In the world's most demanding environment you need OBS solutions that are proven to provide results
Nanometrics offers a range of ocean bottom seismometry solutions from individual instruments or accessories to fully integrated systems. We also provide custom solutions tailored to your imaging and deployment requirements. Our OBS solutions are designed for deployments in shallow, intermediate, and deep water up to 6,000 m, and for durations ranging from days to up to two years.
The ABALONES OBS
The long-standing collaboration between Nanometrics and Scripps Institution of Oceanography has led to a joint partnership that integrates Scripps’ proven and versatile OBS deployment technology with Nanometrics’ industry leading OBS Pegasus datalogger and Trillium seismometer technologies. Bringing together expertise in ocean science and seismic instrumentation provides research institutes around the world access to unparalleled seismic technologies for geophysical studies of the ocean.
The ABALONES frame system is manufactured by Nanometrics under license of Scripps Institution of Oceanography (SIO). The ABALONES provides an ideal platform for OBS experiments, with a very stable and trawl resistant design and robust, conformal syntactic foam flotation-based frame. The ABALONES system drops the seismometer directly onto the seafloor to achieve optimal seismic coupling to the earth and decoupling from the frame, but still surrounds the seismometer, shielding it from ocean currents to minimize unwanted noise. The versatile frame and four-channel Pegasus digital recorder are compatible with a range of sensor options including the Trillium Compact OBS 120s broadband seismometer, strong-motion, or short-period sensors, as well as supporting a pressure gauge or hydrophone. The modular design provides exceptional versatility in sensor and battery payload choices, and offers maximum potential for compatibility with future instruments.
The integrated Pegasus OBS digital recorder and Trillium Compact OBS seismometer combine low noise, high dynamic range and exceptionally low power consumption to greatly reduce battery cost and extend maximum deployment durations to more than 2 years.
Ocean Bottom Seismometers
Nanometrics has a long history of developing reliable, high-performing Ocean Bottom Seismometers (OBS) which have earned a reputation for rugged dependability. The 120s Trillium Compact OBS is an ultra-low power intermediate broadband seismometer for deployments up to 6,000 m depth.
The precise, kinematic 360° gimbal auto‑levels from any orientation ensuring successful deployment and implementation providing the full performance of a land‑based seismometer, including its exceptional dynamic range, low noise floor and low power consumption. A titanium pressure vessel and proven glass epoxy connectors ensure exceptional ruggedness and resistance to corrosion in marine and freshwater environments.
Learn more about the Trillium Compact OBS
Pegasus OBS - Purpose Built, OBS Workflow
Every aspect of the new Pegasus OBS ecosystem has been optimized to provide the greatest efficiency for ocean bottom experiments. The seamless, end-to-end workflow optimizes onshore and shipboard processes and delivers automatically constructed, ready-to-analyse data and metadata. The high-precision timing system of the Pegasus OBS can also produce automatically time-corrected data, interpolating the GNSS time offset recorded by the Pegasus.
With its remarkably small form factor and low power consumption, the Pegasus OBS digital recorder minimizes the cost of batteries, extends maximum experiment duration, reduces overall station size requirements, and simplifies integration into existing systems or new vessel designs.
Learn more about the Pegasus OBS Digital Recorder