PENGEMBANGAN MODEL FLUKS MIKROMETEOROID DARI DATA METEOR WIND RADAR

Abstract

Developing of micrometeoroid flux model is needed to infer the characteristic of meteor flux entering Earth environment and potentially endanger satellites and spacecraft. Meteor Wind Radar (MWR), as an instrument for detecting wind of upper atmosphere dynamics, provides data of meteor influx. Analysis of Serpong's and Kototabang's MWR data showed that meteor flux depends on the position of the station relative to the ecliptic plane. The inclination from the ecliptic plane causes annual variation with the minimums around 22 March and 23 September. Meteor flux from Serpong MWR which is higher during March minimum than that during September minimum may be explained that it is due to position difference relative from meteor direction. While Kototabang station is located at (0.20 S, 100.32 E), very close to the equator, must be both minimum shows similar flux. However, due to the decrease of solar activity, minimum flux during September tends to be higher than that of March. There is also a trend that meteor flux increases as solar activity decreases from 1992-1995 and 2002 - end of 2004. Sinusoidal model of micrometeoroid flux which is combined with function of solar activity was developed to describe variation of micrometeroid flux. Anomalies from 'the ecliptic variation' and solar activity factors may indicate a non-uniform and very dynamics meteoroid distribution in space environment due to comet dust or space weather.