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RV Thomas G. Thompson TN303 (EPZT, GP16)

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Thomas G. Thompson (3250)
Cruise identifierTN303 (EPZT, GP16)
Cruise period2013-10-25 — 2013-12-20
StatusCompleted
Port of departureBahia De Manta, Ecuador
Port of returnPapeete, French Polynesia
PurposeResearch
ObjectivesUS GEOTRACES East Pacific Zonal Transect (EPZT), a survey consisting of rosette/CTD casts, McLane in situ pump and 7Be pump casts and a variety of underway measurements. A sea-going science team gathered from 15 oceanographic institutions participated.

Two types of rosette/SBE9plus CTD casts (ODF/30L-Niskin and GT-C/12L-GoFlo) were made at 36 station locations. Deep ODF/30L-Niskin casts included a device suspended 20 meters below the rosette, designed to either take a core sample or pick up particulates from the sea floor. Shallow and deep McLane pump profiles were done at all Full stations, with an additional mid-water profile at Super Stations. An SBE19plus CTD was attached to the end of the McLane wire on all but seven deep pump casts, when it was attached to the ODF rosette instead. Water was pumped and filtered for Beryllium-7 analysis on some stations. Underway samples were also collected for multiple programs, and five ARGO floats were deployed during the eastern half of the cruise for the University of Washington.
Chief scientistChristopher R German (Woods Hole Oceanographic Institution - Geology and Geophysics Department), Gregory A Cutter (Old Dominion University Department of Ocean, Earth and Atmospheric Sciences), James Moffett (University of Southern California, USA)
ProjectGEOTRACES -Trace elements and their isotopes in the water column
Cruise reportRV Thomas G. Thompson TN303 (EPZT, GP16) cruise report thomasgthompson_tn303.pdf (1.38 MB) 
Ocean/sea areas 
GeneralSouth Pacific Ocean
SpecificEastern tropical Pacific
Track chartsRV Thomas G. Thompson TN303 (EPZT, GP16) cruise track — thomasgthompson_tn303trk.pdf (0.32 MB) 
Data held at BODC 
Discrete samples 
68  All plastic clean surface pumped supplyMetal ligand parameters in the water column
Particulate metal concentrations in the water column
Organosulphur and organoselenium species concentration parameters in water bodies
Nitrite concentration parameters in the water column
Concentration of inorganic halogens in water bodies
Salinity of the water column
Phosphate concentration parameters in the water column
Dissolved trace metalloid and inorganic selenium concentrations in water bodies
Stable isotopes in water bodies
Dissolved organic carbon concentration in the water column
Silicate concentration parameters in the water column
Particulate total and organic phosphorus concentrations in the water column
Nitrate concentration parameters in the water column
Radioactivity in water bodies
Metadata parameters
Dissolved metal concentrations in the water column
17  Atmospheric air sampling pumpSulphur species concentrations in the atmosphere
Metal concentrations in the atmosphere
Atmospheric particulates
Concentration of nitrogen species in the atmosphere
Concentration of inorganic halogens in the atmosphere
130  CTD frame plus rosette samplerMetal ligand parameters in the water column
Particulate metal concentrations in the water column
Nitrite concentration parameters in the water column
Carotenoid and flavenoid pigment concentrations in water bodies
Concentration of inorganic halogens in water bodies
Organometallic and organometalloid species concentration parameters in water bodies
Salinity of the water column
Phosphate concentration parameters in the water column
Temperature of the water column
Dissolved oxygen parameters in the water column
Dissolved trace metalloid and inorganic selenium concentrations in water bodies
Water body released tracers
Stable isotopes in water bodies
Dissolved organic carbon concentration in the water column
Silicate concentration parameters in the water column
Dissolved noble gas concentration parameters in the water column
Particulate total and organic phosphorus concentrations in the water column
Nitrate concentration parameters in the water column
Radioactivity in water bodies
Metadata parameters
Chlorofluorocarbon concentrations in the water column
Dissolved metal concentrations in the water column
Chlorophyll pigment concentrations in water bodies
20  Sample taken from ship's non-toxic supplySalinity of the water column
Water body released tracers
Radioactivity in water bodies
Chlorofluorocarbon concentrations in the water column
59  Stand-alone pumpsParticulate metal concentrations in the water column
Nitrite concentration parameters in the water column
Organometallic and organometalloid species concentration parameters in water bodies
Salinity of the water column
Phosphate concentration parameters in the water column
Particulate trace metalloid and inorganic selenium concentrations in water bodies
Stable isotopes in water bodies
Concentration of suspended particulate material in the water column
Silicate concentration parameters in the water column
Particulate total and organic phosphorus concentrations in the water column
Particulate inorganic carbon concentrations in the water column
Nitrate concentration parameters in the water column
Radioactivity in water bodies
Metadata parameters
Dissolved metal concentrations in the water column
Concentration of silicon species in the water column
Concentration of inorganic sulphur species in the water column
Particulate total and organic carbon concentrations in the water column
21  Unknown water sampling deviceRadioactivity in water bodies
72  Metal ligand parameters in the water column
Particulate metal concentrations in the water column
Organosulphur and organoselenium species concentration parameters in water bodies
Nitrite concentration parameters in the water column
Concentration of inorganic halogens in water bodies
Organometallic and organometalloid species concentration parameters in water bodies
Salinity of the water column
Phosphate concentration parameters in the water column
Temperature of the water column
Dissolved oxygen parameters in the water column
Dissolved trace metalloid and inorganic selenium concentrations in water bodies
Water body released tracers
Stable isotopes in water bodies
Dissolved organic carbon concentration in the water column
Silicate concentration parameters in the water column
Dissolved noble gas concentration parameters in the water column
Particulate total and organic phosphorus concentrations in the water column
Nitrate concentration parameters in the water column
Radioactivity in water bodies
Metadata parameters
Chlorofluorocarbon concentrations in the water column
Dissolved metal concentrations in the water column