sedtrap_biomarker

 PI:               Fredrick G. Prahl
 of:               Oregon State University
 dataset:          deep sea sediment trap biomarker data
 project/cruise:   Arabian Sea
                        set: TTN-041
			serviced: TTN-047
			recovered: TTN-055
 ship:             R/V Thomas Thompson
 

 Reference:  Prahl, F.G., Diamond, J. and Sparrow, M.A., 2000, Annual biomarker record for
             export production in the central Arabian Sea, Deep-Sea Research II 47, 1581-1604


 Parameter     Description                                    Units

 site          Arabian Sea site designation
 mooring       mooring identification
 trap_type     sediment trap type: shallow, middle, deep;
                 13 or 21 cups
 trap_id       unique identifier for each sediment trap
 deploy        deployment number
 depth_trap    depth of trap                                  meters
 date_set      date of trap deployment                        YYYYMMDD
 lat           latitude (negative = south)                    decimal degrees
 lon           longitude (negative = west)                    decimal degrees
 cup           sediment trap cup number
 date_open     date sediment trap opened                      YYYMMDD
 time_open     time of day sediment trap opened               hhmm
 days_open     number of days trap remained open              day
 flux_tot      total particle flux recovered                  mg/m2/day
 C_org         organic carbon, particle size < 1mm            % of total flux
 C27_to_31     sum of C27, C29, C31 n-alkanes                 micrograms/gram dry
 Cmax          maximum C measured in n-alkanes
 LCK           C37, C38, C39 alkenones                        micrograms/gram dry
 Uk37          alkenone unsaturation
 HBI           total highly branched C25 isoprenoid alkenes   micrograms/gram dry
 Cholesterol   cholesterol                                    micrograms/gram dry
 12OHC28FA     12-hydroxyoctacosanoic acid                    micrograms/gram dry
 24EtChol      24-ethylcholesta-5-enol                        micrograms/gram dry
 Dinosterol    dinosterol                                     micrograms/gram dry
 C32Hop        C32 hopan-32-ol                                micrograms/gram dry