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

合作研究：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: 2245629
• 负责人: Courtney Sprain
• 金额: $ 12.77万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-07-15 至 2025-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2245629&HistoricalAwards=false
• 关键词: Collaborative; Research; NSFGEO; NERC; history

Earth's magnetic field, generated in the Earth’s core, plays a vital role in our daily lives. It not only guides compass needles, but it also acts as a protective shield, deflecting harmful solar and cosmic particles. However, fundamental questions about the history and variation of this magnetic field remain unanswered. One intriguing hypothesis is the presence of a persistent hemispheric asymmetry, supported by long-term data compilations spanning five million years. To delve into these mysteries, this project will undertake a comprehensive research project, employing innovative experimental and analytical strategies while focusing on the Southern Hemisphere to address significant gaps in reliable data. This endeavor aims to provide a clearer picture of the ancient magnetic field and its evolution over time. Apart from unraveling the Earth's magnetic history, this project has broader significance for both science and society. Understanding the behavior of the magnetic field holds great potential for advancing various fields of study, such as geophysics, climate science, and space weather forecasting. By meticulously collecting and analyzing new samples from Southern Hemisphere locations, combined with a comprehensive reanalysis of existing datasets, the research team aims to refine our knowledge of the magnetic field's strength over the last five million years. These efforts will enhance our ability to interpret paleomagnetic records and improve the accuracy of models used in diverse scientific disciplines. Furthermore, this project is committed to fostering education, diversity, and knowledge dissemination. It actively supports participation of underrepresented groups and promotes the work of an early career female scientist. Extensive educational resources, including teaching curricula and open-source software packages, will be further developed, allowing Earth Science majors to learn about paleomagnetism and Python programming. The team is also deeply engaged in the development of the MagIC database, facilitating open access to valuable paleomagnetic data and encouraging collaboration within the scientific community. By adhering to the principles of Findable, Accessible, Interoperable and Reusable (FAIR) data and Open Code, the project ensures that all data generated, and the code used to interpret the data, will be readily accessible, enabling further research and discoveries. This is a collaborative proposal between scientists at the University of California San Diego, University of Florida, and Liverpool University, and is therefore co-funded by the National Science Foundation (NSF) and the United Kingdom’s Natural Environment Research Council (NERC).This research project aims to address the fundamental questions surrounding the Earth's magnetic field. Specifically, it focuses on understanding the presence of a persistent hemispheric asymmetry, which has been supported by long-term data compilations covering a span of five million years. The project proposes a multi-pronged approach, encompassing experimental, analytical, and sampling missions targeting the Southern Hemisphere. The research team will employ an optimized experimental and analysis strategy, combined with new sampling missions, to address gaps in the global paleomagnetic database. By collecting samples from Southern Hemisphere locations, they aim to enhance the representation of this region in the database and improve the understanding of the magnetic field's behavior. Additionally, the team will conduct a meticulous analysis of existing datasets to obtain a more accurate depiction of the ancient magnetic field over time. To ensure the reliability of the obtained estimates of ancient field strength, the project incorporates rigorous data analysis and robust experimental protocols. Furthermore, the researchers will provide precise dates for successful paleomagnetic intensity estimates, contributing to the overall quality and accuracy of the data.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

地球磁场在地球核心中产生，在我们的日常生活中起着至关重要的作用。它不仅指导指南针，而且还充当保护性盾牌，表现出有害的太阳能和宇宙颗粒。但是，有关该磁场的历史和变化的基本问题仍未得到解答。一个有趣的假设是存在持续的半球不对称性，并得到了跨越五百万年的长期数据汇编的支持。为了深入研究这些谜团，该项目将采用创新的实验和分析策略进行全面的研究项目，同时着眼于南半球，以解决可靠数据中的显着差距。这项工作旨在更清晰地了解古代磁场及其演变。除了揭开地球的磁历史外，该项目对科学和社会都具有更大的意义。了解磁场的行为具有推进各种研究领域的巨大潜力，例如地球物理，气候科学和太空天气预报。通过精心收集和分析南半球地点的新样本，再加上对现有数据集的全面重新分析，研究小组旨在完善我们对过去500万年中磁场力量的了解。这些努力将增强我们解释古磁记录并提高多样性学科中使用的模型的准确性的能力。此外，该项目致力于促进教育，多样性和知识传播。它积极支持代表性不足的群体的参与，并促进了早期职业女科学家的工作。将进一步开发广泛的教育资源，包括教学课程和开源软件软件包，使地球科学专业能够了解古磁性和Python编程。该团队还深入参与了魔术数据库的开发，支持对宝贵的古磁数据的开放访问，并鼓励科学界的合作。通过遵守可发现的，可访问，可互操作和可重复使用的（公平）数据和开放代码的原则，该项目可确保所有生成的数据以及用于解释数据的代码，可以易于访问，从而实现进一步的研究和发现。加州大学圣地亚哥分校，佛罗里达大学和利物浦大学的科学家之间的提议，因此由国家科学基金会（NSF）与英国自然环境研究委员会（NERC）共同资助。这项研究项目旨在解决围绕地球磁场的基本问题。具体而言，它重点是了解持续的半球不对称的存在，这已得到涵盖五百万年的长期数据汇编的支持。该项目提出了一种多管齐下的方法，包括针对南半球的实验，分析和采样任务。研究团队将采用优化的实验和分析策略，再加上新的抽样任务，以解决全球古磁数据库中的差距。通过从南半球的位置收集样品，它们的目的是增强该区域在数据库中的表示并提高对磁场行为的理解。此外，该团队将对现有数据集进行细致的分析，以获取对古老磁场随着时间的更准确描述。为了确保获得的古代田间强度的估计值的可靠性，该项目结合了严格的数据分析和强大的实验协议。此外，研究人员将为成功的古磁强度估算提供精确的日期，这有助于数据的总体质量和准确性。该奖项反映了NSF的法定任务，并被认为是通过基金会的智力优点和更广泛的影响审查标准来通过评估来获得的支持。