Program Decomp v.15, calculation of reflection
11-Jun-2017 12:38:46

*************Input values******************
Input file: 0811356.ASC
Time step in input file:       0.0100 s


Time interval asked:                      420.0000,    -1.0000
Time interval used:                       420.0000,  1660.7900
Time step used:                             0.0100 s

Number of samples used:                   124080

Channels used:

cols:                   2         3         4
pos (m):             0.00      0.29      0.67
scale to m:        0.0250    0.0250    0.0250
waterdepth (m):      0.56      0.56      0.56

Depth profile:

x_pos (m):            0.00      0.29      0.67      1.20
waterdepth (m):       0.56      0.56      0.56      0.56
*********************************************

Program Decomp15, calculation of reflection
*****************Method********************
Spectra calculated as sum over frequency bands
Kr from Er/Ei; m0i and m0r from Ei en Er;
Hm0i and Hm0r from m0i en m0r

Frequency step:         0.00081 Hz
Threshold used to calculate TpD and spectral moments
                         0.0050 x max(E)
Frequency resolution in average spectrum
                          0.016 Hz
Default frequency range defined by FN_freqs:
                          0.000,     2.500 Hz
Frequency range according to threshold in spectrum of data file:
                          0.570,     2.258 Hz
Frequency range of ideal Jonswap spectrum of Tp =   1.16 s
  and thresh     0.0050 x max(E):
                          0.540,     2.510 Hz


!!!!!!!!!!!!!!!!!!! WARNING !!!!!!!!!!!!!!!!!!!!!!
* Freq-range of Jonswap spectrum according to threshold not covered
* by freq-range in spectrum of measurements with same threshold
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


*********Values calculated fom time signal********

moments of time signal and of var. density spectrum at wave gauges:
                                          ch2        ch3        ch4     
mean (m):                                 -0.0072      0.0008     -0.0189  
var (m^2):                             4.5436e-04  4.3720e-04  4.0709e-04  
Hm0 (m)                                   0.08526     0.08364     0.08071  


*********Values calculated fom spectra*********

----moments from spectra in region where equations are valid
density >= 0.0050 x max(E) ---

frequency range used in calculation of moments of 
individual wave gauges:        0.5702 -   2.2578 Hz
                                          ch2        ch3        ch4     
m0 (m^2)                               4.4414e-04  4.2740e-04  3.9832e-04  
m2 (m^2/s^2)                           5.0291e-04  4.8482e-04  4.4362e-04  
m4 (m^2/s^4)                           7.9860e-04  7.7129e-04  6.9091e-04  

--- Peak Information from averaged spectra ---
                                          ch2        ch3        ch4     
   threshold 80% fpD (Hz):                0.9209     0.8896     0.8984 
   threshold 80% TpD (s):                 1.0859     1.1241     1.1131 

Max spectral density (m^2/Hz):         2.3381e-03 1.4087e-03 2.0100e-03 
within frequency range
                   fpmin (Hz):             0.9061     0.8279     0.8751 
                   fpmax (Hz):             0.9217     0.8436     0.8907 
within periods
                    Tpmin (s):             1.0849     1.1854     1.1227 
                    Tpmax (s):             1.1036     1.2078     1.1427 

-----------derivated PERIOD values------------
Average zerocrossing period T0,1 (s)       0.9737      0.9732      0.9813  
                            T0,2 (s)       0.9398      0.9389      0.9476  
Average period local maxima T2,4 (s)       0.7936      0.7928      0.8013  
Narrowness Parameter Eps2                  0.2711      0.2726      0.2690  
Broadness Factor Eps4                      0.5357      0.5357      0.5338  
kappa                                      0.5756      0.5577      0.5715  
gamma                                      0.4359      0.4168      0.4338  
Hm0                                       0.08430     0.08269     0.07983  


*********Calculation of reflection*********

frequency range used in calculation of reflection:
                        0.5702 -   2.2578 Hz

--- Peak Information from averaged spectra ---
   threshold 80% fpD (Hz):                0.8989 
   threshold 80% TpD (s):                 1.1125 

Max spectral density (m^2/Hz):         1.6572e-03 
within frequency range
                   fpmin (Hz):             0.9061 
                   fpmax (Hz):             0.9217 
within periods
                    Tpmin (s):             1.0849 
                    Tpmax (s):             1.1036 


Sum of variance densities:
  over spectrum part used in graphs (10% more than used in calc. of moments)
Incident (m^2):  4.0585e-04
Reflected (m^2): 2.0072e-05


Moments of incident and reflected wave

m0 of incident wave:   4.0469e-04 m^2
m0 of reflected wave:  1.9776e-05 m^2
Hm0 of incident wave:   0.08047 m
Hm0 of reflected wave:  0.01779 m

Reflection coefficient:   0.2211