Differential Pressure Gauge
Differential Pressure Gauge (DPG) instruments are typically installed with current meters to comprise an Auxiliary Platform of an Ocean Bottom Seismometer (OBS). This auxiliary platform holds a back-up battery to power a nearby broadband seismometer in event of a power outage. Additionally, the current meter and a differential pressure gauge help seismologists detect and remove current, tides and wave signatures from seismic data.
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