Acknowledgements

c. It is most important to notify inhabitants immediately that meteotsunamis are predicted to approach the coasts, using a community wireless system and speakers, or door-to-door visits. The prediction of disasters including meteotsunamis is probabilistic, commonly without high accuracy in their parameters, such that education to increase public awareness about disaster prevention is essential. It is crisis management that covers all the cases,

The waterproof walls equipped at Kinki Area Seaside Disaster Prevention Center in Osaka Prefecture, Japan. The wall panels can be carried and set at places where waterproof is supposed to be required. In case shown in

First, the generation and propagation of long ocean waves due to the

atmospheric-pressure variation were simulated using the numerical model based on the nonlinear shallow water equations, where the atmospheric-pressure waves of four pressure-profile patterns traveled eastward over East China Sea, as well as the atmospheric-pressure waves that caused the large harbor oscillation in Urauchi Bay on February 25, 2009. The wave height of the long waves increased as the moving velocity of the pressure-recovery point was close to that of the long ocean waves. Before the oscillation attenuation in Urauchi Bay, the incidence of long waves can continue owing to an oscillation system generated between the main island of

Second, the simple estimate equations were proposed to predict both the wave

atmospheric-pressure data concerning the pressure profile of atmospheric-pressure waves or the recovery rate of atmospheric pressure in the ocean, without complicated calculation. The estimated values for both the wave height and wavelength of the long ocean waves showed good agreement with the corresponding computational data. Third, numerical simulation was generated for the oscillation in the harbors of various shapes. The amplification factor at the head of the L-type harbor for the second mode increased, as its bending position was nearer to the harbor mouth. As

height and wavelength of severe meteotsunamis, using observed or GPV

whether the boy who cries wolf is right or not.

the figure, the panels are piled up in front of the doors, using frames.

Natural Hazards - Risk, Exposure, Response, and Resilience

8. Conclusions

106

Figure 38.

Kyushu and Okinawa Trough.

Sincere gratitude is extended to Satsumasendai City Office for providing the photographs shown as Figures 2 and 3. I also express my gratitude to Mr. Kosuke Fukita, Mr. Soichiro Hidaka, Mr. Taisuke Inoue, Mr. Hiroyuki Matsukawa, Mr. Shota Minami, Mr. Yuki Suetsugu, Mr. Taishi Toyofuku, and Dr. Kei Yamashita, who contributed to the numerical simulation, etc., when they were student members of our laboratory. I am grateful to the reviewer for suggestive comments on countermeasures against meteotsunamis. This work was supported by JSPS Grantin-Aid for Scientific Research (C) Grant Number JP17K06585.
