Ionospheric Signatures og Magnetospheric Cusp and Boundary Layer Processes in the Eastern Arctic

这项提议要求支助斯瓦尔巴特极光站的运作，以便在1992年12月和1993年1月对白天的极光进行光学测量。这个地点位于北极东部，那里的天空足够暗，可以从11月下旬到1月下旬对日侧极光椭圆形进行光学观测。空间站配备了电视全天摄像机、5通道子午线扫描光度计、里程计以及感应式和磁通门磁力计。以前的工作确定了日侧极光中磁脉动和极光形式的特殊特征和形态。行星际磁场的强度和方向与白天极光的形状和运动直接相关，这意味着后者是磁层顶等离子体进入的电离层特征。光学观测与地磁脉动的同时测量相关联，产生了与这种关联相关的磁层结构模型。这项提议是为了进一步支持检验日侧电离层与磁层边界层现象之间关系的这一模型所需的光学测量。将通过与J.V.Olson领导的GEM资助项目的协调行动获得新的数据。奥尔森的磁力计将识别当前的系统，光学仪器将记录极光特征。

This proposal requests support for the operation of the Svalbard Auroral Station to make optical measurements of the dayside aurora in December 1992 and January 1993. This site lies in the Eastern Arctic where the sky is dark enough to allow optical observations of the dayside auroral oval from late November to late January. The station is instrumented with a TV all-sky camera, a 5 channel meridian scanning photometer, a riometer, and also induction and fluxgate magnetometers. Previous work established the spectural character and morphology of both the magnetic pulsations and the auroral forms in the dayside aurora. That the strength and direction of the interplanetary magnetic field is directly related to the form and motion of the dayside aurora implying that the latter is an ionospheric signature of plasma entry at the magnetopause. Correlation of the optical observations with simultaneous measurements of geomagnetic pulsations has resulted in a model of the magnetospheric structure associated with this correlation. This proposal is to support further the optical measurements required to test this model of the relationship of the dayside ionosphere to magnetospheric boundary layer phenomena. New data will be obtained in a coordinated campaign with the GEM-funded project led by J.V. Olson. Olson's magnetometers will identify current systems and the optical instruments will record the auroral features.