Presentation on theme: "SuperDARN is a network of HF radars (8-20 MHz) used to study the convection in the Earth's ionosphere at altitudes between 90 and 400 km and at magnetic."— Presentation transcript:
SuperDARN is a network of HF radars (8-20 MHz) used to study the convection in the Earth's ionosphere at altitudes between 90 and 400 km and at magnetic latitudes between 60° and 90° (each radar has 16 azimuthal beams and 75 ranges). SuperDARN developed in the last 12 years. and 7 in the southern hemisphere. At present, 10 radars operate in the northern hemisphere
Temporal Response of Ionospheric Convection to Solar Wind Transitions SuperDARN Science highlights. Imaging High-Latitude Ionospheric Convection Determination of Global Poynting Flux and Joule Heating Global Detection of Atmospheric Gravity Waves and Planetary Waves Measurement of Cross-Polar-Cap Potential Drop Magnetic Reconnection Science Flow Transients and Variability Conjugate Studies of Ionospheric and Magnetospheric Convection Ionospheric Plasma Instabilities ULF Pulsations Magnetic Conjugacy
B z < 0 B z > 0 Magnetic reconnection in the magnetosphere. 12 MLT
Imaging High-Latitude Ionospheric Convection Spherical harmonics JHUAPL model for CPC potential 12 MLT
Counter-rotating convection cells in the dayside high-latitude polar cap [From Huang et al., 2000]. These patterns had been postulated to occur under northward IMF conditions. SuperDARN was the first instrument network to confirm their existence. Imaging High-Latitude Ionospheric Convection
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