| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | plutao.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | J8LNKAN8RW/39RSEC2 |
| Repository | dpi.inpe.br/plutao/2011/06.11.14.29.51 |
| Last Update | 2011:07.25.17.27.22 (UTC) administrator |
| Metadata Repository | dpi.inpe.br/plutao/2011/06.11.14.29.52 |
| Metadata Last Update | 2018:06.05.00.01.21 (UTC) administrator |
| Secondary Key | INPE--PRE/ |
| DOI | 10.5194/angeo-29-839-2011 |
| ISSN | 0992-7689 |
| Label | lattes: 3368023405805386 3 TsurutaniEcheGonz:2011:CoMiSm |
| Citation Key | TsurutaniEcheGonz:2011:CoMiSm |
| Title | The solar and interplanetary causes of the recent minimum in geomagnetic activity (MGA23): a combination of midlatitude small coronal holes, low IMF <I>B</I><sub>Z</sub> variances, low solar wind speeds and low solar magnetic fields  |
| Project | CNPq agency PQ-300211/2008-2 FAPESP agency 2007/52533-1 2008/06650-9 |
| Year | 2011 |
| Access Date | 2024, May 17 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 2057 KiB |
| 2. Context | |
| Author | 1 Tsurutani, B. T. 2 Echer, Ezequiel 3 Gonzalez, Walter Demetrio |
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JH3D |
| Group | 1 2 DGE-CEA-INPE-MCT-BR 3 DGE-CEA-INPE-MCT-BR |
| Affiliation | 1 CALTECH, Jet Prop Lab, Pasadena, CA USA 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Author e-Mail Address | 1 2 3 gonzalez@dge.inpe.br |
| e-Mail Address | gonzalez@dge.inpe.br |
| Journal | Annales Geophysicae |
| Volume | 29 |
| Number | 5 |
| Pages | 839-849 |
| History (UTC) | 2011-06-11 17:43:48 :: lattes -> administrator :: 2011 2011-07-25 17:20:01 :: administrator -> marciana :: 2011 2011-07-25 17:27:22 :: marciana -> administrator :: 2011 2011-07-25 21:25:41 :: administrator -> marciana :: 2011 2011-08-04 14:41:00 :: marciana -> administrator :: 2011 2011-11-09 20:22:57 :: administrator -> marciana :: 2011 2011-11-10 12:59:55 :: marciana -> banon :: 2011 2011-11-23 13:37:42 :: banon -> tereza@sid.inpe.br :: 2011 2011-11-25 13:58:24 :: tereza@sid.inpe.br -> administrator :: 2011 2018-06-05 00:01:21 :: administrator -> tereza@sid.inpe.br :: 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 | Magnetospheric physics Solar wind-magnetosphere interactions ORIGIN STORMS CYCLE |
| Abstract | Minima in geomagnetic activity (MGA) at Earth at the ends of SC23 and SC22 have been identified. The two MGAs (called MGA23 and MGA22, respectively) were present in 2009 and 1997, delayed from the sunspot number minima in 2008 and 1996 by similar to 1/2-1 years. Part of the solar and interplanetary causes of the MGAs were exceptionally low solar (and thus low interplanetary) magnetic fields. Another important factor in MGA23 was the disappearance of equatorial and low latitude coronal holes and the appearance of midlatitude coronal holes. The location of the holes relative to the ecliptic plane led to low solar wind speeds and low IMF (B(z)) variances (sigma(2)(Bz)) and normalized variances (sigma(2)(Bz)/B(0)(2)) at Earth, with concomitant reduced solar wind-magnetospheric energy coupling. One result was the lowest ap indices in the history of ap recording. The results presented here are used to comment on the possible solar and interplanetary causes of the low geomagnetic activity that occurred during the Maunder Minimum. |
| Area | CEA |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDGE > The solar and... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| data URL | http://urlib.net/ibi/J8LNKAN8RW/39RSEC2 |
| zipped data URL | http://urlib.net/zip/J8LNKAN8RW/39RSEC2 |
| Language | en |
| Target File | angeo-29-839-2011.pdf |
| User Group | administrator banon lattes marciana tereza@sid.inpe.br |
| Visibility | shown |
| Archiving Policy | allowpublisher allowfinaldraft |
| Read Permission | allow from all |
| Update Permission | not transferred |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3EU29DP |
| Citing Item List | sid.inpe.br/bibdigital/2013/10.01.22.11 1 sid.inpe.br/mtc-m21/2012/07.13.14.45.47 1 |
| Dissemination | WEBSCI; PORTALCAPES; MGA; COMPENDEX. |
| Host Collection | dpi.inpe.br/plutao@80/2008/08.19.15.01 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel format isbn lineage mark mirrorrepository month nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress readergroup rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url |
| 7. Description control | |
| e-Mail (login) | tereza@sid.inpe.br |
| update | |