Research Interests

• non-linear dynamical systems, chaos, pattern formation, reaction-diffusion systems

• fluid dynamics, mixing and turbulence, transport in geophysical flows

• applications in geophysics, chemistry, combustion, ecology, biology etc.

Publications

• C.R. Koudella and Z. Neufeld, Reaction front propagation in a turbulent flow, (submitted, 2003)

• Z. Neufeld, I.Z. Kiss, C.S. Zhou and J. Kurths, Synchronization and oscillator death in oscillatory media with stirring , Phys. Rev. Lett. 91, 084101 (2003)

• C.S. Zhou, J. Kurths, Z. Neufeld, I.Z. Kiss, Noise-sustained coherent oscillations of excitable media in a chaotic flow, Phys. Rev. Lett. 91, 150601 (2003)

• E. Hernadez-Garcia, C. Lopez and Z. Neufeld, Filament bifurcations in a one-dimensional model of reacting excitable fluid flow, Physica A 327, 59 (2003)

• I.Z. Kiss, J.H. Merkin and Z. Neufeld, Combustion initiation and extinction in a two-dimensional chaotic flow, Physica D 183, 175 (2003)

• Neufeld, Z., Kaosz es keveredes a legkorben es oceanban, Termeszet Vilaga, in hungarian, March 2003

• Kiss, I., Merkin, J.H., Scott, S.K., Kalliadasis S., Neufeld, Z., The structure of flame filaments in chaotic flows, Physica D 176, 67 (2003)

• Neufeld, Z., Lopez, C., Hernandez-Garcia, E. and Piro, O., Excitable media in open and closed chaotic flows, Phys. Rev. E. 66, 066208 (2002)

• Hernandez-Garcia, E., Lopez, C., Neufeld, Z., Spatial patterns in chemically and biologically reactive flows, (Proceedings of the 2001 ISSAOS School on 'Chaos in Geophysical Flows')

• Schneider, J., Tel, T., Neufeld, Z., The dynamics of leaked Hamiltonian systems, Phys. Rev. E. 66, 066218 (2002)

• Neufeld, Z., Haynes, P.H., Te'l, T., Chaotic mixing induced transitions in reaction-diffusion systems, Chaos 12, 426 (2002)

• Hernandez-Garcia, E., Lopez, C., Neufeld,Z., Small scale structure of nonlinearly interacting species advected by chaotic flows, Chaos 12(2), 470 (2002), also selected for Virtual Journal of Biological Physics Research , Vol. 3(11) (2002).

• Neufeld, Z., Haynes, P.H., Garcon, V.G. and Sudre, J., Ocean fertilization experiments may initiate a large scale phytoplankton bloom , Geophys. Res. Lett. 29 10.1029/2001GL013677 (2002), commentary in Science 2002 July 5; 297: 15 (in Editors' Choice: Highlights of the recent literature) and in Geophys. Res. Lett. 30 10.1029/2002GL016255 (2003)

• Neufeld, Z., Excitable media in a chaotic flow , Phys. Rev. Lett., 87(10) 108301 (2001).

• Satoh, M. and Neufeld, Z., The gradient of potential vorticity in the mid-latitudes of the troposphere , Geophys. Res. Lett., 28(1), 163 (2001).

• Lopez, C., Neufeld, Z., Hernandez-Garcia, E. and Haynes, P.H., Chaotic advection of reacting substances: Plankton dynamics on a meandering jet, Physics and Chemistry of the Earth B 26, 313 (2001).

• Neufeld, Z., Haynes, P.H. and Picard G., The effect of forcing on the spatial structure and spectra of chaotically advected passive scalars, Phys. Fluids, 12(10), 2506 (2000),

• Neufeld, Z., Lopez, C., Hernandez-Garcia, E. and Te'l, T., The multifractal structure of chaotically advected chemical fields , Phys. Rev. E, 61, 3857 (2000),

• Neufeld, Z., Lopez, C. and Haynes, P.H., Smooth-filamental transition of active tracer fields stirred by chaotic advection, Phys. Rev. Lett., 82, 2606 (1999)

• Lustfeld, H. and Neufeld, Z., Chemical dynamics versus transport dynamics in a simple model, J. Phys. A., 32, 3717 (1999)

• Neufeld, Z. and Te'l, T., Advection in chaotically time-dependent open flows, Phys. Rev. E, 57, 2832 (1998)

• Neufeld, Z. and Te'l, T., The vortex dynamics analogue of the restricted three-body problem: advection in the field of three identical point vortices, J. Phys. A., 30, 2263 (1997)

• Neufeld, Z., Vicsek, M., Vicsek, T., Complex spatiotemporal patterns in two lattice models with instability, Physica A, 233, 754 (1996)

• Neufeld, Z. and Vicsek, T., Spatiotemporal chaos in a coupled map lattice with unstable coupling, J. Phys. A., 28, 5257 (1995)

• Crisan, V., Vernes, A., Neufeld, Z., Mostis, K., Oxygen vacancy ordering and the density of states in YBa₂Cu₃O_7-y, Int. J. Mod. Phys. B, 7(1) 174, (1993)

• Pop, I., Crisan, V., Neufeld, Z., Mostis, K., Janosi, A., Density of states in YBa₂Cu₃O_7-y, Studia Physica, 1, 21 (1990)

Atmos Group Personnel