Douglas E. Hammond

Affiliation:

University of Southern California (USC)

Address:

3651 Trousdale Pkwy
Earth Sciences ZHS117
Los Angeles, CA
USA 90089-0740

ORCiD:

0000-0002-4393-9777

Activities reported for Douglas E. Hammond:

Program coordination

None

Project coordination

Applying O2/Ar, DELTA17O and 222Rn methodologies to constrain organic carbon productivity in the upper ocean of the ETSP (NCP and GPP in the ETSP)	Co-Principal Investigator
Collaborative Research: Use of Triple Oxygen Isotopes and O2/Ar to constrain Net/Gross Oxygen Production during upwelling and non-upwelling periods in a Coastal Setting (UpRISEE O2 upwelling)	Principal Investigator, Contact
GEOTRACES Arctic Section: Actinium-227 as a Naturally-occurring Tracer of Dissolved Material Transport in the Arctic Ocean (GT Arctic 227Ac)	Principal Investigator, Contact
U.S. GEOTRACES Pacific Meridional Transect: Measurements of Actinium-227 to Trace Solute Transport (PMT Actinium-227)	Principal Investigator, Contact

Deployment coordination

None

Datasets

Project: U.S. GEOTRACES Pacific Meridional Transect: Measurements of Actinium-227 to Trace Solute Transport

Dataset	Version Date	Current State
Activity of actinium-227 from water 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 Oct-Nov 2018 Principal Investigator	2024-10-23	Data not available
Activity of actinium-227 from water 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	2024-10-23	Data not available

Project: GEOTRACES Arctic Section: Actinium-227 as a Naturally-occurring Tracer of Dissolved Material Transport in the Arctic Ocean

Dataset	Version Date	Current State
Water column profiles of dissolved Actinium-227 (227Ac) from the U.S. GEOTRACES Arctic cruise (HLY1502; GN01) on USCGC Healy from August to October 2015 Principal Investigator	2020-10-02	Data not available

Project: OCE-RIG: The impact of submesoscale processes on oligotrophic carbon cycling and the sensitivity of this interaction to climatically driven changes

Dataset	Version Date	Current State
Gridded in-situ profiles from glider deployments in the San Pedro Channel, CA in 2013 and 2014 Co-Principal Investigator	2018-12-19	Final no updates expected

Project: US GEOTRACES Pacific Meridional Transect (GP15)

Dataset	Version Date	Current State
Activity of actinium-227 from water 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 Oct-Nov 2018 Principal Investigator	2024-10-23	Data not available
Activity of actinium-227 from water 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	2024-10-23	Data not available

Project: Collaborative Research: Use of Triple Oxygen Isotopes and O2/Ar to constrain Net/Gross Oxygen Production during upwelling and non-upwelling periods in a Coastal Setting

Dataset	Version Date	Current State
Gridded in-situ oxygen profiles from glider deployments in the San Pedro Channel, CA in 2013 and 2014 Co-Principal Investigator	2019-07-03	Final no updates expected
Gridded in-situ profiles from glider deployments in the San Pedro Channel, CA in 2013 and 2014 Co-Principal Investigator	2018-12-19	Final no updates expected
17D and isotopic ratios from R/V Yellowfin cruises to the San Pedro Ocean Time-series (SPOT) station in 2013 and 2014 Co-Principal Investigator	2017-03-24	Final no updates expected
All measurements used in the gross oxygen production estimates; from samples collected on R/V Yellowfin cruises to the San Pedro Ocean Time-series (SPOT) station in 2013 and 2014 Co-Principal Investigator	2017-03-22	Final no updates expected
CTD sensor and nutrient measurements from R/V Yellowfin cruises to the San Pedro Ocean Time-series (SPOT) station in 2013 and 2014 Co-Principal Investigator	2017-03-08	Final no updates expected
All 234Th data pertaining to the upwelling velocity calculations from R/V Yellowfin cruises to the San Pedro Ocean Time-series (SPOT) in 2013 and 2014 Co-Principal Investigator	2017-03-08	Final no updates expected
All 7Be data pertaining to upwelling velocity calculations from R/V Yellowfin cruises to the San Pedro Ocean Time-series (SPOT) in 2013 and 2014 Co-Principal Investigator	2017-03-08	Final no updates expected
All 234Th measurements made during this study, collected on R/V Yellowfin cruises to the San Pedro Ocean Time-series (SPOT) in 2013 and 2014 Co-Principal Investigator	2017-03-08	Final no updates expected
Export fluxes of Th, POC, PON and bSi calcuated using sediment traps and thorium budget from samples collected on R/V Yellowfin cruises to the San Pedro Ocean Time-series (SPOT) in 2013 and 2014 Co-Principal Investigator	2017-03-08	Final no updates expected
All measurements used in the net oxygen production estimates from R/V Yellowfin cruises to the San Pedro Ocean Time-series (SPOT) in 2013 and 2014 Co-Principal Investigator	2017-03-08	Final no updates expected

Project: U.S. Arctic GEOTRACES Study (GN01)

Dataset	Version Date	Current State
Water column profiles of dissolved Actinium-227 (227Ac) from the U.S. GEOTRACES Arctic cruise (HLY1502; GN01) on USCGC Healy from August to October 2015 Principal Investigator	2020-10-02	Data not available

Project: Collaborative Research: Documenting N2 fixation in N deficient waters of the Eastern Tropical South Pacific

Dataset	Version Date	Current State
PNsink mass flux and d15N from floating sediment trap deployments collected on the R/V Atlantis (AT15-61) and R/V Melville (MV1104) in 2010-2011 (N2 fixation ETSP project) Co-Principal Investigator	2015-04-09	Final no updates expected

Project: U.S. JGOFS Equatorial Pacific

Dataset	Version Date	Current State
Porosity and pore water nutrient chemistries from sediment cores collected during R/V John V. Vickers PacFlux II cruise 2 from the Equatorial Pacific Co-Principal Investigator	2002-01-02	Final no updates expected
Porosity and pore water nutrient chemistries from sediment cores from R/V Thomas G. Thompson cruise TT013 in the Equatorial Pacific in 1992 during the U.S. JGOFS Equatorial Pacific (EqPac) project Co-Principal Investigator	2002-01-02	Final no updates expected

Status message

Database

Contribute Data

Douglas E. Hammond

Activities reported for Douglas E. Hammond: