文章基本信息

标题：Movie-maps of low-latitude magnetic storm disturbance
本地全文：下载
作者：Jeffrey J. Love ; Jennifer L. Gannon
期刊名称：Space Weather
印刷版ISSN：1542-7390
出版年度：2010
卷号：8
期号：6
页码：1-21
DOI：10.1029/2009SW000518
语种：English
出版社：American Geophysical Union
摘要：We present 29 movie-maps of low-latitude horizontal-intensity magnetic disturbance for the years 1999–2006: 28 recording magnetic storms and 1 magnetically quiescent period. The movie-maps are derived from magnetic vector time series data collected at up to 25 ground-based observatories. Using a technique similar to that used in the calculation of Dst, a quiet time baseline is subtracted from the time series from each observatory. The remaining disturbance time series are shown in a polar coordinate system that accommodates both Earth rotation and the universal time dependence of magnetospheric disturbance. Each magnetic storm recorded in the movie-maps is different. While some standard interpretations about the storm time equatorial ring current appear to apply to certain moments and certain phases of some storms, the movie-maps also show substantial variety in the local time distribution of low-latitude magnetic disturbance, especially during storm commencements and storm main phases. All movie-maps are available at the U.S. Geological Survey Geomagnetism Program Web site (http://geomag.usgs.gov).