Instrument: GeoFish Towed near-Surface Sampler

Acronym:

GeoFish

External Identifier:

» skos:broadMatch http://vocab.nerc.ac.uk/collection/L05/current/31/

Description

The GeoFish towed sampler is a custom designed near surface (<2m) sampling system for the collection of trace metal clean seawater. It consists of a PVC encapsulated lead weighted torpedo and separate PVC depressor vane supporting the intake utilizing all PFA Teflon tubing connected to a deck mounted, air-driven, PFA Teflon dual-diaphragm pump which provides trace-metal clean seawater at up to 3.7L/min. The GeoFish is towed at up to 13kts off to the side of the vessel outside of the ship's wake to avoid possible contamination from the ship's hull. It was developed by Geoffrey Smith and Ken Bruland (University of California, Santa Cruz).

Datasets

Dataset Name	Brief Description
Barium-isotopic profile SAFe	Barium concentration and isotopic data from SAFe, collected during the 2nd GEOTRACES Intercalibration cruise.
Dissolved Fe conc and isotopes - UK_GA10	Dissolved (0.2 micron filtered (<75 m depth) or 0.4 micron (>75 m depth) Fe stable isotope ratios and concentrations
Dissolved trace metals and macronutrients from a 2014 IRNBRU cruise Surface Data	Dissolved trace metals and macronutrients from a 2014 IRNBRU cruise Surface Data
GP15 Bottle Leg 1	Bottle file from US GEOTRACES PMT (GP15) Leg 1 (RR1814)
GP15 Bottle Leg 2	Bottle file from US GEOTRACES PMT (GP15) Leg 2
GP15 Dissolved and Labile Cobalt Leg 1	Dissolved Cobalt and Labile Cobalt from Leg 1 of the GP15 GEOTRACES Pacific Meridional Transect
GP15 Dissolved and Labile Cobalt Leg 2	Dissolved Cobalt and Labile Cobalt from Leg 2 of the GP15 GEOTRACES Pacific Meridional Transect
GP15 Dissolved Ba Cd Cu Ga Mn Ni and Pb Leg 1	Dissolved concentrations of Ba, Cd, Cu, Ga, Mn, Ni, and Pb from US GEOTRACES GP15-Leg 1 ("PMT") from the Aleutians to Hawaii along 152 W
GP15 Dissolved Ba Cd Cu Ga Mn Ni and Pb Leg 2	Dissolved concentrations of Ba, Cd, Cu, Ga, Mn, Ni, and Pb from US GEOTRACES GP15-Leg 2 ("PMT") from the Hawaii to Tahiti along 152 W.
GP15 Dissolved Rare Earth Elements Leg 1	GP15 Dissolved Rare Earth Elements Leg 1
GP15 Dissolved Rare Earth Elements Leg 2	GP15 Dissolved Rare Earth Elements Leg 2
GP15 Dissolved Th and Pa - Leg 1	GP15 Dissolved Th and Pa - Leg 1
GP15 Dissolved Th and Pa - Leg 2	GP15 Dissolved Th and Pa - Leg 2
GP15 Fe Zn Cd Dissolved and Stable Isotope Ratios - Leg 1	GP15 Fe Zn Cd Dissolved and Stable Isotope Ratios - Leg 1
GP15 Fe Zn Cd Dissolved and Stable Isotope Ratios - Leg 2	GP15 Fe Zn Cd Dissolved and Stable Isotope Ratios - Leg 2
GP15 FIA Dissolved Al Fe Mn Leg 1	GP15 FIA Dissolved Al Fe Mn Leg 1
GP15 FIA Dissolved Al Fe Mn Leg 2	GP15 FIA Dissolved Al Fe Mn Leg 2
GP15 pH Leg 1	Water column fish and bottle pH data
GP15 pH Leg 2	Water column fish and bottle pH data
GP15 Surface Fish Dissolved Metals Leg 1	GP15 Surface Fish Dissolved Metals Leg 1
GP15 Surface Fish Dissolved Metals Leg 2	GP15 Surface Fish Dissolved Metals Leg 2
GP15 TDS and OCS Leg 1	GP15 TDS and OCS Leg 1
GP15 TDS and OCS Leg 2	GP15 TDS and OCS Leg 2
GP16 Barium Dissolved	Dissolved Barium (Ba) in US GEOTRACES East Pacific Zonal Transect, GP16.
GP16 Cellular element quotas	Element quotas of individual phytoplankton cells
GP16 Cobalt Total and Labile Dissolved	Total dissolved cobalt and labile cobalt concentrations measured by cathodic stripping voltammetry.
GP16 Copper Speciation	Copper speciation results for dissolved organic copper binding ligand concentrations, stability constants, and free copper for the U.S. GEOTRACES Equatorial Pacific cruise
GP16 Cu Ni Mn V	Dissolved copper, nickel, manganese, and vanadium from GeoFISH and bottle samples
GP16 Dissolved Aluminum	Concentrations of dissolved aluminum in samples collected on the U.S. GEOTRACES EPZT cruise
GP16 Dissolved Iron - ODU	Water-column dissolved iron (Fe) concentrations for major stations occupied during U.S. GEOTRACES EPZT cruise; post-cruise analyses conducted at Old Dominion University
GP16 Dissolved iron speciation	Dissolved iron speciation from 2013 U.S. GEOTRACES Eastern Pacific Zonal Transect
GP16 Dissolved Manganese	Concentrations of dissolved manganese (Mn) in water-column samples from major stations that were occupied during the U.S. GEOTRACES EPZT cruise
GP16 Dissolved Nd Isotopes and REEs - LDEO	GP16 Dissolved Nd Isotopes and REEs - LDEO
