Complex Flows & Non Linear Time Series Analysis

The experimental study of nonlinear and complex systems relies on the design of specific advanced data analysis tools, which need to be able to identify properties of the dynamics which are often subtle, hidden in chaotic motions, or simply by the noise. In such cases, it is necessary to use appropriate techniques that also need to be benchmarked for a quantitative reliability. These techniques, often based on advanced statistical and mathematical tools, can be then applied on suitable systems to provide important validation or input for theoretical models and numerical simulations.

 

Solar flares and the Sun-Earth connection. In recent years, the study of solar variability and its influence on Earth has increased, both because of a more compelling need for a good protection against solar storms that arise from the massive use of the modern technology, and for the exponential quantitative and qualitative increase of measurements available. Our approach is based on the exploitation of in-situ and remote measurements of the Sun-Earth system, including remote solar imaging, magnetic field, and energetic particles, and solar wind and magnetospheric in situ and remote measurements. The main research topics concern the dynamics of the solar active regions and their relationship with flaring activity through the analysis of the complexity of the magnetic field configuration in flaring active regions [Sorriso-Valvo et al., 2015]. Other studies concern the interpretation in terms of coupling models is also studied from data, for example through the analysis of proper modes [Vecchio et al., 2005].

 

Geophysical time series analysis. Several geophysical systems can be studied in the framework of complex systems and nonlinear dynamics. Examples are: earthquakes [Carbone et al., 2005], geomagnetic field reversals [Carbone et al., 2006], geomagnetic activity. These phenomena often can be observed as time series, which can be thus studied using, e.g., statistical tools. Their description is useful to validate theoretical models, to advance the general knowledge of the process, and to some extent to help improving the predictability of catastrophic events. Time series of various phenomena are studied and their statistical properties assessed.

geophysicaltimeseriesanalysis

Facilities & Lab

LiCryL @ Rende (CS)

People

Luca_Sorriso_valvoLuca

Sorriso-Valvo

CNR Researcher

Publications

  1. F. Pucci, F. Malara, S. Perri, G. Zimbardo, L. Sorriso-Valvo and F. Valentini, Energetic particle transport in the presence of magnetic turbulence: influence of spectral extension and intermittency, Month. Notes R. Astron. Soc. 459, 3395 (2016), DOI: 10.1093/mnras/stw877.
  2. E. Leonardis, L. Sorriso-Valvo, F. Valentini, S. Servidio, F. Carbone and P. Veltri, Multifractal scaling and intermittency in hybrid Vlasov-Maxwell simulations of plasma turbulence, Physics of Plasmas, 23, 022307 (2016), DOI: 10.1063/1.4942417.
  3. C. Rossi, F. Califano, A. Retinò, L. Sorriso-Valvo, P. Henri, S. Servidio, F. Valentini, A. Chasapis, and L. Rezeau, Two-fluid numerical simulations of turbulence inside Kelvin-Helmholtz vortices: intermittency and reconnecting current sheets, Physics of Plasmas, 22, 122303 (2015), DOI: 10.1063/1.4936795.
  4. F. Carbone, F. Ciuchi, A. Mazzulla, L. Sorriso-Valvo, Anomalous Scaling, Intermittency and Turbulence in Nematic Liquid Crystals, Molecular Crystals and Liquid Crystals, 614, 67 (2015), DOI: 10.1080/15421406.2015.1049911.
  5. G. De Vita, A. Vecchio, L. Sorriso-Valvo, C. Briand, L. Primavera, S. Servidio, F. Lepreti and V. Carbone, Cancellation analysis of current density in solar active region NOAA10019, Journal of Space Weather and Space Climate, 5, A28 (2015), DOI: 10.1051/swsc/2015029.
  6. L. Sorriso-Valvo, R. Marino, L. Lijoi, S. Perri and V. Carbone, Self-consistent Castaing distribution of solar wind turbulent fluctuations, The Astrophysical Journal, 807, 86 (2015), DOI: 10.1088/0004-637X/807/1/86.
  7. A. Chasapis, A. Retinò, F. Sahraoui, A. Vaivads, Y. Khotyaintsev, D. Sundkvist, A. Greco, L. Sorriso-Valvo, P. Canu, Thin current sheets and associated electron heating in turbulent space plasma, The Astrophysical Journal Letters 804, L1 (2015), DOI: 10.1088/2041-8205/804/1/L1.
  8. E. Yordanova, S. Perri, L. Sorriso-Valvo and V. Carbone, Multipoint observation of anisotropy and intermittency in solar-wind turbulence, EPL 110, 19001 (2015), DOI: 10.1209/0295-5075/110/19001.
  9. L. Sorriso-Valvo, G. De Vita, M. Kazachenko, S. Krucker, L. Primavera, S. Servidio, A. Vecchio, B. Welsch, G. Fisher, F. Lepreti, V. Carbone, Sign singularity and flares in solar active region NOAA 11158, The Astrophysical Journal 801, 36 (2015), DOI: 10.1088/0004-637X/801/1/36.
  10. G. De Vita, L. Sorriso-Valvo, F. Valentini, S. Servidio, L. Primavera, V. Carbone and P. Veltri, Analysis of cancellation exponents in two-dimensional Vlasov turbulence, Physics of Plasmas 21, 072315 (2014), DOI: 10.1063/1.4891339.
  11. F. Carbone and L. Sorriso-Valvo, Experimental analysis of intermittency in electrohydrodynamic instability, European Journal of Physics E 37, 61 (2014), DOI: 10.1140/epje/i2014-14061-x.
  12. C. H. K. Chen, L. Sorriso-Valvo, J. Safrankova, Z. Nemecek, Intermittency of solar wind density fluctuations from ion to electron scales, The Astrophysical Journal Letter 789, L8 (2014), DOI: 10.1088/2041-8205/789/1/L8.
  13. R. Bruno, D. Telloni, L. Primavera, E. Pietropaolo, R. D’Amicis, L. Sorriso-Valvo, V. Carbone, F. Malara and P. Veltri, Radial evolution of intermitency of density fluctuations in the fast solar wind, The Astrophysical Journal 786, 53 (2014), DOI: 10.1088/0004-637X/786/1/53.

