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April 1997
- The 7-kilometer sea wall (dike) was completed in April 1997, cutting off Isahaya Bay from the waters of the Ariake Sea.
eros.usgs.gov/earthshots/isahaya-bay-japan
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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.
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 ...
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.
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).
In 1997 the Isahaya Sea Dike was built in the head of Isahaya Bay which is a branch of the Ariake Sea, Japan, with the aim of reclaiming land for agriculture and flood control.
Jan 4, 2018 · In the Ariake Sea, dike construction in Isahaya Bay in 1997 for reclamation and disaster prevention was thought to cause big anthropogenic impacts on the marine ecosystem. Currently, hypoxia or anoxia occurs every summer in Isahaya Bay and the inner Ariake Sea.
For 25 years, Hirofumi Yamashita (d. 2000) fought a reclamation project in Isahaya Bay, one of the world’s richest wetlands, forcing the Japanese government to scale back the massive dike and reassess the reclamation’s environmental costs.
