The sound velocity c and the sound attenuation coefficient
[alpha] are substance-specific pressure- and temperature-dependent parameters.
Measurements of the effective attenuation coefficient
were reported by Davis  in his extensive study of the dosimetry of these sources.
The diffuse attenuation coefficient
for the PAR region (400-700 nm), [K.
We used the results of the underwater quantum irradiance for estimating the widely used diffuse attenuation coefficient
Estimating the diffuse attenuation coefficient
from optically active constituents in UK marine waters.
6 presents the values of the longitudinal sound wave attenuation coefficient
separately for fibreglass and foam polystyrene.
With these results a multiple regression is performed to obtain a equation relating amplitude of signal (A), reflection coefficient (Rc), attenuation coefficient
(Ac) and RMS of the reflected waveform (Rs) with surface roughness (Ra).
Although the mass attenuation coefficient
should theoretically be a constant material property, the calibrations yielded slightly different values for each radiation source.
2d, it can be seen that the PAR attenuation coefficient
vertically averaged attenuation coefficient
of light in the ice cover ([K.
The correlation between TU and the linear attenuation coefficient
of the different materials utilised for the CT calibration showed that a linear regression ([r.
Along these ray-paths the reflection/transmission coefficients encountered at various interfaces and the effective attenuation coefficient
are calculated, using conductive-dissipative electromagnetic propagation theory (Jackson 1977).