volume 25, issue 11, P1999-2002 1998
DOI: 10.1029/98gl01228
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Abstract: Abstract. We have investigated the development of axisymmetric mantle plumes in a compressible mantle with temperature-dependent viscosity, using two different values for the thermal activation energy. Thermodynamic parameters were based on realistic Earth values in the shallow mantie. We assumed a compressible mantle with a phase transition and a two layer viscosity structure (mantle 30 times more viscous beneath the phase change). A dramatic transition in plume dynamics occurred as the thermal activation en…

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