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Assessment of the spatial distribution of submarine groundwater discharge (SGD) along the Yatsushiro Inland Sea coastline, SW Japan, using 222Rn method

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Abstract

A towing method using 222Rn can detect SGD signals in coastal areas. This study aims to evaluate the impact of topography and hydrology on SGD spatial distribution and the estimation of SGD patches along the coastlines. For this, we tried to determine the SGD signals in the study area and the maximum depth where the SGD rate is significant. The study conducted along the Yatsushiro Sea coastline, SW Japan. The estimated SGD distribution pattern suggests that the local topographic and geological settings govern the occurrence of SGD (recirculated seawater (RSGD) and terrestrially derived groundwater (FSGD)) as the primary deriving forces.

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Acknowledgments

We appreciate members of the fishing community in Kumamoto and Kagoshima prefectures for their cooperation during field measurements. We acknowledge Dr. Makoto Kagabu for his assistance during research procedures. This study was financially supported by the Yatsushiro Sea project (JST).

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Authors and Affiliations

  1. Department of Earth Sciences, GSST, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan

    Yaser Nikpeyman, Heejun Yang & Jun Shimada

  2. Department of Geology, Yazd University, Safayieh, Yazd, 89195–741, Iran

    Yaser Nikpeyman

  3. Priority Organization for Innovation and Excellence, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan

    Takahiro Hosono

  4. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan

    Masahiko Ono

  5. Center for Marine Environment Studies, Kumamoto University, Kumamoto, Japan

    Kiyoshi Takikawa

Authors
  1. Yaser Nikpeyman
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  2. Takahiro Hosono
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  3. Masahiko Ono
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  4. Heejun Yang
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  5. Jun Shimada
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  6. Kiyoshi Takikawa
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Correspondence to Yaser Nikpeyman.

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Nikpeyman, Y., Hosono, T., Ono, M. et al. Assessment of the spatial distribution of submarine groundwater discharge (SGD) along the Yatsushiro Inland Sea coastline, SW Japan, using 222Rn method. J Radioanal Nucl Chem 307, 2123–2132 (2016). https://doi.org/10.1007/s10967-015-4573-8

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  • DOI: https://doi.org/10.1007/s10967-015-4573-8

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