CMS-Flow:Boundary Conditions: Difference between revisions

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The CMS follows the National Oceanographic and Atmospheric Administration (NOAA) National Ocean Service (NOS) convention for astronomical water level predictions. The water level predictions are based on a harmonic equation with several arguments
The CMS follows the National Oceanographic and Atmospheric Administration (NOAA) National Ocean Service (NOS) convention for astronomical water level predictions. The water level predictions are based on a harmonic equation with several arguments


{{Equation|<math> \eta =  \sum_{i=1}^N f_i A_i \cos (\omega_i t + V_{0i} + u_i - \kappa_i)  </math>|2=1}}
{{Equation|<math> \eta(t) =  \sum_{i=1}^N f_i A_i \cos (\omega_i t + V_{0i} + u_i - \kappa_i)  </math>|2=1}}


where <math>A</math> is the constituent ''mean '' amplitude, <math>f</math> is a factor that reduces the mean amplitude and varies in time, <math>V_0+u</math> are the constituents ''equilibrium '' phase and <math>\kappa</math> is the constituent phase lag or epoch.
where <math>A</math> is the constituent ''mean '' amplitude, <math>f</math> is a factor that reduces the mean amplitude and varies in time, <math>V_0+u</math> are the constituents ''equilibrium '' phase and <math>\kappa</math> is the constituent phase lag or epoch.

Revision as of 15:56, 19 May 2010

Water Level

Water Level and Current Velocity

Tidal Constituent

The CMS follows the National Oceanographic and Atmospheric Administration (NOAA) National Ocean Service (NOS) convention for astronomical water level predictions. The water level predictions are based on a harmonic equation with several arguments

  (1)

where is the constituent mean amplitude, is a factor that reduces the mean amplitude and varies in time, are the constituents equilibrium phase and is the constituent phase lag or epoch.


Symbol Description
Time
Constituent amplitude
Constituent nodal factor
Constituent equilibrium argument
Constituent equilibrium argument
Constituent phase or epoch

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