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Title :有明海沿岸域の佐賀県太良町大浦沖における海底地下水湧出と栄養塩の輸送
Title alternative :ESTIMATION OF NUTRIENT INPUTS THROUGH SUBMARINE GROUNDWATER DISCHARGE TO THE ARIAKE BAY AREA : OFF THE OURA COAST , TARA-TOWN SAGA
Authors :安元, 純
広城, 吉成
高岡, 秀朋
古市, 久士
松原, 英隆
神野, 健二
Authors alternative :Yasumoto, Jun
Hiroshiro, Yoshinari
Takaoka, Hidetomo
Furuichi, Hisashi
Matsubara, Hidetaka
Jinno, Kenji
Issue Date :2007
Abstract :Submarine Groundwater Discharge (SGD) is now recognized as an important pathway between land and sea. This paper takes a first step for estimating nutrient inputs through SGD to Ariake Bay. SGD rates and its quality along the coast of the Ariake Bay off Oura region were investigated. As a result, it was shown that on-site SGD rate ranged from 0.01 to 20.52µm/s, and SGD flowed through shallow confined aquifers which consist of basalt and superposition pyroclastic fall with shorter residence time. Then, it was estimated that reduction reaction for SGD proceeded just up to denitrification, and SGD associated nutrient loads (N, P, SiO_2) are estimated at 1.40g/day, 0.07g/day, and 52.78g/day respectively. The results of this study demonstrate that SGD must be considered as a significant source of nutrient to the coastal sea area in Ariake Bay.
Type Local :雑誌掲載論文
ISSN :1884-9172
Publisher :公益社団法人 土木学会
URI :http://hdl.handle.net/20.500.12000/45705
Citation :水工学論文集 Vol.51 p.481 -486
Appears in Collections:Peer-reviewed Journal Articles (Faculty of Agriculture)

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