Project Description

Tsunami Early Warning & Detection Systems

In partnership with our manufacturing partner MSM, we offer a complete and Tsunami Early Detection and Warning System using proven technology. The system utilises a specialist deep water buoy and mooring system with an integrated pressure sensor and data transmission system that detects pressure changes on the ocean floor, transmitting warnings to a dedicated control centre, allowing for automatic alerts.

The main component of the system is the EBM 24-TS buoy, which is designed for deployment in deep waters and provides a stable platform for the complex control and communication system. The float is manufactured from solid closed-cell polyethylene foam sheet (with no water absorption) and coated with a thick layer of coloured polyurethane elastomer. These buoys are highly impact resistant and virtually unsinkable, even after a vessel collision.

A pressure sensor is deployed on the seabed at depths of up to 7,000 metres, to detect pressure variations resulting from the energy expelled from an undersea earthquake event. The sensor communicates with the buoy via an acoustic data link using wide-band ultrasound, and data is fed into the buoy-based CPU, which acts as an interface to the shore-based control centre. The pressure sensor contains sufficient battery power for 12 months and is serviced by releasing the unit from the anchor via an acoustic release mechanism.

The buoy-based CPU receives data from the sensor, processes it and sends it to the Control Centre, the entire process taking less than 60 seconds. All critical parameters (pressure data, GPS positioning, power supply status) are displayed and transmitted in real time. The system is generally configured to communicate redundantly via satellite.

The Control Centre is designed to process and display the data in a single graphical format and can be used to produce graphs and reports automatically. Alerts can be automatically configured to be broadcasted in a variety of ways and can be integrated into mass-notification systems.

Design of the deep-water mooring system is critical and must consider many site related variables to ensure reliable, long-term performance. Professional buoy modelling software is used to design moorings that ensure the buoy remains reliable and that the asset lifespan is maximised.

Buoys are marked in accordance with IALA Standards and Recommendations for safety of navigating vessels. Marine lanterns, radar reflectors and day marks are fitted for a high level of conspicuity at day and night. Buoys can be configured with AIS AtoN as an option, to provide additional signalling to marine traffic.