Feasibility Study on Real-time Seafloor Glove Monitoring Cable-network
A0130Kenichi Asakawa Deep Sea Research Department, Japan Marine Science and Technology Center
A0131Katsuyoshi Kawaguchi Deep Sea Research Department, Japan Marine Science and Technology Center
The real-time, long-term earth observation is essential to know the
glove dynamics. However, the shortage of geo-scientific data beneath
the sea makes it difficult to comprehend the nature phenomenon. It is
very important to consecutively obtain scientific data from underwater
in vast research field such as seismology, geo dynamics, marine
environmentology, ecology and biology.
A seafloor observation system based on the telecommunication submarine
cable technology, is the most reliable way to secure the hi-capacity
data transmission and power feeding line between the land and seafloor.
The current submarine cable in-line seismic observation system
presented us the talent of forthcoming seafloor observation.
In this paper, the authors will propose a scientific cable network of
next generation having the following feature. They are, 1) mesh-like
cable configuration covering research area, 2) more than 3,000km total
cable length, 3) deployable up to 6,000m water depth, 4) 50km
observation cite interval, 5)exchangeability of measurement equipment,
The proposed cable network structure will be quite different from the
conventional telecommunication submarine cable system. Plural
measurement equipment will be placed in each observation cite, and
these sensors will be able to be replaced for maintenance and upgrade.
The power feeding system and the data transmission system will be more
sophisticated than those for the telecommunication cable system. This
paper will discuss some possible system structure such as system
architecture, reliability, construction / maintenance method,
communication protocol, data format and time synchronization.