NSFGEO-NERC: The history of the Earth's magnetic field strength over the last five million years: Filling in the southern hemisphere gap

NSFGEO-NERC：过去五百万年地球磁场强度的历史：填补南半球的空白

• 批准号: NE/Y005686/1
• 负责人: Greig Paterson
• 金额: $ 18.98万
• 依托单位: University of Liverpool
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FY005686%2F1
• 关键词: NSFGEO; NERC; history; Earth; magnetic

Despite significant progress, fundamental questions regarding the average field strength and its variation through time remain. We are particularly interested in the hypothesis that the magnetic field has a persistent hemispheric asymmetry, an idea supported by long-term (5 Myr) data compilations. We propose here a multi-pronged approach of determining the optimum experimental/analysis strategy combined with new sampling missions (targeting the Southern Hemisphere)in order to fill in gaps in the global database. We will also undertake a new data analysis of existing data sets to obtain the best possible picture of the ancient magnetic field over time.

尽管取得了重大进展，但关于平均场强及其随时间变化的根本问题仍然存在。我们特别感兴趣的是磁场具有持久的半球不对称性的假设，这一观点得到了长期(5Myr)数据汇编的支持。我们在这里提出了一种多管齐下的方法，以确定最佳实验/分析战略，并结合新的抽样任务(针对南半球)，以填补全球数据库的空白。我们还将对现有数据集进行新的数据分析，以获得随时间推移的古代磁场的最佳可能图像。