The magnetopause at high time resolution: Structure and lower‐hybrid waves
The magnetopause at high time resolution: Structure and lower‐hybrid waves
复制标题
高时间分辨率下的磁层顶：结构和低混合波
DOI：
10.1029/2000gl012097
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发表时间：
2001
影响因子：
5.2
通讯作者：
G. Haerendel
中科院分区：
文献类型：
--
作者：
E. Lucek;P. Cargill;M. Dunlop;L. Kistler;A. Balogh;Wolfgang Baumjohann;K. Fornacon;E. Georgescu;G. Haerendel
赤道-S在0600-1040LT之间进行了多次磁层顶跨越，在或128个矢量/S处采集了磁场数据。这使得可以研究最短跨越范围内的结构，并给出了在|B|中具有异常平坦坡度的例子。这些道口在千米以下的尺度上没有显示出明显的结构。斜坡内没有发生强烈的电磁波活动，尽管一些交叉点在靠近磁层的部分磁场斜坡上有极低幅度的纵波，频率接近较低的混合频率。这些初步结果表明，亚千米尺度上的物理过程对决定当前层的结构没有作用。
Equator‐S made many magnetopause crossings between 06 00 and 10 40 LT, taking magnetic field data at 64 or 128 vectors/s. This allows structure within the shortest crossings to be examined, and examples having an exceptionally smooth ramp in |B| are presented. These crossings show no significant structure at sub‐kilometre scales. Strong electromagnetic wave activity did not occur within the ramp, although some crossings have extremely low amplitude compressional waves in part of the field ramp close to the magnetosphere, with frequencies close to the lower hybrid frequency. These initial results suggest that physical processes on sub‐km scales play no role in determining the structure of the current layer.