GP16 Dissolved REEs - OSU	GP16 Dissolved REEs - OSU
GP16 Gallium dissolved	Dissolved Gallium (Ga) from R/V Thomas G. Thompson cruise TN303 (GP16) in the Eastern Tropical Pacific in 2013 (U.S. GEOTRACES EPZT project)
GP16 GeoFish - Nuts and Sals	GeoFish - Nuts and Sals
GP16 Iron Zinc and Cadmium isotopes dissolved	Dissolved (0.4 micron filtered) Fe, Zn and Cd isotope ratios and concentrations across GEOTRACES-EPZT
GP16 Lead dissolved	Dissolved Pb data from US GEOTRACES East Pacific Zonal Transect
GP16 Molybdenum dissolved	Dissolved molybdenum data from GeoFISH and Bottle samples
GP16 Particulate Elements Geo-FISH	Trace element concentrations in suspended particles collected from the GeoFISH
GP16 Pb Isotope Ratios	Pb isotope ratios from TN303 (GP16), GEOTRACES EPZT
GP16 Selenium iodine and arsenic species from Super GeoFish	Arsenate, Iodide, Selenium depth profiles collected from the Super-GeoFish
GP16 Thorium and Protactinium dissolved	Depth profiles of seawater dissolved 232Th, 230Th, and 231Pa
GP17-OCE Dissolved Gallium in the South Pacific Ocean	GP17-OCE Dissolved Gallium in the South Pacific Ocean
GT10 - As AP Surface Transects	Surface transects for arsenic speciation, antimony speciation, and alkaline phosphatase activity
GT10 - Fe Soluble	Soluble iron (Fe) passed through 10 kDa cross-flow filter, from GT10 cruise.
GT10 - FIA-AlFe	Shipboard flow injection analyis (FIA) of dissolved Al and Fe.
GT10 - Nanomolar Nutrients - Profiles	Nanomolar concentrations of PO4, NO3, NO2 (profile)
GT10 - Nanomolar Nutrients - Surface	Nanomolar concentrations of PO4, NO3, NO2 (surface)
GT10-11 - cellular element quotas	Element quotas of individual phytoplankton cells
GT10-11 - Co Total Dissolved and Labile	Total dissolved Cobalt and labile Cobalt concentrations from KN199-04 and KN204-01.
GT10-11 - Cu Speciation	Total dissolved copper and estimates of free Cu2+, ligand concentrations, and conditional stability constants
GT10-11 - dFe and dFe-II	Concentrations of dissolved iron and dissolved iron(II), U.S. GEOTRACES transects
GT10-11 - Dissolved and Particulate Th and Pa	Depth profiles of seawater dissolved and small and large particulate 232Th, 230Th, and 231Pa
GT10-11 - Dissolved Fe Zn Cd conc and isotopes	Dissolved Fe, Zn and Cd concentrations and isotope ratios
GT10-11 - Fe Speciation	Profiles of concentrations of dissolved iron-binding ligands and their respective conditional stability constants
GT10-11 - GaBa_surface	Dissolved Ga and Ba from surface tows from GT10 and GT11 cruises.
GT10-11 - Neodymium - LDEO	seawater Nd isotopes and concentrations from the US-GEOTRACES North Atlantic zonal transect (NAZT)
GT10-11 - Neodymium - UH	seawater Nd isotopes and concentrations from the US-GEOTRACES North Atlantic zonal transect (NAZT)
GT10-11 - Neodymium - USC	seawater Nd isotopes and concentrations from the US-GEOTRACES North Atlantic zonal transect (NAZT)
GT10-11 - Pb Dissolved	Dissolved lead (Pb), less than 0.2 um, from GT10 and GT11 cruises.
GT10-11 - Pb isotope ratios	Isotope ratios of Pb passing through a 0.2 um Acropak capsule filter from the GEOTRACES North Atlantic Transect.
GT10-11 - REEs	Dissolved Rare Earth Element (REE) Concentrations in NAZT Section GA03
GT10-11 - Trace Element Profiles	Trace element profiles from GT-10 and GT-11
GT10-11 - Trace Element References	SAFe and GEOTRACES trace element references
GT11 - As AP Surface Transects	Surface transects for arsenic speciation, antimony speciation, and alkaline phosphatase activity
GT11 - Fe Soluble	Soluble Fe passed through 0.2 um Anopore filter, from GT11 cruise.
GT11 - FIA-AlFeMn	Shipboard flow injection analyis (FIA) of dissolved Al, Fe, and Mn.
GT11 - Nanomolar Nutrients - Surface	Nanomolar concentrations of PO4, NO3, NO2 (surface)
Gulf of Alaska Al and Mn - Surface Samples	Gulf of Alaska Al and Mn - Surface Samples
HOT LAVA Nitrogen	Water column nitrate+nitrite d15N and d18O and total dissolved nitrogen d15N measurements
iron and nutrients - underway	iron and nutrients from underway samples
MV1405 CTD seawater samples and locations	Physical and chemical properties of surface seawater obtained by CTD
MV1405 particulate data	IronBru particulate data organized by station and transect.
MV1405 Q Incubations	Q incubation data from MV1405

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Instrument: GeoFish Towed near-Surface Sampler