Geomorphic and Geodynamic Feedback During Orogenesis

本研究的目的是建立一个改进的造山模型，并进行数值实验，以揭示演化中的山带构造变形与地表过程之间的反馈性质和强度。实验将以从文献和数字高程模型中收集的活动山带地质和地形观测数据集为指导。为了实现这一目标，将综合现有的两个地表过程模型（SPMs），并构建一个考虑地形气候、化学风化和高山冰川作用的新模型。利用耦合模型预测了几个精心挑选的山带的宏观地貌和发掘模式，并对结果进行了观测检验。这项研究的最终结果应该是提高对演化中的山带构造变形和地表过程之间反馈的性质和强度的认识。

9526954 Willett The objective of this research is to construct an improved orogenesis model and conduct numerical experiments that will reveal the nature and strengths of feedback between tectonic deformation and surface processes in evolving mountain belts. The experiments will be guided by a dataset of geologic and topographic observations of active mountain belts, collected both from the literature and digital elevation models. To accomplish this objective, two extant surface-processes models (SPMs) will be synthesized, and a new model constructed that accounts for orographic climate, chemical weathering, and alpine glaciation. The macrogeomorphology and exhumation patterns of a few carefully selected mountain belts will be predicted using the coupled model and the results tested against observations. The ultimate outcome of this research should be an improved underqtanding of the nature and strengths of feedback between tectonic deformation and surface processes in evolving mountain belts.