Wave analysis of the North Indian Ocean from 1957 to 2002
Characteristics of waves from Sep. 1957 to Aug. 2002 in the North Indian had been analyzed, on the basis of WAVEWATCH - Ⅲ drived with ERA- 40 sea-surface wind field. The North Indian monsoon was affected mainly by winter and summer. Wave-heights in summer were obviously higher than those in other seasons. Year-averages of surface winds or wave-heights were slowly increasing in the North Indian, 1958~2001. The cycles of 2.36-5.2 years of sea-surface winds and wave-heights were the same, and so were the cycles of longer than 26 years. In the North Indian, saltation with year-average of surface winds and wave-heights were similar to winter in the early 1980s.