary ; Gravitation ; *Mars ; Pressure ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 9
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    Density and lithospheric thickness of the Tharsis Province from MEX MaRS and MRO gravity data (2012)
    Wiley
    Details
    Publication Date: 2012-04-04
    Description: Radio science tracking of Mars Express (MaRS experiment) and Mars Reconnaissance Orbiter produced high resolution Martian gravity data. Applying localized spectral analysis on the new gravity data sets, we study the surface density and lithospheric elastic thickness in the Tharsis province. The gravity signal is predicted with geophysical models either including bottom loading (top/bottom model) or taking into account the loading history (top/top model). Volcanic shields are mainly composed of high-density lava but their construction could have begun with lower density lava, with the exception of Ascraeus Mons which has a top of lower density. Buoyant bottom loading may have been present in the form of a mantle plume under Olympus Mons. The elastic thickness was much larger at Olympus Mons than at other volcanoes, suggesting large spatial variations of heat flux during the Hesperian. Alternatively, small elastic thicknesses could be artifacts reflecting the presence of very localized high-density crustal intrusions beneath the volcanoes. Thaumasia highlands were probably supported by a mantle plume at the time of formation. In Valles Marineris, top/bottom models predict low densities and large elastic thicknesses, in conflict with the basaltic rock composition and Hesperian age of the valley. Dense mafic dikes underlie the western part of the valley. The top/top model serves to test another scenario in which the trough is formed with sedimentary infilling removed much later by erosion, the elastic thickness increasing in between. At the large volcanoes, the relation between gravity and topography is anisotropic probably because of density variations.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 10
    Electronic Resource
    Electronic Resource
    Effect of the atmospheric pressure on surface displacements (1995)
    Springer
    Journal of geodesy 70 (1995), S. 131-139 
    Details
    ISSN: 1432-1394
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Summary Atmospheric pressure variations with periods of some days and months can be considered as loading functions on the Earth's surface and can induce quasi-periodic surface deformations. The influence of such surface displacements is calculated by performing a convolution sum between the mass loading Green's functions and the local and regional barometric pressure data (geographically distribution in a 1° × 1° grid system extending to more than 1000km). The results for 5 stations in Europe show that the average values reach about 22.9–30.2mm depending on the ocean response: the inverted or non-inverted barometer ocean model. The corresponding admittances are 0.576–0.758mm/mbar respectively. The horizontal displacements are not negligible but always smaller. The magnitudes are about 2–3mm for East-West component and 0.5–1.0mm for North-South component. The results of the dependence on the lateral extension of the pressure load show that the admittance for radial displacement varies from 0.250mm/mbar for a column load of 100km radius to 0.539mm/mbar for a column load of more than 1000km extension. It means that the main contribution of the loads comes from the horizontal distribution of the air pressure in a broad region. The time dependent effects of the atmospheric pressure are also computed with the two-coefficient correction equations provided by Rabbel & Zschau (1985) using ground pressure data in a 1.125° × 1.125° grid system. The computations demonstrate that the results are in good agreement with those obtained with a convolution sum. It shows that this method can provide us with a good approximation for vertical displacement caused by the deformation of the Earth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00943688
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    Paper (German National Licenses)
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