ASSESSMENT OF TURBIDITY CHANGE IN RESERVOIRS UNDER FUTURE CLIMATE CHANGE IN JAPAN

• UMEDA Makoto

  東北大学大学院 工学研究科土木工学専攻

• YASUMATSU Rikushi

  株式会社リクルート

Bibliographic Information

Other Title

• 気候変動が貯水池の濁水現象に及ぼす影響の全国的評価

Abstract

 In recent years torrential downpour occurs frequently due to the effect of climate change. Because of this, excess of high turbidity in reservoirs and long term persistence of turbidity has recently been regarded as a serious problem. Behaviour of suspended sediment(SS) is highly influenced by characteristics of reservoirs and of its catchments, such as turn over rate and erosion severity. Hence, this study conducted future prediction of turbidity in 29 reservoirs in Japan by applying 1-dimension hydraulic model. Results showed that change in stratification period causes increase of SS concentration in outflow during snowmelt period. Furthermore, we revealed that change in inflow due to change in precipitation will result in substantial increase in SS in outflow in the future.

Journal

• Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

  Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 76 (5), I_151-I_157, 2020

  Japan Society of Civil Engineers

Keywords

• reservoir
• turbidity
• climate change
• numerical analysis

Details

• CRID: 1390568456353234816
• NII Article ID: 130007970584
• DOI: 10.2208/jscejer.76.5_i_151
• ISSN: 21856648
• Web Site: https://www.jstage.jst.go.jp/article/jscejer/76/5/76_I_151/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed