About: A microscopic and nanoscopic view of storm-time chorus.

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About: A microscopic and nanoscopic view of storm-time chorus. Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We investigate intense whistler-mode chorus emissions which occurred during the geomagnetic storm on 31 March 2001. We use multipoint measurements obtained by the Cluster spacecraft in the premidnight equatorial region outside the plasmasphere at a radial distance of 4 Earth radii (L = 4.0 - 4.2). Observed spatio-temporal variations of the direction of the Poynting flux manifest a consistent pattern: the central position of the chorus source fluctuates at time scales of minutes within 1000-2000 km of the geomagnetic equator. We demonstrate that estimates of the electromagnetic planarity can be used to characterize the extent of the source, obtaining a range of 3000-5000 km. Discrete wave packets of chorus are observed to rise in frequency between 0.13 and 0.5 of the local electron cyclotron frequency, at a rate up to 20 kHz/s, having the maximum peak amplitudes of 20 mV/m.We observe a fine structure of subpackets with large amplitudes embedded in the interior of the wave packets. This fine structure We investigate intense whistler-mode chorus emissions which occurred during the geomagnetic storm on 31 March 2001. We use multipoint measurements obtained by the Cluster spacecraft in the premidnight equatorial region outside the plasmasphere at a radial distance of 4 Earth radii (L = 4.0 - 4.2). Observed spatio-temporal variations of the direction of the Poynting flux manifest a consistent pattern: the central position of the chorus source fluctuates at time scales of minutes within 1000-2000 km of the geomagnetic equator. We demonstrate that estimates of the electromagnetic planarity can be used to characterize the extent of the source, obtaining a range of 3000-5000 km. Discrete wave packets of chorus are observed to rise in frequency between 0.13 and 0.5 of the local electron cyclotron frequency, at a rate up to 20 kHz/s, having the maximum peak amplitudes of 20 mV/m.We observe a fine structure of subpackets with large amplitudes embedded in the interior of the wave packets. This fine structure (en)
Title	A microscopic and nanoscopic view of storm-time chorus. A microscopic and nanoscopic view of storm-time chorus. (en)
skos:prefLabel	A microscopic and nanoscopic view of storm-time chorus. A microscopic and nanoscopic view of storm-time chorus. (en)
skos:notation	RIV/68378289:_____/04:04030024!RIV/2004/AV0/A04004/N
http://linked.open.../vavai/riv/strany	1;5, doi: 10.1029/20
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA202/03/0832), P(ME 650), Z(AV0Z3042911)
http://linked.open...iv/cisloPeriodika	L02801
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	Santolík, Ondřej
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky atmosféry AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	552967
http://linked.open...ai/riv/idVysledku	RIV/68378289:_____/04:04030024
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	magnetospheric physics; plasma waves and instabilities; ring current (en)
http://linked.open.../riv/klicoveSlovo	magnetospheric physics ring current plasma waves and instabilities
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[F17506C68194]
http://linked.open...i/riv/nazevZdroje	Geophysical Research Letters
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	http://linked.opendata.cz/resource/domain/vavai/projekt/ME%20650 Investigation of propagation and nonlinear interactions of waves in plasmas
http://linked.open...UplatneniVysledku	2004
http://linked.open...v/svazekPeriodika	31
http://linked.open...iv/tvurceVysledku	Parrot, M. Santolík, Ondřej Gurnett, D. A. Pickett, J. S. Cornilleau-Wehrlin, N.
http://linked.open...n/vavai/riv/zamer	Investigations of selected processes in the Earth's atmosphere
issn	0094-8276
number of pages	5 (xsd:int)

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