In:
Geophysical Research Letters, American Geophysical Union (AGU), Vol. 23, No. 16 ( 1996-08), p. 2033-2036
Abstract:
The issue concerning the dominant creep mechanism in mantle convection has been studied numerically with a rheology incorporating both linear and non‐linear elements. We have employed a rheology suggested by the recently obtained melting temperature of lower‐mantle constituents. For an effective Rayleigh number between 10 5 and 10 6 this type of strongly temperature and pressure‐dependent rheology induces a circulation in the Earth's mantle, which is characterized by a sluggish type of flow in the lower mantle with a, prevailing Newtonian character, while in the upper mantle much more vigorous flows are developed in a predominantly non‐Newtonian rheology.
Type of Medium:
Online Resource
ISSN:
0094-8276
,
1944-8007
Language:
English
Publisher:
American Geophysical Union (AGU)
Publication Date:
1996
detail.hit.zdb_id:
2021599-X
detail.hit.zdb_id:
7403-2
SSG:
16,13
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