Three‐dimensional mantle dynamics with an endothermic phase transition

S. Honda, S. Balachandar, David A Yuen, D. Reuteler

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


Three‐dimensional convection for the spinel to perovskite phase change has been simulated numerically. Results for Rayleigh (Ra) numbers of 0(106) show intermittent layering with a strong robust plume rising through the phase boundary. Many descending instabilities are deflected but merging cold sheets come together at a junction. A pool of cold material accumulates underneath in the phase‐transition zone. A strong gravitational instability results, which precipitates a rapid and massive discharge of upper‐mantle material.

Original languageEnglish (US)
Pages (from-to)221-224
Number of pages4
JournalGeophysical Research Letters
Issue number3
StatePublished - Feb 5 1993


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