Other Selected Publication

  1. T. Dudok de Wit, O. Alexandrova, I. Furno, L. Sorriso-Valvo, G. Zimbardo, Methods for Characterising Microphysical Processes in Plasmas, Space Science Reviews 178, 693 (2013), DOI: 10.1007/978-1-4899-7413-6_21.
  2. R. Marino, L. Sorriso-Valvo, R. D’Amicis, V. Carbone, R. Bruno, P. Veltri, On the occurrence of the third-order scaling in high latitude solar wind, The Astrophysical Journal 750, 41 (2012), DOI: 10.1088/0004-637X/750/1/41.
  3. F. Carbone, L. Sorriso-Valvo, C. Versace, G. Strangi, R. Bartolino, Anisotropy of Spatiotemporal Decorrelation in Electrohydrodynamic Turbulence, Physical Reviews Letters 106, 114502 (2011), DOI: 10.1103/PhysRevLett.106.114502.
  4. V. Carbone, R. Marino, L. Sorriso-Valvo, A. Noullez, R. Bruno, Scaling laws of turbulence and heating of fast solar wind: the role of density fluctuations, Physical Review Letters 103, 061102 (2009), DOI: 10.1103/PhysRevLett.103.061102.
  5. R. Marino, L. Sorriso-Valvo, V. Carbone, A. Noullez, R. Bruno and B. Bavassano, Heating the solar wind by a magnetohydrodynamic turbulent cascade, The Astrophysical Journal Letters 677, L71-L74 (2008), DOI: 10.1086/587957.
  6. O. Alexandrova, V. Carbone, P. Veltri, L. Sorriso-Valvo, Small-scale energy cascade of the solar wind turbulence, The Astrophysical Journal 674, 1153-1157 (2008), DOI: 10.1086/524056.
  7. L. Sorriso-Valvo, R. Marino, V. Carbone, A. Noullez, F. Lepreti, P. Veltri, R. Bruno, B. Bavassano, E. Pietropaolo, Observation of Inertial Energy Cascade in Interplanetary Space Plasma, Physical Review Letters 99, 115001-1-115001-4 (2007), DOI: 10.1103/PhysRevLett.99.115001.
  8. V. Carbone, L. Sorriso-Valvo, A. Vecchio, F. Lepreti, P. Veltri, P. Harabaglia, I. Guerra, Clustering of Polarity Reversals of the Geomagnetic Field, Physical Review Letters 96, 128501-1-128501-4 (2006), DOI: 10.1103/PhysRevLett.96.128501.
  9. V. Carbone, L. Sorriso-Valvo, E. Martines, V. Antoni, P. Veltri, Intermittency and turbulence in a magnetically confined fusion plasma, Physical Review E 62, R49-R52 (2000), DOI: 10.1103/PhysRevE.62.R49.
  10. L. Sorriso-Valvo, V. Carbone, P. Veltri, G. Consolin, R. Bruno, Intermittency in the solar wind turbulence through probability distribution functions of fluctuations, Geophysical Research Letters 26, 1801-1804 (1999), DOI: 10.1029/1999GL900270.

