Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2010, Vol. 7, No. 3, pp. 94-98
Ionosphere effects of total solar eclipse of July 22, 2009 as deduced
from Japanese dense GPS network (GEONET) data
E.L. Afraimovich
, S.V. Voeykov
, I.K. Edemskiy
Institute of Solar-Terrestrial Physics SB RAS, Russia, 664033, Irkutsk, p/o box 291, Lermontov st. 126a
This paper presents analysis results of typical ionosphere response on total solar eclipse (SE) of July 22, 2009 by
total electron content data from dense GPS network in Japan (network GEONET with more that 1200 sites). Good
registration of SE response was possible only at short distances from total eclipse region, where value of maximum
eclipse phase exceeds 85%. Value of delay between maximum SE phase observation and TEC response minimum
registration does not exceed 6 min. Response amplitude decreases almost linear from -0.35 to -0.15 TECU with increasing
of distance to total eclipse region.
Keywords: ionosphere disturbances, solar eclipse, total electron content, GPS
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