1 CODAR Archived DATA Image Information

Archived CODAR Data Image Information

Available Data Sets

Raw Surface Currents

These images are the unprocessed data measured by CODAR.

Tidal Surface Currents

These images represent the currents calculated using a least squares fit of the following regional tidal constituents to the raw data.

M₂ - Half a Lunar Day (Period = 12.42 Hours)

S₂ - Half a Solar Day (Period = 12.00 Hours)

N₂ - Larger Lunar Elliptic (Period = 12.66 Hours)

K₁ - Luni-Solar (Period = 23.93 Hours)

O₁ - A Lunar Day (Period = 25.82 Hours)

Detided Surface Currents

These images represent the currents that result from subtracting the tidal surface currents from the raw surface currents.

Low-pass Filtered Surface Currents

These images represent the currents calculated by applying a lowpass filter with a cutoff frequency of thirty hours to the detided velocity field. Therefore the currents contained in this field oscillate with a period greater than thirty hours.

High-pass Surface Currents

These images represent the currents that result from subtracting the low-pass filtered surface currents from the detided surface currents.

Surface Divergence

These images illustrate the divergence of the low-pass filtered data represented by the equivalent vertical velocity assuming a one meter thick surface layer. (Upward velocity indicates divergence and downward velocity indicates convergence.)

Surface Vorticity

These images illustrtate the vorticity of the low-pass filtered data normalized by the local Coriolis parameter (f).