Radar interferometric imaging studies of long-duration meteor echoes observed at Jicamarca

Details Radar interferometric imaging studies of long-duration meteor echoes observed at Jicamarca Radar interferometric imaging studies of long-duration meteor echoes observed at Jicamarca

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jgr....99.8937c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol 99, no. A5, p. 8937-8949

Astronomy and Astrophysics

Astronomy

30

Earth Ionosphere, Imaging Techniques, Meteor Trails, Meteoroids, Radar Echoes, Radar Imagery, Velocity Distribution, Wind Profiles, Astronomical Interferometry, Data Reduction

Scientific paper

A large number of long-duration (greater than or equal to 15 s) meteor echoes were detected at the Jicamarca Radio Observatory on two nights in early August 1990 during an evening electrojet experiment. Using an interferometric imaging technique, we were able to measure a zonal velocity profile for each meteor trail. Our analysis procedure differs from conventional meteor wind methods in that it provides instantaneous profiles rather than long-term average information. Significant altitudinal and temporal variabilities of the horizontal velocities were noted. Zonal speeds of up to 100 m/s, large vertical shears of up to 20 m/s/km, and rapid temporal variations of up to 50 m/s over an hour interval were observed. Spectral analysis indicates the presence and decay of asymmetrical high-frequency signal components. Possible explanations for the observed high-frequency components are discussed as are the angle of arrival of and the scattering mechanism responsible for the meteor echoes.

Affiliated with

Also associated with

No associations

Rating

Radar interferometric imaging studies of long-duration meteor echoes observed at Jicamarca 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 Radar interferometric imaging studies of long-duration meteor echoes observed at Jicamarca, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radar interferometric imaging studies of long-duration meteor echoes observed at Jicamarca will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-887443