The Hyperthermal Ionization and High Absolute Meteor Velocities Observed with HPLA Radars

Pellinen‐Wannberg, Asta; Murad, Edmond; Wannberg, G.; Westman, Assar

doi:10.1007/1-4020-5075-5_58

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…It is much harder to resolve the fast Fresnel oscillations of the faster meteors with the employed effective PRF. On the other side are the head echo measurements biased due to a cut off altitude given by the required plasma density to observe the head echo Pellinen-Wannberg et al, 2004). The efficiency of the plasma production depends on velocity and mass, which makes it harder for meteoroids traveling at "slower" velocities (< 30 km s −1 ) to reach the critical plasma density to be detected by the HPLA.…”

Section: Meteor Head Echoesmentioning

confidence: 99%

The Geminid meteor shower during the ECOMA sounding rocket campaign: specular and head echo radar observations

et al. 2013

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The ECOMA (Existence of Charge state Of meteoric smoke particles in the Middle Atmosphere) sounding rocket campaign was conducted during the Geminid meteor shower in December 2010 in order to explore whether there is a change of the properties of meteoric smoke particles due to the stream. In parallel to the rocket flights, three radars monitored the Geminid activity located at the launch site in Northern Norway and in Northern Germany to gain information about the meteor flux into the atmosphere. The results presented here are based on specular meteor radar observations measuring the radiant position, the velocity and the meteor flux into the atmosphere during the Geminids. Further, the MAARSY (Middle Atmosphere Alomar Radar System) radar was operated to conduct meteor head echo experiments. The interferometric capabilities of MAARSY permit measuring the meteor trajectories within the radar beam and to determine the source radiant and geocentric meteor velocity, as well as to compute the meteor orbit

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Section: Meteor Head Echoesmentioning

confidence: 99%

The Geminid meteor shower during the ECOMA sounding rocket campaign: specular and head echo radar observations

et al. 2013

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“…Sato et al, 2000;Close and Hunt, 2000;Chau and Woodman, 2004;Pellinen-Wannberg et al, 2004;Chau and Galindo, 2008;Sparks et al, 2010;Kero et al, 2011). This technique uses the fact that the ablation process forms a detectable plasma around the meteoroid.…”

Section: Introductionmentioning

confidence: 99%

Determination of meteor-head echo trajectories using the interferometric capabilities of MAARSY

et al. 2013

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Abstract. During the flight of a meteoroid through the neutral atmosphere, the high kinetic energy is sufficient to ionize the meteoric constituents. Radar echoes coming from plasma irregularities surrounding the meteoroids are called meteor-head echoes, and can be detected by HPLA radar systems. Measurements of these echoes were conducted with MAARSY (Middle Atmosphere Alomar Radar System) in December 2010. The interferometric capabilities of the radar system permit the determination of the meteor trajectories within the radar beam with high accuracy. The received data are used to gain information about entry velocities, source radiants, observation heights and other meteoroid parameters. Our preliminary results indicate that the majority of meteors have masses between 10 −10 and 10 −3 kg and the mean masses of the sporadic meteors and Gemenids meteors are ∼ 10 −8 kg.

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The Hyperthermal Ionization and High Absolute Meteor Velocities Observed with HPLA Radars

Cited by 2 publications

References 13 publications

The Geminid meteor shower during the ECOMA sounding rocket campaign: specular and head echo radar observations

The Geminid meteor shower during the ECOMA sounding rocket campaign: specular and head echo radar observations

Determination of meteor-head echo trajectories using the interferometric capabilities of MAARSY

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