pore_water

 PI:              Fred Sayles and William Martin
 of:              Woods Hole Oceanographic Institution
 data set:        Pore water composition
 project/cruise:  AESOPS NBP98-2, Benthic Processes cruise
 ship:            Nathaniel B. Palmer

 Sampling Methodology 

 Parameters   Descriptions                                    Units
 

 event        event number from event log
 sta          station number from event log
 site         sediment trap mooring number
 deploy_id    type of sampling device:
                MC=MultiCorer
                WHIMP=Woods Hole Interstitial Marine Probe
 depth_w      ocean depth                                     meters
 method       sampling method employed
                ISPW  - in situ harpon-type sampling;
                        coarse resolution
                ISWCS - in situ whole-core squeezing;
                        high resolution
                LWCS  - laboratory whole-core squeezing;
                        high resolution
                SC    - laboratory sectioning and
                        centrifugation
 depth_core   average depth (from core top) of sediment       centimeters
                sampling interval (negative numbers refer
                to water or fluff layer above the
                sediment-water interface)
 NO3          pore water nitrate + nitrite                    micromoles/liter
 NO3_sd       1 standard deviation uncertainty                micromoles/liter
 SiO2         pore water silicate                             micromoles/liter
 SiO2_sd      1 standard deviation uncertainty                micromoles/liter
 TCO2         pore water total carbon dioxide                 micromoles/liter
 TCO2_sd      1 standard deviation uncertainty                micromoles/liter
 Alk          pore water titration alkalinity                 microequiv/liter
 Alk_sd       1 standard deviation uncertainty                microequiv/liter
 O2           pore water dissolved oxygen                     micromoles/liter
 PO4          pore water phosphate                            micromoles/liter
 NH4          pore water ammonium                             micromoles/liter