اثر جريانات ناشي از باد بر تشكيل كانال هاي صوتي در خليج فارس

Effects of wind driven currents on sound channel in Persian Gulf

We use ROPME sea area cruise data in summer 2001 and wind velocity and direction data on august 2001 in different stations in northern part of Persian Gulf for surveying and research. Sound velocity analysis and wind driven current vector plots are drawn by MATLAB version 7.1. Wind driven currents and underwater sound transmission interaction are surveyed with these graphs and Ekman theory. Results show that current intensity and sound speed decreases with increasing in mixed layer depth and a shallow channel engender between surface and bottom in northern part of Persian Gulf. If current and line which connects source and receiver are in a same direction then sound signal invigorates in other word sound intensity increases. If current direction be in opposite direction then sound signal attenuate and sound intensity decreases.