sedtrap_carbon

 PI:              John Hedges
 of:              University of Washington
 dataset:         Deep sea sediment trap particle flux and 
                            carbon and nitrogen composition data
 project/cruise:  Arabian Sea
				set: TTN-041,
				serviced: TTN-047,
				recovered: TTN-055
 ship:            Thomas Thompson
 
PI Notes and Methodology
  
 Parameter         Description                                  Units

 site              Arabian Sea site designation
 mooring           Mooring identification
 trap_type         WM= wide mouth particle interceptor
                     (xs area 0.33 m2)
                   NM= narrow mouth particle interceptor
                     (xs area 0.017 m2)
                   IRS=indented rotating sphere valve in line
                   C=sample carousel in line
                   NVC=No Valve (and no carousel) Control
 deploy            Deployment number
 depth_trap        Depth of trap                                         meters
 date_set          Date of trap deployment                               YYYYMMDD
 lat               Latitude                                              decimal degrees
 lon               Longitude                                             decimal degrees
 carousel          Identification number of sample carousel
                     on multi-trap arrays
                      1 = carousel #1
                      2 = carousel #2
                      3 = carousel #1 & #2 combined
 cup               Sample cup number (position) in carousel 
 date_open         Date sample cup opened                                YYYYMMDD
 time_open         Time sample cup opened                                hhmm
 days_open         Elapsed time sample cup  collected particle flux      days
 sample_id         Unique analytical ID# given to each sample
 flux_tot          Particulate mass flux                                 mg/m2/day
 N_tot             Total nitrogen content of trapped                     percent
                     particulate matter  
 C_org             Organic carbon content of trapped                     percent
                     particulate matter  
 C_inog            Inorganic carbon content of trapped                   percent
                     particulate matter
 C_org_sol_flux    Total organic carbon dissolved in a sample's brine    mg C/m2/day
                     solution expressed as carbon flux