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Multiscale Currents Observed by MMS in the Flow Braking Region. / Nakamura, Rumi; Varsani, Ali; Genestreti, Kevin J.; Le Contel, Olivier; Nakamura, Takuma; Baumjohann, Wolfgang; Nagai, Tsugunobu; Artemyev, Anton; Birn, Joachim; Sergeev, Victor A.; Apatenkov, Sergey; Ergun, Robert E.; Fuselier, Stephen A.; Gershman, Daniel J.; Giles, Barbara J.; Khotyaintsev, Yuri V.; Lindqvist, Per Arne; Magnes, Werner; Mauk, Barry; Petrukovich, Anatoli; Russell, Christopher T.; Stawarz, Julia; Strangeway, Robert J.; Anderson, Brian; Burch, James L.; Bromund, Ken R.; Cohen, Ian; Fischer, David; Jaynes, Allison; Kepko, Laurence; Le, Guan; Plaschke, Ferdinand; Reeves, Geoff; Singer, Howard J.; Slavin, James A.; Torbert, Roy B.; Turner, Drew L.

In: Journal of Geophysical Research: Space Physics, Vol. 123, No. 2, 01.02.2018, p. 1260-1278.

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

Harvard

Nakamura, R, Varsani, A, Genestreti, KJ, Le Contel, O, Nakamura, T, Baumjohann, W, Nagai, T, Artemyev, A, Birn, J, Sergeev, VA, Apatenkov, S, Ergun, RE, Fuselier, SA, Gershman, DJ, Giles, BJ, Khotyaintsev, YV, Lindqvist, PA, Magnes, W, Mauk, B, Petrukovich, A, Russell, CT, Stawarz, J, Strangeway, RJ, Anderson, B, Burch, JL, Bromund, KR, Cohen, I, Fischer, D, Jaynes, A, Kepko, L, Le, G, Plaschke, F, Reeves, G, Singer, HJ, Slavin, JA, Torbert, RB & Turner, DL 2018, 'Multiscale Currents Observed by MMS in the Flow Braking Region', Journal of Geophysical Research: Space Physics, vol. 123, no. 2, pp. 1260-1278. https://doi.org/10.1002/2017JA024686

APA

Nakamura, R., Varsani, A., Genestreti, K. J., Le Contel, O., Nakamura, T., Baumjohann, W., Nagai, T., Artemyev, A., Birn, J., Sergeev, V. A., Apatenkov, S., Ergun, R. E., Fuselier, S. A., Gershman, D. J., Giles, B. J., Khotyaintsev, Y. V., Lindqvist, P. A., Magnes, W., Mauk, B., ... Turner, D. L. (2018). Multiscale Currents Observed by MMS in the Flow Braking Region. Journal of Geophysical Research: Space Physics, 123(2), 1260-1278. https://doi.org/10.1002/2017JA024686

Vancouver

Nakamura R, Varsani A, Genestreti KJ, Le Contel O, Nakamura T, Baumjohann W et al. Multiscale Currents Observed by MMS in the Flow Braking Region. Journal of Geophysical Research: Space Physics. 2018 Feb 1;123(2):1260-1278. https://doi.org/10.1002/2017JA024686

Author

Nakamura, Rumi ; Varsani, Ali ; Genestreti, Kevin J. ; Le Contel, Olivier ; Nakamura, Takuma ; Baumjohann, Wolfgang ; Nagai, Tsugunobu ; Artemyev, Anton ; Birn, Joachim ; Sergeev, Victor A. ; Apatenkov, Sergey ; Ergun, Robert E. ; Fuselier, Stephen A. ; Gershman, Daniel J. ; Giles, Barbara J. ; Khotyaintsev, Yuri V. ; Lindqvist, Per Arne ; Magnes, Werner ; Mauk, Barry ; Petrukovich, Anatoli ; Russell, Christopher T. ; Stawarz, Julia ; Strangeway, Robert J. ; Anderson, Brian ; Burch, James L. ; Bromund, Ken R. ; Cohen, Ian ; Fischer, David ; Jaynes, Allison ; Kepko, Laurence ; Le, Guan ; Plaschke, Ferdinand ; Reeves, Geoff ; Singer, Howard J. ; Slavin, James A. ; Torbert, Roy B. ; Turner, Drew L. / Multiscale Currents Observed by MMS in the Flow Braking Region. In: Journal of Geophysical Research: Space Physics. 2018 ; Vol. 123, No. 2. pp. 1260-1278.

