ctdproc.proc.wsink

ctdproc.proc.wsink(p, Ts, Fs)[source]

Compute sinking velocity from pressure record.

Computes the sinking (or rising) velocity from the pressure signal p by first differencing. The pressure signal is smoothed with a low-pass filter for differentiation. If the input signal is shorter than the smoothing time scale, w is taken as the slope of the linear regression of p.

Adapted from wsink.m - Fabian Wolk, Rockland Oceanographic Services Inc.

Parameters:

p (array-like) – Pressure [dbar]
Ts (float) – Smoothing time scale [s]
Fs (float) – Sampling frequency [Hz]

Returns:

w – Sinking velocity [dbar/s]

Return type:

array-like