E Region - E Region

Japanese: E 領域 - いーりょういき
E Region - E Region

...The D region is strongly affected by abnormal ionization caused by flares (the Dellinger phenomenon) and by abnormal ionization caused by solar cosmic rays and auroral particles (ionospheric storms). The E region is located at an altitude of about 90 to 130 km, and the main sources of ionization are solar X-rays (100 to 10 Å) and ultraviolet rays (1027 to 800 Å). The E layer, which has a peak in electron density at an altitude of about 100 km, is formed in the sunlit hemisphere.

*Some of the terminology that refers to the "E region" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…D領域はフレアにともなう異常電離(デリンジャー現象)および太陽宇宙線やオーロラ粒子による異常電離(電離圏あらし)の影響を強く受ける。高度約90~130kmをE領域とよび,おもな電離源は太陽のX線(100~10Å)と紫外線(1027~800Å)である。高度100km付近に電子密度のピークをもつE層は日照半球において形成される。…

※「E 領域」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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