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Transition to turbulence in jets and vortices
Turbulent Lagrangian dispersion
Networks
Topographic waves
Effects of topography on plankton dynamics
2D and quasi-2D turbulence
Tropical cyclones
Nonlinear Ekman effects - Theory, experiments and simulations
Experiments and simulations on rotating flows over variable topography
Vortices against walls

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Transition to turbulence in jets and vortices

López Zazueta, A., Zavala Sansón, L., 2018.
Self-oscillations of a two-dimensional shear flow with forcing and dissipation
.
Phys. Fluids, 30, 144101. pdf

González Vera, A. S., Zavala Sansón, L., 2015. 

The evolution of a continuously forced shear flow in a closed rectangular. 

Phys. Fluids, 27, 034106.  pdf


Cruz Gómez, R. C., L. Zavala Sansón, y M. A. Pinilla, 2013.
Generation of isolated vortices in a rotating fluid by means of an electromagnetics method. 

Exp. Fluids, 54(8): 1582.  pdf



jets
Laboratory experiment on vortex formation in a shallow shear layer (González Vera and Zavala Sansón, 2015).


ciclon
Generation of shallow-water vortices by electromagnetic methods (Cruz Gómez et al., 2013).

Turbulent Lagrangian dispersion

Zavala Sansón, L., J. Sheinbaum, and P. Pérez-Brunius, 2018.

Single-particle statistics in the southern Gulf of Mexico.  
Geofís. Int., 57(2), 139-150 pdf


Zavala Sansón, L., P. Pérez-Brunius and J. Sheinbaum, 2017.

Surface relative dispersion in the southwestern Gulf of Mexico.  
J, Phys. Oceanogr., 47(2), 387-403. pdf


Zavala Sansón, L., P. Pérez-Brunius and J. Sheinbaum, 2017.

Point source dispersion of surface drifters in the southern Gulf of Mexico.  
Environ. Res. Lett. 12, 024006. pdf


Zavala Sansón, L., 2015.
Surface dispersion in the Gulf of California. 
Progress in Oceanography, 137, A, 24-37. pdf


Andrade Canto, F., J. Sheinbaum Pardo and L. Zavala Sansón, 2013. 

A Lagrangian approach to the loop currrent eddy separation. 

Nonlin. Processes Geophys., 20(1): 85-96.  pdf



gm

Surface drifter buoy trajectories and altimetry surfaces (Zavala Sansón et al., 2017a).


elipses

Dispersion ellipses in the southern Gulf of Mexico (Zavala Sansón et al., 2017b).

Networks

Zavala Sansón, L. and A. González-Villanueva, 2017.
Allometric scaling laws derived from symmetric tree networks.
arXiv:1710.01808 [physics.soc-ph]

González-Villanueva, L. Zavala Sansón,  2015.

Tree-like branching networks and allometric laws.

Int. J. Complex Systems in Science, 5(1), 3741. pdf




Topographic waves

 Flores Vidal, X., R. Durazo, L. Zavala Sansón, P. Flament, C. Chavanne, F. J. Ocampo Torres, C. Reyes, 2014. Evidence of inertially generated coastal trapped waves in the Eastern Tropical Pacific. J. Geophys. Res. Oceans, 119, 3121-3133. pdf


Zavala Sansón, L. 2012. 
Simple models of coastal-trapped waves based on the shape of the bottom  topography.

J. Phys. Oceanogr., 42, 420-429.  pdf


Zavala Sansón, L., 2010.
Solutions of barotropic waves around seamounts.  
J. Fluid Mech., 661, 32-44.  pdf


Zavala Sansón, L.,  2010
Solutions of continental shelf waves based on the shape of the bottom  topography
The Ocean,The Wine and The Valley: The Lives of Antoine BadanChapter 2, p. 103-130. Editors: E. Pavía, J. Sheinbaum, J. Candela. CICESE, Ensenada, México.  pdf


topowaves
Analytical solutions of the relative vorticity and velocity fields of topographic waves around seamounts (Zavala Sansón, 2010).
Effects of topography on plankton dynamics

Zavala Sansón, L. and A. Provenzale,  2009. 
The effects of abrupt topography on plankton dynamics.
Theoret. Popul. Biol., 76, 258-267.  pdf


plancton
NPZ fields during the collision of a cyclonic vortex over a submarine mountain (Zavala Sansón and Provenzale, 2009).

2D and quasi-2D turbulence

Tenreiro, M., R. R. Trieling , L. Zavala Sansón, y G. J. F. van Heijst,  2013. 

Preferential states of rotating turbulent flows in a square container with a step topography. 

Phys. Fluids, 25, 015109.  pdf  

Tenreiro, M., Zavala Sansón, L., G. J. F. van Heijst and R. R. Trieling,  2010. 
Experiments and simulations on self-organization of confined quasi-two-dimensional turbulent flows with discontinuous topography.  
Phys. Fluids, 22, 025101.  pdf


Zavala Sansón, L., A. Gonzalez-Villanueva and L. M. Flores,  2010. 
Evolution and decay of a rotating flow over random topography.  
J. Fluid Mech., 642, 159-180.  pdf. 


