2016年11月
Off-great-circle paths in transequatorial propagation: 1. Discrete and diffuse types
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
- ,
- ,
- ,
- ,
- ,
- ,
- ,
- 巻
- 121
- 号
- 11
- 開始ページ
- 11157
- 終了ページ
- 11175
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/2015JA021695
- 出版者・発行元
- AMER GEOPHYSICAL UNION
There is mounting evidence that plasma structure in nighttime equatorial F layer evolves from large-scale wave structure (LSWS) in the bottomside F layer. This process cannot be ignored because equatorial plasma bubbles (EPBs) arise from large-amplitude LSWS; and, because intense radiowave scintillations are associated with EPBs, understanding the LSWS-to-EPB process is a crucial step toward reliable Space Weather Forecasting. In this regard, the transequatorial propagation (TEP) experiment appears to be the most useful among available research instruments. After a lapse of 30 years, the TEP experiment has been resurrected; a goal of this research is to understand TEP measurements well enough so that they can be used to diagnose the LSWS-to-EPB process. Toward this end, new results are presented in two companion papers. Herein (P1), off-great-circle (OGC) propagation paths are shown to consist of two types, discrete and diffuse. The new findings include the following: (1) a generalized multireflection model that can explain most of the observed properties; (2) the discrete type is supported by multireflections from an unstructured upwelling, (3) the diffuse type is supported by reflections from plasma structure in EPBs; and (4) the observed east-west (EW) asymmetry can be explained in terms of a distorted upwelling or plasma structure along the west wall of an upwelling. In Paper 2 (P2), a second form of observed EW asymmetry is explained in terms of plasma structure, which is not aligned with the geomagnetic field. The findings strongly confirm a close relationship between upwellings, ESF patches, and OGC paths.
- リンク情報
-
- DOI
- https://doi.org/10.1002/2015JA021695
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000390403400036&DestApp=WOS_CPL
- URL
- http://www.scopus.com/inward/record.url?eid=2-s2.0-84997221707&partnerID=MN8TOARS
- URL
- http://orcid.org/0000-0001-8392-6455
- ID情報
-
- DOI : 10.1002/2015JA021695
- ISSN : 2169-9380
- eISSN : 2169-9402
- ORCIDのPut Code : 49698430
- SCOPUS ID : 84997221707
- Web of Science ID : WOS:000390403400036