The OOI RCA and COSZO strong-motion accelerometers collect and stream three-component ground acceleration data in real-time. The data can be used to help characterize and accurately locate earthquakes below the continental shelf and facilitate offshore earthquake and tsunami early warning research.

The acceleration time series can be retrieved from EarthScope Data Services. Below are links to the station summaries, listed by site. 

For tools to access the data, select the "Data" tab at the top of the EarthScope Station Summary page.

PN1A (Slope Base)

OO HYSB1 - Guralp CMG-5T, DC_100 s, 1.02 V/m/s**2, 1g clip level; Sample rates: 1 Hz, 8 Hz, 40 Hz, 200 Hz

PN1B

COSZO instrument (coming in 2026) - Nanometrics Atlantis Cabled Observatory (Trillium 360 Ocean Bottom Broadband Seismometer, Class A Titan Accelerometer, Centaur Gen 5 Datalogger); Sample rates: 1 Hz, 8 Hz, 40 Hz, 200 Hz

Southern Hydrate Ridge

OO HYS14 - Guralp CMG-5T, DC_100 s, 1.02 V/m/s**2, 1g clip level; Sample rates: 1 Hz, 8 Hz, 40 Hz, 200 Hz

PN1C (Offshore)

COSZO instrument (coming in 2026) - Nanometrics Atlantis Cabled Observatory (Trillium 360 Ocean Bottom Broadband Seismometer, Class A Titan Accelerometer, Centaur Gen 5 Datalogger); Sample rates: 1 Hz, 8 Hz, 40 Hz, 200 Hz

PN1D

COSZO instrument (coming in 2026) - Nanometrics Atlantis Cabled Observatory (Trillium 360 Ocean Bottom Broadband Seismometer, Class A Titan Accelerometer, Centaur Gen 5 Datalogger); Sample rates: 1 Hz, 8 Hz, 40 Hz, 200 Hz

Oregon Shelf

COSZO instrument (coming in 2026) - Nanometrics Atlantis Cabled Observatory (Trillium 360 Ocean Bottom Broadband Seismometer, Class A Titan Accelerometer, Centaur Gen 5 Datalogger); Sample rates: 1 Hz, 8 Hz, 40 Hz, 200 Hz