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

北极东部的电离层特征、磁层尖点和边界层过程

基本信息

批准号：
9224679
负责人：
Charles Deehr
金额：
$ 5.78万
依托单位：
University of Alaska Fairbanks Campus
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1993
资助国家：
美国
起止时间：
1993-02-01 至 1994-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9224679&HistoricalAwards=false
关键词：
Ionospheric Signatures og Magnetospheric Cusp

项目摘要

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.

这项建议要求支持斯瓦尔巴极光站的运作，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，那里的天空足够黑暗，可以从11月下旬到1月下旬对白天的椭圆形极光进行光学观测。该站配有电视全天摄像机，5通道子午线扫描光度计，里程表，以及感应和磁通门磁强计。以前的工作建立了白天极光的磁脉动和极光形式的光谱特征和形态。行星际磁场的强度和方向与日侧极光的形式和运动直接相关，这意味着后者是等离子体进入磁层顶的电离层标志。将光学观测与同时测量的地磁脉动相关联，得出了与这种相关性相关的磁层结构模型。这一建议是为了进一步支持所需的光学测量，以测试该模型的关系的白天电离层磁层边界层现象。新的数据将在由J.V. Olson领导的gem资助项目的协调活动中获得。奥尔森的磁力计将识别当前系统，光学仪器将记录极光特征。