The role of viscosity contrast on plume structure in laboratory modeling of mantle convection

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• 作者：Vivek N. Prakash^a ; ¹ ; K.R. Sreenivas^a ; ^{krs@jncasr.ac.in} ; Jaywant H. Arakeri^b
• 关键词：Mantle convection ; Viscosity contrast ; Rayleigh&ndash ; Taylor instability ; Plume dynamics
• 刊名：Chemical Engineering Science
• 出版年：2017
• 出版时间：2 February 2017
• 年：2017
• 卷：158
• 期：Complete
• 页码：245-256
• 全文大小：2425 K
• 卷排序：158

文摘

Flow visualization of plume structures at varying viscosity ratios (U). Mantle convection regimes for both hotspots and plate-subduction are captured. Planforms reveal cellular structures, line plumes and spherical plumes at different U. Planform plume spacing increases when U>1U>1 and U<1U<1. Plume mixing is maximum at U  =1, and decreases when U>1U>1 and U<1U<1.