The multibeam sonar is taken out of the water for re-calibration at a specific time each day.

The multibeam sonar is taken out of the water for re-calibration at a specific time each day. Image courtesy of San Andreas Fault 2010 Expedition, NOAA-OER.

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Related Links

San Andreas Fault 2010

San Andreas Fault 2010: Sept 17 Log

NOAA Ocean Explorer Gallery