of: Texas A&M University dataset: Cruise event log dates: November 30, 1995 to December 26, 1995
location: N: 22.5171 S: 9.9591 W: 57.2992 E: 68.7849
project: TTN-054 Process Cruise 7 (Early NE Monsoon)
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.