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Seth G. John
Affiliation:
University of Southern California (USC)
Address:
USC ZHS 117
2651 Trousdale Pkwy.
Los Angeles, CA
USA 90089
ORCiD:
0000-0002-8257-626X
Activities reported for Seth G. John:
Program coordination
None
Project coordination
Simons Collaboration on Ocean Processes and Ecology
(SCOPE)
Co-Principal Investigator
GEOTRACES Pacific section: Dissolved Fe, Cd, and Zn isotopes
(EPZT Diss Fe Zn Cd)
Principal Investigator, Contact
Experimental constraints on marine Fe isotope effects - Biology, ligands, and particles
(Fe isotope effects)
Principal Investigator, Contact
Collaborative Research: GEOTRACES Arctic Section: Marine Cycling of Bioactive Trace Metals in the Arctic Ocean
(GEOTRACES Arctic Bioactive Trace Metals)
Principal Investigator
The role of cryptic nutrient cycling within sinking particles on trace element transport in oxygen minimum zones
(OMZ Nutrient Cycling)
Co-Principal Investigator
Collaborative research: Combining models and observations to constrain the marine iron cycle
(Fe Cycle Models and Observations)
Principal Investigator
Collaborative research: US GEOTRACES PMT: Trace-metal concentrations and stable isotopes in the North Pacific
(PMT TM Stable Isotopes)
Principal Investigator
Collaborative Research: The impact of ocean warming on bioactive trace metal requirements and use efficiencies of marine nitrifying microorganisms
(Nitrifiers_TMReqs_OceanWarming)
Co-Principal Investigator
Deployment coordination
None
Datasets
Project:
Collaborative research: US GEOTRACES PMT: Trace-metal concentrations and stable isotopes in the North Pacific
Dataset
Version Date
Current State
Concentrations and stable isotopes of total and deionized water-soluble Fe, Zn, and Cd bulk aerosols and Fe concentrations and stable isotopes of coarse and fine aerosols from Leg 2 of the US GEOTRACES PMT cruise (GP15, RR1814) from Oct to Nov 2018
Co-Principal Investigator
2024-09-24
Data not available
Concentrations and stable isotopes of total and deionized water-soluble Fe, Zn, and Cd bulk aerosols and Fe concentrations and stable isotopes of coarse and fine aerosols from Leg 1 of the US GEOTRACES PMT cruise (GP15, RR1814) from Sept to Oct 2018
Co-Principal Investigator
2024-09-23
Data not available
Dissolved concentrations of nickel and copper from bottle samples collected on Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from October to November 2018
Principal Investigator
2022-12-15
Final with updates expected
Dissolved concentrations of nickel and copper from bottle samples collected on Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018
Principal Investigator
2022-12-15
Final with updates expected
Dissolved concentrations and stable isotope ratios of Fe, Zn, and Cd from Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from October to November 2018
Co-Principal Investigator
2022-12-06
Final no updates expected
Dissolved concentrations and stable isotope ratios of Fe, Zn, and Cd from Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018
Co-Principal Investigator
2022-12-06
Final no updates expected
Project:
Collaborative Research: US GEOTRACES PMT: Quantification of Atmospheric Deposition and Trace Element Fractional Solubility
Dataset
Version Date
Current State
Concentrations and stable isotopes of total and deionized water-soluble Fe, Zn, and Cd bulk aerosols and Fe concentrations and stable isotopes of coarse and fine aerosols from Leg 2 of the US GEOTRACES PMT cruise (GP15, RR1814) from Oct to Nov 2018
Co-Principal Investigator
2024-09-24
Data not available
Concentrations and stable isotopes of total and deionized water-soluble Fe, Zn, and Cd bulk aerosols and Fe concentrations and stable isotopes of coarse and fine aerosols from Leg 1 of the US GEOTRACES PMT cruise (GP15, RR1814) from Sept to Oct 2018
Co-Principal Investigator
2024-09-23
Data not available
Project:
The role of cryptic nutrient cycling within sinking particles on trace element transport in oxygen minimum zones
Dataset
Version Date
Current State
Concentrations of dissolved cadmium, nickel, manganese, lanthanum, cerium, praseodymium, and neodymium from the Eastern Tropical North Pacific Ocean on R/V Revelle cruise RR1804-1805 (OMZ Nutrient Cycling project)
Principal Investigator
2022-03-25
Final no updates expected
Isotopic composition and concentrations of dissolved and particulate nickel, cadmium, iron, zinc, and copper from the Eastern Tropical North Pacific Ocean on R/V Revelle cruise RR1804 and on R/V Sikuliaq cruise SKQ201617S
Principal Investigator
2021-02-25
Final no updates expected
