A comparative study of atmospheric Maxwell current and electric field from a low latitude station, Tirunelveli

スポンサーリンク

概要

• 論文の詳細を見る

• Simultaneous measurements of atmospheric Maxwell current and electric field, using horizontal long wire antenna and passive horizontal wire antenna system at 1 m above the Earth's surface, were carried out at Tirunelveli (8.7°N, 77.8°E), India, during January/February 2002. The objectives of the present work have been to understand the nature of the measured atmospheric electrical parameters and explore the possibility of detecting the signature associated with the global thunderstorm activity. As the measurements indicate, the atmospheric electrical parameters at Tirunelveli are severely masked by the locally induced current components during disturbed weather conditions, for example, severe convective activity. During the selected fair weather conditions, the hourly averaged diurnal variation curves of Maxwell current and electric field are characterized by two peaks: The first peak is the local "sunrise effect" and the second peak occurs at times close to 1900 UT, the time of maximum global thunderstorm activity as noted in the famous "Carniege curve". The correlation coefficient between the measured Maxwell current and electric field has a high value (more than 0.8) for all the fair weather days. These results support our view that this site is free from local pollution during the fair weather conditions and is suitable for long-term measurements of atmospheric electrical parameters.

• 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

• Nair K.

  Equatorial Geophysical Research Laboratory Indian Institute Of Geomagnetism

• Rajaram R.

  Equatorial Geophysical Research Laboratory Indian Institute Of Geomagnetism

• Jeeva K.

  Equatorial Geophysical Research Laboratory Indian Institute Of Geomagnetism

• Selvaraj C.

  Equatorial Geophysical Research Laboratory Indian Institute Of Geomagnetism

• Panneerselvam C.

  Equatorial Geophysical Research Laboratory Indian Institute Of Geomagnetism

• Gurubaran S.

  Equatorial Geophysical Research Laboratory

関連論文

• Diurnal variation of atmospheric Maxwell current over the low-latitude continental station, Tirunelveli, India (8.7°N, 77.8°E)
• A comparative study of atmospheric Maxwell current and electric field from a low latitude station, Tirunelveli
• QBO influences on the variability of planetary waves in the equatorial mesopause region
• Measurement of atmospheric air-earth current density from a tropical station using improvised Wilson's plate antenna
• Radar observation of the diurnal tide in the tropical mesosphere-lower thermosphere region : Longitudinal variabilities
• Instrumentation for the surface measurements of atmospheric electrical parameters at Maitri, Antarctica : First results
• A comparison of optically measured daytime OH temperatures over the tropics during solar maximum and minimum periods
• A comparative study of atmospheric Maxwell current and electric field from a low latitude station, Tirunelveli

スポンサーリンク