Abstract:

The Multiple Opening Closing Net and Environmental Sensing System(s) (MOCNESS) deployed during the DEEPEND field program collects data (e.g., pressure, temperature, conductivity, volume filtered, horizontal and vertical velocity, latitude, and longitude) from several sensors while the instrument is in use. These data help characterize the environment and assess the orientation and speed of the MOCNESS. The flow and net angle can be used to calculate the volume of water filtered for each net. The biological data and ship data collected during this cruise are available in GRIIDC datasets R4.x257.226:0004 and R4.x257.226:0012 respectively.

Suggested Citation:

Sutton, Tracey. 2017. Multiple Opening Closing Net Environmental Sensing System (MOCNESS) instrument data for Cruise DP03 R/V Point Sur in-situ deep seawater and associated fauna, April 30 - May 16, 2016, Viosca Knoll Gulf of Mexico. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N72805Q8

Purpose:

To collect environmental data associated with the biological samples collected in the 10 meter MOCNESS.

Data Parameters and Units:

.PRO files: time - elapsed time (s), pres - pressure (decibars), echo(N/A), temp - temperature (degrees Celsius), theta - potential temperature (degrees Celsius), sal - salinity (percentage), sigmawater - water density (calculated from depth, temp, and salinity - kg/m^3), angle - net angle (degrees), flow (m/s), hzvel - horizontal velocity (m/s), vtvel - verticle velocity (m/s), vol - volume filtered (cubic meters), net (N/A), fluor (N/A), ptran (N/A), oxygen (N/A), Irradcurrent (N/A), Irradiance (N/A) , lat (N/A), lon (N/A) Zero values indicate variable not measured. Data organized into folders named by trawl number and date .xlsx Files: EntryNum - record ID, TrawlNo - trawl ID, TrawlNo_NetNo - trawl and net #, CruiseName - cruise name, CruiseNo - cruise #, Gear - type of gear, StationID - station ID, SolarCycle - solar cycle (day/night), NetNo - net number, SampleID - sample ID, SampleDate - sample date (DDMMMYY), StartLat - starting lat (dd),StartLon - starting lon (dd), EndLat - ending lat (dd), EndLon - ending lon (dd), TowStartTime_CDT - start time (HH:MM), TowEndTime_CDT - end time (HH:MM), ElapsedTime - trawl duration (HH:MM), MOC10FileName - unique file name, MinDepth - min. depth (m), MaxDepth - max depth (m), DepthRange - depth range (m), DepthCode - depth code, DepthBin - depth bin, MaxWaterDepth - max water depth (m), MaxDeployDepth - max deployment depth (m), DepthUnits - depth units, Temp min (deg C), Temp max (deg C), Salinity min, Salinity max, Net angle, Volume - volume of water (cubic m), VolUnits - volume units, Quant_or_Meat - trawl purpose, NetMeshSize - net mesh size, NetMeshSizeUnits - net mesh size units, SampPres - type of sample preservation, Comments .RAW files: Date (MM/DD/YYYY), Conductivity Probe #, Temperature Probe #, Pressure Probe # .TAB files: Yearday/Time, HH:MM:SS, min depth (pmin, meters), max depth (pmax, meters), average depth (pavg), min temperature (tmin, deg C), max temperature (tmax, deg C), average temperature (tavg, deg C), density (thmin, no units), density (thmax, no units), density (thavg, no units), sigma (smin, no units), sigma (smax, no units), sigma (savg, no units), beam attenuation (cmin, meters), beam attenuation (cmax, meters), beam attenuation (cavg, meters), fluorescence (fmin, volts), fluorescence (fmax, volts), fluorescence (favg, volts), oxygen (oxmin, ml/l), oxygen (oxmax, ml/l), oxygen (oxavg, ml/l), irradiance (irrmin, volts), irradiance, (irrmax, volts), irradiance (irravg, volts), # observed, volume (m^3)

Individual Files: