How the Earth moves: Developing a novel seismological approach to map the small-scale dynamics of the upper mantle

地球如何运动：开发一种新颖的地震学方法来绘制上地幔的小尺度动力学

• 批准号: FT130101220
• 负责人: Hon A/Prof Yingjie Yang
• 金额: $ 51.15万
• 依托单位: Macquarie University
• 依托单位国家: 澳大利亚
• 项目类别: ARC Future Fellowships
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-01-20 至 2019-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/FT130101220
• 关键词: How; Earth; moves; Developing; novel

The concept of small-scale convection currents from about 100-400 km below the Earth’s surface is a model proposed to explain the origins of intraplate volcanoes and mountains. However, direct evidence for the physical reality of small-scale convection cells is generally weak. This project will develop a novel seismological approach combining both ambient noise and earthquake data that can image such small-scale upper mantle convection. The outcomes of this project will help to fill the gap left in the Plate Tectonic paradigm by its inability to explain intraplate geological activity (volcanoes, earthquakes, mountains), which would be a significant step towards unifying conceptual models about how the Earth works.

来自地球表面以下100-400公里的小规模对流的概念是一个用来解释板内火山和山脉起源的模型。然而，关于小尺度对流细胞物理存在的直接证据通常很薄弱。该项目将开发一种新的地震学方法，结合环境噪声和地震数据，可以成像这种小范围的上地幔对流。这个项目的成果将有助于填补板块构造范式中由于无法解释板块内地质活动（火山、地震、山脉）而留下的空白，这将是朝着统一地球如何运作的概念模型迈出的重要一步。