Expanding of residence time of coastal lagoon water by means of recent sea-level rise and the effect on ecological system
Project/Area Number |
21340147
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Geology
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Research Institution | Shimane University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
IRIZUKI Toshiaki 島根大学, 総合理工学部, 教授 (60262937)
INOUE Mutsuo 金沢大学, 環日本海域研究センター, 助教 (60283090)
SETO Koji 島根大学, 汽水域研究センター, 准教授 (60252897)
TSUJIMOTO Akira 島根大学, 教育学部, 助教 (60570554)
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Project Period (FY) |
2009 – 2011
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Project Status |
Completed (Fiscal Year 2011)
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Budget Amount *help |
¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Fiscal Year 2011: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2010: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2009: ¥11,310,000 (Direct Cost: ¥8,700,000、Indirect Cost: ¥2,610,000)
|
Keywords | 海面水位変動 / 環境放射能 / ラジウム同位体 / 滞留時間 / 汽水域 / 沿岸生態系 / 水循環 / 生態系 / 環境変動 / ラドン / ラジウム |
Research Abstract |
I performed to clarify the water dynamics of coastal lagoon water by measuring the Radium and Radon radioactivity, and confirmed the effectiveness to understand the residence time of water. I recognized, however, some difficulties to overcome a number of sample analyses, because of various environmental factors depending on each other. I could not found clear correlation between meiobenthic foraminiferal ecology and the water residence time. In contrast to a prerequisite hypothesis that the recent sea-level rise making the lagoon water stagnant, still needs to be re-examined, due to recent change of foraminiferal assemblage.
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Report
(4 results)
Research Products
(98 results)
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[Journal Article] Lateral variation of^<134> Cs and^<137> Cs concentrations in surface seawater in and around the Japanese Sea after the Fukushima Dai-ichi Nuclear Power Plant accident2011
Author(s)
Inoue, M. Kofuji, H., Nagao, S., Yamamoto, M., Hamajima, Y., Yoshida, K., Fujimoto, K., Takeda, T. Isoda, Y.
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Journal Title
Journal of Environmental Radioactivity
Volume: 109
Pages: 45-51
Related Report
Peer Reviewed
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[Journal Article] ^<134> Cs and^<137> Cs activities in coastal seawater along Northern Sanriku and Tsugaru Strait, northeastern Japan2011
Author(s)
Inoue, M., Kofuji, H., Hamajima, Y., Nagao, S., Yoshida, K. and Yamamoto, M.
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Journal Title
Journal of Environemental Radioactivity
Volume: 111
Pages: 116-119
DOI
Related Report
Peer Reviewed
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[Journal Article] The influences of various anthropogenic sources of deterioration on meiobenthos(Ostracoda) over the last 100 years in Suo-Nada in the Seto Inland Sea, southwest Japan2011
Author(s)
Irizuki, T., Takimoto, A., Sako, M., Nomura, R., Kakuno, K., Wanishi, A. and Kawano, S.
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Journal Title
Marine Pollution Bulletin
Volume: 62
Pages: 2030-2041
Related Report
Peer Reviewed
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[Journal Article] The influences of various anthropogenic sources of deterioration on meiobenthos (Ostracoda) over the last 100 years in Suo-Nada in the Seto Inland Sea, southwest Japan2011
Author(s)
Irizuki, T., Takimoto, A., Sako, M., Nomura, R., Kakuno, K, Wanishi, A., Kawano, S.
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Journal Title
Marine Pollution Bulletin
Volume: 62
Pages: 2030-2041
Related Report
Peer Reviewed
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[Journal Article] Lateral variation of ^<134>Cs and ^<137>Cs concentrations in surface seawater in and around the Japanese Sea after the Fukushima Dai-ichi Nuclear Power Plant accident2011
Author(s)
Inoue, M.Kofuji, H., Nagao, S., Yamamoto, M., Hamajima, Y., Yoshida, K., Fujimoto, K., Takeda, T.Isoda, Y.
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Journal Title
Journal of Environmental Radioactivity
Volume: 109
Pages: 45-51
Related Report
Peer Reviewed
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[Journal Article] Seasonal variation of 228Ra/226Ra ratio in surface water from the East China Sea and the Tsushima Strait2010
Author(s)
Inoue, M., Nakano, Y., Yoshida, K., Yoko Kiyomoto, Y., Kofuji, H., Hamajima, Y. and Yamamoto, M.
