Sensor frame (IMAGE) Royal Netherlands Institute for Sea Research Caption Sensor frame deployed among the polymetallic nodules in the Clarion-Clipperton Zone in the NE equatorial Pacific Ocean. The top sensor is a turbidity sensor recording suspended particulate matter loads and the bottom vertically mounted sensor is an ADCP (Acoustic Doppler Current Profiler) used for recording current speed and direction, as well as vertical profiles of turbidity. Credit Photo taken by ROV KIEL 6000 (GEOMAR, Kiel). Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.