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meteor and meteoroid

Meteor trail characteristics observed by high time resolution lidar

Meteor trail characteristics observed by high time resolution lidar

... 1382 meteor trails based on a sodium data set of ∼ 680 ...of meteor trails different from those presented in previous ...the meteoroid velocity (which controls the ratio of Na / Na + ablated); ...

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Aging comets and their meteor showers

Aging comets and their meteor showers

... the meteoroid cloud: recently- formed meteoroid trails experience little differential effects due to radiation pressure and plan- etary perturbations, and thus tend to remain concentrated in a narrow arc ...

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The Chant Meteor Procession of 1913 – Towards a Descriptive Model

The Chant Meteor Procession of 1913 – Towards a Descriptive Model

... Chant Meteor Procession, while always emphasising the slow, extended and near horizontal flight of the individual meteor clusters, rarely emphasised the brightness, and this suggests that the ...

8

Analysis of the technical biases of meteor video cameras used in the CILBO system

Analysis of the technical biases of meteor video cameras used in the CILBO system

... the meteor to the cameras can be determined, the absolute magnitude and the velocity in m s −1 can be ...ing meteoroid can be estimated (see ...the meteoroid in geocentric coordinates is deter- ...

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Radar detectability studies of slow and small zodiacal dust cloud particles. I. The case of Arecibo 430 MHz meteor head echo observations

Radar detectability studies of slow and small zodiacal dust cloud particles. I. The case of Arecibo 430 MHz meteor head echo observations

... on meteoroid mass, composition, and ...molten meteoroid (treated as a melt of metal oxides), and between the particle and surrounding vapor ...against meteor head echo ob- servations using the ...

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A double-station meteor camera set-up in the Canary Islands – CILBO

A double-station meteor camera set-up in the Canary Islands – CILBO

... Abstract. This paper describes a double-station camera set- up in the Canary Islands, called CILBO (Canary Island Long- Baseline Observatory). Image-intensified video cameras – one camera on Tenerife and one on La Palma ...

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Potential for Measurement of Mesospheric Ozone Density from Overdense Meteor Trains with a Monostatic Meteor Radar

Potential for Measurement of Mesospheric Ozone Density from Overdense Meteor Trains with a Monostatic Meteor Radar

... It is during this stage that mass loss of the meteoroid is due to the sputtering process. While particles with the lower mass limit of ~10 -15 kg and in the size range of ~10 -6 m cannot be heated efficiently to ...

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On the size and velocity distribution of cosmic dust particles entering the atmosphere

On the size and velocity distribution of cosmic dust particles entering the atmosphere

... interpret meteor head echo observations made by high- powered large-aperture (HPLA) radars, in terms of the extraterrestrial sporadic meteoroid apparent sources [Fentzke and Janches, ...incoming ...

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Formation and Past Evolution of the Meteoroid Complex of Comet 96P/Machholz

Formation and Past Evolution of the Meteoroid Complex of Comet 96P/Machholz

... All-sky Meteor Surveillance (CAMS) (Jenniskens et ...lower meteoroid geocentric speeds, and thus lower orbital semi-major axis, as compared to optical ...

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On the dynamics of meteoroid streams

On the dynamics of meteoroid streams

... of meteoroid stream evolution should aim to gradually bridge the gap with studies of cometary dust trails and ...produce meteor outbursts, in the near future the most promising results are expected from the ...

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Decay times of transitionally dense specularly reflecting meteor trails and potential chemical impact on trail lifetimes

Decay times of transitionally dense specularly reflecting meteor trails and potential chemical impact on trail lifetimes

... hypersonic meteoroid and will be important in our ...the meteor radar signature may be affected due to possible effects of early electron ...the meteoroid velocity (Öpik, 1958; Bronshten, 1983; ...

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Physical Properties Of Faint Meteors Through High-Resolution Observations

Physical Properties Of Faint Meteors Through High-Resolution Observations

... of meteoroid streams, but their orbits have dispersed enough since the initial separation from their parent body that they cannot be associated with any particular ...a meteoroid came from an asteroid, a ...

150

Meteoroid orbital element distributions at 1 AU deduced from the Harvard Radio Meteor Project observations

Meteoroid orbital element distributions at 1 AU deduced from the Harvard Radio Meteor Project observations

... Radio Meteor Project (HRMP) syn- optic year observations produced about 20,000 meteor orbits from meteoroids larger than 10 −4 g (radius ∼200 ...of meteor trails on their radar de- tectability ...

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Using Bolide Airwaves To Estimate Meteoroid Source Characteristics And Window Damage Potential

Using Bolide Airwaves To Estimate Meteoroid Source Characteristics And Window Damage Potential

... a meteor) including heat, ionization and in particular production of a ...the meteor (Edwards, ...the meteoroid suddenly fragments depositing a large fraction of its total energy over a very short ...

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Alignment based sense selection in METEOR and the RATATOUILLE recipe

Alignment based sense selection in METEOR and the RATATOUILLE recipe

... The Meteor metric evaluates translation hypothe- ses by aligning them to reference translations and calculating sentence-level similarity scores (Banerjee and Lavie, 2005; Denkowski and Lavie, ...ple, ...

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Spatial distribution of errors associated with multistatic meteor radar

Spatial distribution of errors associated with multistatic meteor radar

... To do this, we return to Fig. 1. We will consider a gen- eralized point representing any of the scatters A, B or C in the figure and calculate the distance from the transmit- ter to the scattering point and on to the ...

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Seasonal behavior of meteor radar winds over Wuhan

Seasonal behavior of meteor radar winds over Wuhan

... Over decades, ground-based and satellite-based measure- ments have greatly improved our understanding of the dy- namics of the mesosphere/lower thermosphere (MLT) re- gion, but there are still many problems unsolved and ...

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Charged dust and shock phenomena in the Solar System

Charged dust and shock phenomena in the Solar System

... To describe vapor jet we use the results of simulations (Nemtchinov et al., 1998, 1999). We consider an impact of the meteoroid of the size of 1–10 cm with the Moon surface. For an impactor body of 10 cm size and ...

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A magnetic survey of Ireland for Epoch 1959 5

A magnetic survey of Ireland for Epoch 1959 5

... heights ore given in feet above Irish Ordnance Datum.. A indicates lite of Meteor-olog'lccl Station.[r] ...

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Internal tides and energy fluxes over Great Meteor Seamount

Internal tides and energy fluxes over Great Meteor Seamount

... Abstract. Internal-tide energy fluxes are determined halfway over the southern slope of Great Meteor Seamount (Canary Basin), using data from combined CTD/LADCP yoyoing, covering the whole water column. The ...

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