Shallow Profiler V14

Shallow Profiler Components
Shallow Winched Profiler Mobilized

During the port call for Leg 4 in Newport, Oregon, the UW-APL-built Shallow Winched Profiler was loaded onto the R/V Thompson. The system has an underwater level wind that "spools" out yellow cable, which will provide power and communications to an attached instrument "pod" (orange bulbous-shaped package bottom left). The profiler will be located at a water depth of ~197 m on the already installed mooring at the EA Offshore Site. Several times a day the instrument pod will rise from the 197-m-deep platform to just beneath the ocean's surface making critical chemical and biological measurements. Photo Credit: Skip Denny, APL-UW; V14.

Shallow Profiler Mooring Installed Oregon Offshore

The two-legged Shallow Profiler Mooring was installed on ROPOS Dive R1753 at the Oregon Offshore Site (600 m). The instrumented winched shallow profiler and platform instrument systems will be installed on Leg 4. Photo credit: NSF-OOI/UW/CSSF; Dive R1753; V14.  

The state-of-the-art Shallow Profiler mooring features a two-legged system that terminates at a 200-m Platform. The 13 ft across platform hosts an instrumented winched Shallow Profiler that travels from 200 m to just below the ocean's surface and a second instrument pod that is stationary on the platform.

The 200-m Platform instruments include the following: pH, Broadband Hydrophone, Fluorometer, CTD, Dissolved Oxygen, 5-beam ADCP, Digital Still Camera, and a 150-kHz ADCP

The Shallow Profiler instruments include the following: CTD, Dissolved Oxygen, Nitrate, pH, Optical Attenuation, Spectral Irradiance, Photosynthetically Active Radiation, Fluorometer - 3 wavelengths, and a Current Meter.

The Shallow Profilers are scheduled for installation during VISIONS '14 and are each paired with the Deep Profiler and a Seafloor Instrument Array at three study sites: at the base of the Cascadia Margin (Slope Base), in shallower waters along the Oregon margin west of Newport (Endurance Offshore Site), and at the base of Axial Seamount.