著者

山本 吉道 ウッチャン ウィブール 有川 太郎

出版者

Japan Society of Civil Engineers

雑誌

海岸工学論文集 (ISSN:09167897)

巻号頁・発行日

vol.55, pp.301-305, 2008

被引用文献数

2

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The following improvements on tsunami damage predicting are examined in order to decrease the tsunami damage: 1) It is checked that the destructive evaluation of buildings of a wide area due to tsunami can be efficiently performed with the numerical model which can calculate a flood of only land area with good accuracy and the gate type Rahmen model. 2) The limit of inundation height that human-beings can stand up to tsunami is obtained using data of a large-scale model experiment. This limit is determined by a slide and changes in the range of 20cm-40cm with sex and height. 3) When the overflow of tsunami occurs on the land area of a steep slope, a strong back-flow will occur. Therefore, a calculating method which can be used for the stable examination against it is also proposed.

著者

山本 吉道 ウィブール ウッチャン 飯田 邦彦 河合 恭平

出版者

Japan Society of Civil Engineers

雑誌

海洋開発論文集 (ISSN:09127348)

巻号頁・発行日

vol.23, pp.81-86, 2007

被引用文献数

1

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We tried to devise a method for estimating the degree and geographic extent of tsunami damage using satellite photographs in two case studies of damage to Thailand's west coast due to the Indian Ocean tsunami. Following results were obtained from those case studies: the extent of a flood area can be generally estimated from discoloration of vegetation zone assuming such vegetation originally existed along the coast; house damage could be estimate by deciphering whether each roof was lost or not, however if the roof remained, the degree of damage to walls and pillars could not be discerned.<BR>Therefore, we develop a method to get marginal thickness of walls and marginal width of pillars which break on arbitrary positions using a distribution of tsunami heights on a coastline and a distribution of ground heights. In addition, the extent of a flood area can be presumed if there are the above-mentioned distribution data and elapsed data of sea water levels at the time of a tsunami invasion.

著者

山本 吉道 河合 恭平 高野 哲男

出版者

公益社団法人 土木学会

雑誌

海洋開発論文集 (ISSN:09127348)

巻号頁・発行日

no.24, pp.1339-1344, 2008

被引用文献数

2

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In this research, the Ishikawa-ken area of Kaetsu coastal zone and Enshu-nada coastal zone are selected as the coastal zone where a large-scale sandy beach is left, and sedimentation control of those zones is examined in order to recover the continuity of overall movement of earth and sand, and the following plans are proposed:<BR>1) An efficient countermeasure based on sand recycling by shipping and natural carrying system due to waves and currents in the Ishikawa-ken area of Kaetsu coastal zone.<BR>2) An effective countermeasure based on natural carrying power due to Tenryu river flow and a sand bypass by trucking for short distance in Enshu-nada coastal zone.

著者

山本 吉道 中山 正広 岩井 健浩

出版者

公益社団法人 土木学会

雑誌

海洋開発論文集 (ISSN:09127348)

巻号頁・発行日

no.21, pp.39-44, 2005

被引用文献数

1

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The great earthquake of M9 was generated in the North Sumatra offing at 7: 58 on December 26th, 2004, and the serious tsunami calamity was produced in every coast of Indian Ocean. We report on the damage survey that we carried out from January 9th to 12th in Thai western coast where typical tsunami damage was produced.<BR>(1) The tsunami height of Khoa Lak coast was about 9m on the sea level, and almost all walls and pillars of buildings within 30m of coastal line were toppled. The flood region had reached to lkm or more inland.<BR>(2) The tsunami height of Patong beach was about 6m on the sea level, and almost all walls and pillars of buildings within 30m of coastal line were not toppled but the flood depth was about 2m.<BR>(3) The tsunami height of Phi Phi island is 6-7m on the sea level at the north side and 3.5-5m on the sea level at the south side.

著者

山本 吉道 河合 恭平 高野 哲男

出版者

Japan Society of Civil Engineers

雑誌

海洋開発論文集 (ISSN:09127348)

巻号頁・発行日

vol.24, pp.1339-1344, 2008 (Released:2010-08-25)

参考文献数

21

被引用文献数

2 2

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In this research, the Ishikawa-ken area of Kaetsu coastal zone and Enshu-nada coastal zone are selected as the coastal zone where a large-scale sandy beach is left, and sedimentation control of those zones is examined in order to recover the continuity of overall movement of earth and sand, and the following plans are proposed:1) An efficient countermeasure based on sand recycling by shipping and natural carrying system due to waves and currents in the Ishikawa-ken area of Kaetsu coastal zone.2) An effective countermeasure based on natural carrying power due to Tenryu river flow and a sand bypass by trucking for short distance in Enshu-nada coastal zone.