ANALYSING THE WAVE SPECTRUM FOR THE PERSIAN GULF IN ...

صفحه 177
چهاردهمين كنفرانس ژئوفيزيك ايران
.
.
0.34
9.5Hs
f
4.5H f
2 4
s p
It has been found that by modifying the peak enhancement factor, γ, in Ochi formula as mentioned
in equation #4 the measured spectrum will fit better with the modified JONSWAP wave spectrum.
0.34
7.5H
s
f p
(4)
Figure #6 shows the measured and parameterized wave spectrums for one of the stations during the
most severe storms in 2008 -2009.
p
Figure 5- Comparison of Standard Spectral
Formulations with the Measured Spectra in the AQ1
station
.
Figure6 - Measured and parameterized wave spectra
for the most severe sea state measured at the shallow
water location, AQ1. Date 30.11.2008, Hs =0.97 m,
Tp=4.75 s, HsDir=172.69°
In this study six measured wave stations were considered to study the wave spectrum in Persian
Gulf. Based on In order to find a general formula which can describe the wave spectrum in Persian
Gulf, more measured wave data from other locations in Persian Gulf will be required. The outcomes
of this study should be checked by other measured wave data in order to verify the suggested wave
spectrum in Persian Gulf.
Therefore, further studies and investigations will be required.
5. REFERENCES
1. V. Sanil Kumar, K.A.K., Spectral characteristic of high shallow water waves. Ocean Engineering, 2008. 35.
2. Chakrabarti, S.K., Handbook of Offshore Engineering. Ocean Engineering Series. Vol. 1. 2005, Amsterdam:
Elsevier.
3. Hasselmann, Measurment of wind wave growth and swell decay during the Joint North Sea Wave Project
(JONSWAP). Deutsche Hydrographische Zeitschrift, 1973. A 12: p. 95.
4. Ochi, M.K., Hubble, E.N. One six parameter wave spectra. in Proceeding of the 15th Coastal Engineering
Conference. 1976. New York: ASCE.
5. Ochi, M.K. On hurricane-generated seas. in Proceeding of the Second International Symposium on Ocean Wave
Measuremnet and Analysis 1993. New Orleans: ASCE.
6. Young, I.R., Observation of the spectra of hurricane generated waves. Ocean Engineering, 1998. 25: p. 261-276.
7. J.M.J. Journee, W.W.M., Offshore Hydrodynamics. first ed. 2001: Delft University of Technology.
8. Sorensen, R.M., Basic Coastal Engineering. Third ed. 2006: Springer.
9. Holthuijsen, L.H., Waves in Oceanic and Coastal Waters. 2007, New York: Cambridge university press.