Collaborative Research: Studies of Solar Wind -- Magnetosphere Interactions using Observations of ULF Waves at Manned Stations as Part of an Extensive Ground Array

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该提案寻求资金，以：(a)继续进行正在进行的研究，将Pc 1-2波的地面观测与Cluster和THEMIS航天器观测到的波和离子进行比较，这两种波和离子都是在白天的封闭场线（特别是与地磁风暴有关，以表征它们在耗尽环电流和辐射带电子方面的作用）和在叶/地幔区域，以调查它们是否可以用于监测磁鞘等离子体向尾部的传输；(b)将在尖端和极帽纬度的pc3 -4波的地面观测数据与Cluster和THEMIS的数据进行比较，以研究它们从上游源进入并穿过日侧磁层和极帽的传播；(c)继续最近对Pi 1B脉动和亚暴的卫星-地面研究，特别是通过将多站地面数据与FAST、Cluster和THEMIS航天器的数据进行比较，并通过定量分析多站数据来测试推断源位置的方法，并通过使用地面和卫星Pi 1B数据来探测亚暴发生位置和电离层特征之间的物理联系。预计该项目将继续在包括太阳风在内的各种地球空间现象的研究中发挥重要作用。磁层相互作用与地磁暴和亚磁暴。与此项目相关的分析工作非常适合研究生和本科生的参与和研究训练。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The proposal seeks funding to: (a) continue ongoing studies that compare ground observations of Pc 1-2 waves with waves and ions observed by Cluster and THEMIS spacecrafts, both on dayside closed field lines (especially in relation to geomagnetic storms, to characterize their role in depleting the ring current and radiation belt electrons) and in the lobe/mantle region, to investigate whether they can be used to monitor the transport of magnetosheath plasma toward the tail; (b) compare ground-based observations of Pc 3-4 waves at cusp and polar cap latitudes with data from Cluster and THEMIS to investigate their propagation from their upstream source into and through the dayside magnetosphere and polar cap; and (c) continue recent satellite-ground studies of Pi 1B pulsations and substorms, in particular by comparing multi-station ground data with data from FAST, Cluster, and THEMIS spacecrafts, and by quantitatively analyzing multi-station data to test methods for inferring source locations, and by using combined ground and satellite Pi 1B data to probe the physical link between the onset location and the ionospheric signature of substorms. It is expected that the project will continue to play a significant role in a variety of studies of geospace phenomena including the solar wind?magnetosphere interaction and geomagnetic storms and substorms. The analysis effort associated with this project is highly suitable for involvement and research training of both graduate and undergraduate students.