DOI: 10.1002/2015GL066673
论文题名: A coupled ionosphere-raytrace model for high-power HF heating
作者: Zawdie K.A. ; Huba J.D. ; Drob D.P. ; Bernhardt P.A.
刊名: Geophysical Research Letters
ISSN: 0094-8429
EISSN: 1944-8160
出版年: 2015
卷: 42, 期: 22 起始页码: 9650
结束页码: 9656
语种: 英语
英文关键词: artificial HF heating
; ionosphere
; modeling
Scopus关键词: Ionosphere
; Ionospheric measurement
; Location
; Models
; 3-d modeling
; Density cavity
; Heating experiment
; High power
; Ionosphere modeling
; Ionospheric gradients
; Ionospheric heating
; Physical mechanism
; Heating
; density
; experimental study
; heating
; ionosphere
; ray tracing
; refraction
; three-dimensional modeling
; wave reflection
; Arecibo
; Puerto Rico
英文摘要: The first 3-D model of artificial HF ionospheric heating to self-consistently calculate the modification in heating location due to evolving ionospheric gradients has been developed. The model combines the ionosphere model SAMI3/ESF and the HF propagation code MoJo-15. At each time step, the simulated path of the HF wave through the ionosphere is used to determine the HF heating location. These calculations have been used to explain the physical mechanism responsible for the snapback effect observed in an Arecibo HF heating experiment described by Bernhardt et al. (1988). The heater wave is refracted by the density cavity, which causes the heating location to drift in longitude. Eventually, the density cavity convects into the path of the refracted ray, such that only a small portion of the ray is above the threshold for HF heating and the heating location snaps back even though the ray itself is still refracted in longitude. Key Points The first self-consistent 3-D model of artificial HF heating has been developed The simulations explain the physical mechanism responsible for the snapback effect The snapback effect can be suppressed by reducing the heater power and/or frequency. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956906568&doi=10.1002%2f2015GL066673&partnerID=40&md5=fe84a15a95ccab81f3308a6299e63586
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8045
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Space Science Division, Naval Research Laboratory, Washington, DC, United States
Recommended Citation:
Zawdie K.A.,Huba J.D.,Drob D.P.,et al. A coupled ionosphere-raytrace model for high-power HF heating[J]. Geophysical Research Letters,2015-01-01,42(22).