publication . Research . 2013

Origins of Phosphorus and Nitrogen in the Seto Inland Sea, Japan

Yanagi, Tetsuo; Tanaka, Tsuyoshi; 柳, 哲雄; 田中, 剛;
Open Access English
  • Published: 01 Mar 2013 Journal: 九州大学応用力学研究所所報, volume 144, pages 13-18 (issn: 1345-5664, Copyright policy)
  • Publisher: Research Institute for Applied Mechanics, Kyushu University
Origins of total phosphorus (TP) and total nitrogen (TN) were investigated in the Seto Inland Sea, Japan, using the unit response function method. About 58 % of TP and TN in the Seto Inland Sea were found to have originated from the open ocean, 9 % of TP and 14 % of TN originate from rivers, 33 % of TP and 29 % of TN originate from bottom sediments. We consequently suggest that it would be very difficult to prevent the occurrence of red tides and oxygen deficient water masses in the Seto Inland Sea by managing land-derived TP and TN, because their proportions (9 % and 14 %, respectively) are very small. It may be possible to prevent the occurrence of red tides a...
free text keywords: nutrients, phosphorus, nitrogen, unit response function, average residence time
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Research . 2013
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