Other
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmsh53a..09y&link_type=abstract
American Geophysical Union, Spring Meeting 2008, abstract #SH53A-09
Other
2799 General Or Miscellaneous, 6299 General Or Miscellaneous, 7524 Magnetic Fields, 7599 General Or Miscellaneous, 7899 General Or Miscellaneous
Scientific paper
: One of many objectives of IHY is the deployment of networks of small instruments, especially closing the land-based gaps of instruments around the world. One of the regions that have been almost entirely devoid of ground-based instruments is the African continent. Such uneven distribution of ground-based instruments hinders our ability to obtain a global understanding of the equatorial ionosphere. In the African sector, for example, a continuous ground-based observation of the equatorial ionospheric irregularities is not possible due to lack of ground-based instruments, causing many fundamental questions to remain unanswered. Satellite observations indicate the equatorial ionospheric density structures in the African continent respond to space weather effects differently than do other parts of the Earth. For example, in the African equatorial region, satellite observations show that the F-region bubbles are much deeper than the bubbles observed in any other longitudinal sectors, and are very active year round compared with other regions. Observations also show that the bubbles in Africa rises to high altitude (up to 1000+ kilometers) more frequently compared with other longitudes. However, these responses have not been studied in detail by observations from the ground due to the lack of suitable ground-based instrumentation in the region. Thus, the cause of these unique density irregularities in the continent remains a mystery for the scientific community. Therefore, in order to have a better understanding, the scientific communities, using the IHY platform, are now closing the largest land-based gap in ground-based instruments such as GPS receivers and magnetometers. The instrumentation network in African is already developing rapidly with GPS receivers from SCINDA, AMMA, IGS, and AGREES and magnetometers from MAGDAS and AMBER. In addition to new scientific discoveries and advancing space science research in Africa by establishing scientific collaborations between scientists in developed and developing nations, another key IHY objective is to develop space science research and educational infrastructure in order to have long term operation and use of the science instrumentation.
Moldwin Mark B.
Yizengaw Endawoke
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