Author(s): Masashi Miyagawa; Yoshihiro Suenaga; Minoru Yamanaka
Linked Author(s):
Keywords: Rtificial reef; Numerical calculation; Current control; Hydraulic experiment; Sediment
Abstract: In Japan, we have settled a number of various types of artificial reefs for the catching ground or for the nursery of juveniles of fish, in order to enhance the marine resources (living stock). These functions of the structure are usually designed focusing attention to the following two aspects. One is the function promoting the aggregation of the target species by giving varieties in shape of the structure. Another is the function developing favorable food environment necessary for the object fish or other lives by letting bait creatures attach or gather the structure directly or indirectly. On the other hand, in Seto Inland Sea, in regard to the environmental condition of the sea, red tide occurs regularly and the oxygen-depleted water is generated in some area of the Seto Inland Sea in summer. In this article, we will report the situation of the ongoing verification experiment in the natural condition, which examines the method to improve the environment at the sea bottom around the structure by making upwelling current using the structure's current controlling function.
Year: 2005