Oceanic Upper Mantle Dynamics

该项目将继续对大洋上地幔中的流体动力学进行模拟研究。这些研究的重点将转移到板内、离轴过程，探索能够解释板内火山作用和构造的大洋物质动力学机制。将进行数值和实验室实验。首先，将探索三种机制：对流不稳定，岩石圈中的张性裂缝，以及在回流过程中低粘度地幔向高粘度地幔的粘性指进。

This project will continue modeling studies of the dynamics of flow in the oceanic upper mantle. The emphasis ofthese studies will be shifted to intraplate, off-axis processes, exploring mechanisms of oceanic matle dynamics that can explain intraplate volcanism and tectonics. Numerical and labratory experiments will be carried out. Initially, three mechanisms will be explored; convective instability, tensile cracks in the lithosphere, and viscous fingering of low-viscosity mantle into higher viscosity mantle during return flow.