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

Status message

Database

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Seth G. John

Activities reported for Seth G. John: