File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Field-aligned currents associated with dipolarization fronts

TitleField-aligned currents associated with dipolarization fronts
Authors
Keywordsdipolarization front
Field aligned current
Issue Date2013
Citation
Geophysical Research Letters, 2013, v. 40, n. 17, p. 4503-4508 How to Cite?
AbstractCurrent densities associated with dipolarization fronts (DFs) have been calculated in the geomagnetic tail using the curlometer technique applied to high-resolution magnetic field B→ data obtained by the four Cluster spacecraft. We then use the relation b→·×B→ to characterize the behavior of field-aligned current (FAC) during 25 DF events. Our results show that the magnitude of FAC density (J//) ranges from 5 to 20 nA/m2, and they are observed in Northern and Southern Hemispheres flowing along both directions of the B→-field. The FACs have dimensions characteristic of the DFs and with region-1 current sense flowing inside the DFs and region-2 sense just in front of DF (in the Bz dips). Most of our observations come from 15 to 20 RE in the tail, different from previous statistical studies based mainly on observations made around 9-12 RE. We suggest that DFs can sustain significant FACs and appear as "wedgelets" in the early stage. Key Points The DFs sustain significant FACs and appear as wedgelets in the early stage Only the DFs with magnetic dips correspond with the region-2 sense FACs This work is case study and the calculations are more accurate ©2013. American Geophysical Union. All Rights Reserved.
Persistent Identifierhttp://hdl.handle.net/10722/334332
ISSN
2023 Impact Factor: 4.6
2023 SCImago Journal Rankings: 1.850
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSun, W. J.-
dc.contributor.authorFu, S. Y.-
dc.contributor.authorParks, G. K.-
dc.contributor.authorLiu, J.-
dc.contributor.authorYao, Z. H.-
dc.contributor.authorShi, Q. Q.-
dc.contributor.authorZong, Q. G.-
dc.contributor.authorHuang, S. Y.-
dc.contributor.authorPu, Z. Y.-
dc.contributor.authorXiao, T.-
dc.date.accessioned2023-10-20T06:47:22Z-
dc.date.available2023-10-20T06:47:22Z-
dc.date.issued2013-
dc.identifier.citationGeophysical Research Letters, 2013, v. 40, n. 17, p. 4503-4508-
dc.identifier.issn0094-8276-
dc.identifier.urihttp://hdl.handle.net/10722/334332-
dc.description.abstractCurrent densities associated with dipolarization fronts (DFs) have been calculated in the geomagnetic tail using the curlometer technique applied to high-resolution magnetic field B→ data obtained by the four Cluster spacecraft. We then use the relation b→·×B→ to characterize the behavior of field-aligned current (FAC) during 25 DF events. Our results show that the magnitude of FAC density (J//) ranges from 5 to 20 nA/m2, and they are observed in Northern and Southern Hemispheres flowing along both directions of the B→-field. The FACs have dimensions characteristic of the DFs and with region-1 current sense flowing inside the DFs and region-2 sense just in front of DF (in the Bz dips). Most of our observations come from 15 to 20 RE in the tail, different from previous statistical studies based mainly on observations made around 9-12 RE. We suggest that DFs can sustain significant FACs and appear as "wedgelets" in the early stage. Key Points The DFs sustain significant FACs and appear as wedgelets in the early stage Only the DFs with magnetic dips correspond with the region-2 sense FACs This work is case study and the calculations are more accurate ©2013. American Geophysical Union. All Rights Reserved.-
dc.languageeng-
dc.relation.ispartofGeophysical Research Letters-
dc.subjectdipolarization front-
dc.subjectField aligned current-
dc.titleField-aligned currents associated with dipolarization fronts-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/grl.50902-
dc.identifier.scopuseid_2-s2.0-84883524334-
dc.identifier.volume40-
dc.identifier.issue17-
dc.identifier.spage4503-
dc.identifier.epage4508-
dc.identifier.eissn1944-8007-
dc.identifier.isiWOS:000325490300006-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats