Artificial Upwelling of Deep Seawater Using the Perpetual Salt Fountain for Cultivation of Ocean Desert
- 388 Downloads
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.
Unable to display preview. Download preview PDF.
- Aihara, T., I. Tanasawa and I. Michiyoshi (1976): Progress of Heat Transfer 4. Yokendo, Tokyo (in Japanese).Google Scholar
- Aihara, T., S. Maruyama and J. S. Choi (1986): Proc. 8th International Heat Transfer Conf., 4, 1581–1586.Google Scholar
- Maruyama, S., M. Ishikawa and K. Taira (2001a): Japanese patent, 2001-336479.Google Scholar
- Maruyama, S., K. Nakano, N. Takahashi, S. Sakai and K. Taira (2001b): Study on upwelling of deep seawater by the perpetual salt fountain. Proc. 38th National Heat Transfer Symp. Japan, 3, 753–754 (in Japanese).Google Scholar
- Nozaki, Y. (1998): Global Warming and the Oceans: The Role of Carbon Cycling. Univ. of Tokyo Press, Tokyo (in Japanese).Google Scholar
- Otsuka, K., A. Bando and H. Inoue (2000): A study on floating-type deep-seawater upwelling system. OTEC, 8, 43–48 (in Japanese).Google Scholar
- Takahashi, M. and K. Iseki (2000): Deep seawater as resource of the 21st century. Kaiyo, 22, 5–10 (in Japanese).Google Scholar
- Takahashi, N., S. Maruyama, S. Sakai and K. Taira (2002): A numerical analysis of natural convection using temperature and concentration differences. Mem. Inst. Fluid Sci., Tohoku Univ., 13, 21–30 (in Japanese).Google Scholar