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324 results on '"Serizawa, Masumi"'

1. Effect of Gravel Nourishment and Maintenance of the Beach on Akiya Coast in Yokosuka City, Japan

Author

Uda, Takaaki, Yoshioka, Atsushi, Sasaki, Nobumitsu, Fujita, Masanori, Serizawa, Masumi, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Tajima, Yoshimitsu, editor, Aoki, Shin-ichi, editor, and Sato, Shinji, editor

Published
2024
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2. Model for Predicting Topographic Changes of Beaches Composed of Sand of Mixed Grain Sizes Under Compound Action of Waves and Wind

Author

Yokota, Takuya, Uda, Takaaki, Kobayashi, Akio, Noshi, Yasuhito, Serizawa, Masumi, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Tajima, Yoshimitsu, editor, Aoki, Shin-ichi, editor, and Sato, Shinji, editor

Published
2024
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49. Derivation of the BG Model

Author

Uda, Takaaki, Serizawa, Masumi, Miyahara, Shiho, Uda, Takaaki, Serizawa, Masumi, and Miyahara, Shiho

Abstract

The BG model (a model for predicting 3D beach changes based on the Bagnold’s concept) was introduced, and the fundamental aspects of the model were explained. The BG model is based on the concepts such as (1) the contour line becomes orthogonal to the wave direction at any point at the final stage, (2) similarly, the local beach slope coincides with the equilibrium slope at any point, and (3) a restoring force is generated in response to the deviation from the statically stable condition, and sand transport occurs owing to this restoring force. The same concept has been employed in the contour-line-change model and N-line model. In these studies, the movement of certain contour lines was traced, but in the BG model, 3D beach changes were directly calculated.

Published
2018
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50. Segmentation and Merging of Closed Water Bodies by Wind Waves

Author

Uda, Takaaki, Serizawa, Masumi, Miyahara, Shiho, Uda, Takaaki, Serizawa, Masumi, and Miyahara, Shiho

Abstract

The segmentation and merging of elongated shallow water body with a large aspect ratio by wind waves were predicted using the Type 6 BG model. The deformation of a circular lake by wind waves was also studied when a straight seawall cutting a part of the water body was constructed in a lake for land reclamation, together with the investigation on the effect of the construction of detached breakwaters to the surrounding lakeshore. Finally, the formation of oriented lakes, groups of lake basins with a common long-axis orientation found in vast areas of the Arctic Coastal Plain, was predicted using the Type 6 BG model.

Published
2018
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