Search results
Create more farmland
- The controversial Isahaya Bay Reclamation Project has been blamed for recent reduced harvests of fish and nori in the sea. A dike across Isahaya Bay, which was built to create more farmland, has reduced the tidal current mixing of the sea. These weaker tidal currents have led to abrupt changes in the marine environment.
eros.usgs.gov/earthshots/isahaya-bay-japan
People also ask
Why did Isahaya Bay get a dike?
When was the Isahaya Bay Dike built?
What happened to Isahaya Bay?
Did Isahaya Bay reclamation change the tidal current in Ariake Sea?
Why is the Isahaya Bay tidal flat closed?
Does the Isahaya Bay dike affect ebb current intensity?
Oct 14, 2021 · In 1997, the gates cutting off water to Isahaya Bay were closed, and the Isahaya tidal flat was drained. The construction of this dike by the Japanese government sparked conflicts for twenty years based on very material concerns about fishing and seaweed collecting, as well... See more.
The 7-kilometer sea wall (dike) was completed in April 1997, cutting off Isahaya Bay from the waters of the Ariake Sea. It separated thousands of hectares of tidal flats from the Ariake Sea and turned what was once Japan’s largest area of tidal lands into 1,500 hectares of farmland.
In 1997, the gates cutting off water to Isahaya Bay were closed, and the Isahaya tidal flat was drained. The construction of this dike by the Japanese government sparked conflicts for twenty years based on very material concerns about fishing and seaweed collecting, as well as on the appreciation for pristine nature (marine life and migratory ...
Isahaya Bay (諫早湾, Isahaya-wan) is a bay within the Ariake Sea, located northwest of the Shimabara Peninsula in Nagasaki Prefecture, Japan. Its surface area is about 65 square kilometres (25 sq mi), with a maximum depth of 10 metres (33 ft).
Oct 1, 2018 · The Isahaya Bay reclamation is one of the potential causes for environmental changes. •. Dispute has arisen concerning opening the reclamation project dike's floodgates. •. Countermeasures for reviving Ariake Sea as a sustainable ecosystem are suggested. Abstract.
- Rui Jia, Huayang Lei, Takenori Hino, Arul Arulrajah
- 2018
The Ariake Sea has a high tidal range—about 7 meters in the spring. This range creates vast tidal flats. The tidal flats in Isahaya Bay created oxygen for the entire Ariake Sea, purifying the water. The dike has prevented this purification function from happening.
Jan 4, 2018 · In Isahaya Bay, the dike construction caused a decrease of DO concentration greater than 2.0 mg l −1 , due to the decrease in DO supply from the vertical diffusion process with reduction of tidal current and the intensification of the density stratification.
