Umeå universitets logga

umu.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Fast Earthward Convection in the Magnetotail and Nonzero IMF By: MMS Statistics
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för fysik. Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China.ORCID-id: 0000-0002-5681-0366
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för fysik.ORCID-id: 0000-0002-5851-646x
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för fysik.ORCID-id: 0000-0002-2043-4442
Space and Plasma Physics, School of Electrical Engineering and Computer Science, Royal Institute of Technology, Stockholm, Sweden.
Visa övriga samt affilieringar
2023 (Engelska)Ingår i: Journal of Geophysical Research - Space Physics, ISSN 2169-9380, E-ISSN 2169-9402, Vol. 128, nr 12, artikel-id e2023JA031593Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

We statistically investigate convective earthward fast flows using data measured by the Magnetospheric Multiscale mission in the tail plasma sheet during 2017–2021. We focus on “frozen in” fast flows and investigate the importance of different electric field components in the Sun-Earth (V⊥x) and dusk-dawn (V⊥y) velocity components perpendicular to the magnetic field. We find that a majority of the fast flow events (52% of 429) have the north-south electric field component (Ez) as the most relevant or dominating component whereas 26% are so-called conventional type fast flows with Ey and Ex as the relevant components. The rest of the flow events, 22%, fall into the two ’mixed’ categories, of which almost all these fast flows, 20% of 429, have Ey and Ez important for V⊥x and V⊥y, respectively. There is no Y-location preference for any type of the fast flows. The conventional fast flows are detected rather close to the neutral sheet whereas the other types can be measured farther away. Typical total speeds are highest in the mixed category. Typical perpendicular speeds are comparably high in the conventional and mixed categories. The slowest fast flows are measured in the Ez category. Most of the fast flow events are measured in the substorm recovery phase. Prevailing interplanetary magnetic field By conditions influence the V⊥y direction and the influence is most efficient for the Ez-dominated fast flows.

Ort, förlag, år, upplaga, sidor
American Geophysical Union (AGU) , 2023. Vol. 128, nr 12, artikel-id e2023JA031593
Nationell ämneskategori
Fusion, plasma och rymdfysik Astronomi, astrofysik och kosmologi
Identifikatorer
URN: urn:nbn:se:umu:diva-218880DOI: 10.1029/2023JA031593Scopus ID: 2-s2.0-85180501515OAI: oai:DiVA.org:umu-218880DiVA, id: diva2:1824137
Forskningsfinansiär
Rymdstyrelsen, 118/17Rymdstyrelsen, 271/14Rymdstyrelsen, 194/19Rymdstyrelsen, 81/17Vetenskapsrådet, 2018-03623Vetenskapsrådet, 2021-06683Finlands Akademi, 354521Tillgänglig från: 2024-01-04 Skapad: 2024-01-04 Senast uppdaterad: 2024-01-04Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextScopus

Person

Pitkänen, TimoChong, Ghai SiungHamrin, MariaSchillings, AudreyKrämer, Eva

Sök vidare i DiVA

Av författaren/redaktören
Pitkänen, TimoChong, Ghai SiungHamrin, MariaSchillings, AudreyKrämer, Eva
Av organisationen
Institutionen för fysik
I samma tidskrift
Journal of Geophysical Research - Space Physics
Fusion, plasma och rymdfysikAstronomi, astrofysik och kosmologi

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 47 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf