NSWP: High Frequency (HF) Doppler Radar for Low Latitude Studies

在秘鲁Jicamarca的非相干散射雷达设施中放置了一台多普勒高频（HF）雷达，目的是解开导致赤道等离子体气泡（EPBs）开始的过程，并进而解开穿越电离层的无线电信号闪烁，包括GPS信号。对f区峰以下的电离层扰动的光谱和传播进行了表征，并确定了它们与Jicamarca观测到的epb的关系。在太阳极小期条件下，确定了中性风反转前离子密度增强时垂直离子漂移的变异性，并确定了这种变异性与赤道等离子体气泡发生的关系。中性风调节epb发生的程度，以及可能超越其他有效触发机制的程度，也可以使用附近法布里-珀罗干涉仪的数据进行评估。确定的f区电离层峰值以下的等离子体扰动、垂直离子漂移的可变性、中性风和EPB爆发之间的关系最终被用于预测EPB的产生，以及相关的射电闪烁。

A Doppler High Frequency (HF) radar is placed at the Jicamarca Peru Incoherent Scatter Radar Facility for the purpose of untangling the processes that lead to the onset of equatorial plasma bubbles (EPBs), and in turn to scintillations of radio signals traversing the ionosphere, including GPS signals. The spectra and propagation of ionospheric perturbations just below the F-region peak are characterized, and their relationship to EPBs observed at Jicamarca is determined. The variability of vertical ion drift in the enhanced ion density preceding the neutral wind reversal is determined during solar minimum conditions, and the relationship of that variability to equatorial plasma bubble onset is determined. The extent to which neutral winds modulate the occurrence of EPBs, and possibly override otherwise effective triggering mechanisms is also evaluated using data from nearby Fabry-Perot interferometers. The determined relationships between plasma perturbations below the F-region ionospheric peak, variability of the vertical ion drift, the neutral wind, and EPB onset are finally used to in an attempt to predict EPB generation, along with associated radio scintillations.