log

 

  


  
  

  


  Arabian Sea Process Study

log 
  PI:             John Marra 
  of:             Lamont-Doherty Earth Observatory
  dataset:        Cruise event log
  dates:          March 14, 1995 to April 08, 1995 
  location:       N: 22.5  S: 10  W: 57.3  E: 68.75
  project:        TTN045/Process Cruise 2 (Spring Intermonsoon)
  ship:           R/V Thomas G. Thompson

  Some activities, such as aerosal sampling, sampling from the ship's seawater 
  system, and continuous underway sampling (weather, solar radiation, Sea Beam) 
  are not reported in the log. 


 Parameter             Description                                    Units


 year                  year cruise took place. 
 event                 A unique number assigned to each over the 
                       side sampling activity. This number is a 
                       composite of date and time UTC(GMT) in the
                       form MMDDHHmm that indicates the starting
                       time of the sampling activity. Generally, 
                       one event began as the preceding event ended. 
 sta                   Station. A unique number designating a 
                       general geographic location at which a suite 
                       of sampling activities may occur; occupied 
                       sequentially during the cruise 
 cast_type             a sampling activity identifier, where: 
                       CTD = CTD rosette bottle cast 
                       TM = trace metal free rosette bottle cast 
 lat                   starting latitude for each event               decimal degrees 
                       (negative = south)
 lon                   starting longitude for each event              decimal degrees
                       (negative = west)
 activity_and_comments Identifies the sampling method, generally 
                       followed by a sampling sequence number for
                       that method.  CTD or Trace Metal(TM) casts 
                       were also designated by an 8 digit unique 
                       number consisting of: (3 digits for cruise, 
                       3 digits for station, and 2 digits for 
                       sequence). 
 seq                   is a sequential (within each station) entry
                       in the bridge log of all over the side 
                       activities for which gear was deployed. 
 person                Name of the scientist(s) involved in the 
                       particular sampling event or responsible for 
                       the resulting data. 
 nd is a code identifying "no data"; used for missing
                       data entries, incomplete entries or bad data.