@article{oai:nagasaki-u.repo.nii.ac.jp:00010288,
 author = {武田, 重信 and 田中, 大揮 and 高尾, 芳三 and 兼原, 壽生},
 journal = {長崎大学水産学部研究報告, Bulletin of the Faculty of Fisheries Nagasaki University},
 month = {Mar},
 note = {Distribution of hydrothermal activities and chemical composition of surrounding sediments were
investigated for shallow submarine hydrothermal systems in Tachibana Bay, Nagasaki, Japan as a first
step to elucidate its possible influences to the coastal ecosystem. Based on the observations of fumarolic
gas emissions using quantitative echosounder, existence of hydrothermal activities was confirmed at 33-
34 m depth near the coast of Obama hot springs. These were many small (2-6 mm in diameter) holes on
the surface of the bottom sediment, and the area of the fumarolic gas emissions had a horizontal scale
of 6-63 m. Hot (78℃) and dark subsurface-sediment at the hydrothermal activity region showed unusual
elemental composition characterized by higher contents of Al, S and As, and lower amounts of Ca, Cl and
Br compared with that of the typical coastal sediment., 長崎大学水産学部研究報告, 93, pp.33-39; 2012},
 pages = {33--39},
 title = {長崎県橘湾における浅海底熱水系},
 volume = {93},
 year = {2012}
}