Magnetic declination control of the equatorial F region dynamo electric field development and spread F
Magnetic declination control of the equatorial F region dynamo electric field development and spread F
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DOI：
10.1029/ja086ia13p11443
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发表时间：
1981-12
影响因子：
--
通讯作者：
M. Abdu;J. Bittencourt;I. Batista
中科院分区：
文献类型：
--
作者：
M. Abdu;J. Bittencourt;I. Batista
我们对位于美洲区的两个磁赤道站--巴西福塔莱萨（4°S，38°W）和秘鲁的Jicamarca（12°S，77°W）上空的赤道F区垂直电离漂移速度（VZ）进行了夜间反转前增强的比较研究。结果表明，在VZ反转前峰值的时间和宽度的季节趋势，这反映在扩展F的特性，以及在两个站的深刻的差异。所示的相异之处主要是由磁场的不同，导致共轭E区日落持续时间的差异，因此，在F区极化电场的发展率在两个站。
We have carried out a comparative study of the evening prereversal enhancements in the equatorial F region vertical ionization drift velocities (VZ) over Fortaleza (4°S, 38°W), Brazil, and Jicamarca (12°S, 77°W), Peru, two magnetic equatorial stations in the American zone. The results show profound dissimilarities in the seasonal trends in the times and widths of the VZ prereversal peak, which reflect in the spread F characteristics as well, at the two stations. The dissimilarities are shown to be arising mainly from the difference in the magnetic field declination angles that causes differences in the conjugate E region sunset durations and, hence, in the F region polarization electric field development rates at the two stations.