Signatures of meteor showers and sporadics inferred from the height distribution of meteor echoes

Standard

Signatures of meteor showers and sporadics inferred from the height distribution of meteor echoes. / Lukianova, Renata; Kozlovsky, Alexander; Lester, Mark.

In: Planetary and Space Science, Vol. 189, 104981, 15.09.2020.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{0d27e5b0ca264392b20d1545a3ba497c,

title = "Signatures of meteor showers and sporadics inferred from the height distribution of meteor echoes",

abstract = "The SKYiMET meteor radar is capable of measuring the height distribution of ionized meteor trails. Observations of the Sodankyla radar (67°N, 23°E) in 2008–2019 are analyzed. A method is applied, based on the median and quartiles of meteor heights, for distinguishing meteor showers from much more intense background sporadic meteors. Since the shower meteors are commonly less dense and enter the Earth's atmosphere at a larger velocity, they produce ionization up to 3 km higher than sporadic meteors. This effect manifests itself in the form of narrow peaks that are clearly visible in the median and quartiles of the meteor height. Seven established showers with zenith hourly rate (ZHR) > 12 were identified. In addition, using both the height parameters and the radiant distribution, a signature of a former meteor stream evolving into sporadic meteors is found. This additional sporadic inflow has an antihelion source and occurs in the January.",

keywords = "Height profile of meteor echoes, Meteor radar, Meteor shower, Radiant distribution of meteors, Sporadic meteors",

author = "Renata Lukianova and Alexander Kozlovsky and Mark Lester",

note = "Funding Information: The data of the meteor radar were collected at SGO ( http://www.sgo.fi/ ). RL acknowledges support from the Academy of Finland via grant 310348 . Authors acknowledge discussions within the International Space Science Institute (ISSI) Team 410 on New Features in the Meteor Radar Observations and Applications for Space Research. ML acknowledges support from the Science and Technolgy Facilities Council ( STFC ) grant ST/S000429/1 . Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

month = sep,

day = "15",

doi = "10.1016/j.pss.2020.104981",

language = "English",

volume = "189",

journal = "Planetary and Space Science",

issn = "0032-0633",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Signatures of meteor showers and sporadics inferred from the height distribution of meteor echoes

AU - Lukianova, Renata

AU - Kozlovsky, Alexander

AU - Lester, Mark

N1 - Funding Information: The data of the meteor radar were collected at SGO ( http://www.sgo.fi/ ). RL acknowledges support from the Academy of Finland via grant 310348 . Authors acknowledge discussions within the International Space Science Institute (ISSI) Team 410 on New Features in the Meteor Radar Observations and Applications for Space Research. ML acknowledges support from the Science and Technolgy Facilities Council ( STFC ) grant ST/S000429/1 . Publisher Copyright: © 2020 Elsevier Ltd Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/9/15

Y1 - 2020/9/15

N2 - The SKYiMET meteor radar is capable of measuring the height distribution of ionized meteor trails. Observations of the Sodankyla radar (67°N, 23°E) in 2008–2019 are analyzed. A method is applied, based on the median and quartiles of meteor heights, for distinguishing meteor showers from much more intense background sporadic meteors. Since the shower meteors are commonly less dense and enter the Earth's atmosphere at a larger velocity, they produce ionization up to 3 km higher than sporadic meteors. This effect manifests itself in the form of narrow peaks that are clearly visible in the median and quartiles of the meteor height. Seven established showers with zenith hourly rate (ZHR) > 12 were identified. In addition, using both the height parameters and the radiant distribution, a signature of a former meteor stream evolving into sporadic meteors is found. This additional sporadic inflow has an antihelion source and occurs in the January.

AB - The SKYiMET meteor radar is capable of measuring the height distribution of ionized meteor trails. Observations of the Sodankyla radar (67°N, 23°E) in 2008–2019 are analyzed. A method is applied, based on the median and quartiles of meteor heights, for distinguishing meteor showers from much more intense background sporadic meteors. Since the shower meteors are commonly less dense and enter the Earth's atmosphere at a larger velocity, they produce ionization up to 3 km higher than sporadic meteors. This effect manifests itself in the form of narrow peaks that are clearly visible in the median and quartiles of the meteor height. Seven established showers with zenith hourly rate (ZHR) > 12 were identified. In addition, using both the height parameters and the radiant distribution, a signature of a former meteor stream evolving into sporadic meteors is found. This additional sporadic inflow has an antihelion source and occurs in the January.

KW - Height profile of meteor echoes

KW - Meteor radar

KW - Meteor shower

KW - Radiant distribution of meteors

KW - Sporadic meteors

UR - http://www.scopus.com/inward/record.url?scp=85085662518&partnerID=8YFLogxK

U2 - 10.1016/j.pss.2020.104981

DO - 10.1016/j.pss.2020.104981

M3 - Article

AN - SCOPUS:85085662518

VL - 189

JO - Planetary and Space Science

JF - Planetary and Space Science

SN - 0032-0633

M1 - 104981

ER -

ID: 71842108