Abstract
The Earth deforms periodically due to the varying weight of the ocean tides. Classical terrestrial geodetic techniques such as gravimetry, strain and tilt observe this deformation clearly. Also space geodetic techniques have reached an accuracy level where this loading signal can no longer be ignored. We present here the basic physical assumptions that underlie, and the derivation of, the mathematical framework that is used nowadays to compute these deformations. Special attention has been paid to the definition of the boundary conditions, how to treat the fluid core and the peculiarities that surround the deformation of the solid Earth at degree one. Also a short explanation of the Longman-Paradox is given. Finally, we discuss numerical methods to solve the differential equations and how to form the Green's functions that describe the ocean tide loading due to a point load.
The devil is in the details
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Notes
- 1.
Almost ignore; you need to assume that \(g(r)/r=\hbox{const}.\) in order to retain the structure of the analytical solution (Vermeersen et al. 1996).
References
Agnew D (2007) Earth tides. In: Herring T (eds) Treatise on geophysics: geodesy, Elsevier, Amsterdam, pp 163–195
Alterman Z, Jarosch H, Pekeris CL (1959) Oscillations of the Earth. Proc R Soc London, Ser A 252:80–95
Arfken G (1985) Mathematical methods for physicists. 3rd edn. Academic Press Inc, New York
Backus G (1986) Poloidal and toroidal fields in geomagnetic field modeling. Rev Geophys 24:75–109
Blewitt G (2003) Self-consistency in reference frames, geocenter definition, and surface loading of the solid earth. J Geophys Res 108: . doi:10.1029/2002JB002082
Bos MS, Baker TF, Røthing K, Plag HP (2002) Testing ocean tidemodels in the nordic seas with tidal gravity observations. Geophys J Int 150(3):687–694
Boyd JP (2000) Chebyshev and Fourier spectral methods. Dover Publications Inc, New York
Chinnery MA (1975) The static deformation of an Earth with a fluid core: a physical approach. Geophys J R Astron Soc 42:461–475
Dahlen FA (1974) On the static deformation of an Earth model with a fluid core. Geophys J Int 36:461–485. doi:10.1111/j.1365-246X.1974.tb03649.x
Dahlen FA, Fels SB (1978) A physical explanation of the static core paradox. Geophys J R Astr Soc 55:317–331
Dahlen FA, Tromp J (1998) Theoretical global seismology. Princeton University Press, Princeton
Dziewonski AM, Anderson DL (1981) Preliminary reference earth model. Phys Earth Planet Int 25:297–356
Farrell WE (1972) Deformation of the earth by surface loads. Rev Geophys Space Phys 10(3):761–797
Francis O, Mazzega P (1990) Global charts of ocean tide loading effects. J Geophys Res 95(C7):11,411–11,424
Gantmacher F (1950) The theory of matrices. vol 2, Chelsea Publishing Company, New York
Gilbert F, Backus GE (1966) Propagatormatrices in elasticwave and vibration problems. Geophysics 31:326–332
Guo JY, Ning JS, Zhang FP (2001) Chebyshev-collocation method applied to solve ODEs in geophysics singular at the Earth center. Geophys Res Lett 28:3027–3030. doi:10.1029/2001GL012886
Guo JY, Li YB, Huang Y, Deng HT, Xu SQ, Ning JS (2004) Green’s function of the deformation of the Earth as a result of atmospheric loading. Geophys J Int 159:53–68. doi:10.1111/j.1365-246X.2004.02410.x
Haskell NA (1953) The dispersion of surface waves in multilayered media. Bull Seism Soc Am 43:17–24
Hoskins LM (1910) The strain of a non-gravitating sphere of variable density. Trans Am Math Soc 11:494–504
Hoskins LM (1920) The strain of a gravitating sphere of variable density and elasticity. Trans Am Math Soc 21:1–43
Jekeli C (2007) Potential theory and static gravity field of the Earth. In: Herring T (ed) Treatise on Geophysics, vol 11. pp 11–42
Jentzsch G (1997) Earth tides and ocean tidal loading. In: Wilhelm H, Zurm W, Gwenzel H (ed) Tidal phenomena. pp 145
Kampfmann W, Berckhemer H (1985) High temperature experiments on the elastic and anelastic behavior of magmatic rocks. Phys Earth Planet Int 40:223–247
Kaula WM (1963) Elastic models of the mantle corresponding to variations in the external gravity field. J Geophys Res 68(17):4967–4978
Knopoff L (1964) Q Rev Geophys 2:625–660
Lamb H (1895) Hydrodynamics. Cambridge University Press, Cambridge
Lambeck Cazenave A K, Balmino G (1974) Solid Earth and ocean tides estimated from satellite orbit analyses. Rev Geophys Space Phys 12:421–434
