Melting of the Earths inner core

Nature

Volumn 473, Issue 7347, 2011, Pages 361-364

  Gubbins, David ^a,b   Sreenivasan, Binod ^c   Mound, Jon ^a   Rost, Sebastian ^a  

^a UNIVERSITY OF LEEDS   (United Kingdom)

^b UNIVERSITY OF CALIFORNIA   (United States)

^c INDIAN INSTITUTE OF TECHNOLOGY KANPUR   (India)

Author keywords

[No Author keywords available]

Indexed keywords

COOLING; CORE-MANTLE BOUNDARY; FREEZING; GEODYNAMO; HEAT FLOW; INNER CORE; IRON; MAGNETIC FIELD; MANTLE; MELTING; SEISMIC VELOCITY;

ARTICLE; ASTRONOMY; EARTH INNER CORE; ENVIRONMENTAL TEMPERATURE; FREEZING; HEAT ACCLIMATIZATION; MELTING POINT; PRIORITY JOURNAL; SIMULATION; TOMOGRAPHY;

CALLUNA VULGARIS;

EID: 79956326040     PISSN: 00280836     EISSN: 14764687     Source Type: Journal    
DOI: 10.1038/nature10068     Document Type: Article

References (31)

1. Braginsky, S. I. Structure of the F layer and reasons for convection in the Earth's core. Dokl. Akad. Nauk. SSSR (Engl. Trans.) 149, 1311-1314 (1963).
2. Labrosse, S., Poirier, J.-P. &LeMouël,J.-L. On coolingofthe Earth's core. Phys. Earth Planet. Inter. 99, 1-17 (1997).
3. Nimmo, F., Price, G. D., Brodholt, J. & Gubbins, D. The influence of potassium on core and geodynamo evolution. Geophys. J. Int. 156, 363-376 (2004). (Pubitemid 38204753)
4. Nakagawa, T. & Tackley, P. J. Lateral variations in CMB heat flux and deep mantle seismic velocity caused by a thermal-chemical-phase boundary layer in 3D spherical convection. Earth Planet. Sci. Lett. 271, 348-358 (2008).
5. Souriau, A. & Poupinet, G. The velocity profile at the base of the liquid core from PKP(BC1Cdiff) data: anargument in favorof radial inhomogeneity. Geophys. Res. Lett. 18, 2023-2026 (1991).
6. Song, X. D. & Helmberger, D. V. Velocity structure near the inner core boundary from waveform modeling. J. Geophys. Res. 97, 6573-6586 (1992).
7. Monnereau, M., Calvet, M., Margerin, L. & Souriau, A. Lopsided growth of Earth's inner core. Science 328, 1014-1017 (2010).
8. Alboussière, T., Deguen, R. & Melzani, M. Melting-induced stratification above the Earth's inner core due to convective translation. Nature 466, 744-747 (2010).
9. Gubbins,D.,Masters,G.&Nimmo,F.Athermochemicalboundarylayeratthe base of Earth's outer core and independent estimate of core heat flux. Geophys. J. Int. 174, 1007-1018 (2008).
10. Aubert, J., Amit, H. & Hulot, G. Detecting thermal boundary control in surface flows from numerical dynamos. Phys. Earth Planet. Inter. 160, 143-156 (2007). (Pubitemid 46002551)
11. Masters, T. G., Johnson, S., Laske, G. & Bolton, H. F. A shear-velocity model of the mantle. Phil. Trans. R. Soc. Lond. A 354, 1385-1411 (1996).
12. Zhang, K. & Gubbins, D. Convection in a rotating spherical fluid shell with an inhomogeneous temperature boundary condition at finite Prandtl number. Phys. Fluids 8, 1141-1148 (1996). (Pubitemid 126609197)
13. Zhang, K. & Gubbins, D. Scale disparities and magnetohydrodynamics in the Earth's core. Phil. Trans. R. Soc. Lond. A 358, 899-920 (2000).
14. Gibbons,S.&Gubbins,D.Convectioninthe Earth's core drivenbylateral variations in the core-mantle boundary heat flux. Geophys. J. Int. 142, 631-642 (2000). (Pubitemid 30496548)
15. Sreenivasan,B.Ondynamoaction producedbyboundary thermal coupling. Phys. Earth Planet. Inter. 177, 130-138 (2009).
16. Bloxham, J. The effect of thermal core-mantle interactions on the paleomagnetic secular variation. Phil. Trans. R. Soc. Lond. A 358, 1171-1179 (2000).
17. Christensen, U., Olson, P. & Glatzmaier, G. A. A dynamo model interpretation of geomagnetic field structures. Geophys. Res. Lett. 25, 1565-1568 (1998). (Pubitemid 28429795)
18. Olson, P. & Christensen, U. R. The time-averaged magnetic field in numerical dynamos with non-uniform boundary heat flow. Geophys. J. Int. 151, 809-823 (2002). (Pubitemid 35420224)
19. Christensen, U. R. & Olson, P. Secular variation in numerical geodynamo models with lateral variations of boundary heat flow. Phys. Earth Planet. Inter. 138, 39-54 (2003). (Pubitemid 36810730)
20. Glatzmaier,G.A., Coe,R.S., Hongre,L.&Roberts,P.H.The role ofthe Earth'smantle in controlling the frequency of geomagnetic reversals. Nature 401, 885-890 (1999).
21. Kutzner, C. & Christensen, U. R. Simulated geomagnetic reversals and preferred virtual geomagnetic pole paths. Geophys. J. Int. 157, 1105-1118 (2004). (Pubitemid 38933454)
22. Gubbins, D., Willis, A.P. & Sreenivasan,B.Correlation of Earth's magnetic field with lower mantle thermal and seismic structure. Phys. Earth Planet. Inter. 162, 256-260 (2007). (Pubitemid 46958924)
23. Sreenivasan, B. & Gubbins, D. Dynamos with weakly convecting outer layers: implications for core-mantle boundary interaction. Geophys. Astrophys. Fluid Dyn. 102, 395-407 (2008).
24. Buffett, B. A. & Seagle, C. T. Stratification of the top of the core due to chemical interactions with the mantle. J. Geophys. Res. 115, B04407 (2010).
25. Helffrich, G. & Kaneshima, S. Outer-core compositional stratification from observed core wave speed profiles. Nature 468, 807-810 (2010).
26. Dziewonski,A.M.&Anderson,D.L.Preliminary Reference Earth Model. Phys. Earth Planet. Inter. 25, 297-356 (1981).
27. Gubbins, D., Alfè, D., Masters, T. G. & Price, D. Gross thermodynamics of 2-component core convection. Geophys. J. Int. 157, 1407-1414 (2004). (Pubitemid 38933475)
28. Moffatt, H. K. & Loper, D. E. The magnetostrophic rise of a buoyant parcel in the Earth's core. Geophys. J. Int. 117, 394-402 (1994). (Pubitemid 24427058)
29. Aubert, J., Amit, H., Hulot, G. & Olson, P. Thermochemical flows couple the Earth's inner core growth to mantle heterogeneity. Nature 454, 758-761 (2008).
30. Sreenivasan, B. A buoyant flow structure in a magnetic field: quasi-steady states and linear-nonlinear transitions. Phys. Lett. A 372, 5471-5478 (2008).
31. Sreenivasan, B. & Jones, C. A. The role of inertia in the evolution of spherical dynamos. Geophys. J. Int. 164, 467-476 (2006).