Modeling the Dispersion of Plume Heads Beneath Ridges and the Growth of Large Igneous Provinces

这项研究将使用数值模型和实验室(模拟)模型相结合的方法来研究烟柱头部与其撞击的上覆岩石圈板块之间的扩散和相互作用。模型将包括熔化、在轴和离轴情况下的影响，以及脊线分段和板块流变性对沿轴流动的影响。模型包括二维和三维数值模型以及三维比例模拟模型。建模将包括两个羽毛头部(嘴唇)，以及它们更稳定的尾巴。总的来说，这些实验将探索在一系列条件下羽流头部的热、成分和动态演变。更具体的模型将研究安通-爪哇高原系统的情况--地球上已知的最大的羽流头部。建模工作是观察、理论、预测、更多观察的循环的一部分，预计将导致具体的消耗臭氧层物质钻探建议。

This study will use a combination of numerical and laboratory (analog) models to investigate the dispersal and interaction between plume heads and the overlying lithospheric plates upon which they impinge. Models will include the effects of melting, on and off-axis cases, and the influence of ridge segmentation and plate rheology on along-axis flow. Models include both 2D and 3D numerical models and 3D scaled analog ones. The modeling will include both plume heads (LIPs), and their more steady-state tails. In general, the experiments will explore the thermal, compositional, and dynamic evolution of plume heads for a range of conditions. More specific models will examine the case of the Ontong-Java plateau system- the earth's largest known plume head. The modeling efforts are part of a cycle of observations, theory, predictions, more observation which is expected to lead to specific ODP drilling proposals.