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Statements

Subject Item
n2:RIV%2F00216208%3A11320%2F12%3A10130560%21RIV13-GA0-11320___
rdf:type
skos:Concept n3:Vysledek
rdfs:seeAlso
http://dx.doi.org/10.5194/angeo-30-1-2012
dcterms:description
We present multi spacecraft measurements in the magnetosheath (MSH) and in the solar wind (SW) by Interball, Cluster and Polar, demonstrating that coherent structures with magnetosonic Mach number up to 3 - Supermagnetosonic Plasma Streams (SPS) - generate transient and anomalous boundary dynamics, which may cause substantial displacements of the magnetospheric boundaries and the riddling of peripheral boundary layers. In this regard, for the first time, we describe a direct plasma penetration into the flank boundary layers, which is a candidate for being the dominant transport mechanism for disturbed MSH periods. Typically SPS's have a ram pressure exceeding by several times that of the SW and lead to long-range correlations between processes at the bow shock (BS) and at the magnetopause (MP) on one side and between MSH and MP boundary layers on the other side. We demonstrate that SPS's can be observed both near the BS and near the MP and argue that they are often triggered by hot flow anomalies (HFA), which represent local obstacles to the SW flow and can induce the SPS generation as a means for achieving a local flow balance. Finally, we also discuss other causes of SPS's, both SW-induced and intrinsic to the MSH. SPS's appear to be universal means for establishing a new equilibrium between flowing plasmas and may also prove to be important for astrophysical and fusion applications. We present multi spacecraft measurements in the magnetosheath (MSH) and in the solar wind (SW) by Interball, Cluster and Polar, demonstrating that coherent structures with magnetosonic Mach number up to 3 - Supermagnetosonic Plasma Streams (SPS) - generate transient and anomalous boundary dynamics, which may cause substantial displacements of the magnetospheric boundaries and the riddling of peripheral boundary layers. In this regard, for the first time, we describe a direct plasma penetration into the flank boundary layers, which is a candidate for being the dominant transport mechanism for disturbed MSH periods. Typically SPS's have a ram pressure exceeding by several times that of the SW and lead to long-range correlations between processes at the bow shock (BS) and at the magnetopause (MP) on one side and between MSH and MP boundary layers on the other side. We demonstrate that SPS's can be observed both near the BS and near the MP and argue that they are often triggered by hot flow anomalies (HFA), which represent local obstacles to the SW flow and can induce the SPS generation as a means for achieving a local flow balance. Finally, we also discuss other causes of SPS's, both SW-induced and intrinsic to the MSH. SPS's appear to be universal means for establishing a new equilibrium between flowing plasmas and may also prove to be important for astrophysical and fusion applications.
dcterms:title
Super fast plasma streams as drivers of transient and anomalous magnetospheric dynamics Super fast plasma streams as drivers of transient and anomalous magnetospheric dynamics
skos:prefLabel
Super fast plasma streams as drivers of transient and anomalous magnetospheric dynamics Super fast plasma streams as drivers of transient and anomalous magnetospheric dynamics
skos:notation
RIV/00216208:11320/12:10130560!RIV13-GA0-11320___
n3:predkladatel
n4:orjk%3A11320
n5:aktivita
n11:Z n11:P
n5:aktivity
P(GA205/09/0112), P(ME09106), Z(MSM0021620860)
n5:cisloPeriodika
1
n5:dodaniDat
n21:2013
n5:domaciTvurceVysledku
n8:5876265 n8:1504126
n5:druhVysledku
n19:J
n5:duvernostUdaju
n17:S
n5:entitaPredkladatele
n16:predkladatel
n5:idSjednocenehoVysledku
172450
n5:idVysledku
RIV/00216208:11320/12:10130560
n5:jazykVysledku
n22:eng
n5:klicovaSlova
Solar wind-magnetosphere interactions; Magnetosheath; Magnetopause, cusp and boundary layers; Magnetospheric physics
n5:klicoveSlovo
n13:cusp%20and%20boundary%20layers n13:Magnetopause n13:Magnetosheath n13:Magnetospheric%20physics n13:Solar%20wind-magnetosphere%20interactions
n5:kodStatuVydavatele
DE - Spolková republika Německo
n5:kontrolniKodProRIV
[D112502AA2A9]
n5:nazevZdroje
Annales Geophysicae
n5:obor
n20:BL
n5:pocetDomacichTvurcuVysledku
2
n5:pocetTvurcuVysledku
15
n5:projekt
n9:ME09106 n9:GA205%2F09%2F0112
n5:rokUplatneniVysledku
n21:2012
n5:svazekPeriodika
30
n5:tvurceVysledku
Skalsky, A. Zelenyi, L. Amata, E. Němeček, Zdeněk Savin, S. Daly, P. W. Lutsenko, V. Lezhen, L. Budaev, V. Blecki, J. Šafránková, Jana Buechner, J. Kozak, L. Borodkova, N. Kronberg, E. A.
n5:wos
000300230100001
n5:zamer
n18:MSM0021620860
s:issn
0992-7689
s:numberOfPages
7
n12:doi
10.5194/angeo-30-1-2012
n15:organizacniJednotka
11320