EXAMINATION OF OCEAN WIND ESTIMATING TECHNIQUE USING SMB METHOD AND TOBA 3/2-POWER LAW

Abstract

 There are many kinds of currents due to tides, wind, wave as well as tsunamis. Especially, wind-driven currents may be important for coastal currents in the ocean. Wind driven-currents are nostationary phenomena in time and space. Therefore, the grasps of wind-driven currents are important. It is necessary to observe velocity of currents temporally and spatially due to estimate wind-driven currents. However, it is difficult to observe spatial distributions of current velocity and ocean winds by current meter and anemometer of stationary type. HF radar can be observed spatial distributions of current velocity. Although ocean winds cannot be measured directly by HF radar, it is possible to estimate using wave height, wave period, and the Sverdrup-Munk-Bretschneider's (SMB) method and Toba 3/2-power law, It is very significant.
 In this study, ocean winds were estimated by obtained wave height and period from NOWPHAS and SMB method and Toba 3/2-power law. Toba 3/2-power law method was good agreemnt in seven points.