Projects

Turboplasmas: FP7 European Marie Curie IRSES 2010-269297, 2011-2014.

Anisotropy and intermittency in solar wind turbulence – ISSI Team, 2014-2015.

Kinetic Turbulence and Heating in the Solar Wind – ISSI Team, 2013-2014

Statistical mechanics of disordered and complex systems – PRIN2010-2011, 2013-2016

Nanoftalm: Piattaforme tecnologiche innovative per il delivery di farmaci in oftalmologia – PON MIUR, PON_0100110, 2011-2014

CNR Short Term Mobility Program 2014, visiting at Laboratoire de Physique du Plasma, Palaiseau, France, working with Dr. A. Retinò, 2014, 1 month.

CNR Short Term Mobility Program 2015,visiting at University College of London, UK, working with DR. R. WICKS (2015, 1 MONTH).

Latest News

Loretta del Mercato, si aggiudica l'ERC STARTING GRANT 2017

Loretta del Mercato, si aggiudica  l'ERC STARTING GRANT 2017

uno dei bandi più competitivi a livello europeo.

Lecce, 6 settembre 2017 

Lo European Research Council, che promuove la ricerca di eccellenza in Europa, nei giorni scorsi ha reso noti i nomi dei 406 vincitori della selezione ERC STARTING GRANT 2017, il bando tra i più competitivi a livello internazionale.

Su 3085 progetti presentati, 406 i progetti selezionati a cui sono stati destinati i 605 i milioni di euro di investimento. 48 le nazioni di provenienza dei ricercatori, soltanto 17 gli Italiani che condurranno le loro ricerche nel nostro paese, tra cui Loretta del Mercato, ricercatrice dell'Istituto di Nanotecnologia del Consiglio Nazionale delle Ricerche di Lecce.

Un importante riconoscimento alla ricerca nel settore della medicina di precisione condotta presso il CNR NANOTEC, un indiscusso premio al talento della giovane ricercatrice che, a 38 anni e un contratto a tempo determinato, sarà a capo del progetto "Sensing cell-cell interaction heterogeneity in 3D tumor models: towards precision medicine – INTERCELLMED".

Il progetto, il cui obiettivo è affrontare uno dei problemi più spinosi della ricerca sul cancro, ovvero la difficoltà nel trasformare i risultati delle ricerche scientifiche in applicazioni cliniche per i pazienti e che vedrà coinvolto l'Istituto tumori "Giovanni Paolo II" di Bari, si propone di sviluppare nuovi modelli in vitro 3D di tumore del pancreas, alternativi ai modelli animali, ingegnerizzati con un set di sensori nanotecnologici che consentiranno di monitorare le interazioni delle cellule tumorali con il loro micorambiente, verificare l'appropriatezza delle terapie prima della somministrazione ai pazienti oncologici e quindi prevedere la risposta dei singoli pazienti ad una o più terapie antitumorali.

La realizzazione di queste piattaforme 3D multifunzionali consentirà di superare le evidenti differenze intercorrenti tra "modelli animali" ed esseri umani fornendo dati attendibili ed in tempi più rapidi rispetto ai dati ottenuti tramite lunghi e costosi procedimenti di sperimentazione sugli animali. Le tecnologie e i modelli sviluppati saranno estesi anche ad altre forme di tumori solidi nonché impiegati per studi nell'ambito della ingegneria tissutale e della medicina rigenerativa.

Rassegna stampa e Video

Zeiss Microscopy Technology and Complete Correlative Workflow

[vc_row][vc_column][vc_column_text]

Zeiss Microscopy Technology and Complete Correlative Workflow

Lecce, Italy, 2017 Wednesday July 19th 

CNR NANOTEC @ Lecce, Aula Seminari – pal. G, Piano Terra

Program - PDF

Zeiss, as microscopy technology leader, provides the unique complete imaging solution ranging from light, confocal, electron, ion and Xray modalities with a complete and straightforward correlative workflow. An overview of different technologies will be presented with a special focus on X-Rray microscopy.

[/vc_column_text][/vc_column][/vc_row]

MCS 2017

International Workshop on Micropropulsion and CubeSats

Bari, Italy, 26 - 27 June 2017

Program - MSC2017

This narrow-field, invited-only meeting is the first attempt to bring together the Materials and Micropropulsion communities with a view to contribute to the development of the Global Materials and Micropropulsion Roadmap, and set such meetings to a regular basis.