Zavala Sansón, L. and J. Sheinbaum,  2008. 
Elementary properties of the enstrophy and strain fields in confined two-dimensional flows.  
Eur. J. Mech. B/Fluids, 27, 54-61.  pdf


pref

Long-term, mean spatial vorticity distribution of turbulent flows in the presence of a topographic step for geometries with different aspect ratios (Tenreiro et al. 2013).


 2dt-topo          2dt-vorf   

Left: Random bottom topography used in shallow-water simulations. Right: Long-term, quasi-steady state of the relative vorticity field of a freely-evolving flow over the topography. Note that cyclonic-red (anticyclonic-blue) vorticity lies over deeper-blue (shallower-red) regions (Zavala Sansón et al. 2010).


elem

Left: Vorticity surfaces calculated from a simulation in a squared domain with no-slip boundaries. Right: Corresponding surfaces of the (minus) Okubo–Weiss function (Zavala Sansón and Sheinbaum, 2008).

Tropical cyclones

Zavala Sansón, L.,  2004
The mechanical influence of continental topography on the trajectories of tropical cyclones 
near the west coast of México. 
Atmósfera, 17, 151-170.  pdf


Nonlinear Ekman effects - Theory, experiments and simulations

Zavala Sansón, L.,  2003
The two-dimensional character of spin-up in a rectangular container. 
Phys. Fluids, 15, 1811-1814.   pdf

Zavala Sansón, L.,  and G. J. F. van Heijst,  2002. 
Ekman effects in a rotating fluid over bottom topography. 
J. Fluid Mech., 471, 239-256.   
pdf

Zavala Sansón, L.,  2001
The asymmetric Ekman decay of cyclonic and anticyclonic vortices. 
Eur. J. Mech. B/Fluids, 20, 541-556.  pdf

Zavala Sansón, L., G. J. F. van Heijst y N. A. Backx, 2001. 
Ekman decay of a dipolar vortex in a rotating fluid. 
Phys. Fluids, 13, 440-451.   
pdf

Zavala Sansón, L., and G. J. F. van Heijst, 2000. 
Nonlinear Ekman effects in rotating barotropic flows. 
J. Fluid Mech., 412, 75-91.  
pdf



ek

Vorticity-transport function formulation of the shallow-water dynamics in a rotating system with variable topography and nonlinear Ekman effects (Zavala Sansón and van Heijst, 2002).

dip

Left: Deflected trajectory of a dipolar vortex due to nonlinear Ekman effects. Right: Straight trajectory when using linear Ekman damping (Zavala Sansón et al. 2001).

Experiments and simulations on rotating flows over variable topography


Zavala Sansón, L., y G. J. F. van Heijst, 2014.

Laboratory experiments on flows over bottom topography.

Modelling Atmospheric and Oceanic flows: insights from laboratory experiments and numerical simulations. Editors: T. von Larcher and P. Williams. Wiley. pdf


Zavala Sansón, L., A. Barbosa Aguiar and G. J. F. van Heijst,  2012.

Horizontal and vertical motions of barotropic vortices over a submarine mountain.

J. Fluid Mech., 695, 173-198.  pdf


Zavala Sansón, L. 2007. 
The long-time decay of rotating homogeneous flows over variable topography. 
Dyn. Atmos. Oceans, 44, 29-50.  pdf


Tenreiro, M., Zavala Sansón, L. and G. J. F. van Heijst,  2006. 
Interaction of dipolar vortices with a step-like topography. 
Phys. Fluids, 18, 056603.  pdf


Zavala Sansón, L.,  R. Serravall, G. F. Carnevale and  G. J. F. van Heijst,  2005. 
Experiments and simulations on coastal flows in presence of a topographic slope. 
J. Phys. Oceanogr., 35, 2204-2218. 
 pdf


Zavala Sansón, L.,  R. Serravall, G. F. Carnevale and  G. J. F. van Heijst,  2005. 
Experiments and simulations on coastal flows in presence of a topographic slope. 
J. Phys. Oceanogr., 35, 2204-2218. 
 pdf


Zavala Sansón, L.,  2002
Vortex-ridge interaction in a rotating fluid. 
Dyn. Atmos. Oceans, 35, 299-325. 
  pdf


Zavala Sansón, L., G. J. F. van Heijst and J. J. J. Doorschot, 1999. 
Reflection of barotropic vortices from a step-like topography. 
Il Nuovo Cimento C,  22, 909-929.  
pdf


seamounts

Relative vorticity measured in two laboratory experiments of cyclonic vortices (red surfaces) around a seamount in the Coriolis rotating platform at LEGI-Grenoble (Zavala Sansón et al., 2012).
Vortices against walls

Zavala Sansón, L., G. J. F. van Heijst and F. J. J. Janssen, 1999. 
Experiments on barotropic vortex-wall interaction on a topographic beta plane. 
J. Geophys. Res., 104, 10917-10932.  pdf

Zavala Sansón, L., F. Graef, and E. G. Pavía, 1998. 
Collision of anticyclonic, lens-like eddies with a meridional western boundary. 
J. Geophys. Res.,103, 24881-24890.  pdf