Data for temperature, pressure, and turbidity collected by Miniature Autonomous Plume Recorders (MAPR's) near the\u00a0Axial Seamount on the Juan de Fuca Ridge. The MAPR's were\u00a0equipped with a Seapoint light-backscattering sensor, a temperature sensor, and a pressure sensor. The light-backscattering sensor measures \u201cNephelometric Turbidity Units\u201d, which are a dimensionless, relative measure of particle mass concentration. The data for each MAPR includes information for elevation above the seafloor and the depth below the surface.
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Four MAPR's were deployed at different elevations above the seafloor: M34 at 55m, M12 at 80m, M13 at 105m, and M35 at 130m.\u00a0\u00a0
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The mooring was deployed at 46.0934\u00b0N, 129.9814\u00b0W, at a bottom depth of 1780 m , on 27 August 2015, and recovered on 21 July 2017.\u00a0A MAPR at 30 m above bottom (mab) failed to log. Batteries in MAPRs M12, M13, and M35 failed between early Nov and early Dec 2015. M34 recorded for the entire deployment, but data after ~February 2016 is unusable because of biofouling.
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See details of Mooring operations in the online cruise reports for 2015 and 2017:\u00a0
\nhttps://www.pmel.noaa.gov/eoi/axial/2015/Axial2015-Cruise-Report-with-logs-revised.pdf
\nhttps://www.pmel.noaa.gov/eoi/axial/2017/Axial-2017-CruiseReport-final-nologs.pdf
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For an example of using moored MAPRs to measure temporal changes in water turbidity, see (Dziak et al., 2015).
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Information on NOAA-PMEL MAPR:
\nhttps://www.pmel.noaa.gov/eoi/PlumeStudies/mapr/
Calibration information for MAPR sensors:
\nMAPR_calibration.txt
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BCO-DMO processing notes:
\n-Changed parameter names to BCO-DMO naming conventions
\n-Changed date-time to ISO format
\n-Added fields for latitude and longitude