globalchange  > 科学计划与规划
DOI: 10.1002/2015GL063699
论文题名:
Real-time imaging of density ducts between the plasmasphere and ionosphere
作者: Loi S.T.; Murphy T.; Cairns I.H.; Menk F.W.; Waters C.L.; Erickson P.J.; Trott C.M.; Hurley-Walker N.; Morgan J.; Lenc E.; Offringa A.R.; Bell M.E.; Ekers R.D.; Gaensler B.M.; Lonsdale C.J.; Feng L.; Hancock P.J.; Kaplan D.L.; Bernardi G.; Bowman J.D.; Briggs F.; Cappallo R.J.; Deshpande A.A.; Greenhill L.J.; Hazelton B.J.; Johnston-Hollitt M.; McWhirter S.R.; Mitchell D.A.; Morales M.F.; Morgan E.; Oberoi D.; Ord S.M.; Prabu T.; Shankar N.U.; Srivani K.S.; Subrahmanyan R.; Tingay S.J.; Wayth R.B.; Webster R.L.; Williams A.; Williams C.L.
刊名: Geophysical Research Letters
ISSN: 0094-9472
EISSN: 1944-9203
出版年: 2015
卷: 42, 期:10
起始页码: 3707
结束页码: 3714
语种: 英语
英文关键词: field aligned ; ionosphere ; Murchison Widefield Array ; radio telescope ; whistler duct
Scopus关键词: Earth atmosphere ; Geometrical optics ; Imaging techniques ; Ionosphere ; Ionospheric measurement ; Magnetic fields ; Magnetosphere ; Radio telescopes ; Density structures ; Earth's magnetic field ; Earth's magnetosphere ; Feature-tracking ; Field aligned ; Inner plasmasphere ; Plasma environments ; Wide-field ; Ducts ; electromagnetic field ; field survey ; ground-based measurement ; ionization ; ionosphere ; magnetic field ; magnetosphere ; plasma ; radio ; real time
英文摘要: Ionization of the Earth's atmosphere by sunlight forms a complex, multilayered plasma environment within the Earth's magnetosphere, the innermost layers being the ionosphere and plasmasphere. The plasmasphere is believed to be embedded with cylindrical density structures (ducts) aligned along the Earth's magnetic field, but direct evidence for these remains scarce. Here we report the first direct wide-angle observation of an extensive array of field-aligned ducts bridging the upper ionosphere and inner plasmasphere, using a novel ground-based imaging technique. We establish their heights and motions by feature tracking and parallax analysis. The structures are strikingly organized, appearing as regularly spaced, alternating tubes of overdensities and underdensities strongly aligned with the Earth's magnetic field. These findings represent the first direct visual evidence for the existence of such structures. ©2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931569182&doi=10.1002%2f2015GL063699&partnerID=40&md5=fa60c19f9852e7287ceb0dc57c2208d7
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9087
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: Sydney Institute for Astronomy, School of Physics, University of Sydney, Sydney, NSW, Australia

Recommended Citation:
Loi S.T.,Murphy T.,Cairns I.H.,et al. Real-time imaging of density ducts between the plasmasphere and ionosphere[J]. Geophysical Research Letters,2015-01-01,42(10).
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