Nishinoshima Island discolored seawater colorimetric data (IMAGE)
Caption
This image illustrates the colorimetric data of discolored seawater in four directions (north, east, south, and west) around Nishinoshima Island in 2020. The study investigated the color characteristics of the water to validate if the data obtained by SGLI accurately captures the actual conditions of the discolored seawater. It detected significant fluctuations in the distribution of chemicals in Nishinoshima Island, estimated from SGLI data, about one month even before the volcano became active.
Credit
Photo courtesy of Yuji Sakuno
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