Martin Q. Fleisher

Affiliation: Lamont-Doherty Earth Observatory (LDEO)

Address: []

Orcid: 0000-0002-1141-8723

Project: GEOTRACES InterCalibration (1 datasets)

Dataset	Latest Version Date	Current State
Seawater dissolved 232Thorium, 230Thorium and 231Protactinium from R/V Knorr KN193-06 and KN195-08 in the eastern N. Pacific and Sargasso Sea from 2008-2009 (GEOTRACES IC project) Role: Co-Principal Investigator	2012-12-31	Final no updates expected

Project: U.S. GEOTRACES North Atlantic Transect (GA03) (4 datasets)

Dataset	Latest Version Date	Current State
Depth profiles of dissolved, small and large particulate 232Th, 230Th, and 231Pa from R/V Knorr KN199-04, KN204-01, subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) Role: Co-Principal Investigator	2016-05-16	Final no updates expected
Depth profiles of suspended dissolved and particulate 232Th, 230Th, and 231Pa from R/V Knorr KN199-04, KN204-01, subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) Role: Co-Principal Investigator	2014-08-08	Final no updates expected
Particle beam attenuation coefficient (Cp) data from GEOTRACES carousel from R/V Knorr KN199-04, KN204-01 in the subtropical N. Atlantic Ocean, 2010-2011 (U.S. GEOTRACES NAT project) Role: Co-Principal Investigator	2013-11-05	Final no updates expected
Particle beam attenuation coefficient (Cp) data from ODF (Ocean Data Facility) rosette, R/V Knorr KN199-04, KN204-01 in the Subtropical northern Atlantic Ocean, 2010-2011 (U.S. GEOTRACES NAT project) Role: Co-Principal Investigator	2013-11-05	Final no updates expected

Project: Boundary Sources and Sinks of 230Th, 232Th and 231Pa in the NW Pacific (1 datasets)

Dataset	Latest Version Date	Current State
Depth profiles of seawater dissolved 232Th, 230Th, and 231Pa, NW Pacific from R/V Sonne SO202 in the North Pacific and the Bering Sea from July 2009 (Sources-Sinks Th-Pa project) Role: Co-Principal Investigator	2013-01-16	Final no updates expected

Project: U.S. GEOTRACES East Pacific Zonal Transect (GP16) (2 datasets)

Dataset	Latest Version Date	Current State
Depth profiles of seawater dissolved 232Th, 230Th, and 231Pa during the GEOTRACES Equatorial Pacific Zonal Transect on cruise TN303 during 2013 Role: Co-Principal Investigator	2017-01-31	Final no updates expected
Small and large particulate Th and Pa samples from different depth profiles collected on R/V Thomas G. Thompson in the Eastern Tropical Pacific during 2013 (EPZT Th Pa project) Role: Co-Principal Investigator	2017-01-24	Final no updates expected

Project: U.S. Arctic GEOTRACES Study (GN01) (2 datasets)

Dataset	Latest Version Date	Current State
Concentrations of dissolved thorium and protactinium isotopes (Th-232, Th-230, Pa-231) in seawater, sea ice, and melt ponds collected during the U.S. GEOTRACES Arctic cruise (HLY1502, GN01) on USCGC Healy from August to October 2015 Role: Co-Principal Investigator	2021-08-25	Final no updates expected
Concentrations of size-fractionated particulate thorium and protactinium isotopes (Th-232, Th-230, Pa-231) in seawater collected during the U.S. GEOTRACES Arctic cruise (HLY1502, GN01) on USCGC Healy from August to October 2015 Role: Co-Principal Investigator	2021-08-25	Final no updates expected

Project: U.S. GEOTRACES Pacific Section: Analysis of 230Th, 232Th and 231Pa (2 datasets)

Dataset	Latest Version Date	Current State
Depth profiles of seawater dissolved 232Th, 230Th, and 231Pa during the GEOTRACES Equatorial Pacific Zonal Transect on cruise TN303 during 2013 Role: Co-Principal Investigator	2017-01-31	Final no updates expected
Small and large particulate Th and Pa samples from different depth profiles collected on R/V Thomas G. Thompson in the Eastern Tropical Pacific during 2013 (EPZT Th Pa project) Role: Co-Principal Investigator	2017-01-24	Final no updates expected

Project: US GEOTRACES Pacific Meridional Transect (GP15) (4 datasets)

