| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m21b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 8JMKD3MGP5W34M/3FA7RG4 |
| Repository | sid.inpe.br/mtc-m21b/2013/11.27.13.22.50 |
| Last Update | 2014:03.26.13.19.01 (UTC) administrator |
| Metadata Repository | sid.inpe.br/mtc-m21b/2013/11.27.13.22.51 |
| Metadata Last Update | 2018:06.04.03.14.16 (UTC) administrator |
| DOI | 10.1002/jgra.50530 |
| ISSN | 2169-9402 |
| Label | isi 2013-11 |
| Citation Key | HajraEcheTsurGonz:2013:SoCyDe |
| Title | Solar cycle dependence of High-Intensity Long-Duration Continuous AE Activity (HILDCAA) events  |
| Project | CNPq (301233/2011-0) |
| Year | 2013 |
| Month | Sep. |
| Access Date | 2024, May 17 |
| Type of Work | journal article |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 6780 KiB |
| 2. Context | |
| Author | 1 Hajra, Rajkumar 2 Echer, Ezequiel 3 Tsurutani, Bruce T. 4 Gonzalez, Walter Demetrio |
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JH3D 3 4 8JMKD3MGP5W/3C9JJC4 |
| Group | 1 2 DGE-CEA-INPE-MCTI-GOV-BR 3 4 DGE-CEA-INPE-MCTI-GOV-BR |
| Affiliation | 1 Inst Nacl Pesquisas Espaciais, Sao Paulo, Brazil. 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 CALTECH, Jet Prop Lab, Pasadena, CA USA. 4 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Author e-Mail Address | 1 rajkumarhajra@yahoo.co.in 2 eecher@dge.inpe.br 3 4 gonzalez@dge.inpe.br |
| e-Mail Address | marcelo.pazos@inpe.br |
| Journal | Journal of Geophysical Research: Space Physics |
| Volume | 118 |
| Number | 9 |
| Pages | 5626-5638 |
| History (UTC) | 2018-06-04 03:14:16 :: administrator -> :: 2013 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Version Type | finaldraft |
| Keywords | HILDCAA Auroral activity Magnetosphere |
| Abstract | High-Intensity, Long-Duration, Continuous AE Activity (HILDCAA) events are studied using long-term geomagnetic and solar wind/interplanetary databases. We use the strict definition of a HILDCAA event, that it occurs outside of the main phase of a magnetic storm, the peak AE is >1000 nT, and the duration is at least 2 days long. One hundred thirty-three events have been identified from the AE indices in the 1975 to 2011 interval, a similar to 31/2 solar cycle span. Of the 133 events, 99 had simultaneous interplanetary data available. The overwhelmed majority (94\\%) of these latter cases were associated with high-speed solar wind stream (HSS) events. The remaining 6\\% of the cases occurred after the passage of interplanetary coronal mass ejections (ICMEs). The HSS-related events were typically associated with large interplanetary magnetic field (IMF) Bz variances. The ICME-related events were characterized by steady southward Bz intervals or low-frequency fluctuations, both of which we view as possible different interplanetary phenomena. HILDCAA events have been found to have their largest occurrence frequency in the solar cycle descending phase (similar to 6.8/year) with the second largest at solar minimum (similar to 3.5/year). The occurrence frequencies were considerably lower in the ascending phase (similar to 2.5/year) and at solar maximum (similar to 2.2/year). Thus, HILDCAAs can occur during all phases of the solar cycle, with the descending phase approximately three times more likely to have an event than at solar maximum and the ascending phase. The HILDCAA events that occurred in the declining phase and at solar minimum were >20\\% longer in duration than those in the ascending phase and solar maximum, respectively. The events during the recent solar and geomagnetic minima, 2007-2009, were, on the average, similar to 17\\% and 14\\% weaker in peak AE than the events during the previous two minima of 1995-1997 and 1985-1987, respectively. The recent minimum events were similar to 35\\% and 41\\% shorter in durations, respectively, than the events during those previous minima. The yearly occurrence of the events exhibited statistically significant correlation (>0.70) with yearly average speed and number of HSSs. No seasonal dependence of HILDCAA were noted. |
| Area | CEA |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDGE > Solar cycle dependence... |
| 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://mtc-m21b.sid.inpe.br/ibi/8JMKD3MGP5W34M/3FA7RG4 |
| zipped data URL | http://mtc-m21b.sid.inpe.br/zip/8JMKD3MGP5W34M/3FA7RG4 |
| Language | en |
| Target File | 738628_2_merged_1375274608.pdf |
| User Group | administrator marcelo.pazos@inpe.br self-uploading-INPE-MCTI-GOV-BR |
| Reader Group | administrator marcelo.pazos@inpe.br |
| Visibility | shown |
| Archiving Policy | denypublisher6 allowfinaldraft |
| Read Permission | allow from all |
| Update Permission | not transferred |
| 5. Allied materials | |
| Mirror Repository | iconet.com.br/banon/2006/11.26.21.31 |
| Next Higher Units | 8JMKD3MGPCW/3EU29DP |
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.15.01.50 3 sid.inpe.br/mtc-m21/2012/07.13.14.45.47 3 sid.inpe.br/bibdigital/2013/10.01.22.11 1 |
| Dissemination | WEBSCI; AGU; MGA; COMPENDEX; SCOPUS. |
| Host Collection | sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel format isbn lineage mark nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress rightsholder schedulinginformation secondarydate secondarykey secondarymark session shorttitle sponsor subject tertiarymark tertiarytype url |