Event Log version November 9, 1995 US JGOFS Arabian Sea study TTN-049, Process cruise 4, R/V Thomas G. Thompson Dates: from July 18, 1995 to August 13, 1995 Chief Scientist: Richard Barber Cruise track and notes 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. 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 = CTD or TM cast number within a station location (added 090423) 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 (negative = south) in decimal degrees lon = starting longitude for each event (negative = west) in decimal degrees 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, 3digits 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 = A code identifying "no data"; used for missing data entries, incomplete entries or bad data.