Reza Gharangian - M.S. Graduate, Tarbiat Modares University;
Mehdi Shafieefar - Professor, Faculty of Civil Engineering, Tarbiat Modares University;
Roozbeh Panahi - Assistant Professor, Faculty of Civil Engineering, Tarbiat Modares University;

The objective of present paper is to announce an appropriate unidirectional wave spectrum model for Chabahar bay at the north of oman sea. primitive investigations had been conducted on the field data, showing that they may suffer unphysical data. Hence, in the first step, using known methods the errors were discovered and modified. Then, Theresearch is concentrated on appraisal of standard wave spectrum models in the region. wave spectrum models such as JONSOWAP, PM, Ochi-Hubble and ITTC indicated that considering standard coefficient, Ochi-Hubble spectrum is not appropriate for field spectrums with two peaks. Also it was seen that ITTC model demonstrates a great fit with field spectrums that have one peak. Then by using GRG nonlinera method coefficients were proposed for ITTC and Ochi- Hubble models in order to increase their accuracy.

Chabahar bay; Oman Sea; JONSWAP; ITTC; P-M; Ochi-Hubble