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         current toward southward exists in the sea area off Oppama.









                                                          Variation =
                                                          Case1 - Case.?
                                                                   *MOO
                                                            Case.?
                      Variation of  Dissolved Oxygen (%)  Variation of  Phytoplankton (2)
           Figure 8: Horizontal distributions of dissolved oxygen and phytoplankton variations at Im below
                                the sea surface in August 27-29, 1996
         The size of the VLFS, which is expected to be constructed in the future, is perhaps much larger than that
         of the Mega-Float model. Further, the extent of the impacts depends on depth of the sea area, speed of
         the  residual  current,  activities of marine  lives, and so forth.  Therefore,  as future assignments.  the
         impacts of the VLFS should be examined with sufficient caution on the size of the floating structurc and
         the characteristic of the sea area.

         References
           Fujino M.,  Kagemoto H.  and Hamada T. (1996). On the Sea-Covering Effect of a Huge Floating
           Structure  on  the  Surrounding  Water.  The  Society  of  Naval  Architects  of  Japan,  393-402  (in
           Japanese).
           Fujino M.,  Kyozuka Y., Tabeta S. and Ohkawa Y.  (1997). Measurement  of Marine Environment
           around Mega-Float Model in Tokyo Bay. The 16th International Conference on Offshore Mechanics
           and Arctic Engineering,  47-54.
           Fujino M., Tabeta T., Kato T., Kitazawa D.,  Akiyama K., Matsuoka K. and Yukiura S. (2001). Field
           Measurement of Marine Environment around a Very  Large Floating Structure in Tokyo Bay.  The
           20th International Conference  on Offshore Mechanics and Arctic Engineering (in press).
           Kitazawa D.  and Fujino M. (1999). A Study on the Effects of a Very Large Floating Structure on
           Marine Environment.  The Third International Workshop on  Very Large  Floating Structures. 297-
           306.
           Kitazawa D., Fujino M. and Tabeta S. (2000). A  Study on the  Effects of a  Very  Large Floating
           Structure on Coastal Ecosystem in Tokyo Bay. The Society of Naval Architects of Japan, 59-72. (in
           Japanese).
           Kitazawa D.,  Fujino M. and Tabeta S. (2001). Predictions of Coastal Ecosystem in Tokyo Bay by
           Pelagic-Benthic  Coupled  Model.  The  20th International Conference on Offihore Mechanics and
           Arctic Engineering (in press).
           Kyozuka Y., Hu C.. Hasemi H., Nakagawa H. and Hikai A. (1997). An Ecohydrodynamic Model for
           Environmental Assessment of a Mega-Float in a Bay. The I6th International Conference on Qfshore
           Mechanics and Arctic Engineering, 3 1-38.
           Tamai K. (1 998). Distribution and Production of Macrobenthos. Marine Coastal Environment (Edit.
           Hiamo T.), 244-253. (in Japanese)
           Technological Research Association of Mega-Float. (1 998). Measurement of the Ecosystem in the
           Real Sea around the Mega-Float Model.
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