HPIES About to Drop 2900 meters

HPIES About to Drop 2900 meters

An HPIES instrument deployed off the starboard side of the R/V Sikuliaq ~ 125 km offshore Newport Oregon near the base of the Subduction Zone. The instrument was released and free fell over 9000 ft to land softly on the seafloor - the extended legs insure a softer landing and that is stays nearly horizonatal as it travels throught the water column. This instrument utilizes a bottom pressure sensor, an inverted echosounder and a horizontal electrometer to provide insights into the vertical structure of current fields, near-bottom water currents, and water properties including temperature, salinity, and specific volume anomalies. It was built at the Applied Physics Laboratory. Credit: M. Elend, University of Washington, V16.

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