Understanding nonlinear wave-particle interactions in Earth's radiation belts for space weather modelling (Ref: 4253)

了解地球辐射带中的非线性波粒相互作用以进行空间天气建模（参考文献：4253）

• 批准号: 2697077
• 金额: --
• 依托单位: UNIVERSITY OF EXETER
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2697077
• 关键词: Understanding; nonlinear; wave; particle; interactions

Lead Supervisor: Dr Oliver Allanson, University of ExeterCo-Supervisor: Dr Nigel Meredith, British Antarctic Survey, Space Weather & Atmosphere Team2nd Supervisor: Prof Andrew Hillier, University of ExeterProject Enquiries: [e-mail] Earth's Outer Radiation Belt is a region of near-Earth space containing high-energy charged particles that are trapped by the geomagnetic field. Whilst we know that the radiation belt environment is ultimately driven by the solar wind, it is very challenging to model these particle populations. The myriad socio-economic risks posed by space weather effects are reflected through its inclusion in the UK Cabinet Office National Risk Register for Civil Emergencies. Accurate modelling and prediction is essential for safeguarding the operational satellites in orbit that underpin modern society - placing a growing reliance on forecasts such as those based on the world-leading model developed at the British Antarctic Survey. This model is now being incorporated into the UK MET Office Space Weather Forecasting Suite - one of 3 space weather prediction centres worldwide. Existing radiation belt modelling and forecasting capabilities rely upon techniques that treat electromagnetic waves determining the electron dynamics as having very small amplitudes. However, recent satellite datasets have demonstrated the prevalence of large amplitude (aka 'nonlinear') electromagnetic waves. Understanding the impact of nonlinear waves on space weather modelling is one of the biggest international challenges in radiation belt science today. In addition to regular one-to-one meetings with supervisors, the student will be encouraged to participate in wider group- and network- activities to build up their academic profile and collaborate with colleagues. They can attend seminars from national and international experts in the field, and benefit from national and international conferences and summer schools that develop both discipline-specific and transferable skills (e.g. AGU Fall meeting and International School/Symposium for Space Simulations). The GW4+ DTP provides many further training and skills development opportunities, https://www.nercgw4plus.ac.uk/. In this PhD the student will work towards making internationally significant discoveries about the importance of nonlinear waves in radiation belt and space weather modelling - to ultimately improve forecasting. Once they become comfortable with the underlying science and general direction, they will be invited to help guide the project towards a particular aspect that most interests you. This could be using one or more of theoretical, numerical or observational approaches - depending on your inclinations and the questions that we identify together. They will have the opportunity to lead on a project that will make an important contribution to an internationally significant scientific problem with real-world application. They will work and collaborate within a strong UK-based network of world-leading experts in Space Weather and Space-science. The ultimate aim of this PhD is to support the student to become an independent researcher, and a valued colleague in whatever future role they choose.

首席主管：Exeterco-Supervisor大学Oliver Allanson博士：奈杰尔·梅雷迪思（Nigel Meredith）博士，英国南极调查，太空天气和氛围Team2nd Processor：exeterwhillier教授，exeterproject University Project询问：O.Allanson@exethe extthe Exthe Exthe Exthe Eartheasthe Earthease the Earthease the Earthe the Earthe the Eartheasthe Earther the Earther the Earther Radiviation Beltiativiation Beltiativiation Beltiative Belt。是一个近地空间的区域，该区域包含被地磁场捕获的高能电荷颗粒的区域。尽管我们知道辐射带环境最终是由太阳风驱动的，但对这些粒子种群进行建模非常具有挑战性。太空天气效应带来的无数社会经济风险通过将其包含在英国内阁办公室国家风险登记册中的民用紧急情况登记册中反映出来。准确的建模和预测对于维护支撑现代社会的轨道上的操作卫星至关重要 - 越来越依赖于基于英国南极调查中开发的世界领先模型的预测，例如预测。现在，该模型已被纳入英国的大都会办公室太空天气预报套件 - 全球3个太空天气预测中心之一。现有的辐射带模型和预测能力取决于处理电磁波确定电子动力学的技术。但是，最近的卫星数据集证明了大幅度（又称“非线性”）电磁波的流行。了解非线性波对太空天气建模的影响是当今辐射带科学中最大的国际挑战之一。除了与主管的定期一对一的会议外，还将鼓励学生参加更广泛的小组和网络活动，以建立他们的学术知名度并与同事合作。他们可以参加该领域的国家和国际专家的研讨会，并受益于国际和国际会议和暑期学校，这些会议既开发纪律特定和可转移的技能（例如，AGU秋季会议和国际学校/太空模拟国际学校/研讨会）。 GW4+ DTP提供了许多进一步的培训和技能开发机会，https://www.nercgw4plus.ac.uk/。在该博士学位上，学生将致力于对非线性波在辐射带和太空天气建模中的重要性进行国际重要的发现 - 最终改善预测。一旦他们对基础科学和一般方向感到满意，他们将被邀请帮助该项目迈向最感兴趣的特定方面。这可以使用一种或多种理论，数值或观察方法 - 取决于您的倾向和我们一起识别的问题。他们将有机会领导一个项目，该项目将为实际应用而对国际上重大的科学问题做出重要贡献。他们将在英国在太空天气和太空科学方面的世界领先专家网络中工作并合作。该博士学位的最终目的是支持学生成为一名独立的研究人员，并在他们选择的任何职位上成为一位有价值的同事。