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A new Scanning Doppler Imager (SDI) has been constructed and recently located to Mawson, Antarctica. The SDI is a separation scanning Fabry-Perot Interferometer (FPI) coupled to an all-sky lens and imaging detector. This permits rapid scanning of the interference fringes over most of the sky.
We report the first observations of simultaneous high-latitude interhemispheric … F-region neutral wind fields by combining the 630 nm optical … measurements from two scanning Doppler imagers (SDI) and three … Fabry-Perot interferometers (FPI) for a period exceeding 5 hours.
A magnetic cloud in the solar wind impinged the Earths magnetosphere on the 7th January … 2005. Episodic enhancements in the coupling of solar wind energy initiated a familiar sequence … of Geospace events including a succession of substorms of increasing intensity throughout the … day.
The solar wind, magnetosphere, and ionosphere form a vast multi-scale system.
The Tasman International Geospace Environment Radar (TIGER), which is part of the global SuperDARN network, is a dual HF radar system with overlapping footprints designed to map ionospheric motions by detecting ionospheric scatter.
Earthward injections of energetic ions and electrons … mark the onset of magnetospheric substorms. In the inner … magnetosphere (L4), the energetic ions drift westward … and the electrons eastward, thereby enhancing the equatorial … ring current.
The Doppler velocity and spectral width are two … important parameters derived from coherent scatter radar … systems. The Super Dual Auroral Radar Network (Super- … DARN)…
The existence of Polar Mesosphere Summer Echoes (PMSE) in the Southern Hemisphere … (SH) has recently been confirmed using HF radar (Ogawa et al., 2002), MST … radar (Morris et al., 2004), and a Dynasonde (Jarvis et al., 2005) following earlier … observations using MST radar (Woodman et al., 1999).