The Micrometeor Input Function: A study using model predictions HPLA radar meteor observations

Details The Micrometeor Input Function: A study using model predictions HPLA radar meteor observations The Micrometeor Input Function: A study using model predictions HPLA radar meteor observations

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmsa31a..07j&link_type=abstract

American Geophysical Union, Spring Meeting 2008, abstract #SA31A-07

Physics

2129 Interplanetary Dust, 6015 Dust, 6245 Meteors, 6952 Radar Atmospheric Physics (1220)

Scientific paper

In this work we use a semi-empirical model of the Micrometeor Input Function (MIF) together with meteor head- echo observations obtained with two High Power and Large Aperture (HPLA) radars to study the seasonal and geographical dependence of the meteoric flux in the upper atmosphere. The model includes an initial mass flux that is provided by six known meteor sources (i.e. orbital families of dust) as well as detailed modeling of meteoroid atmospheric entry and ablation physics. In addition, we use a simple ionization model to treat radar sensitivity issues by defining minimum electron volume density production thresholds required in the meteor head-echo plasma for detection. This simplified approach works well because we use observations from two radars with similar frequencies, but different sensitivities and locations. This methodology allows us the explore the initial input of particles and how it manifests in different parts of the MLT as observed by these instruments without the need to invoke more sophisticated plasma models, which are under current development. The comparisons between model predictions and radar observations show excellent agreement between diurnal, seasonal, and latitudinal variability of the detected meteor rate and radial velocity distributions, allowing us to understand how individual meteoroid populations contribute to the overall flux at a particular location and season.

Affiliated with

Also associated with

No associations

Rating

The Micrometeor Input Function: A study using model predictions HPLA radar meteor observations 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 The Micrometeor Input Function: A study using model predictions HPLA radar meteor observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Micrometeor Input Function: A study using model predictions HPLA radar meteor observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1398265