| 1. Identity statement | ||||
| Reference Type | Conference Paper (Conference Proceedings) | |||
| Site | mtc-m21c.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34R/3QTFD42 | |||
| Repository | sid.inpe.br/mtc-m21c/2018/04.16.12.27 | |||
| Metadata Repository | sid.inpe.br/mtc-m21c/2018/04.16.12.27.30 | |||
| Metadata Last Update | 2020:12.07.21.11.27 (UTC) administrator | |||
| Secondary Key | INPE--PRE/ | |||
| Citation Key | RodriguesPaulMill:2018:RaImEq | |||
| Title | Radar imaging equatorial spread F events  | |||
| Year | 2018 | |||
| Access Date | 2024, July 27 | |||
| Secondary Type | PRE CI | |||
| 2. Context | ||||
| Author | 1 Rodrigues, Fabiano S. 2 Paula, Eurico Rodrigues de 3 Milla, M. A. | |||
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JH2U | |||
| Group | 1 2 DIDAE-CGCEA-INPE-MCTIC-GOV-BR | |||
| Affiliation | 1 The University of Texas at Dallas 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Jicamarca Radio Observatory | |||
| Author e-Mail Address | 1 fabiano@utdallas.edu 2 eurico.paula@inpe.br | |||
| Conference Name | Latin American Conference on Space Geophysics, 11 (COLAGE) | |||
| Conference Location | Buenos Aires, Argentina | |||
| Date | 16-20 abr. | |||
| History (UTC) | 2018-04-16 12:27:45 :: simone -> administrator :: 2018 2018-04-18 05:03:00 :: administrator -> administrator] :: 2018 2018-04-18 05:03:00 :: administrator] -> administrator :: 2018 2020-12-07 21:11:27 :: administrator -> simone :: 2018 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Abstract | Equatorial spread F (ESF) is the name given to signatures of ionospheric electron density irregularities observed by different types of ground- and space-based sensors. ESF irregularities have a wide spectrum of horizontal and vertical scale sizes, ranging from hundreds of km down to cm. Large-scale ESF structures are believed to be produced by the so-called ionospheric Generalized Rayleigh-Taylor (GRT) instability. This instability finds favorable conditions around sunset hours, near the magnetic equator when large vertical density gradients and enhanced upward plasma drifts are known to occur. Therefore, it explains the high occurrence of ESF irregularities in the post-sunset hours, and during periods when a pre-reversal enhancement of the upward ExB plasma drifts occur. Most of the main features of ESF, including its seasonal and longitudinal variability have been well studied and reported. Recent efforts have focused on advancing our understanding of the conditions leading to the short-term (day-to-day) variability in ESF. We also seek a better understanding, for instance, of unusual ESF events occurring outside typical ESF periods. Those include quiet-time events observed in the post-midnight sector, daytime, and during June solstice. Advances in numerical modeling of ESF have allowed us to better understand thermospheric and ionospheric conditions leading to ESF development and suppression. To keep up with numerical developments, new techniques and data sources need to be put in place to confirm theories and projections. New radar measurements and techniques can provide insights with that respect. In this presentation, we will talk about two-dimensional views of ESF events using observations made by relatively small radar systems. In the first part of the talk, we will present results of interferometric in-beam interferometric coherent scatter radar observations made in the Brazilian sector using a small, low-power radar system. In the second part of the talk, we will then present new coherent scatter observations of ESF events using measurements made by a 14-panel version of the AMISR system at the Jicamarca Radio Observatory in Peru. While the interferometric measurements provide high resolution observations of ESF scattering structures, they are limited in field-of-view. We show that the limitation in field-of-view can be overcome with AMISR-14 phased-array observations at the expense of zonal resolution. We will present and discuss results of both types of observations in light of current ESF theories and modeling. | |||
| Area | CEA | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAE > Radar imaging equatorial... | |||
| doc Directory Content | there are no files | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| Language | en | |||
| User Group | simone | |||
| Visibility | shown | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/3ETL868 | |||
| Host Collection | urlib.net/www/2017/11.22.19.04 | |||
| 6. Notes | ||||
| Empty Fields | archivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor format isbn issn keywords label lineage mark mirrorrepository nextedition notes numberoffiles numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readergroup readpermission 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 | ||||