2026-02-05 北海道大学
＜関連情報＞
- https://www.hokudai.ac.jp/news/2026/02/30-41.html
- https://www.hokudai.ac.jp/news/pdf/260205_pr2.pdf
- https://www.tandfonline.com/doi/full/10.1080/01431161.2026.2612824
衛星リモートセンシングを活用した海底における貧酸素水塊の発生予測：日本の噴火湾における事例解析 Application of satellite remote sensing data for predicting the occurrence of hypoxia at the seabed: a case study in Funka Bay, Japan
Hiroto Abe,Akihiro Sasaki,Hiroji Onishi,Atsushi Ooki,Tetsuya Takatsu,Takahiro Iida,…
International Journal of Remote Sensing Published:09 Jan 2026
DOI:https://doi.org/10.1080/01431161.2026.2612824
ABSTRACT
Hypoxic water masses have extremely low levels of dissolved oxygen (<2 mL L−1) that can occur above the seabed in closed water owing to an imbalance between oxygen supply and demand. Their occurrence may inhibit the growth of benthic organisms and, in some cases, cause their death, potentially resulting in devastating economic losses for fisheries that depend on benthic fish and shrimp. A system for predicting the occurrence of hypoxia is necessary to help the fisheries prepare in advance and minimize the damage. We previously investigated the wintertime oxygen recovery process of Funka Bay in Japan, an area with thriving fisheries that catch flounder and cod, and performed onsite measurements for sea surface heat flux calculation to successfully predict the occurrence of hypoxic water masses at the seabed from 2012 to 2019. In this study, long-term oceanic and atmospheric data collected by satellites and meteorological observation stations were used to develop a model for predicting the summertime occurrence of hypoxic water masses in Funka Bay at the seabed up to 6 months in advance without the need for onsite observations. The model was then applied to past data, successfully predicting a severe event that took place in 1995 when dead flounder, flatfish and cod floated to the surface.
