| 1. Identity statement | |
| Reference Type | Conference Paper (Conference Proceedings) |
| Site | mtc-m21b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 8JMKD3MGP3W34P/3K3B3LB |
| Repository | sid.inpe.br/mtc-m21b/2015/08.11.12.42 |
| Metadata Repository | sid.inpe.br/mtc-m21b/2015/08.11.12.42.18 |
| Metadata Last Update | 2018:06.04.02.55.37 (UTC) administrator |
| Secondary Key | INPE--PRE/ |
| Citation Key | Abdu:2015:PrWaSt |
| Title | Precursor wave structure, polarization electric field and vertical drift as drivers for equatorial plasma bubble/spread F development  |
| Year | 2015 |
| Access Date | 2024, May 20 |
| Secondary Type | PRE CI |
|
| 2. Context | |
| Author | Abdu, Mangalathayil Ali |
| Resume Identifier | 8JMKD3MGP5W/3C9JHNK |
| Group | DAE-CEA-INPE-MCTI-GOV-BR |
| Affiliation | Instituto Nacional de Pesquisas Espaciais (INPE) |
| Author e-Mail Address | ma.abdu@inpe.br |
| Conference Name | Annual Meetings Asia Oceania Geosciences Society (AOGS) |
| Conference Location | Singapore |
| Date | 2-7 Aug. |
| History (UTC) | 2015-08-11 12:42:18 :: simone -> administrator ::
2018-06-04 02:55:37 :: administrator -> simone :: 2015 |
|
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Abstract | The plasma bubble/spread F irregularities of the nighttime equatorial ionosphere typically develop in the post sunset hours, and often continue till sunrise. The irregularities develop from the R-T instability mechanism operating at the bottomside of an F layer in rapid rise under an enhanced evening prereversal zonal electric field (PRE). A precursor seed perturbation in electron density with polarization electric field, to be present at the steep density gradient region of the F layer bottomside, is an additional requirement, as per theoretical considerations and model studies. Recent results from both statistical as well as case studies bases have supported the presence of such perturbations in the form of wave structures, likely produced by upward propagating gravity waves. An important issue concerns the complementary/competing influences from the PRE and seed perturbation in the ESF development process. Of particular interest are the characteristics of the precursor wave structure in the hours preceding the post sunset ESF development, as diagnosed by different observational techniques. Analysis of the F layer heights at specific plasma frequencies as measured by Digisondes operated at equatorial and low latitude sites, including magnetic conjugate sites, in Brazil has revealed the characteristics of precursor wave structure in the form of gravity wave oscillations and their amplification in the afternoon hours leading to post sunset ESF development. In this talk we will present and discuss recent results on the characteristics of the precursor wave structure as seen by different techniques, and in particular the observations by Digisondes showing evidence on its sustenance and amplification in the afternoon hours, supported by model results, and the relationship to the PRE and post sunset ESF development. |
| Area | CEA |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAE > Precursor wave structure,... |
| doc Directory Content | there are no files |
| source Directory Content | there are no files |
| agreement Directory Content | |
|
| 4. Conditions of access and use | |
| User Group | simone |
| Visibility | shown |
| Read Permission | allow from all |
| Update Permission | not transferred |
|
| 5. Allied materials | |
| Mirror Repository | urlib.net/www/2011/03.29.20.55 |
| Next Higher Units | 8JMKD3MGPCW/3ETL868 |
| Citing Item List | 1 |
| Host Collection | sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 |
|
| 6. Notes | |
| Empty Fields | archivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor format isbn issn keywords label language lineage mark nextedition notes numberoffiles numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readergroup rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle size sponsor subject targetfile tertiarymark tertiarytype type url versiontype volume |
|
| 7. Description control | |
| e-Mail (login) | simone |
| update | |
|