Upwelling Coherent Backscatter Plumes Observed with Ionosondes in Low-Latitude Region

IF 4.3 3区材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

ACS Applied Electronic Materials Pub Date : 2022-04-04 DOI:10.1051/swsc/2022010

Chunhua Jiang, Lehui Wei, T. Yokoyama, Jiyao Xu, Kun Wu, W. Yuan, Jing Liu, Tongxin Liu, Guobin Yang, Zhengyu Zhao

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Abstract

Investigations of upwelling backscatter plumes are mostly from observations of VHF radars. In this study, we report the first observation of upwelling backscatter plumes (backscatter echoes beyond the critical frequency of the F2 layer, foF2) recorded by ionosondes at low latitudes on 13 March, 2015. With a pair of ionosondes (Puer, 22.7o N, 101.05o E, Dip Lat 12.9o N, and Chiang Mai, 18.76o N, 98.93o E, Dip Lat 9.04o N), Swarm satellites flying side-by-side (longitudinal separation of about 1.4°, about 150 km), and an all-sky imager (25o N, 104o E, Dip Lat 15.1o N), the evolution of plasma bubbles is presented in this study. Observations show that ionosonde backscatter plumes originating from a local-scale upwelling could be observed. In addition, this study also reported ionosonde backscatter plumes from other regions with approaching and receding characteristics. Results show that characteristics of backscatter plumes with ionosondes are consistent with observations from VHF radars. It suggests that ionosonde backscatter plumes might be used to study characteristics of upwelling backscatter plumes as well.

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低纬度地区电离探空仪观测的上升流相干后向散射羽流

对上升流后向散射羽流的研究大多来自甚高频雷达的观测。本文报道了2015年3月13日在低纬度地区首次观测到上升流后向散射羽流(后向散射回波超过F2层的临界频率，foF2)。利用一对离子探空仪(Puer, 22.70 N, 101.050 E，倾角12.90 N, Chiang Mai, 18.76 N, 98.93 E，倾角9.040 N)， Swarm卫星并排飞行(纵距约1.4°，约150 km)，以及一台全天成像仪(25o N, 1040 E，倾角15.10 N)，对等离子体气泡的演化进行了研究。观测表明，可以观测到来自局地尺度上升流的电离空仪后向散射羽流。此外，本研究还报道了来自其他地区的具有接近和后退特征的电离探空仪后向散射羽流。结果表明，利用电离层探空仪观测到的后向散射羽流特征与VHF雷达观测结果基本一致。这表明电离层探测后向散射羽流也可以用于研究上升流后向散射羽流的特征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Electronic Materials Multiple-

CiteScore

7.20

自引率

4.30%

发文量

567