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Internal loading of an inhomogeneous compressible Earth with phase boundariesThe geoid and the boundary topography caused by mass loads inside the earth were estimated. It is shown that the estimates are affected by compressibility, by a radially varying density distribution, and by the presence of phase boundaries with density discontinuities. The geoid predicted in the chemical boundary case is 30 to 40 percent smaller than that predicted in the phase case. The effects of compressibility and radially varying density are likely to be small. The inner core-outer core topography for loading inside the mantle and for loading inside the inner core were computed.
Document ID
19970020707
Document Type
Reprint (Version printed in journal)
Authors
Defraigne, P. (Belgian Royal Observatory Brussels Belgium)
Dehant, V. (Belgian Royal Observatory Brussels Belgium)
Wahr, J. M. (Colorado Univ. Boulder, CO United States)
Date Acquired
August 17, 2013
Publication Date
January 1, 1996
Publication Information
Publication: Geophysics J. Int.
Volume: 125
Subject Category
Geophysics
Report/Patent Number
NASA-CR-204984
Communications-Serie-A-117
NAS 1.26:204984
Funding Number(s)
CONTRACT_GRANT: NAGw-3034
CONTRACT_GRANT: NAGw-1942
Distribution Limits
Public
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