Material properties for mantle convection consistent with observed surface fields

Details Material properties for mantle convection consistent with observed surface fields Material properties for mantle convection consistent with observed surface fields

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.7031k&link_type=abstract

Journal of Geophysical Research, vol. 85, Dec. 10, 1980, p. 7031-7044. Research supported by the Australian National University

Mathematics

Logic

49

Convection, Earth Mantle, Geodynamics, Rheology, Earth Surface, Planetary Boundary Layer, Planetary Composition, Plates (Tectonics), Rayleigh Number, Seismic Energy, Spherical Harmonics

Scientific paper

An attempt is made to derive constraints on mantle convection from observed surface fields: plate velocities, gravity, topography and heat flow. The spherical harmonic spectra of the fields are expressed in terms of a spectral magnitude and slope, and requirements for the minimal representation of the equations for mantle convection are discussed. The effects of the boundary layer represented by the surface fields on convection at the mantle surface and at deeper levels are then examined, and a mean value of the effective mantle viscosity of approximately 10 to the 23rd g/cm per sec is obtained, together with values of 10 to the 8th and 10 to the 7th for the Rayleigh numbers of whole mantle and upper mantle convection, respectively. Consideration is then given to the compositional, thermal and rheological aspects of mantle convection, and it is pointed out that constraints on the depth and other properties of convection will require more detailed modeling using the relationships between the harmonic coefficients of the surface fields.

Affiliated with

Also associated with

No associations

Rating

Material properties for mantle convection consistent with observed surface fields does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Material properties for mantle convection consistent with observed surface fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Material properties for mantle convection consistent with observed surface fields will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-755491