Spatio-temporal analysis of photospheric turbulent velocity fields using the proper orthogonal decomposition (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Spatio-temporal analysis of photospheric turbulent velocity fields using the proper orthogonal decomposition (Articolo in rivista) (literal)

Anno

• 2008-01-01T00:00:00+01:00 (literal)

Alternative label

• Vecchio, A; Carbone, V; Lepreti, F; Primavera, L; Sorriso-Valvo, L; Straus, T; Veltri, P (2008)
  Spatio-temporal analysis of photospheric turbulent velocity fields using the proper orthogonal decomposition
  in Solar physics
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Vecchio, A; Carbone, V; Lepreti, F; Primavera, L; Sorriso-Valvo, L; Straus, T; Veltri, P (literal)

Pagina inizio

• 163 (literal)

Pagina fine

• 178 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 251 (literal)

Rivista

• Solar physics (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• \"[Vecchio, A.; Carbone, V.; Lepreti, F.; Primavera, L.; Veltri, P.] Univ Calabria, Dipartmento Fis, I-87036 Arcavacata Di Rende, CS, Italy; [Sorriso-Valvo, L.] INFM CNR, LICRYL, I-87036 Arcavacata Di Rende, CS, Italy; [Straus, T.] Osserv Astron Capodimonte, INAF, I-80131 Naples, Italy (literal)

Titolo

• Spatio-temporal analysis of photospheric turbulent velocity fields using the proper orthogonal decomposition (literal)

Abstract

• The spatio-temporal dynamics of the solar photosphere are studied by performing a proper orthogonal decomposition (POD) of line-of-sight velocity fields computed from high-resolution data coming from the SOHO/MDI instrument. Using this technique, we are able to identify and characterize the different dynamical regimes acting in the system. All of the POD modes are characterized by two well-separated peaks in the frequency spectra. In particular, low-frequency oscillations, with frequencies in the range 20 - 130 mu Hz, dominate the most energetic POD modes (excluding solar rotation) and are characterized by spatial patterns with typical scales of about 3 Mm. Patterns with larger typical scales, of about 10 Mm, are dominated by p-mode oscillations at frequencies of about 3000 mu Hz. The p-mode properties found by POD are in agreement with those obtained with the classical Fourier analysis. The spatial properties of high-energy POD modes suggest the presence of a strong coupling between low-frequency modes and turbulent convection. (literal)

Prodotto di

• Soft Matter e nanotecnologie per elettro-ottica e di interesse biomedico e applicazioni tecnologiche correlate (MD.P01.015.009) (Modulo)
• Soft Matter e nanotecnologie per elettro-ottica e di interesse biomedico e applicazioni tecnologiche correlate (MD.P01.016.001) (Modulo)
• Istituto per i processi chimico-fisici (IPCF) (Istituto)

Autore CNR

• LUCA SORRISO VALVO (Unità di personale interno)

Insieme di parole chiave

• Parole chiave di "Spatio-temporal analysis of photospheric turbulent velocity fields using the proper orthogonal decomposition" (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto per i processi chimico-fisici (IPCF) (Istituto)
• Soft Matter e nanotecnologie per elettro-ottica e di interesse biomedico e applicazioni tecnologiche correlate (MD.P01.015.009) (Modulo)
• Soft Matter e nanotecnologie per elettro-ottica e di interesse biomedico e applicazioni tecnologiche correlate (MD.P01.016.001) (Modulo)

Autore CNR di

• LUCA SORRISO VALVO (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Solar physics (Rivista)

Insieme di parole chiave di

• Parole chiave di "Spatio-temporal analysis of photospheric turbulent velocity fields using the proper orthogonal decomposition" (Insieme di parole chiave)