Estimation of submarine groundwater discharge and its impact on the nutrient environment at Kamaiso beach, Yamagata, Japan

• KOBAYASHI SHIHO

  Field Science Education and Research Center, Kyoto University

• IKUTA KENGO

  Graduate School of Agriculture, Kyoto University

• SUGIMOTO RYO

  Research Center for Marine Bioresources, Fukui Prefectural University

• HONDA HISAMI

  Research Institute for Humanity and Nature

• YAMADA MAKOTO

  Faculty of Economics, Ryukoku University

• TOMINAGA OSAMU

  Research Center for Marine Bioresources, Fukui Prefectural University

• SHOJI JUN

  Graduate School of Biosphere Science, Hiroshima University

• TANIGUCHI MAKOTO

  Research Institute for Humanity and Nature

Bibliographic Information

Other Title

• 山形県釜磯海岸における海底湧水の定量化と栄養塩環境への影響評価
• ヤマガタケンガマ イソ カイガン ニ オケル カイテイ ワキミズ ノ テイリョウカ ト エイヨウエン カンキョウ エ ノ エイキョウ ヒョウカ
• Estimation of submarine groundwater discharge and its impact on nutrient environment in Kamaiso beach, Yamagata, Japan

Abstract

　Submarine groundwater discharge (SGD) was estimated on the Kamaiso Coast, a coastal zone at the base of Mt. Chokai, Yamagata, using a continuous heat-type automated seepage meter and Lee-type seepage meter. Significant SGD was observed and it changed with tidal cycle; the SGD flux reached a maximum value of 200 cm/day. The contribution of fresh groundwater reached 20%. The concentrations of nitrate and phosphate at the SGD point were several times larger than those at observation points some distance from the SGD point. The nitrogen stable isotope ratios of nitrate at the points that were significantly influenced by SGD were lower than those at the points without SGD. The results of this study indicate that SGD quantitatively impacts the nutrient environment in the coastal zone and that nitrate contained in submarine groundwater is taken up by seaweed, one of the major primary producers.

Journal

• NIPPON SUISAN GAKKAISHI

  NIPPON SUISAN GAKKAISHI 85 (1), 30-39, 2019-01-15

  The Japanese Society of Fisheries Science

Keywords

• 安定同位体比
• 栄養塩
• 海藻
• 海底地下水湧出
• 釜磯海岸

Details

• CRID: 1390282763096298368
• NII Article ID: 130007599915
• NII Book ID: AN00193422
• DOI: 10.2331/suisan.18-00020
• ISSN: 1349998X
• ISSN: 00215392
• NDL BIB ID: 029508674
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I029508674
• Web Site: https://www.jstage.jst.go.jp/article/suisan/85/1/85_18-00020/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed