Cluster and Double Star observations of dipolarization

R. Nakamura; W. Baumjohann; T. L. Zhang; C. M. Carr; A. Balogh; K. H. Fornacon; E. Georgescu; H. Rème; I. Dandouras; T. Takada; M. Volwerk; Y. Asano; A. Runov; H. Eichelberger; B. Klecker; C. Mouikis; L. M. Kistler; O. Amm

doi:10.5194/angeo-23-2915-2005

^*Corresponding author for this work

Austrian Academy of Sciences
Imperial College London
Technical University of Braunschweig
Max Planck Institute for Extraterrestrial Physics
Université de Toulouse
University of New Hampshire
Finnish Meteorological Institute

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

18 Scopus citations

Abstract

We studied two types of dipolarization events with different IMF conditions when Cluster and Double Star (TC-1) were located in the same local time sector: 7 August 2004, 18:00-24:00 UT, during a disturbed southward/northward IMF interval, and 14 August 2004, 21:00-24:00 UT, when the IMF was stably northward. Cluster observed dipolarization as well as fast flows during both intervals, but this was not the case for TC-1. For both events the satellites crossed near the conjugate location of the MIRACLE stations. By using multi-point analysis techniques, the direction/speed of the propagation is determined using Cluster and is then compared with the disturbances at TC-1 to discuss its spatial/temporal scale. The propagation direction of the B_Z disturbance at Cluster was mainly dawnward with a tailward component for 7 August and with a significant Earthward component for 14 August associated with fast flows. We suggest that the role of the midtail fast flows can be quite different in the dissipation process depending on the condition of the IMF and resultant configuration of the tail.

Original language	English
Pages (from-to)	2915-2920
Number of pages	6
Journal	Annales Geophysicae
Volume	23
Issue number	8
DOIs	https://doi.org/10.5194/angeo-23-2915-2005
State	Published - 8 Nov 2005
Externally published	Yes

Keywords

Magnetospheric physics (Magnetospheric configuraiton and dynamics; Magnetotail; Storms and substorms)

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10.5194/angeo-23-2915-2005

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Nakamura, R., Baumjohann, W., Zhang, T. L., Carr, C. M., Balogh, A., Fornacon, K. H., Georgescu, E., Rème, H., Dandouras, I., Takada, T., Volwerk, M., Asano, Y., Runov, A., Eichelberger, H., Klecker, B., Mouikis, C., Kistler, L. M., & Amm, O. (2005). Cluster and Double Star observations of dipolarization. Annales Geophysicae, 23(8), 2915-2920. https://doi.org/10.5194/angeo-23-2915-2005

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title = "Cluster and Double Star observations of dipolarization",

abstract = "We studied two types of dipolarization events with different IMF conditions when Cluster and Double Star (TC-1) were located in the same local time sector: 7 August 2004, 18:00-24:00 UT, during a disturbed southward/northward IMF interval, and 14 August 2004, 21:00-24:00 UT, when the IMF was stably northward. Cluster observed dipolarization as well as fast flows during both intervals, but this was not the case for TC-1. For both events the satellites crossed near the conjugate location of the MIRACLE stations. By using multi-point analysis techniques, the direction/speed of the propagation is determined using Cluster and is then compared with the disturbances at TC-1 to discuss its spatial/temporal scale. The propagation direction of the BZ disturbance at Cluster was mainly dawnward with a tailward component for 7 August and with a significant Earthward component for 14 August associated with fast flows. We suggest that the role of the midtail fast flows can be quite different in the dissipation process depending on the condition of the IMF and resultant configuration of the tail.",

keywords = "Magnetospheric physics (Magnetospheric configuraiton and dynamics; Magnetotail; Storms and substorms)",

author = "R. Nakamura and W. Baumjohann and Zhang, \{T. L.\} and Carr, \{C. M.\} and A. Balogh and Fornacon, \{K. H.\} and E. Georgescu and H. R{\`e}me and I. Dandouras and T. Takada and M. Volwerk and Y. Asano and A. Runov and H. Eichelberger and B. Klecker and C. Mouikis and Kistler, \{L. M.\} and O. Amm",

