根据全球GPS网资料推断1998年9月23日和1999年7月29日太阳耀斑的电离层效应
Ionospheric effects of the solar flares of September 23, 1998 and July 29, 1999 as deduced from global GPS network data
摘要：
本文介绍了1998年9月23日和1999年7月29日全球电离层对太阳耀斑响应的首次GPS测量数据。该分析使用了由作者之一（E. J. M. E。L.）。该方法的实质是，对电离层总电子含量的变化进行适当的滤波和相干处理，电离层总电子含量是根据全球定位系统数据确定的，同时对分析中使用的所有台站的整套可见（在给定的时间间隔内）全球定位系统卫星进行处理。结果发现，TEC的波动，通过去除TEC的线性趋势与约5分钟的时间窗口，是相干的所有站和波束的GPS卫星在地球的阳面。TEC响应的时间分布类似于耀斑期间硬X射线发射变化的时间行为，在能量范围为25-35 keV，如果在电离层中的电子密度扰动的弛豫时间为50-100 s的顺序被引入。在地球的夜面还没有发现这样的影响。
英文摘要：
This paper presents data from first GPS measurements of global response of the ionosphere to solar flares of September 23, 1998 and July 29, 1999. The analysis used novel technology of a global detection of ionospheric effects from solar flares (GLOBDET) as developed by one of the authors (Afraimovich E. L.). The essence of the method is that use is made of appropriate filtering and a coherent processing of variations in total electron content (TEC) in the ionosphere which is determined from GPS data, simultaneously for the entire set of visible (over a given time interval) GPS satellites at all stations used in the analysis. It was found that fluctuations of TEC, obtained by removing the linear trend of TEC with a time window of about 5 min, are coherent for all stations and beams to the GPS satellites on the dayside of the Earth. The time profile of TEC responses is similar to the time behavior of hard X-ray emission variations during flares in the energy range 25-35 keV if the relaxation time of electron density disturbances in the ionosphere of order 50-100 s is introduced. No such effect on the nightside of the Earth has been detected yet.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
