Journal of Oceanography

, Volume 60, Issue 3, pp 563–568 | Cite as

Artificial Upwelling of Deep Seawater Using the Perpetual Salt Fountain for Cultivation of Ocean Desert

  • Shigenao MaruyamaEmail author
  • Koutaro Tsubaki
  • Keisuke Taira
  • Seigo Sakai


Deep seawater in the ocean contains a great deal of nutrients. Stommel et al. have proposed the notion of a “perpetual salt fountain” (Stommel et al., 1956). They noted the possibility of a permanent upwelling of deep seawater with no additional external energy source. If we can cause deep seawater to upwell extensively, we can achieve an ocean farm. We have succeeded in measuring the upwelling velocity by an experiment in the Mariana Trench area using a special measurement system. A 0.3 m diameter, 280 m long soft pipe made of PVC sheet was used in the experiment. The measured data, a verification experiment, and numerical simulation results, gave an estimate of upwelling velocity of 212 m/day.

Deep seawater upwelling perpetual salt fountain natural convection heat transfer enhancement of bio-production flow measurement 


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Copyright information

© The Oceanographic Society of Japan 2004

Authors and Affiliations

  • Shigenao Maruyama
    • 1
    Email author
  • Koutaro Tsubaki
    • 1
  • Keisuke Taira
    • 2
  • Seigo Sakai
    • 3
  1. 1.Institute of Fluid ScienceTohoku UniversitySendaiJapan
  2. 2.Japan Society for the Promotion of ScienceTokyoJapan
  3. 3.Graduate School of EngineeringYokohama National UniversityYokohamaJapan

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