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Journal Title
Journal of Oceanography
Volume: Vol.66, No.3
Pages: 425-428
NAID
Related Report
Peer Reviewed
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[Journal Article] Preliminary report on the Seasonal variations of 228Ra/226Ra ratios in the enclosed area of brackish Lake Nakaumi, southwest Japan2010
Author(s)
Nomura, R., Nakamura, K., Tsujimoto, A., Seto, K., Inoue, M., Kofuji, H.
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Journal Title
Radionuclides and its Application to Earth and Environmental Sciences
Pages: 171-177
Related Report
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[Journal Article] Preliminary report on the Seasonal variations of 228Ra/226Ra ratios in the enclosed area of brackish Lake Nakaumi, southwest Japan.2010
Author(s)
Nomura, R., Nakamura, K., Tsujimoto, A., Seto, K., Inoue, M., Kofuji, H.
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Journal Title
Radionuclides and its Application to Earth and Environmental Sciences
Pages: 171-177
Related Report
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[Journal Article] Seasonal variation of 228Ra/226Ra ratio in surface water from the East China Sea and the Tsushima Strait. J. Oceanogr.2009
Author(s)
Inoue, M., Nakano, Y., Yoshida, K., Yoko Kiyomoto, Y., Kofuji, H., Hamajima, Y., Yamamoto, M.
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Journal Title
Related Report
Peer Reviewed
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[Presentation] Paleoenvironmental changes of the Common Era in core sediments of NakaumiLagoon, Southwest Japan : Correlation with solar activity2011
Author(s)
Seto, K., Dettman, D.L., Takata, H., Kishiba, S., Sato, T.
Organizer
AGU 2011 FallMeeting
Place of Presentation
San Francisco, USA
Year and Date
2011-12-08
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[Presentation] Opening of the closed water area and the change of 228Ra/226Ra ratios in brackish Lake Nakaumi, southwest Japan2010
Author(s)
Nomura, R., Nakamura, K., Seto, K., Inoue, M. and Kofuji, H.
Organizer
Environmental Radioactivity. New Frontiers and Developments-
Place of Presentation
Roma, Italy
Related Report
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[Presentation] Spatial distributions of 226Ra, 228Ra, 228Th, and 137Cs in the southwestern area of the Sea of Okhotsk2010
Author(s)
Inoue, M., Yoshida, K., Minakawa, M., Kofuji, H., Nagao, S., Hamajima, Y., Shiomoto, A. and Yamamoto, M.
Organizer
Environmental Radioactivity. New Frontiers and Developments-
Place of Presentation
Roma, Italy
Related Report
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[Presentation] Opening of the closed water area and the change of 228Ra/226Ra ratios in brackish Lake Nakaumi, southwest Japan2010
Author(s)
Nomura, R., Nakamura, K., Seto, K., Inoue, M., Kofuji, H.
Organizer
Environmental Radioactivity-New Frontiers and Developments-
Place of Presentation
Roma, Italy
Related Report
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[Presentation] Preliminary reports on the seasonal variations of 228Ra/226Ra ratios in the closed area of brackish Lake Nakaumi, southwest Japan2009
Author(s)
Nomura, R. Nakamura, K., Tsujimoto, A., Seto, K., Inoue, M., and Kofuji, H.
Organizer
International Workshop on Low-level Measurement of Radionuclides and Its Application to Earth and Environmental Sciences
Place of Presentation
(金沢市)金沢大学
Year and Date
2009-11-05
Related Report
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[Presentation] Preliminary reports on the seasonal variations of 228Ra/226Ra ratios in the closed area of brackish Lake Nakaumi, southwest Japan.2009
Author(s)
Nomura, R., Nakamura, K., Tsujimoto, A., Seto, K., Inoue, M., Kofuji, H.
Organizer
International Workshop on Low-level Measurement of Radionuclides and Its Application to Earth and Environmental Sciences
Place of Presentation
金沢市
Year and Date
2009-11-05
Related Report
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[Presentation] Distribution of modern benthic foraminifera in the Ohashi River, south west Japan and its application to the fossil fauna in the Lake Shinji-Nakaumi system during the last century.2009
Author(s)
Takata, H., Seto, K., Kurata, K., Nomura, R., Khim, B.-K.
Organizer
日本地質学会第116年学術大会
Place of Presentation
岡山理科大
Year and Date
2009-09-05
Related Report
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