气候变化领域集成服务门户(CCPortal): Spacelab-2 plasma depletion experiments for ionospheric and radio astronomical studies

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DOI	10.1126/science.238.4831.1260
	Spacelab-2 plasma depletion experiments for ionospheric and radio astronomical studies
	Mendillo M.; Baumgardner J.; Allen D.P.; Foster J.; Holt J.; Ellis G.R.A.; Klekociuk A.; Reber G.
发表日期	1987
ISSN	0036-8075
起始页码	1260
结束页码	1264
卷号	238 期号:4831
英文摘要	The Spacelab-2 Plasma Depletion Experiments were a series of studies to examine shuttle-induced perturbations in the ionosphere and their application to ground-based radio astronomy. The space shuttle Challenger fired its orbital maneuvering subsystem engines on 30 July and 5 August 1985, releasing large amounts of exhaust molecules (water, hydrogen, and carbon dioxide) that caused the electrons and ions in Earth's upper atmosphere to chemically recombine, thereby creating so-called "ionospheric holes." Two burns conducted over New England produced ionospheric peak depletions rangng from 25 to 50 percet, affected the ionosphere over a 200-kilometer altitude range, and covered 1° to 2° of latitude. Optical emissions assocated with the hole spanned an area of several hundred thousand square kilometers. A third burn was conducted over a low-frequency radio observatory in Hobart, Australia, to create an "artificial window" for ground-based observations at fequencies normall below the natural ionospheric cutoff (penetration) frequency. The Hobart experiment suceeded in making high-resolution observations at 1.7 megahertz through the induced ionospheric hole.
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244745
作者单位	Department of Astronomy, Boston University, Boston, MA 02215; Massachusetts Institute of Tehnology, Haystack Observatory, Westford, MA 01886; Department of Physics, University of Tasmaniia, Hobart, Tasmania, Australia
推荐引用方式 GB/T 7714	Mendillo M.,Baumgardner J.,Allen D.P.,et al. Spacelab-2 plasma depletion experiments for ionospheric and radio astronomical studies[J],1987,238(4831).
APA	Mendillo M..,Baumgardner J..,Allen D.P..,Foster J..,Holt J..,...&Reber G..(1987).Spacelab-2 plasma depletion experiments for ionospheric and radio astronomical studies.Science,238(4831).
MLA	Mendillo M.,et al."Spacelab-2 plasma depletion experiments for ionospheric and radio astronomical studies".Science 238.4831(1987).