year = "2005",

month = nov,

day = "8",

doi = "10.5194/angeo-23-2915-2005",

language = "英语",

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pages = "2915--2920",

journal = "Annales Geophysicae",

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Nakamura, R, Baumjohann, W, Zhang, TL, Carr, CM, Balogh, A, Fornacon, KH, Georgescu, E, Rème, H, Dandouras, I, Takada, T, Volwerk, M, Asano, Y, Runov, A, Eichelberger, H, Klecker, B, Mouikis, C, Kistler, LM & Amm, O 2005, 'Cluster and Double Star observations of dipolarization', Annales Geophysicae, vol. 23, no. 8, pp. 2915-2920. https://doi.org/10.5194/angeo-23-2915-2005

TY - JOUR

T1 - Cluster and Double Star observations of dipolarization

AU - Nakamura, R.

AU - Baumjohann, W.

AU - Zhang, T. L.

AU - Carr, C. M.

AU - Balogh, A.

AU - Fornacon, K. H.

AU - Georgescu, E.

AU - Rème, H.

AU - Dandouras, I.

AU - Takada, T.

AU - Volwerk, M.

AU - Asano, Y.

AU - Runov, A.

AU - Eichelberger, H.

AU - Klecker, B.

AU - Mouikis, C.

AU - Kistler, L. M.

AU - Amm, O.

PY - 2005/11/8

Y1 - 2005/11/8

N2 - We studied two types of dipolarization events with different IMF conditions when Cluster and Double Star (TC-1) were located in the same local time sector: 7 August 2004, 18:00-24:00 UT, during a disturbed southward/northward IMF interval, and 14 August 2004, 21:00-24:00 UT, when the IMF was stably northward. Cluster observed dipolarization as well as fast flows during both intervals, but this was not the case for TC-1. For both events the satellites crossed near the conjugate location of the MIRACLE stations. By using multi-point analysis techniques, the direction/speed of the propagation is determined using Cluster and is then compared with the disturbances at TC-1 to discuss its spatial/temporal scale. The propagation direction of the BZ disturbance at Cluster was mainly dawnward with a tailward component for 7 August and with a significant Earthward component for 14 August associated with fast flows. We suggest that the role of the midtail fast flows can be quite different in the dissipation process depending on the condition of the IMF and resultant configuration of the tail.

AB - We studied two types of dipolarization events with different IMF conditions when Cluster and Double Star (TC-1) were located in the same local time sector: 7 August 2004, 18:00-24:00 UT, during a disturbed southward/northward IMF interval, and 14 August 2004, 21:00-24:00 UT, when the IMF was stably northward. Cluster observed dipolarization as well as fast flows during both intervals, but this was not the case for TC-1. For both events the satellites crossed near the conjugate location of the MIRACLE stations. By using multi-point analysis techniques, the direction/speed of the propagation is determined using Cluster and is then compared with the disturbances at TC-1 to discuss its spatial/temporal scale. The propagation direction of the BZ disturbance at Cluster was mainly dawnward with a tailward component for 7 August and with a significant Earthward component for 14 August associated with fast flows. We suggest that the role of the midtail fast flows can be quite different in the dissipation process depending on the condition of the IMF and resultant configuration of the tail.

KW - Magnetospheric physics (Magnetospheric configuraiton and dynamics; Magnetotail; Storms and substorms)

UR - https://www.scopus.com/pages/publications/30744452998

U2 - 10.5194/angeo-23-2915-2005

DO - 10.5194/angeo-23-2915-2005

M3 - 文章

AN - SCOPUS:30744452998

SN - 0992-7689

VL - 23

SP - 2915

EP - 2920

JO - Annales Geophysicae

JF - Annales Geophysicae

IS - 8

ER -

Cluster and Double Star observations of dipolarization

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