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Browsing by Author "Yagisawa, J"

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Analysis of drag force characteristics of real trees with three different types of vegetation for bioshield in coast

Karunaratne, WMSS; Tanaka, N; Weerakoon, SB; Yagisawa, J; Jinadasa, KBSN [Conference-Full-text]

This paper presents the experimental investigations on drag force characteristics of vegetation in mitigating the impact of tsunami and other surge effects by the resistance offered to the flow. The experiment was conducted ...
Effect of drifted houses on inundation region and the washout region of houses at the tsunami caused by the great east Japan earthquake

Kondo, K; Tanaka, N; Yagisawa, J [Conference-Full-text]

Breaking or washout condition of houses by a tsunami was usually analyzed using fluid force and moment by drag force. However, the condition was not validated in actual large tsunami that could cause catastrophic damage ...
Effect of physical tree characterisitcs and substrate Condition on maximum overturning moment

Yagisawa, J; Tanaka, N; Samarakoon, MB [Conference-Full-text]

Effects of physical tree characteristics and soil shear strength on overturning moment due to flooding were investigated using Salix babylonica and Juglans ailanthifolia, exotic and invasive plants in Japanese rivers. ...
Effect of river bed slope and particle size distribution on washing out condition of trees in rivers

Yagisawa, J; Tanaka, N [Conference-Full-text]

In previous studies, washing out of trees can be evaluated using Breaking or Overturning Index(BOI) and Washing-Out Index(WOI). However, the applicability of those indices were only validated some middle-stream rivers ...
Effect of stream-wise groins on the reduction of ship-waves energy flux and sediment transportation

Yagisawa, J; Tanaka, N [Conference-Full-text]

For preventing bank erosion due to ship waves, many stream-wise groins have been installed in the downstream region of Arakawa River, Japan. However, the bank erosion still occurs at some locations even though similar-type ...
Effects of the coastal forests, sea embankment and sand dune on reducing washout region of houses at the tsunami caused by the Great East Japan Earthquake

Yasuda, S; Tanaka, N; Yagisawa, J [Conference-Full-text]

The tsunami caused by the Great East Japan Earthquake on 11 March 2011, broke most of the sea embankment and coastal forests, and caused dreadful damage to people and buildings in Tohoku and Kanto districts of Japan. ...
Estimation of drag coefficient of trees considering the tree bending or overturning situations

Morinaga, T; Tanaka, N; Yagisawa, J; Karunaratne, S; Weerakoon, WMSB [Conference-Full-text]

Drag coefficients of a real tree trunk and the sheltering effects of an upstream trunk on a downstream one in a linear arrangement with different spacings and inclinations were investigated in detail. In addition, for ...
Overflow pattern and the formation of scoured region by the Tsunami propagated in river channels in Great East Japan earthquake

Tanaka, N; Yagisawa, J; Yasuda, S [Conference-Full-text]

The tsunami caused by the Great East Japan Earthquake on 11 March 2011, with a magnitude of 9.0, caused catastrophic damage to people and buildings in the Tohoku and Kanto regions of Japan. A field survey was conducted ...
Quantitative analysis on the tsunami inundation area and erosion along the Abukumagawa river at the great east Japan earthquake

Sato, M; Tanaka, N; Yagisawa, J [Conference-Full-text]

The tsunami caused by the Great East Japan Earthquake on 11 March 2011, broke most of the sea embankment and coastal vegetation belt and caused catastrophic damage to people and buildings in the Tohoku and Kanto regions ...

Browsing by Author "Yagisawa, J"

Browsing by Author "Yagisawa, J"

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