Dataset	Latest Version Date	Current State
Dissolved thorium and protactinium isotopes (232Th, 230Th, 231Pa) in seawater 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 Role: Co-Principal Investigator	2024-03-15	Final no updates expected
Dissolved thorium and protactinium isotopes (232Th, 230Th, 231Pa) in seawater 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 Oct-Nov 2018 Role: Co-Principal Investigator	2024-08-01	Final no updates expected
Size-fractionated particulate thorium and protactinium isotopes in seawater 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 Role: Co-Principal Investigator	2025-02-24	Data not available
GP15 Particulate Thorium and Protactinium Leg 2 Role: Co-Principal Investigator		Preliminary and in progress

Project: Supply and removal of trace elements in the subtropical South Pacific (GPpr09) (2 datasets)

Dataset	Latest Version Date	Current State
Depth profiles of seawater dissolved 232Th, 230Th, and 231Pa from R/V Sonne cruise SO245 (UltraPac, GPpr09) during Dec 2015 to Jan 2016 Role: Co-Principal Investigator	2020-06-03	Final no updates expected
Depth profiles of seawater particulate 232Th, 230Th, and 231Pa from R/V Sonne cruise SO245 (UltraPac, GPpr09) during Dec 2015 to Jan 2016 Role: Co-Principal Investigator	2020-06-03	Final no updates expected

Project: Water Mass Structure and Bottom Water Formation in the Ice-age Southern Ocean (GSc02) (1 datasets)

Dataset	Latest Version Date	Current State
Depth profiles of seawater dissolved 232Th, 230Th, and 231Pa from RVIB Nathaniel B. Palmer cruise NBP1702 from January to March 2017 Role: Co-Principal Investigator	2021-08-03	Final no updates expected

Project: Collaborative Research: U.S. GEOTRACES Pacific Meridional Transect: Thorium-232, Thorium-230 and Protactinium-231 as tracers of trace element supply and removal (4 datasets)

Dataset	Latest Version Date	Current State
Dissolved thorium and protactinium isotopes (232Th, 230Th, 231Pa) in seawater 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 Role: Co-Principal Investigator	2024-03-15	Final no updates expected
Dissolved thorium and protactinium isotopes (232Th, 230Th, 231Pa) in seawater 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 Oct-Nov 2018 Role: Co-Principal Investigator	2024-08-01	Final no updates expected
Size-fractionated particulate thorium and protactinium isotopes in seawater 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 Role: Co-Principal Investigator	2025-02-24	Data not available
GP15 Particulate Thorium and Protactinium Leg 2 Role: Co-Principal Investigator		Preliminary and in progress

Project: Collaborative Research: U.S. GEOTRACES Arctic Section: Thorium-230, Thorium-232, and Protactinium-231 tracers of trace element supply and removal. (4 datasets)

Dataset	Latest Version Date	Current State
Concentrations of dissolved thorium and protactinium isotopes (Th-232, Th-230, Pa-231) in seawater, sea ice, and melt ponds collected during the U.S. GEOTRACES Arctic cruise (HLY1502, GN01) on USCGC Healy from August to October 2015 Role: Co-Principal Investigator	2021-08-25	Final no updates expected
Concentrations of size-fractionated particulate thorium and protactinium isotopes (Th-232, Th-230, Pa-231) in seawater collected during the U.S. GEOTRACES Arctic cruise (HLY1502, GN01) on USCGC Healy from August to October 2015 Role: Co-Principal Investigator	2021-08-25	Final no updates expected
Concentrations of dissolved thorium and protactinium isotopes (232Th, 230Th, 231Pa) in seawater collected during the Indian GEOTRACES Transect (SK312; GI02) in April-May 2014 Role: Co-Principal Investigator	2024-07-02	Final no updates expected
Concentrations of dissolved thorium and protactinium isotopes (232Th, 230Th, 231Pa) in seawater collected during the Indian GEOTRACES Transect (SK324; GI05) in September-October 2015 Role: Co-Principal Investigator	2024-06-26	Final no updates expected

Project: Collaborative Research: US GEOTRACES Pacific Meridional Transect: Sources and Sinks of Neodymium Isotopes and Rare Earth Elements (2 datasets)

Dataset	Latest Version Date	Current State
Concentrations of dissolved thorium and protactinium isotopes (232Th, 230Th, 231Pa) in seawater collected during the Indian GEOTRACES Transect (SK312; GI02) in April-May 2014 Role: Co-Principal Investigator	2024-07-02	Final no updates expected
Concentrations of dissolved thorium and protactinium isotopes (232Th, 230Th, 231Pa) in seawater collected during the Indian GEOTRACES Transect (SK324; GI05) in September-October 2015 Role: Co-Principal Investigator	2024-06-26	Final no updates expected