PERGAMON Planetary and Space Science 36 "0888 096013 (1998)
BibTeX
@MISC{Matter98pergamonplanetary,
author = {See Front Matter},
title = {PERGAMON Planetary and Space Science 36 "0888 096013},
year = {1998}
}
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Abstract
A project to determine some long!term statistical properties of the terrestrial meteor ~ux is described[ A passive\ 44 MHz "US ! TV channel 1#\ forward!scatter radiometeor detection and simple "Apple IIe# computer logging system is used to record the epoch\ duration and peak power of all echoes with durations greater than 9[98 s and less than 1 min[ The system has been in {continuous| routine operation from March 0882 to March 0887 with occasional interruptions due to sporadic E\ troposcatter and equipment outages[ Over 1\999\999 events have been recorded and logging is continuing on a 13!h basis[ Grouping by echo type is done statistically at the data processing stage[ Using only a small fraction of the available data\ we show that this system produces valid and useful scienti_c results in spite of the fact that meteor velocities are not obtained[ Through computer!aided statistical analysis\ some of the milestones achieved are] "a# automatic separation of events into overdense\ transition and underdense categories\ and compilation of various statistics on these groups or some combination of them^ "b# con_rmation of a diurnal e}ect on average underdense trail durations^ "c# con_rmation of an apparent ozone depletion e}ect on the durations of overdense meteors^ "d# interpretation of an apparent peak!power and duration correlation for overdense echoes in terms of the Manning forward scattering model and "e# con_rmation "through a power spectrum analysis of hourly rates# of the presence of sporadic radiant sources of approximately 19> of half!intensity!halfwidth which exhibit a 1929) 05 day variability[ 0888 Elsevier Science Ltd[ All rights reserved[ 0[
Keyphrases
space science pergamon planetary occasional interruption long term statistical property epoch duration meteor velocity small fraction various statistic mhz u tv channel basis grouping elsevier science ltd right average underdense trail duration apparent ozone depletion ect scatter radiometeor detection automatic separation overdense meteor overdense transition day variability data processing stage using echo type apparent peak power manning forward continuous routine operation half intensity halfwidth peak power simple apple iie computer duration correlation hourly rate terrestrial meteor ux underdense category available data statistical analysis overdense echo useful scienti_c result sporadic radiant source power spectrum analysis equipment outage
