Propagation characteristics of lightning stepped leaders developing in charge regions and descending out of charge regions
Identifieur interne : 000299 ( Main/Exploration ); précédent : 000298; suivant : 000300Propagation characteristics of lightning stepped leaders developing in charge regions and descending out of charge regions
Auteurs : Satoru Yoshida [Japon] ; Manabu Akita [Japon] ; Takeshi Morimoto [Japon] ; Tomoo Ushio [Japon] ; Zen Kawasaki [Japon, Égypte]Source :
- Atmospheric research [ 0169-8095 ] ; 2012.
Descripteurs français
- Pascal (Inist)
- Wicri :
- geographic : Australie.
- topic : Télédétection.
English descriptors
- KwdEn :
Abstract
We conducted lightning observation campaign using VHF broadband digital interferometers (DITFs) in Darwin, Australia. We divided a stepped leader into two parts; the first part is a stepped leader propagating almost horizontally in the charge regions (ICR) of thunderclouds and the last part is a stepped leader descending out of the charge region (OCR). The VHF observation indicates that the channels of the stepped leaders OCR located by the DITFs were clearly broader than the channels of the stepped leaders ICR and dart leaders, indicating that the stepped leaders OCR descended in a heavily branched manner. High speed video camera images of a CG flash support the idea that stepped leaders OCR descend in a heavily branched manner.
Affiliations:
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Le document en format XML
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aut.</sZ></inist:fA14><country>Égypte</country><wicri:noRegion>Egypt-Japan University of Science and Technology</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Atmospheric research</title><title level="j" type="abbreviated">Atmos. res.</title><idno type="ISSN">0169-8095</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Atmospheric research</title><title level="j" type="abbreviated">Atmos. res.</title><idno type="ISSN">0169-8095</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Atmospheric electricity</term><term>Australia</term><term>Dart leader</term><term>Interferometer</term><term>Lightning</term><term>Propagation characteristic</term><term>Stepped leader</term><term>Thundercloud</term><term>remote sensing</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Caractéristique propagation</term><term>Eclair</term><term>Traceur par bonds</term><term>Interféromètre</term><term>Nuage orage</term><term>Dard traceur</term><term>Télédétection</term><term>Australie</term><term>Electricité atmosphérique</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Australie</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Télédétection</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We conducted lightning observation campaign using VHF broadband digital interferometers (DITFs) in Darwin, Australia. We divided a stepped leader into two parts; the first part is a stepped leader propagating almost horizontally in the charge regions (ICR) of thunderclouds and the last part is a stepped leader descending out of the charge region (OCR). The VHF observation indicates that the channels of the stepped leaders OCR located by the DITFs were clearly broader than the channels of the stepped leaders ICR and dart leaders, indicating that the stepped leaders OCR descended in a heavily branched manner. High speed video camera images of a CG flash support the idea that stepped leaders OCR descend in a heavily branched manner.</div></front></TEI><affiliations><list><country><li>Japon</li><li>Égypte</li></country></list><tree><country name="Japon"><noRegion><name sortKey="Yoshida, Satoru" sort="Yoshida, Satoru" uniqKey="Yoshida S" first="Satoru" last="Yoshida">Satoru Yoshida</name></noRegion><name sortKey="Akita, Manabu" sort="Akita, Manabu" uniqKey="Akita M" first="Manabu" last="Akita">Manabu Akita</name><name sortKey="Kawasaki, Zen" sort="Kawasaki, Zen" uniqKey="Kawasaki Z" first="Zen" last="Kawasaki">Zen Kawasaki</name><name sortKey="Morimoto, Takeshi" sort="Morimoto, Takeshi" uniqKey="Morimoto T" first="Takeshi" last="Morimoto">Takeshi Morimoto</name><name sortKey="Ushio, Tomoo" sort="Ushio, Tomoo" uniqKey="Ushio T" first="Tomoo" last="Ushio">Tomoo Ushio</name></country><country name="Égypte"><noRegion><name sortKey="Kawasaki, Zen" sort="Kawasaki, Zen" uniqKey="Kawasaki Z" first="Zen" last="Kawasaki">Zen Kawasaki</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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