Program Decomp v.15, calculation of reflection
11-Jun-2017 12:31:44

*************Input values******************
Input file: 1421247.ASC
Time step in input file:       0.0100 s


Time interval asked:                      420.0000,    -1.0000
Time interval used:                       420.0000,  1856.6300
Time step used:                             0.0100 s

Number of samples used:                   143664

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):      0.47      0.47      0.47

Depth profile:

x_pos (m):            0.00      0.29      0.67      1.20
waterdepth (m):       0.47      0.47      0.47      0.47
*********************************************

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:         0.00070 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:
                          0.274,     1.555 Hz
Frequency range of ideal Jonswap spectrum of Tp =   2.33 s
  and thresh     0.0050 x max(E):
                          0.270,     1.250 Hz


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

moments of time signal and of var. density spectrum at wave gauges:
                                          ch2        ch3        ch4     
mean (m):                                 -0.0160     -0.0130     -0.0203  
var (m^2):                             1.4334e-03  1.3554e-03  1.5168e-03  
Hm0 (m)                                   0.15144     0.14727     0.15579  


*********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:        0.2736 -   1.5547 Hz
                                          ch2        ch3        ch4     
m0 (m^2)                               1.3771e-03  1.3025e-03  1.4719e-03  
m2 (m^2/s^2)                           5.6295e-04  5.1668e-04  5.4512e-04  
m4 (m^2/s^4)                           3.9998e-04  3.7599e-04  3.7769e-04  

--- Peak Information from averaged spectra ---
                                          ch2        ch3        ch4     
   threshold 80% fpD (Hz):                0.5074     0.4447     0.4608 
   threshold 80% TpD (s):                 1.9710     2.2487     2.1700 

Max spectral density (m^2/Hz):         6.3870e-03 4.8652e-03 9.4006e-03 
within frequency range
                   fpmin (Hz):             0.5000     0.4063     0.4530 
                   fpmax (Hz):             0.5156     0.4220     0.4686 
within periods
                    Tpmin (s):             1.9395     2.3698     2.1340 
                    Tpmax (s):             2.0001     2.4609     2.2076 

-----------derivated PERIOD values------------
Average zerocrossing period T0,1 (s)       1.6683      1.7044      1.7614  
                            T0,2 (s)       1.5641      1.5877      1.6432  
Average period local maxima T2,4 (s)       1.1864      1.1723      1.2014  
Narrowness Parameter Eps2                  0.3711      0.3904      0.3861  
Broadness Factor Eps4                      0.6517      0.6744      0.6823  
kappa                                      0.4724      0.4597      0.5472  
gamma                                      0.3313      0.3119      0.4076  
Hm0                                       0.14844     0.14436     0.15346  


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

frequency range used in calculation of reflection:
                        0.2736 -   1.5547 Hz

--- Peak Information from averaged spectra ---
   threshold 80% fpD (Hz):                0.4765 
   threshold 80% TpD (s):                 2.0986 

Max spectral density (m^2/Hz):         8.2555e-03 
within frequency range
                   fpmin (Hz):             0.4686 
                   fpmax (Hz):             0.4843 
within periods
                    Tpmin (s):             2.0650 
                    Tpmax (s):             2.1338 


Sum of variance densities:
  over spectrum part used in graphs (10% more than used in calc. of moments)
Incident (m^2):  1.3476e-03
Reflected (m^2): 1.5113e-04


Moments of incident and reflected wave

m0 of incident wave:   1.3453e-03 m^2
m0 of reflected wave:  1.4879e-04 m^2
Hm0 of incident wave:   0.14671 m
Hm0 of reflected wave:  0.04879 m

Reflection coefficient:   0.3326