Views of Earth's magnetosphere with the IMAGE satellite
Views of Earth's magnetosphere with the IMAGE satellite
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DOI：
10.1126/science.291.5504.619
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发表时间：
2001-01-26
期刊：
影响因子：
56.9
通讯作者：
Reiff, PH
中科院分区：
文献类型：
--
作者：
Burch, JL;Mende, SB;Reiff, PH
图像航天器使用光子和中性原子成像和无线电探测技术来提供地球内部磁层和高层大气的全球图像。紫外线极光成像显示，质子极光相对于电子极光向赤道方向移动，在较高纬度形成的离散极光几乎完全由电子引起。对磁层扰动期间注入内磁层的离子进行的高能中性原子成像显示，离子在几万电子伏能量范围内产生了强烈的能量漂移，导致了环电流的形成。对等离子体层的紫外线成像揭示了两个意想不到的特征--午夜前的低谷区域和日侧肩部区域--并证实了30年来的等离子体尾巴形成理论，该理论从黄昏一侧的等离子体层延伸到磁层顶。
The IMAGE spacecraft uses photon and neutral atom imaging and radio sounding techniques to provide global images of Earth's inner magnetosphere and upper atmosphere. Auroral imaging at ultraviolet wavelengths shows that the proton aurora is displaced equatorward with respect to the electron aurora and that discrete auroral forms at higher Latitudes are caused almost completely by electrons. Energetic neutral atom imaging of ions injected into the inner magnetosphere during magnetospheric disturbances shows a strong energy-dependent drift that Leads to the formation of the ring current by ions in the several tens of kiloelectron volts energy range. Ultraviolet imaging of the plasmasphere has revealed two unexpected features-a premidnight trough region and a dayside shoulder region-and has confirmed the 30-year-old theory of the formation of a plasma tail extending from the duskside plasmasphere toward the magnetopause.