Program Decomp v.15, calculation of reflection
11-Jun-2017 12:30:23

*************Input values******************
Input file: 1415064.ASC
Time step in input file:       0.0100 s


Time interval asked:                      420.0000,    -1.0000
Time interval used:                       420.0000,  1689.5900
Time step used:                             0.0100 s

Number of samples used:                   126960

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):      0.64      0.64      0.64

Depth profile:

x_pos (m):            0.00      0.29      0.67      1.20
waterdepth (m):       0.64      0.64      0.64      0.64
*********************************************

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:         0.00079 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:
                          0.398,     1.680 Hz
Frequency range of ideal Jonswap spectrum of Tp =   1.55 s
  and thresh     0.0050 x max(E):
                          0.410,     1.880 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):                                  0.1547      0.1569      0.1392  
var (m^2):                             1.3839e-03  1.5067e-03  1.4421e-03  
Hm0 (m)                                   0.14880     0.15527     0.15190  


*********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:        0.3982 -   1.6797 Hz
                                          ch2        ch3        ch4     
m0 (m^2)                               1.3355e-03  1.4570e-03  1.4017e-03  
m2 (m^2/s^2)                           8.7440e-04  9.3408e-04  8.7145e-04  
m4 (m^2/s^4)                           8.1809e-04  8.5406e-04  7.5992e-04  

--- Peak Information from averaged spectra ---
                                          ch2        ch3        ch4     
   threshold 80% fpD (Hz):                0.6736     0.6408     0.6644 
   threshold 80% TpD (s):                 1.4845     1.5605     1.5051 

Max spectral density (m^2/Hz):         5.1464e-03 7.4281e-03 9.0138e-03 
within frequency range
                   fpmin (Hz):             0.7030     0.6408     0.6719 
                   fpmax (Hz):             0.7187     0.6564     0.6876 
within periods
                    Tpmin (s):             1.3915     1.5234     1.4544 
                    Tpmax (s):             1.4224     1.5605     1.4883 

-----------derivated PERIOD values------------
Average zerocrossing period T0,1 (s)       1.2847      1.2974      1.3128  
                            T0,2 (s)       1.2359      1.2489      1.2683  
Average period local maxima T2,4 (s)       1.0338      1.0458      1.0709  
Narrowness Parameter Eps2                  0.2839      0.2813      0.2672  
Broadness Factor Eps4                      0.5479      0.5466      0.5358  
kappa                                      0.5407      0.5568      0.6171  
gamma                                      0.3912      0.4118      0.4812  
Hm0                                       0.14618     0.15268     0.14976  


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

frequency range used in calculation of reflection:
                        0.3982 -   1.6797 Hz

--- Peak Information from averaged spectra ---
   threshold 80% fpD (Hz):                0.6648 
   threshold 80% TpD (s):                 1.5043 

Max spectral density (m^2/Hz):         6.5657e-03 
within frequency range
                   fpmin (Hz):             0.6719 
                   fpmax (Hz):             0.6876 
within periods
                    Tpmin (s):             1.4544 
                    Tpmax (s):             1.4883 


Sum of variance densities:
  over spectrum part used in graphs (10% more than used in calc. of moments)
Incident (m^2):  1.3301e-03
Reflected (m^2): 9.1927e-05


Moments of incident and reflected wave

m0 of incident wave:   1.3271e-03 m^2
m0 of reflected wave:  9.0172e-05 m^2
Hm0 of incident wave:   0.14572 m
Hm0 of reflected wave:  0.03798 m

Reflection coefficient:   0.2607