BibTeX

@article{28fbe2dbf2384bc38fd2590163a4bf1f,
title = "Multiscale Currents Observed by MMS in the Flow Braking Region",
abstract = "We present characteristics of current layers in the off-equatorial near-Earth plasma sheet boundary observed with high time-resolution measurements from the Magnetospheric Multiscale mission during an intense substorm associated with multiple dipolarizations. The four Magnetospheric Multiscale spacecraft, separated by distances of about 50 km, were located in the southern hemisphere in the dusk portion of a substorm current wedge. They observed fast flow disturbances (up to about 500 km/s), most intense in the dawn-dusk direction. Field-aligned currents were observed initially within the expanding plasma sheet, where the flow and field disturbances showed the distinct pattern expected in the braking region of localized flows. Subsequently, intense thin field-aligned current layers were detected at the inner boundary of equatorward moving flux tubes together with Earthward streaming hot ions. Intense Hall current layers were found adjacent to the field-aligned currents. In particular, we found a Hall current structure in the vicinity of the Earthward streaming ion jet that consisted of mixed ion components, that is, hot unmagnetized ions, cold ExB drifting ions, and magnetized electrons. Our observations show that both the near-Earth plasma jet diversion and the thin Hall current layers formed around the reconnection jet boundary are the sites where diversion of the perpendicular currents take place that contribute to the observed field-aligned current pattern as predicted by simulations of reconnection jets. Hence, multiscale structure of flow braking is preserved in the field-aligned currents in the off-equatorial plasma sheet and is also translated to ionosphere to become a part of the substorm field-aligned current system.",
keywords = "field-aligned current, flow braking, magnetic reconnection, Magnetospheric Multiscale (MMS), plasma sheet boundary, MAGNETIC RECONNECTION, RAPID FLUX TRANSPORT, MAGNETOSPHERIC MULTISCALE, ACCELERATION, DISTRIBUTIONS, DIPOLARIZATION FRONTS, ELECTRIC-FIELDS, DYNAMICS, PLASMA SHEET, MAGNETOTAIL",
author = "Rumi Nakamura and Ali Varsani and Genestreti, {Kevin J.} and {Le Contel}, Olivier and Takuma Nakamura and Wolfgang Baumjohann and Tsugunobu Nagai and Anton Artemyev and Joachim Birn and Sergeev, {Victor A.} and Sergey Apatenkov and Ergun, {Robert E.} and Fuselier, {Stephen A.} and Gershman, {Daniel J.} and Giles, {Barbara J.} and Khotyaintsev, {Yuri V.} and Lindqvist, {Per Arne} and Werner Magnes and Barry Mauk and Anatoli Petrukovich and Russell, {Christopher T.} and Julia Stawarz and Strangeway, {Robert J.} and Brian Anderson and Burch, {James L.} and Bromund, {Ken R.} and Ian Cohen and David Fischer and Allison Jaynes and Laurence Kepko and Guan Le and Ferdinand Plaschke and Geoff Reeves and Singer, {Howard J.} and Slavin, {James A.} and Torbert, {Roy B.} and Turner, {Drew L.}",
year = "2018",
month = feb,
day = "1",
doi = "10.1002/2017JA024686",
language = "English",
volume = "123",
pages = "1260--1278",
journal = "Journal of Geophysical Research: Biogeosciences",
issn = "0148-0227",
publisher = "American Geophysical Union",
number = "2",

}

RIS

TY - JOUR

T1 - Multiscale Currents Observed by MMS in the Flow Braking Region

AU - Nakamura, Rumi

AU - Varsani, Ali

AU - Genestreti, Kevin J.

AU - Le Contel, Olivier

AU - Nakamura, Takuma

AU - Baumjohann, Wolfgang

AU - Nagai, Tsugunobu

AU - Artemyev, Anton

AU - Birn, Joachim

AU - Sergeev, Victor A.

AU - Apatenkov, Sergey

AU - Ergun, Robert E.

AU - Fuselier, Stephen A.

AU - Gershman, Daniel J.

AU - Giles, Barbara J.

AU - Khotyaintsev, Yuri V.

AU - Lindqvist, Per Arne

AU - Magnes, Werner

AU - Mauk, Barry

AU - Petrukovich, Anatoli

AU - Russell, Christopher T.

AU - Stawarz, Julia

AU - Strangeway, Robert J.

