GEM: A Conjugate Study of ULF Waves at the Cusp

多机构美国全球变化研究项目（我们不断变化的星球，地球科学委员会，1991年）的一个组成部分是理解和模拟地球空间环境。作为对美国全球变化研究计划的一部分，美国国家科学基金会大气科学部建立了一项新的研究计划——地球空间环境建模（GEM），其目标是支持对地球空间动力学和结构特性的基础研究。从而构建具有预测能力的全球地球空间模型。第一个GEM活动的主题是磁层边界、磁层边界之外的磁鞘，以及从磁层边界到电离层的连接。尖端区域是一个丰富的ULF波源，横跨从近直流电到1Hz以上的频谱。这是一项用于研究共轭半球尖头站的超低频波谱的拨款，目的是研究这些地点的尖头的共轭性，并确定与尖头相关的波产生机制。

An integral component of the multi-agency U.S. Global Change Research Program (Our Changing Planet," Committee on Earth Sciences, 1991) is understanding and modeling the geospace environment. As part of its contribution to the U.S. Global Change Research Program, the National Science Foundation's Division of Atmospheric Sciences has established a new research initiative, Geospace Environment Modeling (GEM), with the goal of supporting basic research into the dynamical and structural properties of geospace, leading to the construction of a global geospace model with predictive capability. The subjects of the first GEM campaign are the magnetospheric boundary, the magnetosheath beyond it, and the connection from the boundary through the magnetosphere to the ionosphere. The cusp region is a rich source of ULF waves spanning the frequency spectrum from near dc to above 1Hz. This is a grant to study the ULF wave spectrum at cusp stations in conjugate hemisphere in order to investigate the conjugacy of the cusp at these sites and to identify wave generation mechanisms associated with the cusp.