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2009年7月22日日全食期间VLF信号的异常变化 被引量:1

Anomalous Variation of VLF Signals in the Total Solar Eclipse on Jul. 22nd 2009
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摘要 在2009年7月22日日全食期间,用美国斯坦福大学太阳中心提供的电离层突扰(SID)监测仪对甚低频(VLF)信号进行观测时发现:日全食期间的VLF信号强度变化异常,出现类似日出日落的效应;信号强度振幅变大,类似于雷电效应;而且信号强度在日全食前后一段时间内都有所增强.在对观测数据的可靠性进行充分讨论的基础上,对比以往的观测结果,发现电离层会在日全食发生之前有所变化. Using the sudden ionospheric disturbance (SID) monitor provided by Stanford University, the very low frequency (VLF) signals were observed in Nanjing during the total solar eclipse on Jul. 22nd 2009. It is found that the intensity of the VLF signals evidently increased during the total solar eclipse, similar to the effect of sunrise and sunset. The intensity of the VLF signals strongly fluctuated, similar to the phenomena of thunderbolt. Moreover, this intensity increased during both periods before and after the total eclipse. Based on the discussions of the reliability of the observational data and the comparison with the previous observations, the possible explanation for the variation of ionosphere before the total solar eclipse is proposed.
出处 《天文学报》 CSCD 北大核心 2010年第3期278-284,共7页 Acta Astronomica Sinica
关键词 日月食 地球 大气层 方法 数据分析 eclipses, earth atmosphere, methods data analysis
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  • 1牛有田,田育庶.罗兰—C天波传播时延的间接法精确测量[J].电波科学学报,1994,9(2):36-44. 被引量:5
  • 2田育庶,潘威炎,余运超,等.甚低频(VLF)无线电系统电波场强与相位计算方法[S].中华人民共和国国家军用标准(GJB/Z 70-95),1996.
  • 3Wait J R.Characteristics of the earth-ionosphere waveguide for VLF radio waves[J].NBS Tech Note,1964,300:1-24.
  • 4Schoute-vanneck C.A.VLF Radio Transmissions at Sunrise[J].Journal of Atmosphere and Terrestrial Physics,1974,36:489-499.
  • 5NASA.Total Solar Eclipse of 1997 March 9[Z].NASA RP 1369,http://umbra.nascom.nasa.gov/eclipse/970309/text/maps.html,2008-02-08.
  • 6沃特.甚低频无线电工程[M].北京.国防工业出版社,1973.
  • 7Wait J R. A diffraction theory for LF sky wave propagation[J]. Journal Geophysical Research, 1961,66(6) :1713-1724.
  • 8Berry L A. Wave Hop Theory of Long Distance Propagation of Low Frequency Radio Waves[J]. Radio Science Journal of Research NBS/USNC-URS1,1964,68D(12):1275-1284.
  • 9Shapiro L D. Loran-C Sky-Wave Delay Measurements[J]. IEEE Transactions on Instrumentation and Measurement, 1968,1M-17(4): 366-372.
  • 10牛有田,郝好贞,陈建峰,王海波,田育庶.罗兰-C天波传播时延的稳定性与空间相关性[J].河南师范大学学报(自然科学版),2008,36(4):54-56. 被引量:4

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  • 1唐卫明,刘智敏.GPS载波相位平滑伪距精度分析与应用探讨[J].测绘信息与工程,2005,30(3):37-39. 被引量:24
  • 2Baran, L. , I. Ephishov, et al. The response of the ionospheric total electron content to the solar eclipse on August 11, 1999. Advances in Space Research, 2003,31(4) : 989-994.
  • 3Abidin A R, Z. , M. A M, et al. GPS ionospheric TEC measurement during the 23rd November 2003 total solar eclipse at Scott Base Antarctica. Journal of Atmospheric and Solar-Terrestrial Physics,2006,68(11) : 1219-1236.
  • 4Krankowski, A. , I. Shagimuratov, et al. The effect of total solar eclipse of October 3, 2005, on the total electron content over Europe Advances in Space Research, 2008,41 (4): 628-638.
  • 5Ding,F, Wan W X, etal. GPS TEC response to the 22 July 2009 total solar eclipse in East Asia. Journal of Geophysical Research, 2010,115 (A7) : A07308.
  • 6Afraimovieh, E. , E. Kosogorov, et al. Ionospheric eIfects of the August 11, 1999 total solar eclipse as deduced from European GPS network data. Advances in Space Research, 2001,27 (6-7) 1351-1354.
  • 7Chandra, H. , S. Sharma, et al. Ionospheric measurements during the total solar eclipse of 11 August 1999. Earth, Planets, and Space,2007,59(1) : 59-64.
  • 8Jakowski, N. , S. M. Stankov, et al. Ionospheric behavior over Europe during the solar eclipse of 3 October 2005. Journal of Atmospheric and Solar-Terrestrial Physics, 2008, 70(6): 836 853.
  • 9F. Espenak, J. Anderson. Total Solar Eclipse of 2009 July 22,NASA/TP-2008 - 214169.
  • 10徐文耀.地球电磁现象物理学.合肥:中国科学技术大学出版社,2008.

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