Excitation of large-scale gravity waves in the thermosphere by interplanetary fluctuations

摘要：

Fluctuations on timescales of minutes to hours are common in the solar wind.When the fluctuations encounter the Earth,they could lead to sporadic energy and momentum deposition at high latitudes,which,in turn,excite gravity waves in the auroral regions.These gravity waves,particularly large-scale ( ＞～1000 km) gravity waves,will give rise to traveling atmospheric disturbances with typical amplitudes of 20～40％ in the upper thermosphere.We report here the detection of multiple excitation of large-scale gravity waves by Alfvén waves,interplanetary coronal mass ejections (ICMEs),and stream interaction regions (SIRs).

作者: 郭健鹏 冯学尚

作者单位: 中国科学院国家空间科学中心 北京 100190

会议类型: 国内会议

会议名称: 2015年中国地球科学联合学术年会

会议地点: 北京

会议语种:英文

页码: 2720-2720

在线出版日期: 2015-10-11（万方平台首次上网日期，不代表论文的发表时间）