Mantle convection with longest-wavelength thermal heterogeneity in a 3-D spherical model: Degree one or two?

Geophysical Research Letters

Volumn 35, Issue 23, 2008, Pages

  Yoshida, Masaki ^a,b  

^a JAPAN AGENCY FOR MARINE EARTH SCIENCE AND TECHNOLOGY   (Japan)

^b Japan Agency for Marine Earth Science and Technology   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

ELASTICITY; PLASTICITY; RHEOLOGY; SPHERES; THREE DIMENSIONAL; VISCOSITY;

BASAL HEATING; BOUSSINESQ; BOUSSINESQ FLUIDS; HEATING MODES; MANTLE CONVECTIONS; RAYLEIGH NUMBERS; SHEET LIKES; SPHERICAL MODELS; TEMPERATURE DEPENDENTS; THERMAL CONVECTIONS; THERMAL HETEROGENEITIES; VISCOSITY CONTRASTS; VISCOUS DISSIPATIONS;

HEATING;

BOUSSINESQ EQUATION; GEOPHYSICS; HEATING; HETEROGENEITY; INCLUSION; MANTLE CONVECTION; RAYLEIGH NUMBER; RHEOLOGY; THERMAL CONVECTION; THREE-DIMENSIONAL MODELING;

EID: 60149111093     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2008GL036059     Document Type: Article

References (28)

1. Bunge, H. P., and M. A. Richards (1996), The origin of large scale structure in mantle convection: Effects of plate motions and viscosity stratification, Geophys. Res. Lett., 23(21), 2987-2990.
2. Christensen, U. R., and D. A. Yuen (1985), Layered convection induced by phase transitions, J. Geophys. Res., 90, 10,291-10,300.
3. Collins, W. J. (2003), Slab pull, mantle convection, and Pangaean assembly and dispersal, Earth Planet. Sci. Lett., 205, 225-237.
4. Davies, G. F. (1999), Dynamic Earth: Plates, Plumes and Mantle Convection, 458 pp., Cambridge Univ. Press., Cambridge, U.K.
5. Greff-Lefftz, M. (2004), Upwelling plumes, superwells and true polar wander, Geophys. J. Int., 159, 1125-1137.
6. Gurnis, M. (1988), Large-scale mantle convection and the aggregation and dispersal of supercontinents, Nature, 332, 695-699.
7. Lay, T., J. Hernlund, E. J. Garnero, and M. S. Thorne (2006), A post-perovskite lens and D" heat flux beneath the central Pacific, Science, 314, 1272-1276.
8. Lay, T., J. Hernlund, and B. Buffett (2008), Core-mantle boundary heat flow, Nat. Geosci., 1, 25-32.
9. Leng, W., and S. Zhong (2008), Controls on plume heat flux and plume excess temperature, J. Geophys. Res., 113, B04408, doi: 10.1029/2007JB005155.
10. Masters, G. L. G., H. Bolton, and A. Dziewonski (2000), The relative behaviour of shear velocity, bulk sound speed, and compressional velocity in the mantle: Implications for chemical and thermal structure, in Earth's Deep Interior: Mineral Physics and Tomography From the Atomic to the Global Scale, Geophys. Monogr. Sen, vol. 117, edited by S. Karato et al., pp. 63-87, AGU, Washington, D.C.
11. McNamara, A. K., and S. Zhong (2005), Degree-one mantle convection: Dependence on internal heating and temperature-dependent rheology, Geophys. Res. Lett., 32, L01301, doi:10.1029/2004GL021082.
12. Mittelstadt, E., and P. J. Tackley (2006), Plume heat flow is much lower than CMB heat flow, Earth Planet. Sci. Lett., 241, 201-210.
13. Moresi, L., and V. Solomatov (1998), Mantle convection with a brittle lithosphere: Thoughts on the global tectonic styles of the Earth and Venus, Geophys. J. Int., 133, 669-682.
14. Nakada, M. (2007), True polar wander associated with continental drift on a hypothetical Earth, Earth Planet. Space, 59, 513-522.
15. Ratcliff, J. T., P. J. Tackley, G. Schubert, and A. Zebib (1997), Transitions in thermal convection with strongly variable viscosity, Phys. Earth Planet. Inter., 102, 201-212.
16. Ritsema, J., H. J. van Heijst, and J. H. Woodhouse (1999), Complex shear wave velocity structure imaged beneath Africa and Iceland, Science, 286, 1925-1928.
17. Roberts, J. H., and S. Zhong (2006), Degree-1 convection in the Martian mantle and the origin of the hemispheric dichotomy, J. Geophys. Res., 111, E06013, doi:10.1029/2005JE002668.
18. Schubert, G., D. L. Turcotte, and P. Olson (2001), Mantle Convection in the Earth and Planets, 940 pp., Cambridge Univ. Press, U.K.
19. Solomatov, V. S. (1993), Parameterization of temperature-and stress-dependent viscosity convection and the thermal evolution of Venus, in Flow and Creep in the Solar System: Observations, Modeling and Theory, edited by D. B. Stone and S. K. Runcorn, NATO ASI Ser. Ser E, vol. 391, pp. 131-145, Kluwer, Netherlands.
20. Torsvik, T. H. (2003), The Rodinia jigsaw puzzle, Science, 300, 1379-1381.
21. Turcotte, D. L., and G. Schubert (2002), Geodynamics, 2nd ed., 456 pp., Cambridge Univ. Press, U.K.
22. van der Hilst, R. D., M. V. de Hoop, P. Wang, S. H. Shim, P. Ma, and L. Tenorio (2007), Seismostratigraphy and thermal structure of Earth's core-mantle boundary region, Science, 315, 1813-1817.
23. Yoshida, M. (2008), Core-mantle boundary topography estimated from numerical simulations of instantaneous mantle flow, Geochem. Geophys. Geosyst., 9, Q07002, doi:10.1029/2008GC002008.
24. Yoshida, M., and A. Kageyama (2006), Low-degree mantle convection with strongly temperature- and depth-dependent viscosity in a three-dimensional spherical shell, J. Geophys. Res., 111, B03412, doi:10.1029/2005JB003905.
25. Yoshida, M., and M. Ogawa (2005), Plume heat flow in a numerical model of mantle convection with moving plates, Earth Planet. Sci. Let., 239, 276-285.
26. Zhang, S., and D. A. Yuen (1996), Various influences on plumes and dynamics in time-dependent, compressible mantle convection in 3-D spherical shell, Phys. Earth Planet. Inter., 94, 241-267.
27. Zhong, S. (2006), Constraints on thermochemical convection of the mantle from plume heat flux, plume excess temperature, and upper mantle temperature, J. Geophys. Res., 111, B04409, doi:10.1029/2005JB003972.
28. Zhong, S., N. Zhang, Z.-X. Lib, and J. H. Roberts (2007), Supercontinent cycles, true polar wander, and very long-wavelength mantle convection, Earth Planet. Sci. Lett., 261, 551-564.