First observational evidence for the connection between the meteoric activity and occurrence of equatorial counter electrojet
First observational evidence for the connection between the meteoric activity and occurrence of equatorial counter electrojet
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DOI：
10.1016/j.jastp.2016.07.007
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发表时间：
2016-09
影响因子：
1.9
通讯作者：
C. Vineeth;N. Mridula;P. MuraliKrishna;K. K. Kumar-K.;T. Pant
中科院分区：
文献类型：
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作者：
C. Vineeth;N. Mridula;P. MuraliKrishna;K. K. Kumar-K.;T. Pant
本文提出了大气活动在赤道反电喷流（CEJ）产生中可能发挥的作用的第一个直接观测证据，CEJ是地磁赤道高层大气上一个神秘的日间电动力过程。利用印度Trivandrum地磁倾角赤道站（8.5°N, 77°E， 0.5°N倾角）的质子进动磁力计和流星风雷达数据进行的调查显示，一个月内下午CEJ事件的发生与该地点的月平均流星数成正比。研究发现，在考虑的研究期间，即2006年和2007年，观察结果非常一致。研究表明，流星雨通过减小向上极化场的强度，为CEJ的产生创造了有利的背景条件。
This paper presents the first direct observational evidence for the possible role of meteoric activity in the generation of the equatorial Counter Electrojets (CEJ), an enigmatic daytime electrodynamical process over the geomagnetic equatorial upper atmosphere. The investigation carried out using the data from Proton Precession Magnetometer and Meteor Wind Radar over a geomagnetic dip equatorial station, Trivandrum (8.5°N, 77°E, 0.5°N dip lat.) in India, revealed that the occurrence of the afternoon CEJ events during a month is directly proportional to the average monthly meteor counts over this location. The observation is found to be very consistent during the considered period of study, i.e the years 2006 and 2007. The study vindicates that the meteor showers play a major role in setting up the background condition conducive for the generation of CEJ by reducing the strength of the upward polarization field.