Nighttime medium-scale traveling ionospheric disturbances observed by ground optical instruments at high- and low-latitudes

Details Nighttime medium-scale traveling ionospheric disturbances observed by ground optical instruments at high- and low-latitudes Nighttime medium-scale traveling ionospheric disturbances observed by ground optical instruments at high- and low-latitudes

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsa23c..02s&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SA23C-02

Physics

[2435] Ionosphere / Ionospheric Disturbances, [2437] Ionosphere / Ionospheric Dynamics, [2439] Ionosphere / Ionospheric Irregularities, [2443] Ionosphere / Midlatitude Ionosphere

Scientific paper

Medium-scale traveling ionospheric disturbances (MSTIDs) are a density gradient structure with a scale size of less than 1000 km in the ionosphere, and are probably caused by thermospheric gravity waves and ionospheric instabilities. Ground-based all-sky cooled-CCD cameras have a suitable field-of-view (~1000 km) and sensitivity to observe nighttime MSTIDs at various locations through 630.0 nm airglow. In this talk, we will report our recent observations of MSTIDs at high- and low-latitude ground stations and their possible relation to the equatorial density anomalies.

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