Thrust Faults, Subduction Zones and Global Mantle Flow

PI将开发几个数值公式， 研究粘性流中的类断层行为的目的 计算，特别适用于理解动力学 俯冲带 他将比较配方，包括 目前用于平板计算的公式，使用 可观察到的重力和地形剖面，应力 分布（在板块和板块），压缩和 伸展构造环境（例如，背弧形成 盆地或山脉带）、板块速度和板块倾角。 这 有系统的比较不仅可以突出优势， 各种方法的弱点，它将提请注意 特征是一种特定方法所特有的， 该方法的伪像，而不是断层的鲁棒特征。 另一方面，由于每个方法都是建立在不同的 假设，方法的比较可能会导致 对可观测量中的唯一签名的理解（例如， 地形和大地水准面剖面、板块倾角、构造环境） 这可以用来预测身体的优势或缺乏， 在特定的俯冲带的过程。

The PI will develop several numerical formulations for the purpose of studying fault-like behavior in viscous flow calculations, specifically applied to understanding the dynamics of subduction zones. he will compare formulations, including the formulations currently used in plate calculations, using observables such a gravity and topography profiles, stress distributions (in the plate and slab), compressional and extensional tectonic environments (e.g., formation of back arc basins or mountain belts), plate velocity and slab dip. This systematic comparison will not only highlight strengths and weaknesses of the various methods, it will call attention to features which are unique to one particular methods and may be an artifact of that method, not a robust characteristic of faulting. On the other hand, since each method is built on different set of assumptions, a comparison of approaches may lead to an understanding of unique signatures in the observables (e.g., topography and geoid profiles, slab dip, tectonic environment) which could be used to predict the dominance or absence of physical processes in specific subduction zones.