630 nm nightglow observations from 17°N latitude

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概要

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• Regular measurements of [OI] 630 nm nightglow have been carried out at Kolhapur (16.8°N, 74.2°E, dip lat 10.6°N) in India with the help of tilting filter photometers during clear moonless nights. Several characteristic nightglow data sets are presented in the report for geomagnetically quiet and disturbed nights. A comparison has been made between the simultaneous nightglow and the ionospheric parameters of virtual <I>F</I>-layer height and critical frequency of the <I>F</I>-layer at Ahmedabad (23.02°N, 72.6°E). In general, a good correlation (c.c.= 0.8 to 0.9) is found between the measured airglow emission and <I>F</I>-region peak electron densities during quiet periods but for intense magnetic disturbances the airglow fluctuations are mainly controlled by sharp changes in height variations of the <I>h</I>′ F layer. The period of airglow variation generally corresponds to periods of <I>F</I>-region height variation during magnetic disturbances. Using a long series of data between December 1989 and April 1996, the mean seasonal nocturnal variations of 630 nm emission have been compared during high and low solar activity periods.

• 公益社団法人 日本地震学会、地球電磁気・地球惑星圏学会 、特定非営利活動法人 日本火山学会、日本測地学会、日本惑星科学会の論文

著者

• Mahajan S.

  Indian Institute Of Geomagnetism

• CARLO L.

  Indian Institute of Geomagnetism

• Mukherjee G.

  Indian Inst. Geomagnetism Navi Mumbai Ind

• Mukherjee G.

  Indian Institute of Geomagnetism, Dr. Nanabhai Moos Marg

関連論文

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• Nightglow Measurements of 630.0 nm Line from Kolhapur, India and Their Association with TEC Enhancements
• 630 nm nightglow observations from 17°N latitude

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