Coordinated Observation of Large-scale TIDs by SuperDARN and GEONET

Details Coordinated Observation of Large-scale TIDs by SuperDARN and GEONET Coordinated Observation of Large-scale TIDs by SuperDARN and GEONET

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsa21c0366n&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SA21C-0366

Physics

2407 Auroral Ionosphere (2704), 2427 Ionosphere/Atmosphere Interactions (0335), 2435 Ionospheric Disturbances, 2443 Midlatitude Ionosphere, 2487 Wave Propagation (6934)

Scientific paper

We present results of the multi-event analysis of the relationship between mid-latitude large-scale traveling ionospheric disturbances (LSTIDs) observed by the GPS receiver network in Japan (GEONET), which have a period of 30 to 120 minutes and longer than 1000 km wavelengths, and the high-latitude ionospheric disturbances observed by the SuperDARN radars. Among the mid-latitude LSTID events observed by GEONET between July 2002 and December 2003, we found 5 examples where the Alaskan SuperDARN radars observed enough amounts of ground scatter echoes. For all of these events the radar data showed long-period (1 to 1.5 hours) oscillation in the Doppler velocities, probably corresponding to the vertical oscillation of the ionosphere, about 2-hours prior to the observation of mid-latitude LSTIDs. This is consistent with the general recognition that LSTIDs are ionospheric manifestations of large-scale gravity waves excited by the energy input from the magnetosphere to the auroral ionosphere. The time delays between these high and middle latitude LSTIDs are consistent with the difference in latitude and the observed propagation speed. Detailed discussion on the propagation and damping mechanism of LSTID will be presented.

Affiliated with

Also associated with

No associations

Rating

Coordinated Observation of Large-scale TIDs by SuperDARN and GEONET does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Coordinated Observation of Large-scale TIDs by SuperDARN and GEONET, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coordinated Observation of Large-scale TIDs by SuperDARN and GEONET will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1456795