| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m21b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 8JMKD3MGP5W34M/3GD3GH4 |
| Repository | sid.inpe.br/mtc-m21b/2014/05.30.02.22.14 (restricted access) |
| Last Update | 2015:02.10.16.42.21 (UTC) administrator |
| Metadata Repository | sid.inpe.br/mtc-m21b/2014/05.30.02.22.15 |
| Metadata Last Update | 2018:06.04.03.04.14 (UTC) administrator |
| DOI | 10.1007/s10712-013-9252-0 |
| ISSN | 0169-3298 |
| Label | scopus 2014-05 MuellaPaulJona:2014:GPL1Ob |
| Citation Key | MuellaPaulJona:2014:GPL1Ob |
| Title | GPS L1-Frequency Observations of Equatorial Scintillations and Irregularity Zonal Velocities  |
| Year | 2014 |
| Access Date | 2024, July 26 |
| Type of Work | journal article |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 1540 KiB |
| 2. Context | |
| Author | 1 Muella, M. T. A. H. 2 Paula, Eurico Rodrigues de 3 Jonah, O. F. |
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JH2U |
| Group | 1 2 DAE-CEA-INPE-MCTI-GOV-BR 3 DAE-CEA-INPE-MCTI-GOV-BR |
| Affiliation | 1 Universidade do Vale do Paraíba (UNIVAP) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Author e-Mail Address | 1 2 eurico@dae.inpe.br |
| e-Mail Address | marcelo.pazos@inpe.br |
| Journal | Surveys in Geophysics |
| Volume | 35 |
| Number | 2 |
| Pages | 335-357 |
| Secondary Mark | A1_GEOCIÊNCIAS A2_ENGENHARIAS_IV B1_ASTRONOMIA_/_FÍSICA |
| History (UTC) | 2018-06-04 03:04:14 :: administrator -> marcelo.pazos@inpe.br :: 2014 |
| 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 |
| Abstract | In this work, the climatology of ionospheric scintillations at global positioning system (GPS) L-band frequency and the zonal drift velocities of scintillation-producing irregularities were depicted for the equatorial observatory of São Luis (2.33°S; 44.21°W; dip latitude 1.3°S), Brazil. This is the first time that the hourly, monthly, and seasonal variations of scintillations and irregularity zonal drifts at São Luis were characterized during periods of different solar activity levels (from December 1998 to February 2007). The percentage occurrence of scintillations at different sectors of the sky was also investigated, and the results revealed that the scintillations are more probable to be observed in the west sector of the sky above São Luis, whereas the north-south asymmetries are possibly related to asymmetries in the plasma density distribution at off-equatorial latitudes. The scintillations on GPS signals occurred more frequently around solar maximum years, but it is also clear from the results of a strong variability in the scintillation activity in the years with moderate solar flux during the descending phase of the solar cycle. The equatorial scintillations occur predominantly during pre-midnight hours with a broad maximum near the December solstice months. In general, weak level of scintillations (S 4 index between 0.2 and 0.4) dominated at all seasons; however, during the winter months around solar maximum years (although the scintillation occurrence is extremely low), stronger levels of scintillations (S 4 > 0.6) may occur at comparable rate with the weak scintillations. The irregularity zonal velocities, as estimated from the GPS spaced-receiver technique, presented a different scenario for the two seasons analyzed; during the equinoxes, the magnitude of the zonal velocities appeared not to change with the solar activity, whereas during the December solstice months, the larger magnitudes were observed around solar maximum years. Other relevant aspects of the observations are highlighted and discussed. |
| Area | CEA |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAE > GPS L1-Frequency Observations... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| User Group | administrator marcelo.pazos@inpe.br |
| Reader Group | administrator marcelo.pazos@inpe.br |
| Visibility | shown |
| Archiving Policy | denypublisher denyfinaldraft12 |
| Read Permission | deny from all and allow from 150.163 |
| Update Permission | not transferred |
| 5. Allied materials | |
| Linking | Trabalho não Vinculado à Tese/Dissertação |
| Mirror Repository | iconet.com.br/banon/2006/11.26.21.31 |
| Next Higher Units | 8JMKD3MGPCW/3ETL868 |
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.45.35 4 sid.inpe.br/bibdigital/2013/09.29.20.43 2 |
| Dissemination | WEBSCI; PORTALCAPES; 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 keywords lineage mark month nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject targetfile tertiarytype url |
| 7. Description control | |
| e-Mail (login) | marcelo.pazos@inpe.br |
| update | |