Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Modulation of the substorm current wedge by bursty bulk flows: 8 September 2002-Revisited. / Palin, L.; Opgenoorth, H.J.; gren, K.; Zivkovic, T.; Sergeev, V.A.; Kubyshkina, M.V.; Nikolaev, A.; Kauristie, K.; van de Kamp, M.; Amm, O.; Milan, S.E.; Imber, S.M.; Facskó, G.; Palmroth, M.; Nakamura, R.
в: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2016, стр. 4466-4482.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Modulation of the substorm current wedge by bursty bulk flows: 8 September 2002-Revisited
AU - Palin, L.
AU - Opgenoorth, H.J.
AU - gren, K.
AU - Zivkovic, T.
AU - Sergeev, V.A.
AU - Kubyshkina, M.V.
AU - Nikolaev, A.
AU - Kauristie, K.
AU - van de Kamp, M.
AU - Amm, O.
AU - Milan, S.E.
AU - Imber, S.M.
AU - Facskó, G.
AU - Palmroth, M.
AU - Nakamura, R.
PY - 2016
Y1 - 2016
N2 - © 2016. American Geophysical Union. All Rights Reserved.The ultimate formation mechanism of the substorm current wedge (SCW) remains to date unclear. In this study, we investigate its relationship to plasma flows at substorm onset and throughout the following expansion phase. We revisit the case of 8 September 2002, which has been defined as "one of the best textbook examples of a substorm" because of its excellent coverage by both spacecraft in the magnetotail and ground-based observatories. We found that a dense sequence of arrival of nightside flux transfer events (NFTEs; which can be understood as the lobe magnetic signature due to a bursty bulk flow travelling earthward in the central plasma sheet) in the near-Earth tail leads to a modulation (and further step-like builtup) of the SCW intensity during the substorm expansion phase. In addition, we found that small SCWs are created also during the growth phase of the event in association with another less intense sequence of NFTEs. The differences between
AB - © 2016. American Geophysical Union. All Rights Reserved.The ultimate formation mechanism of the substorm current wedge (SCW) remains to date unclear. In this study, we investigate its relationship to plasma flows at substorm onset and throughout the following expansion phase. We revisit the case of 8 September 2002, which has been defined as "one of the best textbook examples of a substorm" because of its excellent coverage by both spacecraft in the magnetotail and ground-based observatories. We found that a dense sequence of arrival of nightside flux transfer events (NFTEs; which can be understood as the lobe magnetic signature due to a bursty bulk flow travelling earthward in the central plasma sheet) in the near-Earth tail leads to a modulation (and further step-like builtup) of the SCW intensity during the substorm expansion phase. In addition, we found that small SCWs are created also during the growth phase of the event in association with another less intense sequence of NFTEs. The differences between
U2 - 10.1002/2015JA022262
DO - 10.1002/2015JA022262
M3 - Article
SP - 4466
EP - 4482
JO - Journal of Geophysical Research: Biogeosciences
JF - Journal of Geophysical Research: Biogeosciences
SN - 0148-0227
ER -
ID: 7927896