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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2011, Vol. 8, No. 4, pp. 85-93

The Ionosphere F2-layer Variations under Tropical cyclone influence by tomography sounding data

L.B. Vanina-Dart 1, А.А. Romanov 2, Е.А. Sharkov 1
1 Space Research Institute of RAS, 117997 Moscow, 84/32 Profsoyuznaya str
2 FGUP «The Russian scientific research institute of Space instrument making», 111250, Moscow, 53 Aviamotornaya str
In this paper tomography sounding data taken in November 2007 are considered for following three points located on one meridian: Uzhno-Sahalinsk (47° N, 143° E), Poronajsk (49° N, 143° E) and Nogliki (52° N, 143° E). The aim of this research is to find the possible influence of tropical cyclone (TC) on the higher ionosphere. Using the ionospheric tomography method, which based on low orbital satellite navigating system signals, allows revealing variations of ionospheric parameters of the strong cyclones caused by distribution in troposphere of the Earth. It is impossible to reach it by only using global satellite navigating systems GLONASS and GPS. Received results suggest that a TC may impact on the upper ionospheric parameter values by as much as 40%. The influence of potential disturbance source (TC) on the F2 layer heights decreases sharply after a distance of 4000-5000 km from TC centre in the "east- west» axes. Complexities of the morphological analysis of the given phenomenon consist that TC is "a broadband" and long-running source of disturbance. This work is supported by RFBR (grant №9-05-01019-a).
Keywords: layers interaction, ionosphere, tropical cyclone, tomography sounding, critical frequency of F2-Layer
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References:

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  2. Vanina-Dart L.B., Romanov A.A., Sharkov E.A., Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2010, Vol. 7, No. 1, pp. 173-189.
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