@article{oai:ir.kagoshima-u.ac.jp:00007809,
 author = {肥後, 伸夫 and 吐師, 弘 and 田畑, 静夫 and 西田, 雄祐 and 中野, 平二 and 朽見, 健一郎 and 田井村, 健次},
 journal = {鹿児島大学水産学部紀要=Memoirs of Faculty of Fisheries Kagoshima University},
 month = {2016-10-28},
 note = {In March in 1981, diving observations were carried out on the eight Artificial reefs set at the
Northern sea-front off Kagoshima City; with the following results obtained.
(1) Both in the Concrete reef and in the Bus reef, it was noted that the longer is the lapse of
time since they were set in, the larger is the number of the gathering fishes.
Especially, in the case of the big sized fishes and in that of the crewfish, the gathering effect was
excellent.
(2) In the case of the Concrete reefs, the rates in which the reefs are made to be submerged in to the sea bottom were ascertained to be 3.5~5.7 cm/year; which was noted to be 1/2 of the rates
observable in case of the reefs set in the off sea.
(3) In the case of the Buses reef, it was noted that its structure kept the original construction
even thirteen years after its setting in, the appearance of which seeming quite solid and firm.
The erosion rate of the iron plate was noted to be 0.06 mm/year.
(4) In the case of the lavas which are quite abundant in these districts, the specific gravities were noted to be 2.2~2.7; their submerging rates in to the sea-bottom being 60~80 cm/year, and their gathering effects were noted to be quite negligible; accordingly, it was assumed that the
lava was not proper as the material of the reef., 昭和56年3月,鹿児島市の沖合の北部海域において,8個所の人工魚礁を潜水観察した結果,下記のような知見を得た。
1) コンクリートブロック魚礁及びバス魚礁は,設置後の経過年数の古い程,魚群の蝟集効果が優れており,特に大型魚とイセエビを多く蝟集させている。2) 1m角コンクリートブロック魚礁の埋没の速さは3.5~5.7 cm/年で,外洋の魚礁のそれに比べ約1/2の速さである。3)バス魚礁は13年経過しても原型は崩れず堅牢である。鉄板の腐蝕の速さは平均0.06mm/年となる。4) 当地で入手し易い熔岩は比重が2.2~2.7であり,また急潮流下における埋没の速さは60~80cm/年となる。},
 pages = {25--38},
 title = {潜水観察による人工魚礁の実態について IX : 鹿児島市北部沖合海域の場合},
 volume = {30},
 year = {}
}