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based on spatial correlations in the time series of the Atlantic temperature field To demonstrate the performance of these indicators we use a meridional depth model of the MOC for which the critical conditions for collapse can be explicitly computed An interaction network approach is used to monitor changes in spatial correlations in the model temperature time series as the critical transition is approached The new early warning indicators are

Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2411 (2016-02-15)

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a general study of the properties of the model we show an application to the particular case of acoustic communication among Mongolian gazelle for which data are available searching for good habitat areas Using Monte Carlo simulations and density equations our results point out that the search is optimal i e the mean first hitting time among searchers is minimum at intermediate scales of communication showing that both an excess

Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2373 (2016-02-15)

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based data driven model developed using real flight performance registers for the entire US airport network and focus on the events occurring on October 27 2010 in the United States A major storm complex that was later called the 2010 Superstorm took place that day Our model correctly reproduces the evolution of the delay spreading dynamics By considering different intervention measures we can even improve the model predictions getting closer

Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2423 (2016-02-15)

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limit the standard full spectrum of spatial structures obtained in general vegetation models is recovered Long range competition is thus the key ingredient for the development of patterns The long time coexistence between trees and grass and how fires affect the survival of trees as well as the maintenance of the patterns is studied The influence of demographic noise is analyzed The stochastic system under the parameter constraints typical of

Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2347 (2016-02-15)

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locate these coherent structures Three dimensional FSLE fields are calculated in two phenomenologically distinct turbulent flows a wall bounded flow channel flow and a regional oceanic flow obtained by numerical solution of the primitive equations where two dimensional turbulence dominates In the channel flow autocorrelations of the FSLE field show that the structure is substantially different from the near wall to the mid channel region and relates well to the more widely studied Eulerian coherent structure of the turbulent channel flow The ridges of the FSLE field have complex shapes due to the 3d character of the turbulent fluctuations In the oceanic flow strong horizontal stirring is present and the flow regime is similar to that of 2d turbulence where the domain is populated by coherent eddies that interact strongly This in turn results in the presence of high FSLE lines throughout the domain leading to strong non local mixing The ridges of the FSLE field are quasi vertical surfaces indicating that the horizontal dynamics dominates the flow Indeed due to rotation and stratification vertical motions in the ocean are much less intense than horizontal ones This suppression is absent in the channel flow as the 3d character of the

Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2333 (2016-02-15)

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dependent wave packet solutions to a nonlinear Schrödinger equation recently advanced by Nobre Rego Monteiro and Tsallis NRT F D Nobre M A Rego Monteiro C Tsallis Phys Rev Lett 106 2011 140601 The NRT nonlinear equation admits plane wave like solutions qq plane waves compatible with the celebrated de Broglie relations connecting wave number and frequency respectively with energy and momentum The NRT equation inspired in the qq generalized thermostatistical formalism is characterized by a parameter qq and in the limit q 1q 1 reduces to the standard linear Schrödinger equation The qq Gaussian solutions to the NRT equation investigated here admit as a particular instance the previously known qq plane wave solutions The present work thus extends the range of possible processes yielded by the NRT dynamics that admit an analytical exact treatment In the q 1q 1 limit the qq Gaussian solutions correspond to the Gaussian wave packet solutions to the free particle linear Schrödinger equation In the present work we also show that there are other families of nonlinear Schrödinger like equations besides the NRT one exhibiting a dynamics compatible with the de Broglie relations Remarkably however the existence of time dependent Gaussian like wave packet

Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2534 (2016-02-15)

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encounter links with entanglement witnesses which leads to a new separability criteria expressed in lattice language We also provide an extension of a separability criteria based on convex polytopes to the infinite dimensional case and show that it reveals interesting facets concerning the geometrical structure of the convex subsets It is seen that the above mentioned framework is also capable of generalization to any statistical theory via the so called

Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2531 (2016-02-15)

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Transport and Mixing and their connection with Dynamical and Biological Processes in the Ocean Hernández Carrasco Ismael Supervisors López Cristóbal and Hernández García Emilio PhD Thesis 2013 Fitxers tesis version final pdf 37582433 Bytes Tornar a la llista de publicacions Cerca publicacions Conté la paraula es Operador AND OR NOT Paraules adicionals Línia d investigació Totes Complex Quantum Optics Fluids Biosystems Social Outreach Cerca avançada Xerrades i Presentacions Cercar a

Original URL path: http://ifisc.uib-csic.es/publications/publication-detail.php?indice=2422 (2016-02-15)

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