Project:
Collaborative Research: GEOTRACES Arctic Section: Marine Cycling of Bioactive Trace Metals in the Arctic Ocean
Dataset
Version Date
Current State
Concentrations and stable isotope ratios of Fe, Zn, and Cd from the US GEOTRACES Arctic cruise GN01 (HLY1502) from August to October 2015
Principal Investigator
2020-05-20
Final no updates expected
Project:
US GEOTRACES Pacific Meridional Transect (GP15)
Dataset
Version Date
Current State
Concentrations and stable isotopes of total and deionized water-soluble Fe, Zn, and Cd bulk aerosols and Fe concentrations and stable isotopes of coarse and fine aerosols from Leg 2 of the US GEOTRACES PMT cruise (GP15, RR1814) from Oct to Nov 2018
Co-Principal Investigator
2024-09-24
Data not available
Concentrations and stable isotopes of total and deionized water-soluble Fe, Zn, and Cd bulk aerosols and Fe concentrations and stable isotopes of coarse and fine aerosols from Leg 1 of the US GEOTRACES PMT cruise (GP15, RR1814) from Sept to Oct 2018
Co-Principal Investigator
2024-09-23
Data not available
Dissolved concentrations of nickel and copper from bottle samples collected on Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from October to November 2018
Principal Investigator
2022-12-15
Final with updates expected
Dissolved concentrations of nickel and copper from bottle samples collected on Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018
Principal Investigator
2022-12-15
Final with updates expected
Dissolved concentrations and stable isotope ratios of Fe, Zn, and Cd from Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from October to November 2018
Co-Principal Investigator
2022-12-06
Final no updates expected
Dissolved concentrations and stable isotope ratios of Fe, Zn, and Cd from Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018
Co-Principal Investigator
2022-12-06
Final no updates expected
Project:
Experimental constraints on marine Fe isotope effects - Biology, ligands, and particles
Dataset
Version Date
Current State
Experimental determination of Fe isotope effect for reduction from Fe(III) to Fe(II)
Principal Investigator
2019-05-09
Data not available
Particulate iron (pFe) isotope concentrations from the GEOTRACES EPZT cruise (R/V Thomas G. Thompson TN303) in the Eastern Tropical Pacific from October to December 2013
Principal Investigator
2016-12-09
Final no updates expected
Project:
GEOTRACES Pacific section: Dissolved Fe, Cd, and Zn isotopes
Dataset
Version Date
Current State
Particulate iron (pFe) isotope concentrations from the GEOTRACES EPZT cruise (R/V Thomas G. Thompson TN303) in the Eastern Tropical Pacific from October to December 2013
Principal Investigator
2016-12-09
Final no updates expected
Dissolved (0.4 micron filtered) Fe, Zn and Cd isotope ratios and concentrations across GEOTRACES-EPZT, from cruise TN303, 2013
Principal Investigator
2016-06-21
Final no updates expected
Project:
U.S. Arctic GEOTRACES Study (GN01)
Dataset
Version Date
Current State
Concentrations and stable isotope ratios of Fe, Zn, and Cd from the US GEOTRACES Arctic cruise GN01 (HLY1502) from August to October 2015
Principal Investigator
2020-05-20
Final no updates expected
Project:
Trace-metal isotopes in Atlantic seawater and particles from Geotraces transects A03 and A10
Dataset
Version Date
Current State
Dissolved Fe stable isotope ratios and concentrations collected from the RRS Discovery (D357) and RRS James Cook (JC068) from the North Atlantic in 2010-2011
Principal Investigator
2016-11-30
Final no updates expected
Project:
U.S. GEOTRACES East Pacific Zonal Transect (GP16)
Dataset
Version Date
Current State
Particulate iron (pFe) isotope concentrations from the GEOTRACES EPZT cruise (R/V Thomas G. Thompson TN303) in the Eastern Tropical Pacific from October to December 2013
Principal Investigator
2016-12-09
Final no updates expected
Dissolved (0.4 micron filtered) Fe, Zn and Cd isotope ratios and concentrations across GEOTRACES-EPZT, from cruise TN303, 2013
Principal Investigator
2016-06-21
Final no updates expected
Project:
U.S. GEOTRACES North Atlantic Transect (GA03)
Dataset
Version Date
Current State
Particulate Fe isotopes (d56Fe, labile d56Fe, labile[Fe], [Cd], [Ba], and [P]) from R/V Knorr cruises KN199-04, KN204-01 in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)
Principal Investigator, Contact
2013-11-08
Final no updates expected
Dissolved Fe, Zn and Cd concentrations and isotope ratios from R/V Knorr KN199-04, KN204-01 in the subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)
Principal Investigator
2016-11-30
Final no updates expected