%0 Journal Article
%T Correlation study of plasmasheet ions with solar wind and geomagnetic conditions<br>等离子体片离子与太阳风及地磁条件的关联研究
%A ZHENG Ling
%A FU Sui-Yan
%A WANG Yong-Fu
%A HE Jian-Sen
%A YANG Biao
%A <br>郑玲
%A 傅绥燕
%A 王永福
%A 何建森
%A 杨彪
%J 地球物理学报
%D 2009
%I 
%X Observations obtained from CIS/CODIF and RAPID instrument onboard Cluster are used to investigate the temporal behavior of H+ and O+ ions in the storm time plasmasheet and the relationship between plasmasheet ions and solar wind conditions. It is found that: (1) The number density of O+ ions (0~40 keV) is quite low before SSC, and increases slowly as Dst decreases, reaching its peak value at the vicinity of Dst minimum. The density of H+ ions enhances greatly shortly before SSC, and decreases sharply after SSC. It keeps at a relatively low level during the whole main phase and recovery phase. Fluxes of energetic H+ and O+ ions enhance greatly after SSC and reach their maximum values before their low energy counterparts. It implies that ions injected into ring current at early storm time are mainly H+ ions and only at later times O+ ions could significantly affect the ring current. (2) During geomagnetic active times, solar wind pressure, density and electric field are positively correlated with simultaneous H+ and O+ number density in the plasma sheet. The dependence of H+ number density on solar wind parameters is stronger under northward IMF (Interplanetary Magnetic Field), while O+ number density favors southward IMF. During geomagnetic quiet times, there is no clear evidence for a correlation between solar wind conditions and ions in the plasmasheet.
%K Plasmasheet ions
%K Storm
%K Solar wind parameter
%K IMF<br>等离子体片离子
%K 磁暴
%K 太阳风参数
%K 行星际磁场
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=741C90AA603A9A406563310EC876DED4&yid=DE12191FBD62783C&vid=286FB2D22CF8D013&iid=59906B3B2830C2C5&sid=1860C81D5DA29ACB&eid=A2937CE34F7AE4F4&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=0&reference_num=27