| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZsFDuKxG/EqsCz |
| Repository | sid.inpe.br/marciana/2004/12.10.11.48 (restricted access) |
| Last Update | 2005:08.02.03.00.00 (UTC) administrator |
| Metadata Repository | sid.inpe.br/marciana/2004/12.10.11.48.53 |
| Metadata Last Update | 2018:06.05.01.21.12 (UTC) administrator |
| Secondary Key | INPE-12918-PRE/8200 |
| ISSN | 0098-3004 |
| Citation Key | ZanandreaCosDutRosSao:2004:SpPoAn |
| Title | Spectral and polarization analysis of geomagnetic pulsations data using a multitaper method  |
| Year | 2004 |
| Month | Oct. |
| Access Date | 2024, May 05 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 635 KiB |
| 2. Context | |
| Author | 1 Zanandrea, Ademilson 2 Costa, J. M. da 3 Dutra, Severino Luiz Guimaraes 4 Rosa, Reinaldo Roberto 5 Saotome, O. |
| Resume Identifier | 1 2 3 8JMKD3MGP5W/3C9JJ8J 4 8JMKD3MGP5W/3C9JJ5D |
| Group | 1 DGE-INPE-MCT-BR 2 LAC-INPE-MCT-BR |
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais, Divisão de Geofísica Espacial (INPE-DGE) 2 Laboratório Associado de Computação e Matemática Aplicada, (INPE, LAC) |
| e-Mail Address | reinaldo@lac.inpe.br |
| Journal | Computers and Geosciences |
| Volume | 30 |
| Number | 8 |
| Pages | 797-808 |
| History (UTC) | 2005-08-02 13:50:21 :: jefferson -> administrator :: 2006-09-28 22:28:32 :: administrator -> banon :: 2007-03-06 15:32:28 :: banon -> administrator :: 2018-06-05 01:21:12 :: administrator -> marciana :: 2004 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | multitaper multiwavelets polarization analysis geomagnetic pulsations / MULTICHANNEL GEOPHYSICAL-DATA HIGH-FREQUENCY SEISMOGRAMS PRINCIPAL COMPONENTS FOURIER-ANALYSIS STATES WAVES MICROPULSATIONS UNCERTAINTY MULTIPLE MATRIX |
| Abstract | Spectral and polarization parameters of geomagnetic pulsations are computed from geomagnetic data recorded at ground station, using multitaper and singular value decomposition (SVD) analysis. These techniques were adapted to provide appropriate polarization parameters of pulsations. The spectra are comparable to those obtained from classical methods, but the dynamic spectra of degree of polarization present more localized spectral information, allowing easier identification of polarized pulsation events mixed to noise, which are associated by coherent sources of MHD waves. The time-frequency polarization parameters of polarized pulsations show different signatures to regular and irregular pulsation events, and the multiwavelet polarization method is used to compare with multitaper. The regular pulsation events showed to be more continuous on time with a narrow spectral frequency band, while the irregular events showed to be more localized on time with a wide spectral frequency band. The dynamic analysis of multitaper method is indicated to characterize regular pulsations and the time-frequency analysis of multiwavelet method efficiently detects irregular pulsations. The continuous multiwavelet analysis of ellipticity and azimuth is useful in progressively monitoring the propagations of MHD waves in the magnetosphere, mainly in the irregular pulsations as observed on the magnetic storm of March 24, 1991. (C) 2004 Elsevier Ltd. All rights reserved. |
| Area | CEA |
| Arrangement 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAC > Spectral and polarization... |
| Arrangement 2 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDGE > Spectral and polarization... |
| 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 |
| Target File | spectral polarization.pdf |
| User Group | administrator jefferson |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Archiving Policy | denypublisher denyfinaldraft24 |
| Read Permission | deny from all and allow from 150.163 |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ESGTTP 8JMKD3MGPCW/3EU29DP |
| Dissemination | WEBSCI; PORTALCAPES; MGA; COMPENDEX. |
| Host Collection | sid.inpe.br/banon/2003/08.15.17.40 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyright creatorhistory descriptionlevel documentstage doi electronicmailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |