Evaluate changes in wind wave height at different return periods and statistical distribution
الموضوعات : Irrigation and Drainageرضا نائبی 1 , مرتضی بختیاری 2 , مسعود صدری نسب 3 , نیما شهنی کرم زاده 4
1 - کارشناس ارشد مهندسی سواحل
2 - گروه مهندسی رودخانه و سواحل دانشگاه علوم و فنون دریایی خرمشهر، خرمشهر، ایران
3 - گروه محیط زیست، دانشگاه تهران، تهران، ایران.
4 - گروه مهندسی رودخانه و سواحل دانشگاه علوم و فنون دریایی خرمشهر، خرمشهر، ایران.
الکلمات المفتاحية: ارتفاع امواج, دوره بازگشت و نرم افزار 21 MIKE,
ملخص المقالة :
Waves are main characteristics of seas that produce by wind. Importance of the study of waves and recognizing the wave climate in the coastal zone management that the waves are the most important influence on the design and implementation of all projects. Wave are main boundary condition in dynamic loading and structural calculations and hydraulic coastal structures. Height of waves are the most important wave parameters can be affected by various factors change. In present study evaluate changes of this parameters in return periods 2, 5,10,25,50 and 100 years based on statically distribution and bed roughness coefficient. In order to study use mike21 study. The result showed that bed roughness has important significant effects on the reduction or increase of the wave’s height. The analysis was performed according to the return period for the design show that 50 and 100 years. In this return periods have different prior and subsequent periods have been even more. The results also show coefficients of each wave changes substrate design 2-year-old to 200 years old in about 7 to 10 cm.
