Ocean Newsletter

【Ocean Newsletter】Back issues

No.99 September 20, 2004
  • Submerged atolls and their regeneration - Territorial preservation of island states in the Pacific Ocean and islands along the Japanese border -
    Hajime Kayane
    Associate Professor, Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo
  • Cultivation of ocean desert by the principal of perpetual salt fountain: Laputa project
    Shigenao Maruyama
    Professor, Institute of Fluid Science, Tohoku University
  • Progress and achievements of the world's largest hydraulic model of the Seto Inland Sea
    Hideki Ueshima
    Special Chief Researcher of Marine Environment Research, Research Coordinator Colaboration Depertment, National Institute of Advanced Industrial Science and Technology (AIST)

Submerged atolls and their regeneration - Territorial preservation of island states in the Pacific Ocean and islands along the Japanese border -

Hajime Kayane
Associate Professor, Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo

In order to maintain atolls that are in danger of submerging due to rising sea levels caused by global warming, it is essential to conduct ecological surveys of coral reefs. The establishment of reconstruction technology based on these surveys is also urgently necessary for Japan to preserve its territories.

Cultivation of ocean desert by the principal of perpetual salt fountain: Laputa project

Shigenao Maruyama
Professor, Institute of Fluid Science, Tohoku University

In 1950s, Stommel proposed an idea of "perpetual salt fountain".By making use of this idea, we have succeeded in an experiment of upwelling the nutrient-rich deep sea water. We have proposed a large, artificial upwelling facility in the sea areas such as Okinotorishima Island, and "the Laputa project", which cultivates the sea areas called "ocean desert" with low productivity, into the rich ocean forest.

Progress and achievements of the world's largest hydraulic model of the Seto Inland Sea

Hideki Ueshima
Special Chief Researcher of Marine Environment Research, Research Coordinator Colaboration Depertment, National Institute of Advanced Industrial Science and Technology (AIST)

I will introduce the progress and achievements of the world's largest analogue simulator, the "large hydraulic model of the Seto Inland Sea," which has been contributing to the environmental conservation of the Seto Inland Sea over the past 30 years and that I earnestly hope will be greatly used to develop environmental restoration technologies for nature regeneration in the Seto Inland Sea in the future.

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