湖山池湖口における塩分フラックスの特性

DOI

書誌事項

タイトル別名
  • Characteristics of the salinity flux at the mouth of Lake Koyama-ike

抄録

Seawater backflow from the Sea of Japan is controlled by operating the flood gate on the Koyama River between the Sea of Japan and Lake Koyama-ike, a brackish lake in the Sanin region. An attempt was made to evaluate the salinity flux at the mouth of Lake Koyama-ike quantitatively, focusing on the effect of salinity on the ecosystem of the lake. The salinity and flow rates were monitored using electrical conductivity loggers and Doppler flow meter readings obtained every 10 min at various depths from August 8, 2021 to October 21, 2021. Based on the observed results, the salinity flux at the mouth of Lake Koyama-ike was estimated to be 0.09–5.82 kg/m2/s into the lake. When the salinity flux was high, the water level difference between the lake and the downstream site of the flood gate was large, the opening of the flood gate was large, and the salinity concentration was high at the downstream site of the flood gate. However, the results suggest that when the salinity flux is small, the flood gate opening is small, salinity concentration at the downstream site of the flood gate is low, and backflow time tends to be short.

収録刊行物

キーワード

詳細情報 詳細情報について

  • CRID
    1390018198841918336
  • DOI
    10.60290/laguna.30.0_11
  • ISSN
    21852995
    13403834
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
  • 抄録ライセンスフラグ
    使用可

問題の指摘

ページトップへ