Aerial photographs had been taken around Nishinoshima Island
Geospatial Information Authority of Japan (GSI) took aerial photographs of the area around Nishinoshima Island by its survey aerial vehicle Kunikaze III launched from Io To Island, Ogasawara Village, Tokyo. And GSI measured area, highest elevation and volume and these results were published.
These photographs of the Ogasawara islands were taken at the beginning of December with the cooperation of the Ministry of Defense, and the area around Nishinoshima Island was photographed on December 4th and 10th (see Attachment 1 and Attachment 2). GSI's photography of the area around Nishinoshima Island had previously been taken on July 4th by means of an UAV (Unmanned Aerial Vehicle).
Results of analisis
Through the analysis of aerial photographs taken of the area around Nishinoshima Island, the following results were obtained.
Release of photos and analysis results
The present aerial photographs are being published on the Internet under "GSI Maps". Furthermore, 3D images of the area around Nishinoshima Island (Attachment 4), topographic interpretation maps (Attachment 5-1 and Attachment 5-2), and elevation data are also published.
Related website for information relating to eruption activity in area around Nishinoshima Island
http://www.gsi.go.jp/gyoumu/gyoumu41000.html (Japanese only)