DONET is a unique development program of submarine cabled real-time seafloor observatory network. This program has aimed to establish the technology of large scale real-time seafloor research and surveillance infrastructure for earthquake, geodetic and tsunami observation and analysis. The first phase of this program has been carried out since 2006 to settle on To-Nankai region in Nankai trough as the target of observation. The initial plan scheduled to install twenty sets of complex cabled monitoring observatories to cover the active seismogenic zone of To-Nankai earthquakes.
More details can be found on DONET dedicated website.