| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m16d.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP7W/3ARSJC8 | |||
| Repository | sid.inpe.br/mtc-m19/2011/11.24.17.07 (restricted access) | |||
| Last Update | 2011:12.20.16.34.02 (UTC) administrator | |||
| Metadata Repository | sid.inpe.br/mtc-m19/2011/11.24.17.07.35 | |||
| Metadata Last Update | 2018:06.05.04.25.03 (UTC) administrator | |||
| Secondary Key | INPE--PRE/ | |||
| DOI | 10.1029/2011JA016442 | |||
| ISSN | 0926-9851 | |||
| Citation Key | HashimotoKikuWataAbdu:2011:PoIoCu | |||
| Title | Polar-equatorial ionospheric currents driven by the region 2 field-aligned currents at the onset of substorms  | |||
| Year | 2011 | |||
| Month | Sept. | |||
| Access Date | 2024, May 04 | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 2262 KiB | |||
| 2. Context | ||||
| Author | 1 Hashimoto, K. K. 2 Kikuchi, T. 3 Watari, S. 4 Abdu, M. A. | |||
| Group | 1 2 3 4 DAE-CEA-INPE-MCT-BR | |||
| Affiliation | 1 Department of Environmental Management, Kibi International University, Takahashi, Japan 2 Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, Japan 3 National Institute of Information and Communications Technology, Koganei, Japan 4 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 hashi@kiui.ac.jp | |||
| e-Mail Address | tereza@sid.inpe.br | |||
| Journal | Journal of Applied Geophysics | |||
| Volume | 116 | |||
| Number | A09217 | |||
| History (UTC) | 2011-11-24 17:11:06 :: tereza@sid.inpe.br -> administrator :: 2011 2011-11-24 17:11:07 :: administrator -> tereza@sid.inpe.br :: 2011 2011-12-08 16:24:27 :: tereza@sid.inpe.br -> marciana :: 2011 2011-12-20 16:34:20 :: marciana -> administrator :: 2011 2012-07-15 03:00:06 :: administrator -> banon :: 2011 2012-09-26 15:28:32 :: banon -> administrator :: 2011 2018-06-05 04:25:03 :: administrator -> marciana :: 2011 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Keywords | High-latitude convection Magnetically disturbed conditions HF radar observations Electric-fields Magnetospheric substorms Expansion phase Growth-phase Penetration Signatures Transmission | |||
| Abstract | The dawn-to-dusk convection electric field increases during the growth phase of substorms, driving DP2 currents composed of two-cell current vortices in high latitude and leading to an increase in the eastward electrojet at the dayside dip equator (EEJ). During the expansion phase of substorms, electric field and currents are often reversed in direction to the normal DP2 currents at subauroral to equatorial latitudes when the convection electric field reduces abruptly. The reversed current at the dayside dip equator appears as a counterelectrojet (CEJ) and causes an equatorial enhancement of the negative bay in the afternoon sector. Conversely, the convection electric field increases during substorms as deduced from sawtooth events, causing an increase in the EEJ. In this study, by analyzing isolated substorms with magnetometer array data and SuperDARN (Super Dual Auroral Radar Network) convection maps, we deduce that the reversed electric field and currents develop at the subauroral-to-equatorial latitudes at the onset of substorms, while the convection electric field increases at auroral latitudes. These observations imply that both the region 1 and region 2 field aligned currents (R1 and R2 FACs) develop on the dayside concurrently with the current wedge responsible for the midlatitude positive bay at midnight. The substorm-associated R2 FACs are strong enough to cause the reversed current at the subauroral latitude and the CEJ at the equator. We also deduce that the dayside equatorial CEJ begins simultaneously with or even earlier than the midlatitude positive bay at midnight while the midlatitude positive bay onset is delayed by several minutes as the station departs from the midnight meridian. These observations suggest that the substorm begins with the intensification of the R2 FACs responsible for the equatorial CEJ. | |||
| Area | CEA | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAE > Polar-equatorial ionospheric currents... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| Language | en | |||
| User Group | administrator banon marciana tereza@sid.inpe.br | |||
| Visibility | shown | |||
| Archiving Policy | denypublisher denyfinaldraft24 | |||
| Read Permission | deny from all and allow from 150.163 | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Mirror Repository | sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53 | |||
| Next Higher Units | 8JMKD3MGPCW/3ETL868 | |||
| Dissemination | WEBSCI; AGU; MGA; COMPENDEX. | |||
| Host Collection | sid.inpe.br/mtc-m19@80/2009/08.21.17.02 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel format isbn label lineage mark nextedition notes orcid pages parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject targetfile tertiarymark tertiarytype typeofwork url | |||
| 7. Description control | ||||
| e-Mail (login) | marciana | |||
| update | ||||