| 太阳活动低年时太阳同步轨道电场高频(HF)波的观测特性研究 |
| |
| 引用本文： | 马玉端,路立,杨俊英,曹晋滨,张学民,陈化然,周国成.太阳活动低年时太阳同步轨道电场高频(HF)波的观测特性研究[J].地球物理学报,2011,54(6):1421-1432. |
| |
| 作者姓名： | 马玉端 路立 杨俊英 曹晋滨 张学民 陈化然 周国成 |
| |
| 作者单位： | 1. 北京航空航天大学宇航学院,北京 100191;
2. 空间天气学国家重点实验室(中国科学院空间科学与应用研究中心), 北京 100190;
3. 中国地震局地震预测研究所, 北京 100036;
4. 中国地震局地球物理研究所, 北京 100081 |
| |
| 基金项目： | 国家自然科学基金，国家科技支撑计划，973项目 |
| |
| 摘 要： | 文章使用搭载在DEMETER卫星上的电场探测仪器(Instrument Champ Electrique,ICE)在太阳活动低年(2007年2月4日到2008年2月3日)所探测的数据,研究频率从10 kHz到3.33 MHz宽频段的高频(HF)电场波功率谱的空间分布特征.地磁宁静期间,从2.08 MHz到3.33 MH...
|
| 关 键 词： | 电场HF波 功率谱密度 电离层地震响应 地磁异常 地磁活动 |
| 收稿时间： | 2011-03-25 |
Features of the electric field HF wave of the Sun-synchronous orbit in the solar minimum year |
| |
| MA Yu-Duan,LU Li,YANG Jun-Ying,CAO Jin-Bin,ZHANG Xue-Min,CHEN Hua-Ran,ZHOU Guo-Cheng.Features of the electric field HF wave of the Sun-synchronous orbit in the solar minimum year[J].Chinese Journal of Geophysics,2011,54(6):1421-1432. |
| |
| Authors: | MA Yu-Duan LU Li YANG Jun-Ying CAO Jin-Bin ZHANG Xue-Min CHEN Hua-Ran ZHOU Guo-Cheng |
| |
| Institution: | 1. School of Astronautics, Beihang University, Beijing 100191, China;
2. State Key Laboratory of Space Weather (Center for Space Science and Applied Research, Chinese Academy of Sciences), Beijing 100190, China;
3. Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China;
4. Institute of Geophysics, China Earthquake Administration, Beijing 100081, China |
| |
| Abstract: | Using the electric field High Frequency (HF) waves recorded by the Instrument Champ Electrique (ICE) onboard the DEMETER spacecraft, the spatial features of the waves from 10 kHz to 3.33 MHz are studied. During the quiet time, the higher the HF wave, the bigger the power spectrum intensity when the frequency lies between 2.08 MHz and 3.33 MHz. At the same time, the power spectrum intensity is almost uniform in different longitudes and latitudes. The difference of the power spectrum intensity between different longitudes and latitudes in the dayside is less than that of the nightside. The seasonal changes of the HF power spectrum intensity mainly show that there are peaks at the dayside low latitudes in the frequency bands of 1.25 MHz and 1.66 MHz. During the quiet time, the discrepancy of the power spectrum intensity between different longitudes and latitudes obviously occurs at the frequency bands of 0.42 MHz and 1.66 MHz especially at high latitudes of the northern hemisphere in the dayside. During the geomagnetic activity, the HF response mainly appears at the low frequency band especially in the high latitude area. At the equator and low latitudes (latitude is between ±40°), the geomagnetic response of the HF is weak while that of the nightside in the magnetotail direction becomes strong especially during the storms. Both in the northern and southern high latitudes during the storms on the nightside, the biggest power spectrum intensity is ten times as large as those of the quiet. The biggest power spectrum intensity on the dayside of the high latitude of the southern hemisphere during the substorm and the period of the high latitude magnetic perturbation is ten times as large as that of the quiet. Considering that the perturbation coming from the space has an effect on the high latitude area during the substorm and the period of the high latitude magnetic perturbation, the enhancement of the HF power spectrum intensity may originate from the spatial process. In view of that the data used in this paper occur in the solar minimum year and most of the storms are very weak with the strongest storm belonging to the moderate storm, the enhancements of the HF power spectrum intensity during the strong, severe even the great storms may be more obvious. If there is anomalous accretion in local area during quiet time especially when there is no storm, the abnormal phenomena will be the ionospheric seismo-response mainly brought by the factors of the internal earth. |
| |
| Keywords: | Electric field HF wave Power intensity spectrum Ionospheric seismo-response Geomagnetic anomaly Geomagnetic active |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《地球物理学报》浏览原始摘要信息 |
| 点击此处可从《地球物理学报》下载免费的PDF全文 |
|
