Lagrangian analysis is the use of Lagrangian coordinates to analyze various problems in continuum mechanics.

Lagrangian analysis may be used to analyze current

Fluid dynamics

In physics, fluid dynamics is a sub-discipline of fluid mechanics that deals with fluid flow—the natural science of fluids in motion. It has several subdisciplines itself, including aerodynamics and hydrodynamics...

s and flow

Fluid dynamics

In physics, fluid dynamics is a sub-discipline of fluid mechanics that deals with fluid flow—the natural science of fluids in motion. It has several subdisciplines itself, including aerodynamics and hydrodynamics...

s of various materials by analyzing data collected from gauges/sensors embedded in the material which freely move with the motion of the material. A common application is study of ocean current

Ocean current

An ocean current is a continuous, directed movement of ocean water generated by the forces acting upon this mean flow, such as breaking waves, wind, Coriolis effect, cabbeling, temperature and salinity differences and tides caused by the gravitational pull of the Moon and the Sun...

s in oceanography

Oceanography

Oceanography , also called oceanology or marine science, is the branch of Earth science that studies the ocean...

, where the movable gauges in question called Lagrangian drifter

Lagrangian drifter

Lagrangian drifters are drifters designed to aid the Lagrangian analysis of water currents Numerous types of drifters are designed with constructions particularly suited for particular areas of application: coastal currents, deep water/shallow water currents, etc....

s.

Recently, with the development of high speed cameras and particle-tracking algorithms, there have also been applications to measuring turbulence.