RV Thomas G. Thompson TN303 (EPZT, GP16)
Cruise summary report
Cruise Info. | |
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Ship name (ship code) | RV Thomas G. Thompson (3250) |
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Cruise identifier | TN303 (EPZT, GP16) |
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Cruise period | 2013-10-25 — 2013-12-20 |
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Status | Completed |
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Port of departure | Bahia De Manta, Ecuador |
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Port of return | Papeete, French Polynesia |
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Purpose | Research |
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Objectives | US 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. |
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Chief scientist | Christopher 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) |
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Project | GEOTRACES -Trace elements and their isotopes in the water column |
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Cruise report | (1.38 MB) |
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Ocean/sea areas | |
General | South Pacific Ocean |
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Specific | Eastern tropical Pacific |
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Track charts | (0.32 MB) |
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Data held at BODC | |
Discrete samples | |
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68 All plastic clean surface pumped supply | |
17 Atmospheric air sampling pump | |
130 CTD frame plus rosette sampler | |
20 Sample taken from ship's non-toxic supply | |
59 Stand-alone pumps | |
21 Unknown water sampling device | |
72 | |