地壳榴辉岩化对板块俯冲碰撞影响的数值模拟

构建二维热力学模型，研究海洋俯冲，板块断裂和大陆俯冲三个连续阶段的海洋和大陆地壳榴辉岩化对板块动力学的影响。地壳榴辉岩化直接增加了平均板片密度，从而增加了板片拉力，使板片产生深度和陡峭的倾向。 通过数值模拟结果表明，从最初的大陆碰撞到板坯断裂的持续时间在很大程度上取决于板片拉力，模型结果可以为喜马拉雅 - 西藏碰撞带提供几个重要的意义，数据包括：平板俯冲区域的主要地球动力学参数，采用的粘滞性流变参数，数值模型中的主要材料参数等，时间，压力，气体常数，温度等。We developed a 2D thermomechanical model to investigate the impacts of oceanic and continental crustal eclogitization during three consecutive stages—oceanic subduction, slab breakoff, and continental subduction—on plate dynamics. Crustal eclogitization directly increases the average slab density, thereby enhancing slab pull and promoting the slab to deepen and become steeper. Numerical simulation results demonstrate that the duration from the initial continental collision to slab breakoff largely depends on slab pull. The model outcomes provide several key implications for the Himalayan-Tibetan collision zone. The dataset includes major geodynamic parameters of the flat subduction zone, adopted viscous rheological parameters, key material parameters used in the numerical model, as well as variables such as time, pressure, gas constant, and temperature.

搜集汇总

背景与挑战

背景概述

该数据集通过数值模拟研究地壳榴辉岩化对板块俯冲碰撞的影响，构建二维热力学模型分析海洋俯冲、板块断裂和大陆俯冲三个阶段，揭示榴辉岩化通过增加板片密度来增强板片拉力，从而影响板块动力学。数据涵盖喜马拉雅-西藏碰撞带的地球动力学参数、粘滞性流变参数和材料参数等，适用于地质学和地球科学研究。