| 1. Identity statement | |
| Reference Type | Conference Paper (Conference Proceedings) |
| Site | mtc-m16.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repository | sid.inpe.br/marciana/2005/01.03.16.02 |
| Last Update | 2005:02.25.03.00.00 (UTC) administrator |
| Metadata Repository | sid.inpe.br/marciana/2005/01.03.16.02.05 |
| Metadata Last Update | 2018:06.05.01.21.20 (UTC) administrator |
| Secondary Key | INPE-12216-PRE/7550 |
| Citation Key | DenardiniAbduSobr:2004:SeDiVa |
| Title | Seasonal and disturbance variability of the East-West EEJ back-scatter power asymmetry in the Brazilian sector near solar maximum  |
| Year | 2004 |
| Access Date | 2024, May 12 |
| Secondary Type | PRE CI |
| Number of Files | 1 |
| Size | 4539 KiB |
| 2. Context | |
| Author | 1 Denardini, Clezio Marcos 2 Abdu, Mangalathayil Ali 3 Sobral, Jose Humberto Andrade |
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JHNK 3 8JMKD3MGP5W/3C9JHHA |
| Group | 1 DAE-INPE-MCT-BR |
| e-Mail Address | denardin@dae.inpe.br |
| Conference Name | COSPAR Scientific Assembly, 35. |
| Conference Location | Paris, France |
| Date | 18-25 july |
| Publisher | INPE |
| Book Title | Proceedings |
| Tertiary Type | Posters |
| History (UTC) | 2005-02-25 14:10:40 :: jefferson -> administrator :: 2018-06-05 01:21:20 :: administrator -> marciana :: 2004 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Abstract | This study intends to demonstrate the seasonal and disturbance variabilities of the East-West asymmetry observed in the vertical power profile of the signal backscattered by 3-m plasma irregularities of the equatorial electrojet (EEJ) in the Brazilian sector near solar maximum. We have used data collected in 2002 by the 50 MHz coherent back-scatter (RESCO) radar at the magnetic equatorial site (São Luís site, in Brazil) to obtain Range Time Intensity (RTI) maps covering the equatorial electrojet heights during daytime. The RESCO radar was operated in the antenna switching mode with the beam pointing alternately (for 1-min duration) 30 West and 30 East with respect to the vertical direction. RTI maps were obtained for the Eastward and Westward beams separately which showed significant asymmetry of the echo strength from the two directions. We have carried out an investigation of the East-West asymmetry problem by parameterizing the electrojet irregularity power profiles in an attempt to quantify the observed asymmetry and to determine its most outstanding features. The data set was separated according to the magnetic activity and season. This analysis confirmed the presence of an East-West power asymmetry in the backscattered radar signal strength in the Brazilian sector, as seen in other sector. The eco power received with the Westward beam was always 3 to 4 times stronger then the echo power received with the Eastward beam. Some daily and seasonal characteristics of this power asymmetry are presented. The analyzed results show also the appearance of a scattering region after sunset during magnetically quiet conditions around the summer solstice of the south hemisphere. |
| Area | CEA |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAE > Seasonal and disturbance... |
| 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/sid.inpe.br/marciana/2005/01.03.16.02 |
| zipped data URL | http://urlib.net/zip/sid.inpe.br/marciana/2005/01.03.16.02 |
| Language | en |
| Target File | cospar35.pdf |
| User Group | administrator jefferson |
| Visibility | shown |
| Copy Holder | SID/SCD |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ETL868 |
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.54.26 1 sid.inpe.br/mtc-m21/2012/07.13.14.52.02 1 |
| Host Collection | sid.inpe.br/banon/2003/08.15.17.40 |
| 6. Notes | |
| Empty Fields | affiliation archivingpolicy archivist callnumber contenttype copyright creatorhistory descriptionlevel dissemination documentstage doi edition editor electronicmailaddress format identifier isbn issn keywords label lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisheraddress readergroup readpermission rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject tertiarymark type url versiontype volume |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |