Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsa43a1890m&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SA43A-1890
Physics
[2442] Ionosphere / Meteor-Trail Physics, [2494] Ionosphere / Instruments And Techniques, [6245] Planetary Sciences: Solar System Objects / Meteors
Scientific paper
Solid particles entering the Earth's atmosphere produce meteors in the ionosphere, typically at 80 to 120 km altitude, but also beyond. The major process causing the meteor is the vaporization of the solid after heating by collision with the atmospheric particles; sputtering also occurs. A fraction of the material that is ablated from the entering objects re-condenses into meteoric smoke particles. Meteors are actively detected by backscattering of radar signals and they are observed, for instance, with the EISCAT (European Incoherent Scatter Scientific Association) radars. Meteor trail and headecho observations detect the ionisation that is associated with the meteor. They allow for studying the properties of the entering solid objects (dust and meteors) and the subsequent ionospheric interactions. We discuss the range of objects that can be detected with EISCAT and the capability of the measurements to find the formation of the meteoric smoke. We then consider the possibilities for measurements with the future EISCAT 3D.
Mann Ian
Pellinen-Wannberg Asta
Tjulin Anders
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