Horizontal structure of sporadic E layer observed with a rocket‐borne magnesium ion imager
Horizontal structure of sporadic E layer observed with a rocket‐borne magnesium ion imager
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DOI：
10.1029/2009ja014926
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发表时间：
2010-12
影响因子：
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通讯作者：
J. Kurihara;Y. Koizumi-Kurihara;N. Iwagami;Tsuneaki Suzuki;A. Kumamoto;T. Ono;M. Nakamura;M. Ishii;A. Matsuoka;K. Ishisaka;T. Abe;S. Nozawa
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文献类型：
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作者：
J. Kurihara;Y. Koizumi-Kurihara;N. Iwagami;Tsuneaki Suzuki;A. Kumamoto;T. Ono;M. Nakamura;M. Ishii;A. Matsuoka;K. Ishisaka;T. Abe;S. Nozawa
[1]为了研究中纬度零星E（Es）层的空间结构，利用日本鹿儿岛内之浦航天中心发射的镁离子成像仪（MII），在黄昏曙暮光中观测了Es层中镁离子（Mg+）的紫外共振散射。机载阻抗探针测量的原位电子密度显示，在飞行上升和下降期间，Es层位于100公里的高度。与山川站的地面电离层探测仪同时进行的观测发现了Es层水平“片状”结构的特征。MII成功地扫描了Es层中的水平Mg+密度扰动，发现它们具有片状和锋面结构。所观察到的锋面结构的水平尺度和排列与所提出的理论基本一致。据我们所知，这是第一次观察到的二维水平结构的Mg+在一个Es层。
[1] To study the spatial structure of midlatitude sporadic E (Es) layers, the ultraviolet resonant scattering by magnesium ions (Mg+) in an Es layer was observed during the evening twilight with the Magnesium Ion Imager (MII) on the sounding rocket launched from the Uchinoura Space Center in Kagoshima, Japan. The in situ electron density measured by an onboard impedance probe showed that the Es layer was located at an altitude of 100 km during both the ascent and descent of the flight. Simultaneous observation with a ground-based ionosonde at Yamagawa identified the signature of horizontally “patchy” structures in the Es layer. The MII successfully scanned the horizontal Mg+ density perturbations in the Es layer and found that they had patchy and frontal structures. The horizontal scale and alignment of the observed frontal structure is generally consistent with a proposed theory. To our knowledge, this is the first observation of the two-dimensional horizontal structure of Mg+ in an Es layer.