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Related Experiment Video

Updated: Apr 27, 2026

Trajectory Data Analyses for Pedestrian Space-time Activity Study

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Published on: February 25, 2013

Emergence of spatiotemporal dislocation chains in drifting patterns.

M G Clerc¹, C Falcón¹, M A García-Ñustes²

¹Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla, 487-3 Santiago, Chile.

Chaos (Woodbury, N.Y.)

|July 3, 2014

Summary

This summary is machine-generated.

Complex spatiotemporal dynamics in one-dimensional patterns arise from phase instability and inhomogeneous advection. This leads to perpetual dislocation chains, observed in optical and granular systems.

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Area of Science:

Physics
Nonlinear Dynamics
Complex Systems

Background:

One-dimensional patterns exhibit complex spatiotemporal dynamics under external forces.
Spatiotemporal dislocation chains are a key feature of these dynamics.

Purpose of the Study:

To explain the universal mechanism behind the emergence of spatiotemporal dislocation chains.
To verify this mechanism in different physical systems.

Main Methods:

Utilized a universal amplitude equation for drifting patterns.
Performed numerical simulations on an optical feedback system.
Conducted experimental studies on a granular system.

Main Results:

Identified phase instability and inhomogeneous advection as the driving forces.
Confirmed the emergence of dislocation chains in numerical simulations.
Observed the phenomenon experimentally in a granular medium.

Conclusions:

The universal mechanism explains spatiotemporal dislocation chains in diverse systems.
Phase instability coupled with advection drives complex pattern dynamics.
Findings applicable to optical and granular physics.