Increasing the size of the crater.
The Coast Guard conducted a new survey of the island of Nishinoshima on July 31 2015. It was observed that the crater joined the small crater which opened on July 6 north of the existing one, forming one large crater. The new high point has accumulated around the crater of abundant sulfur deposits, which could indicate a decrease in cone temperature. Furthermore, no explosion was observed as in the past.
The lava flows eastwards, increasing the size of the lava field and producing clouds of steam in contact with the sea. On a width of 100, 200 meters along the coast still produces water sea discoloration , which surrounds the island of a yellow-green color ring.
On July 31, when hovering over the island, it was found a tall cloud, but without data on its overall shape or its exact size. Navigation restrictions continue 4 km around the island.
August 05, 2015. Nishinoshima, Japon :
Source : Avcan / Japan coast Guard