IMAGE and DMSP observations of a density trough inside the plasmasphere
IMAGE and DMSP observations of a density trough inside the plasmasphere
复制标题
等离子层内密度槽的 IMAGE 和 DMSP 观察
DOI：
10.1029/2009ja015104
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发表时间：
2010-07
影响因子：
--
通讯作者：
J. B. Cao
中科院分区：
文献类型：
--
作者：
H.S. Fu;J. Tu;J. B. Cao
我们报告了使用IMAGE卫星上的无线电等离子体成像仪（RPI）和极紫外成像仪（EUV）以及DMSP F-15的测量结果对等离子体中密度槽的协调观测。当IMAGE在磁地方时2130扇区内穿越等离子体层时，用RPI原位观测到了等离子体层内宽度为L = 0.7RE（L = 2.3 ~ L = 3.0）的密度谷。由IMAGE EUV仪器拍摄的等离子体光谱图像证实了密度槽位于等离子体光谱内部。根据RPI主动探测测量结果构建的二维电子密度图像显示，密度谷沿着磁场从IMAGE轨道延伸到至少41°磁纬度。与此同时，DMSP-F15卫星在大约850公里的高度绕地球飞行，在相同的L壳和类似的MLT扇区上同时探测到轻离子密度槽。IMAGE和DMSP-F15卫星的协调观测首次证明，密度槽是一种低密度等离子体层结构，沿着地磁场线从等离子体层延伸到顶部电离层。
We report coordinated observations of a density trough within the plasmasphere using the measurements from the radio plasma imager (RPI) and extreme ultraviolet imager (EUV) on the IMAGE satellite and the measurements from DMSP F‐15. The density trough inside the plasmasphere with a width of ∼0.7 RE in terms of L shell (from L ∼ 2.3 to L ∼ 3.0) was observed in situ by RPI when IMAGE traversed the plasmasphere in ∼2130 magnetic local time (MLT) sector. The plasmasphere images taken by the IMAGE EUV instrument confirm that the density trough is inside the plasmasphere. A 2‐D electron density image constructed from the RPI active sounding measurements reveals that the density trough extends along the magnetic field from the IMAGE orbit to at least 41° magnetic latitude. Meanwhile, the DMSP‐F15 satellite, circling the Earth at about 850 km altitude, detected a light ion density trough at the same time on the same L shells and similar MLT sector. The coordinated observations with the IMAGE and DMSP‐F15 satellite demonstrate, for the first time, that the density trough is a low‐density plasmaspheric structure extending from the plasmasphere to the topside ionosphere along the geomagnetic field lines.
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影响因子：
56.9
作者：
Burch, JL;Mende, SB;Reiff, PH
通讯作者：
Reiff, PH
影响因子：
56.9
作者：
W. Whitney
通讯作者：
W. Whitney
影响因子：
10.3
作者：
D. Carpenter;José Lemaire
通讯作者：
D. Carpenter;José Lemaire
影响因子：
10.3
作者：
B. Sandel;J. Goldstein;D. Gallagher;M. Spasojević
通讯作者：
B. Sandel;J. Goldstein;D. Gallagher;M. Spasojević
影响因子：
5.2
作者：
Robert F. Benson;P. Webb;James L. Green;Leonard N. Garcia;B. Reinisch
通讯作者：
Robert F. Benson;P. Webb;James L. Green;Leonard N. Garcia;B. Reinisch