Longman IM (1962) A Green’s function for determining the deformation of the Earth under surface mass loads, 1. theory. J Geophys Res 67(2):845–850
Longman IM (1963) A Green’s function for determining the deformation of the Earth under surfacemass loads, 2. computations and numerical results. J Geophys Res 68(2):485–496
Love AEH (1911) Some problems of geodynamics. Dover Publications Inc, New York, 1967
Malvern LE (1969) Introduction to the mechanics of a continuous medium. Prentice Hall Inc, Englewood Cliffs
Martinec Z (1989) Thomson–haskell matrix method for free spheroidal elastic oscillations. Geophys J Int 98:195–199. doi:10.1111/j.1365-246X.1989.tb05524.x
Merriam JB (1985) Toroidal love numbers and transverse stress at the Earth’s surface. J Geophys Res 90:7795–7802. doi:10.1029/JB090iB09p07795
Merriam JB (1986) Transverse stress Green’s functions. J Geophys Res 91:13903–13913. doi:10.1029/JB091iB14p13903
Müller G (1983) Generalised maxwell bodies and estimates of mantle viscosity. Royal Astron Soc Geophys J 87:1113–1141
Munk WH, MacDonald GJF (1960) The rotation of the Earth; a geophysical discussion. Cambridge [Eng.] University Press, Cambridge
Nowick A, Berry B (1972) relaxation in crystalline solids. Academic, New York
Okubo S (1988) Asymptotic solutions to the static deformation of the Earth-I. Spheroidal mode. Geophys J Int 92:39–51. doi:10.1111/j.1365-246X.1988.tb01119.x
Pekeris CL, Accad Y (1972) Dynamics of the liquid core of the Earth. R Soc London Philos Trans Ser A 273:237–260. doi:10.1098/rsta.1972.0093
Pekeris CL, Jarosch H (1958) The free oscillations of the Earth. In: Benioff H, Ewing M, Howell BF, Press F (eds) Contributions in geophysics in honor of Beno Gutenberg, Pergamon, New York, pp 171–192
Phinney RA, Burridge R (1973) Representation of the elastic—gravitational excitation of a spherical Earth model by generalised spherical harmonics. Geophys J R Astron Soc 34:451–487
Press WH, Flannery BP, Teukolsky SA, Vetterling WT (1988) Numerical recipes in C. Cambridge University Press, Cambridge
Rothwell EJ (2008) Computation of the logarithm of Bessel functions of complex argument and fractional order. Commun Numer Methods Eng 24:237–249. doi:10.1002/cnm.972
Ruotsalainen H (2001) Modernizing the finnish long water-tube tiltmeter. J Geod Soc Jpn 47:28–33
Scherneck H-G (1991) A parametrized solid Earth tide model and ocean tide loading effects for global geodetic baseline measurements. Geophys J Int 106:677–694
Slichter LB, Caputo M (1960) Deformation of an Earth model by surface pressures. J Geophys Res 65:4151. doi:10.1029/JZ065i012p04151
Sun W, Sjöerg LE (1999) Gravitational potential changes of a spherically symmetric Earth model caused by a surface load. Geophys J Int 137:449–468
Takeuchi H, Saito M (1972) Seismic surface waves. In: Bolt BA (eds) Seismology: surface waves and free oscillations, methods computer physics, Academic, San Diego, pp 217–295
Thomson W, Tait PG (1867) A treatise on natural philosophy. Oxford Press, Oxford
Vermeersen LLA, Sabadini R, Spada G (1996) Compressible rotational deformation. Geophys J Int 126:735–761. doi:10.1111/j.1365-246X.1996.tb04700.x
Wahr J, Sasao T (1981) A diurnal resonance in the ocean tide and in the Earth’s load response due to the resonant ‘free core nutation’. Geophys J R Astr Soc 64:747–765
Wu P, Peltier WR (1982) Viscous gravitational relaxation. Geophys J R Astr Soc 70:435–485
Wunsch C (1974) Simple models of the deformation of an Earth with a fluid core-I. Geophys J Int 39:413–419. doi:10.1111/j.1365-246X.1974.tb05464.x
Zschau J (1983) Rheology of the Earth’s mantle at tidal and Chandler wobble periods. In: Kuo J (ed) In: Proceedings of the 9th international symposium on Earth tides, E. Schweizerbart’sche Verlagsbuchhandlung (Nägele und Obermiller), Stuttgart, pp 605–629
Author information
Authors and Affiliations
Corresponding authors
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
Bos, M., Scherneck, HG. (2013). Computation of Green’s Functions for Ocean Tide Loading. In: Xu, G. (eds) Sciences of Geodesy - II. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-28000-9_1
Download citation
DOI: https://doi.org/10.1007/978-3-642-28000-9_1
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-27999-7
Online ISBN: 978-3-642-28000-9
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)