Nutrient inputs through submarine groundwater discharge to Ariake Bay, Kyushu Island, Japan

Jun Yasumoto, Mamoru Katsuki, Hidetomo Takaoka, Yoshinari Hiroshiro, Kenji Jinno

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

2 被引用数 (Scopus)

抄録

Submarine groundwater discharge (SGD) is now recognized as an important pathway between land and sea. This study attempts to estimate the nutrient inputs through SGD to Ariake Bay. SGD rates and its quality along the coast of Ariake Bay in the Oura Region, Japan, were investigated. It was shown that the on-site SGD rate ranges from 0.01 to 20.52 μm/s, and SGD flows through the shallow confined aquifers, which consist of two kinds of rocks: basalt and pyroclastic rocks. The reduction reaction for SGD proceeded just up to denitrification. SGD associated with nutrient loads of N, P and SiO2 were estimated to be 1.40, 0.07 and 52.78 g m-2 d-1, respectively. This study demonstrates that SGD must be considered as a significant source of nutrient input to the coastal sea area in Ariake Bay.

本文言語英語
ホスト出版物のタイトルIAHS-AISH Publication - A New Focus on Groundwater - Seawater Interactions
ページ159-168
ページ数10
312
出版ステータス出版済み - 2007
イベントInternational Symposium: A New Focus on Groundwater - Seawater Interactions - 24th General Assembly of the International Union of Geodesy and Geophysics (IUGG) - Perugia, イタリア
継続期間: 7 2 20077 13 2007

その他

その他International Symposium: A New Focus on Groundwater - Seawater Interactions - 24th General Assembly of the International Union of Geodesy and Geophysics (IUGG)
国/地域イタリア
CityPerugia
Period7/2/077/13/07

All Science Journal Classification (ASJC) codes

  • 地球惑星科学(全般)

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