SENDAI, Oct 31 (News On Japan) –
The Hirose River in Sendai City has turned a mysterious purple, sparking native concern. Residents are puzzled, with some noting they’ve by no means seen something prefer it earlier than.
Recent aerial surveys and investigations by Miyagi Prefecture have but to establish the supply of the discoloration, although the same incident in 2010 was attributable to rust flushed from stormwater pipes after heavy rain. In one other current case in Yokohama, purple discoloration was linked to “red tide” attributable to plankton. The precise trigger in Sendai, nonetheless, stays unknown.
Source: ANN