Ionospheric E–F valley observed by a sounding rocket at the low-latitude station Hainan

J. K. Shi, Z. Wang, K. Torkar, M. Friedrich, X. Wang, C. Liu, Y. B. Guan, G. W. Zhu
2013 Annales Geophysicae  
<p><strong>Abstract.</strong> According to the sounding rocket experiment conducted at Hainan ionospheric observatory (19.5° N, 109.1° E), a valley between the E layer and F layer in the ionospheric electron density profile is observed and presented. The sounding rocket was launched in the morning (06:15 LT) on 7 May 2011, and the observed electron density profile outside the valley agrees with the simultaneous observation by the DPS-4 digisonde at the same station. The width of the observed
more » ... ley was about 42 km, the depth almost 50%, and the altitude of the electron density minimum 123.5 km. This is the first observation of the E–F valley in the low-latitude region in the East Asian sector. The results are also compared with models, and the physical mechanism of the observed valley is discussed in this paper.</p>
doi:10.5194/angeo-31-1459-2013 fatcat:nuux47dh3vb7jcnwx6zbglzq3m