Typhoons have often raged through the Kyushu district, causing a great deal of damage by accompanying storm surges. In recent years, due to global warming, the concern is getting heightened about storm surge disasters which may be caused by typhoons stronger than ever. Therefore, it is important to estimate the possible typhoon strength that might occur in the future. However, it seems inadequate to use the future MRI-AGCM3.2S Data directly for the estimation of future storm surge anomalies since the present MRI-AGCM3.2S Data overestimates the strength of typhoons that hit Japan compared with the RMSC Best Track(BT) Data.
 In this study, I proposed the methods for estimating future typhoon strength on the basis of the comparison of the accumulative distribution functions of lowest atmospheric pressure of each typhoon included in MRI-AGCM3.2S and the BT.
 The first method is the one in which the correction coefficient α is deduced by comparing AGCM (present) and the BT in order to correct the atmospheric pressure data of AGCM (future) with α. The second method is the one in which the correction coefficient β is deduced by comparing AGCM (present) and AGCM(future) in order to correct the atmospheric pressure data of BT as the future estimates by multiplying β.
 Moreover, I applied these methods to one of the strongest typhoons that hit the Ariake Sea in the AGCM(future) Data. Then, I calculated the storm surge in the Ariake Sea with FVCOM by applying the corrected atmospheric pressure by the above methods. As a result of the case using the first method, it is found that the maximum storm surge anomaly at the innermost area in the Ariake Sea still exceeds the designed level (2.31m) although the anomaly is decreased by the proposed method from 5.1m to 2.8m.

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 Typhoon Yolanda made landfall in Leyte Island at near peak strength, with maximum sustained wind speeds of 160 knots, the largest in the recorded history of the Western North Pacific. Yolanda approached very quickly with a forward speed of 41km/hr towards Leyte, which was also the largest among typhoons with similar intensities. As a result of these extreme gusts and the exceptionally low central pressure of the typhoon, Yolanda caused the largest storm surge in the recorded history of Philippines. The spatial distribution of storm surges occurred in Leyte Gulf shows reasonable agreement between the field survey conducted by the authors and the storm surge simulation with an empirical typhoon model.

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 In November 2013, Typhoon Yolanda (Haiyan) struck the central part of the Philippines and caused severe damage to coastal areas due to storm surge and strong wind. In this paper, the results of the field survey conducted one month after the disaster were summarized. Storm surge heights were more than 5 m along the inner part of Leyte Gulf, and severe damage was observed in the areas where storm surge heights were more than 3 m. One of the characteristic features of this disaster was devastating storm surge induced by rapid change of wind direction.

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 In November 2013, Typhoon Yolanda (Haiyan) struck the central part of the Philippines and caused devastating damage to coastal settlements and infrastructure. The authors conducted a field survey about one month after the disaster to understand the behavior of government authorities and local residents during the event, by gathering existing information and interviewing local residents and officials, mainly in the islands of Layte and Samar. The main conclusions of the analysis carried out can be summarized as follows: 1) the government disseminated information, including a disaster warning and evacuation instructions, in line with the rules preset by the government, however, 2) there was an issue on the information dissemination through the government channel, 3) there was also some issues related to the level of knowledge and awareness by local residents on what is a “storm surge”, the threat it posed, and the necessity for evacuation, and 4) the present study indicates that it is necessary to inform the public more clearly and realistically about the exact nature of the disaster phenomenon.

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 The request for the power generation technology using renewable energy has been greatly increasing because of the influence of the nuclear plant accident caused by the Great East Japan Earthquake. Many efforts on the utilization of offshore energy such as wave power generation have been carried out so far, and some of them have already been put to practical use in Europe and the United States. On the other hand, in Japan, the full-scale practical use of power generation has hardly been made because of the problems of power generation costs. However, the power generation technology using offshore renewable energy has been revalued in Japan after the Great East Japan Earthquake.
 In this special session, the present situation of the latest examples in and outside Japan was reviewed regarding the power generation technology using offshore renewable energy. In addition, the subjects on technology development needed for advancing the practical use of such the power generation technology in our country were discussed.

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 The Great East Japan Earthquake generated a huge tsunami and accident of nuclear power plant which caused drastic changes of coastal environments. It is necessary to clarify the current situation of water quality and ecosystem in coasts after the tsunami and discuss the countermeasures for improvement of coastal environments.
 For this purpose, in the special session, field studies for the variations of coastal environments due to the tsunami were reviewed. The environmental impacts due to the tsunami on water and sediment qualities and ecosystem were discussed. Importance for continuous monitoring of coastal environments during a long time is again recognized.

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