|Title||An ocean bottom seismic observatory with near real-time telemetry|
|Publication Type||Journal Article|
|Year of Publication||2016|
|Authors||Berger J., Laske G., Babcock J., Orcutt J.|
|Journal||Earth and Space Science|
|Keywords||4594 Instruments and techniques; ocean bottom observatory|
We describe a new technology that can provide near real-time telemetry of sensor data from the ocean bottom without a moored buoy or a cable to shore. The breakthrough technology that makes this system possible is an autonomous surface vehicle called a Wave Glider developed by Liquid Robotics, Inc. of Sunnyvale, CA., which harvests wave and solar energy for motive and electrical power. We present results from several deployments of a prototype system that demonstrate the feasibility of this concept. We also demonstrated that a wave glider could tow a suitably designed ocean bottom package with acceptable loss of speed. With further development such a system could be deployed autonomously and provide real-time telemetry of data from seafloor sensors. This article is protected by copyright. All rights reserved.
The tests of a prototype of a High Seas Telemetered Seismic Observatory have demonstrated that the concept is viable for long-term deployment as a high-seas GSN station. The next generation will include the ability to request particular data segments including dropped packets and higher bandwidth data. The longevity of the OBP will be limited by its energy supply but at least 2 years is feasible. The OSG will likely need to be relieved with a second unit every year or so due to biofouling. A wave glider with an auxiliary thruster will be needed to improve the watch keeping capability.