| Detection of large-scale concentric gravity waves from a Chinese airglow imager network | |
| Lai Chang; Yue Jia; Xu Jiyao; Yuan Wei; Li Qinzeng; Liu Xiao; Lai, Chang (laichang@cqupt.edu.cn) | |
| Department | 空间科学部 |
| Source Publication | Journal of Atmospheric and Solar-Terrestrial Physics
 |
| 2017 | |
| ISSN | 1364-6826 |
| Language | 英语 |
| Keyword | Concentric Gravity Waves Large-scale Waves All-sky Imager Network Assembling Algorithm Low-pass Filtering Algorithm |
| Abstract | Concentric gravity waves (CGWs) contain a broad spectrum of horizontal wavelengths and periods due to their instantaneous localized sources (e.g., deep convection, volcanic eruptions, or earthquake, etc.). However, it is difficult to observe large-scale gravity waves of >100 km wavelength from the ground for the limited field of view of a single camera and local bad weather. Previously, complete large-scale CGW imagery could only be captured by satellite observations. In the present study, we developed a novel method that uses assembling separate images and applying low-pass filtering to obtain temporal and spatial information about complete large-scale CGWs from a network of all-sky airglow imagers. Coordinated observations from five all-sky airglow imagers in Northern China were assembled and processed to study large-scale CGWs over a wide area (1800 km × 1 400 km), focusing on the same two CGW events as Xu et al. (2015). Our algorithms yielded images of large-scale CGWs by filtering out the small-scale CGWs. The wavelengths, wave speeds, and periods of CGWs were measured from a sequence of consecutive assembled images. Overall, the assembling and low-pass filtering algorithms can expand the airglow imager network to its full capacity regarding the detection of large-scale gravity waves. © 2017 Elsevier Ltd. |
| Indexed By | SCI ; EI |
| Document Type | 期刊论文 |
| Identifier | http://ir.nssc.ac.cn/handle/122/6068 |
| Collection | 空间科学部 |
| Corresponding Author | Lai, Chang (laichang@cqupt.edu.cn) |
| Recommended Citation GB/T 7714 | Lai Chang,Yue Jia,Xu Jiyao,et al. Detection of large-scale concentric gravity waves from a Chinese airglow imager network[J]. Journal of Atmospheric and Solar-Terrestrial Physics,2017. |
| APA | Lai Chang.,Yue Jia.,Xu Jiyao.,Yuan Wei.,Li Qinzeng.,...&Lai, Chang .(2017).Detection of large-scale concentric gravity waves from a Chinese airglow imager network.Journal of Atmospheric and Solar-Terrestrial Physics. |
| MLA | Lai Chang,et al."Detection of large-scale concentric gravity waves from a Chinese airglow imager network".Journal of Atmospheric and Solar-Terrestrial Physics (2017). |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| 2017S136468261730177（2695KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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