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DOI | 10.1029/2021GL093541 |
L-band Synthetic Aperture Radar Observation of Ionospheric Density Irregularities at Equatorial Plasma Depletion Region | |
Hiroatsu Sato; Jun Su Kim; Yuichi Otsuka; Cristiano Max Wrasse; Eurico Rodrigues de Paula; Jonas Rodrigues de Souza | |
2021-08-16 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Plasma density irregularities in the equatorial ionosphere are thought to cause the distortions of L-band Synthetic Aperture Radar (SAR) images which have been observed in recent years, but the origin of the image distortion has not yet been clearly identified experimentally. We report on the first simultaneous observation of equatorial plasma bubbles (EPBs) by the ALOS-2/PALSAR-2 satellite and ground 630-nm airglow imager in northern Brazil. We observe stripe-like distortions of SAR signal power that are aligned in the direction of local magnetic field lines. The stripe-like patterns are observed in the vicinity of airglow depletion. The result shows that the observed L-band SAR stripes are caused by ionospheric scintillation due to plasma irregularities with the scale size of hundreds of meters associated with EPBs. We show that the SAR scintillation stripes are predominantly found at the location of sharp density gradients in the two-dimensional form. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/335986 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Hiroatsu Sato,Jun Su Kim,Yuichi Otsuka,et al. L-band Synthetic Aperture Radar Observation of Ionospheric Density Irregularities at Equatorial Plasma Depletion Region[J]. Geophysical Research Letters,2021. |
APA | Hiroatsu Sato,Jun Su Kim,Yuichi Otsuka,Cristiano Max Wrasse,Eurico Rodrigues de Paula,&Jonas Rodrigues de Souza.(2021).L-band Synthetic Aperture Radar Observation of Ionospheric Density Irregularities at Equatorial Plasma Depletion Region.Geophysical Research Letters. |
MLA | Hiroatsu Sato,et al."L-band Synthetic Aperture Radar Observation of Ionospheric Density Irregularities at Equatorial Plasma Depletion Region".Geophysical Research Letters (2021). |
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