Title :
A new approach for mobile and expandable real-time deep seafloor observation - adaptable observation system
Author :
Kawaguchi, Katsuyoshi ; Hirata, Kenji ; Nishida, Takato ; Obana, Shinichi ; Mikada, Hitoshi
Author_Institution :
Deep Sea Res. Dept., Japan Marine Sci. & Technol. Center, Kanagawa, Japan
fDate :
4/1/2002 12:00:00 AM
Abstract :
Although submarine cable in-line seafloor observation systems are very effective tools for real-time/long-term geo-scientific measurements,, there are technological difficulties for deploying as many sensors as on land. To solve this problem, JAM-STEC developed an expandable and replaceable satellite measurement station called the adaptable observation system (AOS). The AOS is a battery operated mobile observatory connected to the backbone cable system by a 10 km long thin fiber cable to ensure real-time data recovery. The system consists of a branching system, a junction box, a fiber cable, and a battery system for a six-month operation. Installation and construction of the AOS will be conducted by a towed vehicle and an ROV. A thin fiber cable-laying system was developed and tested for practical operation. This observation system provides a chance to extend existing seafloor networks from an in-line area to a wider area
Keywords :
cable laying; condition monitoring; marine telemetry; oceanographic equipment; optical cables; optical fibre telemetry; real-time systems; seismometers; submarine cables; 10 km; 6 month; JAMSTEC; Japanese Islands; adaptable observation system; backbone cable system; battery operated mobile observatory; battery system; branching system; earthquake monitoring system; expandable deep seafloor observation; fiber cable-laying system; installation; junction box; mobile deep seafloor observation; real-time data recovery; real-time deep seafloor observation; replaceable satellite measurement station; seismic observation; six-month operation; submarine cable in-line seafloor observation systems; thin fiber cable; Battery charge measurement; Communication cables; Marine technology; Optical fiber cables; Optical fiber testing; Real time systems; Satellites; Sea floor; Sensor systems; Underwater cables;
Journal_Title :
Oceanic Engineering, IEEE Journal of
DOI :
10.1109/JOE.2002.1002472