Unlocking Earth’s inner secrets in deep time using palaeointensities

利用古强度解开地球深处的内部秘密

• 批准号: DP210102495
• 负责人: Prof Zheng-Xiang Li
• 金额: $ 36.94万
• 依托单位: Curtin University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2021
• 资助国家: 澳大利亚
• 起止时间: 2021-12-01 至 2024-11-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP210102495
• 关键词: Unlocking; Earth; inner; secrets; deep

The geomagnetic field, generated in Earth's liquid outer core, provides Earth's biosphere and atmosphere with a critical protective shield from the bombardment of the solar wind. However, we still know little about the evolution of the geomagnetic field or the deep-time secrets it keeps. This project aims to study the varying intensity of the geomagnetic field during Earth’s middle life. The results will help decipher how the Earth’s core responded to evolving tectonic and dynamic systems, including the supercontinent cycles, and when Earth’s solid inner core initiated. Such knowledge will help us to better understand how the Earth System evolved as a whole, and how such an evolution has led to the present day life and environment on Earth.

地磁场产生于地球的液态外核，为地球的生物圈和大气层提供了一个重要的保护屏障，使其免受太阳风的轰击。然而，我们仍然对地磁场的演化或它所保存的深时秘密知之甚少。该项目旨在研究地球中年期间地磁场强度的变化。这些结果将有助于破译地球核心如何应对不断演变的构造和动力系统，包括超大陆周期，以及地球固体内核何时开始。这些知识将帮助我们更好地了解地球系统是如何作为一个整体进化的，以及这种进化是如何导致今天地球上的生命和环境的。