概括
这项研究模拟了带有断层的地幔对流,揭示了构造板块和相位变化如何影响地球地幔中的俯冲动力学和板块行为.
科学领域:
- 地质物理学 地质物理学
- 地球科学 地球科学 地球科学
- 计算机建模 计算建模
背景情况:
- 地幔对流是板块构造学的一个关键驱动因素.
- 了解俯冲区动态对于板块构造学至关重要.
- 现实的建模需要结合故障,形学和相位变化.
研究的目的:
- 在时间依赖的地幔对流模型中开发和应用有限元断层公式.
- 为了研究现实的风学,大陆和相位变化对俯冲的影响.
- 分析构造板块和地幔动态之间的自相一致的合.
主要方法:
- 将有限元断裂公式纳入地幔对流模型.
- 包含现实的风学,大陆和相位变化.
- 地力学过程的时间依赖模拟.
主要成果:
- 现实的构造板块形成了自相一致的板块-地幔合.
- 俯冲开始后观察到快速的沟回滚,最初在过渡区底部的板块.
- 与没有构造板块的模型相比,薄弱的透到下层地幔的抑制较小,特别是由于670公里的相变.
结论:
- 有限元断层模型提供了更现实的俯冲动态表现.
- 670公里的相位变化对板块透的抑制通过现实的构造板块来减少.
- 这种建模方法增强了我们对板块构造学和地幔演变的理解.
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