SwePub
Sök i LIBRIS databas

  Utökad sökning

onr:"swepub:oai:DiVA.org:kth-18097"
 

Sökning: onr:"swepub:oai:DiVA.org:kth-18097" > Plasma transport al...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00004298naa a2200661 4500
001oai:DiVA.org:kth-18097
003SwePub
008100805s2008 | |||||||||||000 ||eng|
009oai:DiVA.org:uu-149290
024a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-180972 URI
024a https://doi.org/10.5194/angeo-26-3279-20082 DOI
024a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-1492902 URI
040 a (SwePub)kthd (SwePub)uu
041 a engb engb -1
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Kullen, A.u Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)ankul516
2451 0a Plasma transport along discrete auroral arcs and its contribution to the ionospheric plasma convection
264 c 2008-10-21
264 1b Copernicus GmbH,c 2008
338 a print2 rdacarrier
500 a QC 20100525
520 a The role of intense high-altitude electric field (E-field) peaks for large-scale plasma convection is investigated with the help of Cluster E-field, B-field and density data. The study covers 32 E-field events between 4 and 7 R-E geocentric distance, with E-field magnitudes in the range 500 1000 mV/m when mapped to ionospheric altitude. We focus on E-field structures above the ionosphere that are typically coupled to discrete auroral arcs and their return current region. Connected to such E-field peaks are rapid plasma flows directed along the discrete arcs in opposite directions on each side of the arc. Nearly all the E-field events occur during active times. A strong dependence on different substorm phases is found: a majority of intense E-field events appearing during substorm expansion or maximum phase are located on the night-side oval, while most recovery events occur on the dusk-to-dayside part of the oval. For most expansion and maximum phase cases, the average background plasma flow is in the sunward direction. For a majority of recovery events, the flow is in the anti-sunward direction. The net plasma flux connected to a strong E-field peak is in two thirds of the cases in the same direction as the background plasma flow. However, in only one third of the cases the strong flux caused by an E-field peak makes an important contribution to the plasma transport within the boundary plasma sheet. For a majority of events, the area covered by rapid plasma flows above discrete arcs is too small to have an effect on the global convection. This questions the role of discrete auroral arcs as major driver of plasma convection.
520 a 
650 7a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng
653 a Ionosphere
653 a Auroral ionosphere
653 a Electric fields and currents
653 a Planetary
653 a ionospheres
653 a interplanetary magnetic field
653 a latitude boundary-layer
653 a electric-fields
653 a low-altitude
653 a particle-acceleration
653 a reversal
653 a boundaries
653 a cluster
653 a precipitation
653 a magnetosphere
653 a sheet
653 a Physics
700a Buchert, Stephanu Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)stbuc254
700a Karlsson, Tomasu KTH,Rymd- och plasmafysik4 aut0 (Swepub:kth)u154ti5p
700a Johansson, T.4 aut
700a Lileo, S.4 aut
700a Eriksson, Andersu Uppsala universitet,KTH,Strukturmekanik,Institutet för rymdfysik, Uppsalaavdelningen4 aut0 (Swepub:uu)andeerik
700a Nilsson, H.4 aut
700a Marchaudon, A.4 aut
700a Fazakerley, A. N.4 aut
710a Uppsala universitetb Institutet för rymdfysik, Uppsalaavdelningen4 org
773t Annales Geophysicaed : Copernicus GmbHg 26:11, s. 3279-3293q 26:11<3279-3293x 0992-7689x 1432-0576
856u https://www.ann-geophys.net/26/3279/2008/angeo-26-3279-2008.pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-18097
8564 8u https://doi.org/10.5194/angeo-26-3279-2008
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-149290

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy