Abstract:

This dataset contains Multiple Opening Closing Net and Environmental Sensing System(s) (MOCNESS) instruments data collected aboard the R/V Point Sur cruise PS19-04 in the Gulf of Mexico from 2018-07-19 to 2018-08-01. The MOCNESS was deployed during the DEEPEND field program and collected data (e.g., pressure, temperature, salinity, water flow, volume filtered, horizontal and vertical velocity, latitude, and longitude) from several sensors while the instrument was in use. These data helped characterize the environment and assess the orientation and speed of the MOCNESS. The flow and net angle were used to calculate the volume of water filtered for each net. The dataset also includes trawl field data collected during this cruise and includes information on trawl ID/number, cruise name/number, types of gear used, station, sample, date, location (latitude and longitude), time, depth, temperature, salinity, the volume of water, net mesh size/units, and related comments. The overall purpose of the R/V Point Sur cruise PS19-04 led by chief scientist Dr. Tracey Sutton was to perform deep water sampling of in-situ seawater and associated fauna.

Suggested Citation:

Gray Lawson and Travis Richards. 2020. Multiple Opening Closing Net Environmental Sensing System (MOCNESS) instrument data collected aboard from R/V Point Sur cruise PS19-04 in the Gulf of Mexico from 2018-07-19 to 2018-08-01. Distributed by: Gulf of Mexico Research Initiative Information and Data Cooperative (GRIIDC), Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/n7-j3c9-4s47

Purpose:

To collect environmental data associated with the biological samples collected in the 10-meter Multiple Opening Closing Net and Environmental Sensing System (MOCNESS).

Data Parameters and Units:

Main parameters: Time [elapsed time in [sec]], latitude [degrees], longitude [degrees], station number, pressure[dBar], temperature [deg C], salinity [%], sigma_t [kg/m^3], potential temperature [degC], signal strength/echo intensity [ counts], water flow [m/s], vertical velocity [m/s], volume filtered [m^3]. The file "DP06_Trawl_Field_Data.xlsx": 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, Quant or Meat - trawl purpose, SampleDate - sample date (DDMMMYY), StartLat - starting latitude (dd), StartLon - starting longitude (dd), EndLat - ending latitude (dd), EndLon - ending longitude (dd), TowStartTime_CDT - start time (HH:MM), TowEndTime_CDT - end time (HH:MM), ElapsedTime - trawl duration (HH:MM), MOC10FileName - unique file name, MinDepth - minimum depth (m), MaxDepth - maximum depth (m), DepthRange - depth range (m), DepthCode - depth code, DepthBin - depth bin, MaxWaterDepth - maximum water depth (m), Temp_min (degrees Celsius), Temp_Max (degrees Celsius), Salinity_min, Salinity_max, Net_angle, MaxDeployDepth - maximum deployment depth (m), DepthUnits - depth units, Volume - volume of water (cubic m), VolUnits - volume units, NetMeshSize - net mesh size (mm), NetMeshSizeUnits - net mesh size units, SampPres - type of sample preservation, Comments. Note: Dataset also includes cruise logbook, MOCNESS datasheets, and cruise data documentation.

Individual Files: