Comparison of Analysis Methods for Propagation Direction of Pressure jump in Yellow Sea and East China Sea
Chan Kyu Lee1, Seung-Buhm Woo1, Myung-Seok Kim2, Hyo-Keun Kwon3, Hyunsu Kim4 and Byung IL Yoon1, (1)Inha University, Incheon, Korea, Republic of (South), (2)Inha University, Oceanography, Incheon, South Korea, (3)Korea Water Resources Corporation, Korea, Incheon, South Korea, (4)Pusan National University, Busan, Korea, Republic of (South)
Abstract:
Recenly, it is reported that so-called meteo-tsunami was generated in the Yellow Sea, which is caused by the propagation of atmospheric pressure jump. For predicting the meteo-tsunami attack, It is important to figure out the propagation direction and speed atmospheric pressure jump. To find the most optimized method for estimating propagation direction and speed of atmospheric pressure jump, three method was applied and compared in Yellow Sea and East China Sea (Figure 1a ). When using the MPA (Meteo-Tsunami Propagation Algorithm), it need to be improved due to incorrect speed and arrival time (Figure 1b, 1c, 1d). Currently, when the MPA method is propagated in the Yellow Sea coast at the same speed, the meteorological tsunami and pressure jumps, Using the difference in the shallow water wave speed and time lag in each AWS (Automatic Weather System) presents a propagation direction. Three methods (MPA (Meteo-Tsunami Propagation Algorithm) uses a shallow water wave speed and reach time, IAM (Isochronal Analysis Method) uses a the estimated arrival times and the measured arrival times, PTM (Pressure Tendency Method) uses a propagation of pressure jump and AWS coordinates (Figure 1)) using the propagation velocity and calculating the arrival time of the simulated pressure jump to A, and will be able to present an improved methodology through the benefits and drawbacks. Using the improved methods would be able to minimize the damage caused by meteo-tsunami.
