Investigating the Earth's magnetosphere using multi-spacecraft measurements

使用多航天器测量研究地球磁层

• 批准号: 2881734
• 金额: --
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2881734
• 关键词: Investigating; Earth; magnetosphere; using; multi

The Earth's magnetosphere is a large dynamic structure whose behaviour remains only partially understood despite study over several decades. In the last decade an unprecedented and growing number of space plasma physics research missions has been collecting data in the magnetosphere, including Cluster, THEMIS, VAP, SWARM and MMS, each a multi-spacecraft mission in its own right. Careful planning has gradually brought the orbits of Cluster, MMS and THEMIS in particular into well coordinated alignments, so that the grand constellation has been able to make simultaneous measurements at key locations across the magnetotail in summer seasons, at the bowshock, magnetosheath and magnetopause in winter seasons and along the magnetopause flanks in spring and autumn seasons. Similarly, in all seasons these many spacecraft have regularly collected data throughout the inner magnetosphere.These newly collected data have as yet received limited attention, but the science operations that produced the data were designed to allow investigations of diverse unresolved or only partially resolved questions such as the nature of the process by which the cold, dense plasmasheet is formed, the nature and origin of north/south asymmetries on the magnetotail and of the cusps, the distribution and scale of reconnection sites through the magnetotail plasmasheet and across the magnetopause, the sequence of events in the magnetotail corresponding to auroral substorms, the fate of plasma populations injected into the inner magnetosphere during substorms and their possible contribution to radiation belt population enhancement and loss, and the physical processes at work in the auroral acceleration regions. The supervisor team has prior experience in all these areas.The aim of the project will be to explore the datasets produced in the planned observations seasons associated with one or more of these science goals, and to identify and analyse data from particularly interesting multi-mission, multi-spacecraft conjunctions, in order to shed new light on these long-standing questions. Magnetotail or magnetopause projects would likely be the most productive areas for initial study.

地球的磁层是一种大型的动态结构，尽管几十年来研究，但其行为仍被部分理解。在过去的十年中，空间等离子物理研究任务的空间越来越多，已经在磁层中收集数据，包括集群，Themis，VAP，Swarm和MMS，每个人本身都是多间谍的任务。 Careful planning has gradually brought the orbits of Cluster, MMS and THEMIS in particular into well coordinated alignments, so that the grand constellation has been able to make simultaneous measurements at key locations across the magnetotail in summer seasons, at the bowshock, magnetosheath and magnetopause in winter seasons and along the magnetopause flanks in spring and autumn seasons.同样，在所有季节中，这些许多航天器在整个磁层内都定期收集数据。这些新近收集的数据尚未受到有限的关注，但是产生数据的科学操作旨在允许对多样化或仅部分解决的问题进行调查，例如，北方的北方和诺斯特（Southers）的众多，诺斯特（Souther）的性质，以及诺斯特（Souther）的众多，诺斯特（Southers）的性质，是诺斯特（Souther）的诺斯特（North），诺斯特（North）的诺斯特（North），诺斯特（North）的诺斯特（North）和诺斯特（Southers）的诺斯特（North）又是诺斯（North）的诺斯特（North）。 cusps, the distribution and scale of reconnection sites through the magnetotail plasmasheet and across the magnetopause, the sequence of events in the magnetotail corresponding to auroral substorms, the fate of plasma populations injected into the inner magnetosphere during substorms and their possible contribution to radiation belt population enhancement and loss, and the physical processes at work in the auroral acceleration regions.主管团队在所有这些领域都有先前的经验。该项目的目的是探索与一个或多个这些科学目标相关的计划观测季节中产生的数据集，并确定和分析来自特别有趣的多误解，多空施 - 飞机场连接的数据，以便在这些长期存在的问题上发明新的意见。磁尾或磁笼项目可能是初步研究的生产力最高的领域。