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1997•Journal of the Society of Naval Architects of JapanOpen access

An Assessment of a Mega-Float on Water Quality and Ecosystem in Tokyo Bay

Yusaku Kyozuka, Changhong Hu, Hiroyuki Hasemi, Akio Hikai

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Abstract

A preliminary study on an ecohydrodynamic model for the environmental assessment of a Very Large Floating Structure (VLFS) or Mega-Float in a bay is presented. The model consists of two parts, a hydrodynamic model and a marine ecosystem. Tidal currents and steady currents by the density anomaly are calculated in a bay with/without Mega-Float in the hydrodynamic model. A simplified marine ecosystem composed of nutrient, marine plankton and organic matter floating freely in the ocean is newly developed and combined with the hydrodynamic model.Numerical calculations with/without a Mega-Float in Tokyo Bay are demonstrated and the results are discussed by comparison with the existing computations and measurements.

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What this paper is about

A preliminary study on an ecohydrodynamic model for the environmental assessment of a Very Large Floating Structure (VLFS) or Mega-Float in a bay is presented. The model consists of two parts, a hydrodynamic model and a marine ecosystem. Tidal currents and steady currents by the density anomaly are calculated in a bay with/without Mega-Float in the hydrodynamic model. A simplified marine ecosystem composed of nutrient, marine plankton and organic matter floating freely in the ocean is newly developed and combined with the hydrodynamic model.Numerical calculations with/without a Mega-Float in Tokyo Bay are demonstrated and the results are discussed by comparison with the existing computations and measurements.

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Available abstract

A preliminary study on an ecohydrodynamic model for the environmental assessment of a Very Large Floating Structure (VLFS) or Mega-Float in a bay is presented. The model consists of two parts, a hydrodynamic model and a marine ecosystem. Tidal currents and steady currents by the density anomaly are calculated in a bay with/without Mega-Float in the hydrodynamic model. A simplified marine ecosystem composed of nutrient, marine plankton and organic matter floating freely in the ocean is newly developed and combined with the hydrodynamic model.Numerical calculations with/without a Mega-Float in Tokyo Bay are demonstrated and the results are discussed by comparison with the existing computations and measurements.

Key concepts: Bay, Float (project management), Environmental science, Oceanography, Marine ecosystem, Ecosystem, Mega-, Marine engineering

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