AU - Anderson, Brian

AU - Burch, James L.

AU - Bromund, Ken R.

AU - Cohen, Ian

AU - Fischer, David

AU - Jaynes, Allison

AU - Kepko, Laurence

AU - Le, Guan

AU - Plaschke, Ferdinand

AU - Reeves, Geoff

AU - Singer, Howard J.

AU - Slavin, James A.

AU - Torbert, Roy B.

AU - Turner, Drew L.

PY - 2018/2/1

Y1 - 2018/2/1

N2 - We present characteristics of current layers in the off-equatorial near-Earth plasma sheet boundary observed with high time-resolution measurements from the Magnetospheric Multiscale mission during an intense substorm associated with multiple dipolarizations. The four Magnetospheric Multiscale spacecraft, separated by distances of about 50 km, were located in the southern hemisphere in the dusk portion of a substorm current wedge. They observed fast flow disturbances (up to about 500 km/s), most intense in the dawn-dusk direction. Field-aligned currents were observed initially within the expanding plasma sheet, where the flow and field disturbances showed the distinct pattern expected in the braking region of localized flows. Subsequently, intense thin field-aligned current layers were detected at the inner boundary of equatorward moving flux tubes together with Earthward streaming hot ions. Intense Hall current layers were found adjacent to the field-aligned currents. In particular, we found a Hall current structure in the vicinity of the Earthward streaming ion jet that consisted of mixed ion components, that is, hot unmagnetized ions, cold ExB drifting ions, and magnetized electrons. Our observations show that both the near-Earth plasma jet diversion and the thin Hall current layers formed around the reconnection jet boundary are the sites where diversion of the perpendicular currents take place that contribute to the observed field-aligned current pattern as predicted by simulations of reconnection jets. Hence, multiscale structure of flow braking is preserved in the field-aligned currents in the off-equatorial plasma sheet and is also translated to ionosphere to become a part of the substorm field-aligned current system.

AB - We present characteristics of current layers in the off-equatorial near-Earth plasma sheet boundary observed with high time-resolution measurements from the Magnetospheric Multiscale mission during an intense substorm associated with multiple dipolarizations. The four Magnetospheric Multiscale spacecraft, separated by distances of about 50 km, were located in the southern hemisphere in the dusk portion of a substorm current wedge. They observed fast flow disturbances (up to about 500 km/s), most intense in the dawn-dusk direction. Field-aligned currents were observed initially within the expanding plasma sheet, where the flow and field disturbances showed the distinct pattern expected in the braking region of localized flows. Subsequently, intense thin field-aligned current layers were detected at the inner boundary of equatorward moving flux tubes together with Earthward streaming hot ions. Intense Hall current layers were found adjacent to the field-aligned currents. In particular, we found a Hall current structure in the vicinity of the Earthward streaming ion jet that consisted of mixed ion components, that is, hot unmagnetized ions, cold ExB drifting ions, and magnetized electrons. Our observations show that both the near-Earth plasma jet diversion and the thin Hall current layers formed around the reconnection jet boundary are the sites where diversion of the perpendicular currents take place that contribute to the observed field-aligned current pattern as predicted by simulations of reconnection jets. Hence, multiscale structure of flow braking is preserved in the field-aligned currents in the off-equatorial plasma sheet and is also translated to ionosphere to become a part of the substorm field-aligned current system.

KW - field-aligned current

KW - flow braking

KW - magnetic reconnection

KW - Magnetospheric Multiscale (MMS)

KW - plasma sheet boundary

KW - MAGNETIC RECONNECTION

KW - RAPID FLUX TRANSPORT

KW - MAGNETOSPHERIC MULTISCALE

KW - ACCELERATION

KW - DISTRIBUTIONS

KW - DIPOLARIZATION FRONTS

KW - ELECTRIC-FIELDS

KW - DYNAMICS

KW - PLASMA SHEET

KW - MAGNETOTAIL

UR - http://www.scopus.com/inward/record.url?scp=85042177325&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/multiscale-currents-observed-mms-flow-braking-region

U2 - 10.1002/2017JA024686

DO - 10.1002/2017JA024686

M3 - Article

AN - SCOPUS:85042177325

VL - 123

SP - 1260

EP - 1278

JO - Journal of Geophysical Research: Biogeosciences

JF - Journal of Geophysical Research: Biogeosciences

SN - 0148-0227

IS - 2

ER -

ID: 35373117