@Article{ChianReAuScShWeYe:2014:DeCoSt,
               author = "Chian, Abraham Chian-Long and Rempel, Erico L. and Aulanier, 
                         Guillaume and Schmieder, Brigitte and Shadden, Shawn C. and 
                         Welsch, Brian T. and Yeates, Anthony R.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and National 
                         Institute for Space Research (INPE), World Institute for Space 
                         Environment Research (WISER), P.O. Box 515, 12227-010 S{\~a}o 
                         Jos{\'e} dos Campos-SP, Brazil; Institute of Aeronautical 
                         Technology (ITA), WISER, 12228-900 S{\~a}o Jos{\'e} dos 
                         Campos-SP, Brazil and Observatoire de Paris, LESIA, CNRS, F-92190 
                         Meudon, France and Observatoire de Paris, LESIA, CNRS, F-92190 
                         Meudon, France and Department of Mechanical Engineering, 
                         University of California, Berkeley, CA 94720, United States and 
                         Space Science Laboratory, University of California, Berkeley, CA 
                         94720, United States and Department of Mathematical Sciences, 
                         Durham University, Durham DH1 3LE, United Kingdom",
                title = "Detection of coherent structures in photospheric turbulent flows",
              journal = "Astrophysical Journal",
                 year = "2014",
               volume = "786",
               number = "51",
                pages = "(13pp.)",
                month = "May",
             keywords = "magnetohydrodynamics (MHD), magnetic fields, photosphere, 
                         turbulence, sun.",
             abstract = "We study coherent structures in solar photospheric flows in a 
                         plage in the vicinity of the active region AR 10930 using the 
                         horizontal velocity data derived from Hinode/Solar Optical 
                         Telescope magnetograms. Eulerian and Lagrangian coherent 
                         structures (LCSs) are detected by computing the Q-criterion and 
                         the finite-time Lyapunov exponents of the velocity field, 
                         respectively. Our analysis indicates that, on average, the 
                         deformation Eulerian coherent structures dominate over the 
                         vortical Eulerian coherent structures in the plage region. We 
                         demonstrate the correspondence of the network of high magnetic 
                         flux concentration to the attracting Lagrangian coherent 
                         structures (aLCSs) in the photospheric velocity based on both 
                         observations and numerical simulations. In addition, the 
                         computation of aLCS provides a measure of the local rate of 
                         contraction/expansion of the flow. © 2014. The American 
                         Astronomical Society. All rights reserved.",
                  doi = "10.1088/0004-637X/786/1/51",
                  url = "http://dx.doi.org/10.1088/0004-637X/786/1/51",
                 issn = "0004-637X and 1538-4357",
                label = "scopus 2014-05 ChianReAuScShWeYe:2014:DeCoSt",
             language = "en",
           targetfile = "Chian et al_ApJ 2014.pdf",
        urlaccessdate = "27 abr. 2024"
}