期刊
EARTH AND PLANETARY SCIENCE LETTERS
卷 287, 期 3-4, 页码 329-332出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.epsl.2009.08.015
关键词
mantle convection; heat flow; oceanic lithosphere
资金
- U.S. National Science Foundation [EAR-0449517]
Small-scale convection in the suboceanic mantle, if present, is commonly thought to manifest in surface heat flux, and the steady-state scaling of sublithospheric convection has often been used to interpret heat flow data from old_ocean basins. Relations among small-scale convection, surface heat flux, and the steady-state scaling, however, have been vague. A series of transient cooling modeling are conducted here to quantify such relations. Given the strong temperature-dependency of mantle viscosity, results suggest that small-scale convection could take place without noticeably disturbing surface heat flux, and that the use of steady-state scaling may not be warranted for the present-day suboceanic mantle. (C) 2009 Elsevier B.V. All rights reserved.
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