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24th International Conference on Coastal Engineering | 1995

NON-REFLECTIVE MULTI-DIRECTIONAL WAVE GENERATION BY SOURCE METHOD

Masahiro Tanaka; Takumi Ohyama; Tetsushi Kiyokawa; Kazuo Nadaoka

A special reflecting wall 12 m long and 2.1 m high was built off the beach at Reggio Calabria, and 30 wave gauges were assembled before the wall and were connected to an electronic station on land. It was possible to observe the reflection of wind waves generated by a very stable wind over a fetch of 10 Km. The experiment aimed to verify the general closed solution for the wave group mechanics (Boccotti, 1988, 1989), for the special case of the wave reflection.Significant features on Wadden Sea wave climate are evaluated in respect of the state of the art. Main emphasis was laid on an analysis of the governing boundary conditions of local wave climate in island sheltered Wadden Sea areas with extensions being sufficient for local wind wave growth. Explanatory for significant wave heights a reliable parametrization of local wave climate has been evaluated by using generally available data of water level and wind measurements.


Coastal Engineering Journal | 1989

Transmission and Reflection Characteristics of Waves Over a Submerged Flexible Mound

Takumi Ohyama; Masahiro Tanaka; Tetsushi Kiyokawa; Takaaki Uda; Yoshimi Murai


Archive | 1987

Submerged flexible wave restraining structure and a method of constructing it

Masahiro Tanaka; Takumi Ohyama; Akihiko Hirayama; Tetsushi Kiyokawa; Seiji Ichii; Yutaka Katsura; Tadashi Ono; Katsunori Shimizu


23rd International Conference on Coastal Engineering | 1993

CHARACTERISTICS OF WAVE DISSIPATION BY FLEXIBLE SUBMERGED BREAKWATER AND UTILITY OF THE DEVICE

Masahiro Tanaka; Takumi Ohyama; Tetsushi Kiyokawa; Takaaki Uda; Atsushi Omata


Offshore Technology Conference | 1990

Wave Control by Flexible Underwater Mound

Masahiro Tanaka; Takumi Ohyama; Tetsushi Kiyokawa; T. Uda; A. Ornata


PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN | 2002

ANALYSIS OF HYDRODYNAMIC PRESSURE ACTING ON OFFSHORE STRUCTURES IN AN ICE SEA REGION DURING EARTHQUAKES

Tetsushi Kiyokawa; Hiroshi Kobayashi; Akira Kurokawa


27th International Conference on Coastal Engineering (ICCE) | 2001

Wave Breaking Simulation for Multi-Directional Nonlinear-Dispersive Waves

Kazuo Nadaoka; Hitoshi Tamura; Tetsushi Kiyokawa


The Fifth International Offshore and Polar Engineering Conference | 1995

NUMERICAL PREDICTION FOR RESPONSE MOTION OF FLOATING STRUCTURES SUBJECTED TO SEAQUAKES

Tetsushi Kiyokawa


Archive | 1992

ESTRUCTURA SUMERGIDA Y FLEXIBLE DE CONTENCION DE OLAS Y METODO DE CONSTRUIRLA.

Masahiro Tanaka; Takumi Ohyama; Akihiko Hirayama; Tetsushi Kiyokawa; Seiji Ichii; Yutaka Katsura; Tadashi Ono; Katsunori Shimizu


Doboku Gakkai Ronbunshu | 1986

WAVE REFLECTION AND TRANSMISSION BY AN OPEN-BOTTOM AIRTIGHT CHAMBER FOR AN ACTIVE WAVE CONTROL SYSTEM

Tetsushi Kiyokawa; Takumi Ohyama

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Kazuo Nadaoka

Tokyo Institute of Technology

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Takaaki Uda

Ministry of Construction

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Atsushi Omata

Ministry of Construction

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Hitoshi Tamura

Japan Agency for Marine-Earth Science and Technology

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