Growing the Earth's D″ layer: Effect of density variations at the core-mantle boundary

Geophysical Research Letters

Volumn 24, Issue 22, 1997, Pages 2749-2752

  Kellogg, Louise H ^a  

^a UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

BOUNDARY LAYER FLOW; COMPUTER SIMULATION; DENSITY (SPECIFIC GRAVITY); FINITE ELEMENT METHOD; GEOCHEMISTRY; HEAT CONVECTION; MASS TRANSFER; MATHEMATICAL MODELS; MOLTEN MATERIALS; BOUNDARY LAYERS;

EARTH CORE MANTLE BOUNDARY; MANTLE D REGION; MANTLE UPWELLINGS; THERMOCHEMICAL MANTLE CONVECTION;

TECTONICS; FINITE ELEMENT METHOD;

CORE/MANTLE BOUNDARY; MANTLE STRUCTURE;

CHEMICAL BOUNDARY LAYERS; CORE-MANTLE BOUNDARY; ELEVATED TEMPERATURE; HETEROGENEOUS MATERIALS; HIGH-DENSITY MATERIALS; LOW-DENSITY MATERIALS; THERMO-CHEMICAL MANTLE CONVECTIONS; VARIABLE THICKNESS;

EID: 0031278040     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/97GL02952     Document Type: Article

References (11)

1. Boehler, R., A. Chopelas, and A. Zerr, Temperature and chemistry of the core-mantle boundary, Chem. Geol., 120, 199-205, 1995.
2. Farnetani, C. G., Excess temperature of mantle plumes: The role of chemical stratification across D″, Geophys. Res. Lett., 24, 1583-1586, 1997.
3. Garnero, E. J., S. P. Grand, and D. V. Helmberger, Low P-wave velocity at the base of the mantle, Geophys. Res. Lett., 20, 1843-1846, 1993.
4. Hansen, U., and D. A. Yuen, Numerical simulations of thermal-chemical instabilities at the core-mantle boundary, Nature, 234, 237-240, 1988.
5. Hansen, U., and D. A. Yuen, Nonlinear physics of double-diffusive convection in geological systems, Earth Sci. Rev., 29, 385-399, 1990.
6. Kellogg, L. H., and S. D. King, Effect of mantle plumes on the growth of D″ by reaction between the core and mantle, Geophys. Res. Lett., 20, 379-382, 1993.
7. 3 perovskite under high pressures up to 20 Gpa, Geophys. Res. Lett., 22, 1005-1008, 1995.
8. Vidale, J. E., and H. M. Benz, Seismological mapping of fine structure near the base of the Earth's mantle, Nature, 361, 529-532, 1993.
9. Williams, Q., and R. Jeanloz, Melting relations in the iron-sulfur system at ultra-high pressures: implications for the thermal state of the Earth, J. Geophys. Res., 95, 19,299-19,310, 1990.
10. Williams, Q., and E. J. Garnero, Seismic evidence for partial melt at the base of Earth's mantle; Science, 275, 1528-1530, 1996.
11. Wysession, M. E., L. Bartkó, and J. B. Wilson, Mapping the lowermost mantle using core-reflected shear waves, J. Geophys. Res., 99, 13,667-13,684, 1994.