Aerial photographs taken around Nishinoshima Island.
Geospatial Information Authority of Japan (GSI) took aerial photographs of the area around Nishinoshima Island on March 1st by its Unmanned Aerial Vehicle (UAV) launched from Chichijima Island, Ogasawara Village, Tokyo. GSI measured area, highest elevation and volume and these results are publicly available.
These photographs were taken on March 1st with the cooperation of the Ministry of Defense, and area around Nishinoshima Island had previously been taken on December 4th and 10th by means of GSI’s survey aerial vehicle “Kunikaze III”.
Through the analysis of aerial photographs taken of the area around Nishinoshima Island (Attachment 1), the following results were obtained (Attachment 2).
The present aerial photographs are being published on the Internet under “GSI Maps”. Furthermore, a map showing elevation change from December 4th (Attachment 3), simplified video successively displaying oblique photographs (Attachment 4), 3D images of the area around Nishinoshima Island (Attachment 5), topographic interpretation maps (Attachment 6-1 and Attachment 6-2), and elevation data are also published.