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High nutrients in the coastal area after heavy rain observed in the central Seto Inland Sea in July 2012

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Abstract

Temporary enhancement of the nutrient concentrations in the coastal area was observed after heavy rain in the central Seto Inland Sea in July 2012. After passage of a stationary front accompanied by heavy rain, the river outflow was enhanced, and low salinity and high nutrient concentrations were detected near the mouths of rivers. The offshore salinity and nutrients increased and decreased, respectively, which suggested that a snapshot event, such as heavy rain, could influence the short-term variation of the coastal marine environmental conditions, such as the salinity and nutrient distributions.

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References

  • Abe K (2007) Concentration level of dissolved cadmium and its variation in surface seawater of Urasoko Bay, Ishigaki Island. J Oceanogr 63:341–347

    Article  Google Scholar 

  • Abe K (2008) Factors controlling dissolved silica in coral reef surface water of Urasoko Bay, Ishigaki Island, Japan. J Oceanogr 64:961–967

    Article  Google Scholar 

  • Fujiwara T, Uno N, Tada K, Nakatsuji K, Kasai A, Sakamoto W (1997) Inflow of nitrogen and phosphorus from the ocean into Seto Sea. Proc Coast Eng JSCE 44–2:1061–1065 (in Japanese)

    Google Scholar 

  • Guo X, Futamura A, Takeoka H (2004) Residual currents in a semi-enclosed bay of the Seto Inland Sea, Japan. J Geophys Res 109:1–23

    Google Scholar 

  • Hashimoto T, Takeoka H (1998) Analysis of primary production in Seto Inland Sea, Japan, using a simple ecosystem model. J Oceanogr 54:123–132

    Article  Google Scholar 

  • Hashimoto T, Yamamoto T, Tada K, Matsuda O, Nagasue T, Tada T, Go A, Nakaguchi K (1996) Seasonal investigation of water quality characteristics of the Seto Inland Sea. J Fac Appl Boil Sci, Hiroshima Univ 35:243–274 (in Japanese with an English abstract)

    Google Scholar 

  • Kobayashi S, Fujiwara T, Tada M, Tsukamoto H, Toyoda T (2006) The distributions of nitrogen (N), phosphorus (P), silicon (Si) and nutrient ratios during the stratified season in the Seto Inland Sea. Oceanogr Japan 15:283–297 (in Japanese with an English abstract)

    Google Scholar 

  • Matsuoka S, Yoshimatsu S, Ono A, Ichimi K, Fujiwara M, Honda K, Tada K (2005) Discoloration of Nori (Porphyra) and characteristics of water quality in eastern Bisan Seto. Bull Coast Oceanogr 43:77–84

    Google Scholar 

  • Takeoka H (2002) Progress in Seto Inland Sea research. J Oceanogr 58:93–107

    Article  Google Scholar 

  • Takeoka H, Kikuchi T, Hayami Y, Sakakihara T (2002) Nutrients originated from the open ocean in the Seto Inland Sea. Kekkan-Kaiyo 34:406–411 (in Japanese)

    Google Scholar 

  • Yamamoto T (2003) The Seto Inland Sea–eutrophic or oligotrophic? Mar Poll Bull 47:37–42

    Article  Google Scholar 

  • Yamamoto T, Kitamura T, Matsuda O (1996) Riverine inputs of fresh water, total nitrogen and total phosphorus into the Seto Inland Sea. J Fac Appl Boil Sci, Hiroshima Univ 35:81–104 (in Japanese with an English abstract)

    Google Scholar 

  • Yanagi T, Ishii D (2004) Open ocean originated phosphorus and nitrogen in the Seto Inland Sea, Japan. J Oceanogr 60:1001–1005

    Article  Google Scholar 

Download references

Acknowledgments

The authors are deeply appreciative of the assistance with sampling that was provided by the officers and crew of the R/V Shirafuji-Maru. The authors also express special thanks to two anonymous referees and the editor of Journal of Oceanography for kindly provided constructive comments.

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Correspondence to Kazuo Abe.

Appendix

Appendix

See Table 1.

Table 1 Seawater analysis data

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Abe, K., Nakagawa, N., Abo, K. et al. High nutrients in the coastal area after heavy rain observed in the central Seto Inland Sea in July 2012. J Oceanogr 69, 269–275 (2013). https://doi.org/10.1007/s10872-013-0171-y

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  • DOI: https://doi.org/10.1007/s10872-013-0171-y

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