Automatic Calculation of Daily Ionospheric Current Systems
نویسندگان
چکیده
منابع مشابه
Daily ionospheric forecasting service (DIFS) III
The daily variability of the ionosphere can greatly affect HF or SATCOM communications. HF skywave operators plan frequency schedules months in advance, however, they also require daily knowledge of the ionospheric conditions in order to modify assignments. SATCOM operators also require daily information about the levels of scintillation, which are variations in phase, amplitude, polarisation a...
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14 Ground-based observations of geomagnetic field (B-field) are usually a superposition of 15 signatures from different source current systems in the magnetosphere and ionosphere. 16 Fluctuating B-fields generate geoelectric fields (E-fields), which drive geomagnetically induced 17 currents (GIC) in technological conducting media at Earth’s surface. We introduce a new Fourier 18 integral B-fiel...
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Recent developments in tomographic imaging allow the use of GPS satellite data to image the Earth’s ionosphere. Ground-based GPS receivers monitor the Earth’s ionosphere continuously and a comprehensive database of ionospheric measurements suitable for tomographic processing now exists. The tomographic inversion of these GPS data in a three-dimensional time-dependent inversion algorithm can rev...
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A new technique for continuation of the ground magnetic field caused by ionospheric currents to the ionosphere in spherical geometry is presented that makes use of elementary ionospheric current systems, which were introduced by Amm (1997) in extension of an earlier work by Fukushima (1976). The measured ground magnetic disturbance is expanded in terms of the ground magnetic effect of a spatial...
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ژورنال
عنوان ژورنال: Geophysical Journal of the Royal Astronomical Society
سال: 2007
ISSN: 0016-8009
DOI: 10.1111/j.1365-246x.1968.tb05752.x