UW-APL engineer Paul Aguilar up at sunrise to prep the Axial Base Horizontal Electrometer Pressure-Inverted Echosounder (HPIES), a novel OOI instrument measuring horizontal electrical field, pressure & acoustic travel time from seafloor to sea surface.
Credit: NSF-OOI/UW/CSSF/V22.
Posted in RCA VISIONS 22
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