Data Dictionary
The following describes the column headings used in the 4 data files with names in the form

x.yHz-WavelengthMeasuredvsPredicted.xlsv
Each spreadsheet has two tabs:


one named in the form x.yHz which contains actual observed data from the tank characterisation activity
one named in the form x.y Hz wavelength which contains the calculated wavelength using the formula
λ=gT2/2π – (from extract of ‘Wave Mechanics for Ocean engineering’ by Paolo Bocotti)
The data dictionary below describes the meaning of each of the fields on each tab
x.yHz
Field name
(concise)
time [s]
PROBE 1 [mm]
Field name
(verbose)
Elapsed time in seconds
Water depth at probe 1 in
millimetres
PROBE 2 [mm]
Water depth at probe in
millimetres
Chart 1
Chart 2
Description
Elapsed time since experiment commenced
Water depth given by the first of 2 MST probes with
magnetic floats which are separated by a distance of
1.6 metres. Probes give wave amplitude at two
different points in the tank.
Water depth given by the second of 2 MST probes
with magnetic floats which are separated by a
distance of 1.6 metres. Probes give wave amplitude at
two different points in the tank.
Shows phase relationship between multiple waveforms
at each of the two probes
Shows phase relationship between a single waveform
at each of the two probes
x.y HZ wavelength
Field name
(concise)
d
Field name
(verbose)
Water depth (m)
F
T
g
L
Frequency (Hz)
Period of waveform (s)
Gravitational constant
Wavelength in shallowing
water
x=d/L
Ratio of depth to
wavelength in shallowing
water
Wavelength in deep
water
Ratio of depth to
wavelength in deep water
L0
d/L0
Description
Wave height held constant at a characteristic height
for a given paddle frequency
Frequency of the waveform as set by paddle frequency
Period of the waveform ie reciprocal of frequency
The universal gravitational constant ie 9.81 m/s2
This is an incrementing value starting at a value 0f 0.5
metres and increasing by 0.025 at each increment until
the value of L is approximately equal to the calculated
value for L0
Deep water being defined as water depth is greater
than a quarter wavelength at the selected frequency.
Calculated Wavelength given by formula λ=gT2/2π
Ratio of wave height to wavelength in deep water
using calculated value for wavelength