| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21d.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34T/4645GKL | |||
| Repository | sid.inpe.br/mtc-m21d/2021/12.27.11.27 (restricted access) | |||
| Last Update | 2021:12.27.11.27.00 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21d/2021/12.27.11.27.01 | |||
| Metadata Last Update | 2022:04.03.19.24.09 (UTC) administrator | |||
| DOI | 10.1007/s11207-021-01921-2 | |||
| ISSN | 0038-0938 1573-093X | |||
| Citation Key | OliveiraOlOjPiEcNi:2021:ReAmMa | |||
| Title | Resolving the Ambiguity of a Magnetic Cloud’s Orientation Caused by Minimum Variance Analysis Comparing it with a Force-Free Model  | |||
| Year | 2021 | |||
| Month | Dec. | |||
| Access Date | 2024, May 16 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 3199 KiB | |||
| 2. Context | ||||
| Author | 1 Oliveira, Rosemeire Aparecida Rosa 2 Oliveira, Marcos William da Silva 3 Ojeda-Gonzalez, Arian 4 Pillat, Valdir Gil 5 Echer, Ezequiel 6 Nieves-Chinchilla, Teresa | |||
| Resume Identifier | 1 2 3 4 5 8JMKD3MGP5W/3C9JH3D | |||
| ORCID | 1 0000-0003-4466-8339 2 0000-0003-2889-1784 3 0000-0002-6312-9026 4 0000-0002-5849-0597 5 0000-0002-8351-6779 6 0000-0003-0565-4890 | |||
| Group | 1 2 3 4 5 DIHPA-CGCE-INPE-MCTI-GOV-BR | |||
| Affiliation | 1 Universidade do Vale do Paraíba (UNIVAP) 2 Instituto Federal de Ciência e Tecnologia de São Paulo (IFSP) 3 Universidade do Vale do Paraíba (UNIVAP) 4 Universidade do Vale do Paraíba (UNIVAP) 5 Instituto Nacional de Pesquisas Espaciais (INPE) 6 NASA Goddard Space Flight Center | |||
| Author e-Mail Address | 1 meirematematica@gmail.com 2 oliveiramw@ifsp.edu.br 3 ojeda.gonzalez.a@gmail.com 4 valdirgp@univap.br 5 ezequiel.echer@inpe.br 6 teresa.nieves@nasa.gov | |||
| Journal | Solar Physics | |||
| Volume | 296 | |||
| Number | 12 | |||
| Pages | e182 | |||
| Secondary Mark | A2_INTERDISCIPLINAR A2_GEOCIÊNCIAS A2_BIOTECNOLOGIA B1_ENGENHARIAS_IV B1_ASTRONOMIA_/_FÍSICA B2_CIÊNCIA_DA_COMPUTAÇÃO | |||
| History (UTC) | 2021-12-27 11:27:01 :: simone -> administrator :: 2021-12-27 11:27:02 :: administrator -> simone :: 2021 2021-12-27 11:27:49 :: simone -> administrator :: 2021 2022-04-03 19:24:09 :: administrator -> simone :: 2021 | |||
| 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 | |||
| Keywords | Coronal mass ejections interplanetary Magnetic fields interplanetary Solar disturbances | |||
| Abstract | This study aims to incorporate an algebraic and computational method for calculating the angles of the magnetic clouds (MC) axis from the minimum variance analysis (MVA) and correcting them compared to a simulated model from the linear, force-free approximation. Consequently, it determines the type of flux-rope consistently and automatically. In general, MCs measured in situ at 1 Astronomical Unit (AU) may be approximated to have a cylindrical geometry, and the internal magnetic-field topology is traditionally described by a force-free equilibrium flux-rope model. Based on the Bz-rotation, the flux-rope configuration can be classified in eight groups. This classification is obtained from the angle of rotation of the magnetic-field vector and inclination of the flux-rope axis (ϕ, θ) in relation to the plane of the Ecliptic. The MVA is applied to interplanetary magnetic-field (IMF) observations to obtain the direction of the cylinder axis. However, MVA estimates may have an ambiguity of 180 ∘ in this direction. This is directly affected by the eigenvector signal since eigenvalues in MVA are always positive. To apply the methodology, a sample of 50 MC events measured by the Advance Composition Explorer (ACE) spacecraft was investigated in the period from 1998 to 2003. 83.72 % of the analysed events achieved a satisfactory match between the maximum- and minimum-variance planes (from MVA) with the model (force-free) and (ϕ, θ) angles consistent with the MC geometry. Moreover, automatic classification of the MC or flux-rope tube type related to the MC-axis was consistent for 100 % of the events studied. This processing is organized in a computational tool described in this publication. We discuss the results and implications of our analysis of six magnetic cloud events in 2018 during the solar minimum. | |||
| Area | CEA | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGCE > Resolving the Ambiguity... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| Language | en | |||
| Target File | Oliveira_resolvin.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Archiving Policy | denypublisher denyfinaldraft12 | |||
| Read Permission | deny from all and allow from 150.163 | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Mirror Repository | urlib.net/www/2021/06.04.03.40.25 | |||
| Next Higher Units | 8JMKD3MGPCW/46KTFK8 | |||
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.45.47 2 | |||
| Dissemination | WEBSCI; PORTALCAPES; SCOPUS. | |||
| Host Collection | urlib.net/www/2021/06.04.03.40 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark nextedition notes parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||