Articles | Volume 21, issue 1
https://doi.org/10.5194/bg-21-177-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-21-177-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Jan 2024
Research article |
| 15 Jan 2024
| 15 Jan 2024
Short-term variation in pH in seawaters around coastal areas of Japan: characteristics and forcings
Fisheries Resources Institute, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-8648, Japan
Daisuke Muraoka
Miyako Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 4-9-1 Sakiyama, Miyako, Iwate 027-0097, Japan
Masahiro Hayashi
Demonstration Laboratory, Marine Ecology Research Institute, 4-7-17 Arahama, Kashiwazaki, Niigata 945-0017, Japan
Makiko Yorifuji
Demonstration Laboratory, Marine Ecology Research Institute, 4-7-17 Arahama, Kashiwazaki, Niigata 945-0017, Japan
now at: Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, AIST Tsukuba Central 7, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8567, Japan
Akihiro Dazai
Center for Sustainable Society, 69-15 Shizugawa-Mawaritate, Minami-Sanriku, Miyagi 986-0775, Japan
Shigeyuki Omoto
Eight-Japan Engineering Consultants Inc., 3-1-21 Tsushima-kyomachi, Kita-ku, Okayama, Okamaya 700-8617, Japan
Takehiro Tanaka
NPO Satoumi Research Institute, 3-2-2-4 Kanaoka-higashimachi, Higashi-ku, Okayama, Okayama 704-8194, Japan
Tomohiro Okamura
Hatsukaichi Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 2-17-5 Maruishi, Hatsukaichi, Hiroshima 739-0452, Japan
Goh Onitsuka
Hatsukaichi Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 2-17-5 Maruishi, Hatsukaichi, Hiroshima 739-0452, Japan
Kenji Sudo
Hatsukaichi Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 2-17-5 Maruishi, Hatsukaichi, Hiroshima 739-0452, Japan
Masahiko Fujii
International Coastal Research Center, Atmosphere and Ocean Research Institute, The University of Tokyo, 1-19-8 Akahama, Otsuchi, Iwate 028-1102, Japan
Ryuji Hamanoue
Graduate School of Environmental Science, Hokkaido University, North 10 West 5, Kita-ku, Sapporo, Hokkaido 060-0810, Japan
Masahide Wakita
Mutsu Institute for Oceanography, Japan Agency for Marine-Earth Science and Technology, 690 Kitasekine, Sekine, Mutsu, Aomori 035-0022, Japan
Data sets
Continuous monitoring data for the water quality of Tokyo Bay Tokyo Bay Environmental Information Center https://www.tbeic.go.jp/MonitoringPost/ViewGraph/ViewGraph?buoyId=02
Short summary
We carried out parallel year-round observations of pH and related parameters in five stations around the Japan coast. It was found that short-term acidified situations with Omega_ar less than 1.5 occurred at four of five stations. Most of such short-term acidified events were related to the short-term low salinity event, and the extent of short-term pH drawdown at high freshwater input was positively correlated with the nutrient concentration of the main rivers that flow into the coastal area.
We carried out parallel year-round observations of pH and related parameters in five stations...
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