Blue Pond (Biei)
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Blue Pond | |
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Location | Biei, Hokkaido, Japan |
Coordinates | 43°29′37″N 142°36′51″E / 43.493583°N 142.614028°E |
Type | man-made pond |
Blue Pond (青い池, Aoi-ike) is a man-made pond feature in Biei, Hokkaido, Japan. It is the result of works on the Biei River (美瑛川), carried out after the 1988 eruption of Mount Tokachi, to protect the town of Biei from volcanic mudflows. The colour is thought to result from the accidental presence of colloidal aluminium hydroxide in the water.[1][2] Damage caused by Typhoon Mindulle in August 2016 resulted in a temporary drop in the water level and in the colour briefly turning brown with mud and sand from the Biei River.[3]
See also
Wikimedia Commons has media related to Shirogane Blue Pond.
References
- ^ Takagai Yoshitaka; Abe Ryōta. 湖面の青色色彩に関する五色沼と北海道美瑛町青い池の化学的類似性と相違性について [Concerning the Chemical Similarities and Differences between the Blue-Coloured Waters of Goshikinuma and Blue Pond in Biei Town, Hokkaido] (PDF) (in Japanese). Fukushima University. Retrieved 1 October 2016.
- ^ 美瑛町の観光地「青い池」 [Blue Pond Visitor Attraction in Biei Town] (PDF) (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. Archived from the original (PDF) on 2 October 2016. Retrieved 1 October 2016.
- ^ 台風で濁った「青い池」復活 北海道、立ち入り制限解除 [Access to Blue Pond Restored after Typhoon Damage]. Asahi Shimbun (in Japanese). 14 September 2016. Retrieved 1 October 2016.
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- Biei, Hokkaido
- Lakes of Hokkaido
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