...
首页> 外文期刊>Earth, planets and space: EPS >Atmospheric drag effects on the KOMPSAT-1 satellite during geomagnetic superstorms
【24h】

Atmospheric drag effects on the KOMPSAT-1 satellite during geomagnetic superstorms

机译:地磁超级风暴期间对KOMPSAT-1卫星的大气阻力效应

获取原文
获取原文并翻译 | 示例
           

摘要

We examine the atmospheric drag on the low earth-orbiting satellite, KOMPSAT-1 in a sun-synchronous orbit at similar to 685-km altitude starting in 1999, during a 3-month (October-December) period in 2003. This 3-month interval includes the October 29-30 and November 20 magnetic superstorms and weak to moderate storms. We observed that the daily KOMPSAT-1 drag acceleration transiently responses to transient storm-time disturbances. That is, there is an one-to-one correspondence between the KOMPSAT-1 drag accelerations and the storm events. We find that the drag acceleration correlates strongly with the level of geomagneric disturbance. This indicates that the trajectory of KOMPSAT-1 is significantly perturbed during extremely disturbed intervals because of atmospheric density increase. The main contributor to the density increase is Joule heating associated with the geomagnetic activity rather than the solar EUV radiation, as reported by previous studies. We suggest that understanding how the upper atmosphere responses to the geomagnetic-associated heating is important to predict space weather impacts on low earth-orbiting satellites.
机译:我们研究了低地球轨道卫星KOMPSAT-1在太阳同步轨道上的大气阻力,该轨道大约与1999年开始的685 km高度相同,在2003年的3个月(10月至12月)期间。这3个一个月的时间间隔包括10月29日至30日和11月20日的磁性超级风暴和弱至中度风暴。我们观察到,每天的KOMPSAT-1阻力加速度对瞬态风暴时间扰动具有瞬态响应。也就是说,KOMPSAT-1阻力加速度与风暴事件之间存在一一对应的关系。我们发现阻力加速度与地磁干扰水平高度相关。这表明由于大气密度的增加,在极度扰动的时间间隔内,KOMPSAT-1的轨迹受到了显着干扰。密度增加的主要原因是与地磁活动有关的焦耳热,而不是先前研究报告的太阳EUV辐射。我们建议,了解高层大气对地磁伴热的响应对于预测太空天气对低地球轨道卫星的影响非常重要。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号