HR: 1340h
AN: SA13A-1078    [Abstracts]
TI: Ionospheric Traveling Ionospheric Disturbance Measurements at Northern Mid- latitudes
AU: * MacDougall, J
EM: jmacdoug@uwo.ca
AF: Univ. Western Ontario, Dep. Electrical Engineering Univ. Western Ontario, London, ON n6a 5b9, Canada
AU: Li, G
EM: gli44@uwo.ca
AF: Univ. Western Ontario, Dep. Electrical Engineering Univ. Western Ontario, London, ON n6a 5b9, Canada
AB: Three low power coded transmitters have been used for measurement of gravity waves at London, Canada (43 geog. lat., 54 mag. lat). The transmitters are at apexes of an approximately equilateral triangle with 72 km sides. The signals reflected from the ionosphere are received at our university campus which is located within the triangle. TID measurements on 4 MHz during August show systematic motions: northeastward during daytime and northward during early nighttime. We compare our measurements with other measurements of midlatitude TIDs. The best comparison is with Munro's extensive TID measurements for Australia which showed daytime southeast directions in summer. This therefore is the same as we find: eastward and poleward in summer.
DE: 2427 Ionosphere/atmosphere interactions (0335)
DE: 2443 Midlatitude ionosphere
DE: 2494 Instruments and techniques
DE: 3384 Acoustic-gravity waves
SC: SPA-Aeronomy [SA]
MN: 2007 Fall Meeting