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：ExeterUniversity Oliver Allanson博士联合主管：Nigel Meredith博士，英国南极调查、空间天气和大气小组第二主管：ExeterUniversity项目调查：[e-mail]地球外辐射带是近地空间的一个区域，包含被地磁场捕获的高能带电粒子。虽然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是非常具有挑战性的。空间气象影响所带来的各种社会经济风险通过将其列入英国内阁办公室民事紧急情况国家风险登记册而得到反映。准确的建模和预测对于保障在轨运行的卫星至关重要，这些卫星是现代社会的支柱--越来越依赖预测，例如基于英国南极调查局开发的世界领先模型的预测。该模型现在正被纳入英国气象局空间天气预报套件--全球3个空间天气预报中心之一。现有的辐射带模拟和预测能力依赖于将确定电子动力学的电磁波视为具有非常小幅度的技术。然而，最近的卫星数据集证明了大幅度(又称“非线性”)电磁波的普遍存在。了解非线性波对空间天气模拟的影响是当今辐射带科学中最大的国际挑战之一。除了定期与主管一对一会面外，还将鼓励学生参加更广泛的小组活动和网络活动，以建立他们的学术形象并与同事合作。他们可以参加该领域国家和国际专家的研讨会，并受益于发展特定学科和可转让技能的国家和国际会议和暑期学校(例如，AGU秋季会议和国际空间模拟学校/专题讨论会)。GW4+DTP提供了许多进一步的培训和技能发展机会，https://www.nercgw4plus.ac.uk/.在这个博士学位中，学生将致力于在辐射带和空间天气模拟中对非线性波的重要性做出具有国际意义的发现--最终改善预报。一旦他们对基础科学和总体方向感到满意，他们将被邀请帮助指导项目朝着您最感兴趣的特定方面发展。这可能是使用一种或多种理论、数值或观察方法--取决于你的倾向和我们共同确定的问题。他们将有机会领导一个项目，该项目将对具有现实世界应用的国际重大科学问题做出重要贡献。他们将在一个由世界领先的空间气象和空间科学专家组成的强大的英国网络中开展工作和合作。这一博士学位的最终目标是支持学生成为一名独立的研究人员，并在他们未来选择的任何角色中成为有价值的同事。