| Radium isotope measurements from CTD and underway water samples from the R/V Endeavor cruise EN614 from 2018-05-06 to 2018-05-29 | Radium isotopes (224Ra and 223Ra) were analyzed with a Radium Delayed Coincidence Counter (Moore and Arnold, 1996).
| Radium Delayed Coincidence Counter |
| Radium isotope (223Ra, 224Ra, and 226Ra) measurements from CTD and underway water samples collected on R/V Endeavor cruise EN640 from June-July 2019 | Radium isotopes (224Ra and 223Ra) were analyzed with a Radium Delayed Coincidence Counter (Moore and Arnold, 1996). This system was calibrated to standard MnO2 prepared from NIST-traceable solutions of Th-232 and Ac-227 (with daughters in equilibrium).
| Radium Delayed Coincidence Counter |
| Measurements of Radium isotopes (Ra-224 and Ra-223) collected aboard the R/V Falkor cruise FK190211 in the Guaymas Basin of the Gulf of California from February to March 2019. | Radium Delayed Coincidence Counter (Moore and Arnold, 1996). This system was calibrated to standard MnO2 prepared from NIST-traceable solutions of Th-232 and Ac-227 (with daughters in equilibrium).
| Radium Delayed Coincidence Counter (Moore and Arnold, 1996) |
| Measurements of global dissolved submarine groundwater discharge (SGD) 226-Radium and 228-Radium | RaDeCCs made by Scientific Computer Instruments
| RaDeCC |
| 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 | RaDeCC manufactured by Scientific Computing, Inc (Columbia, SC)
| RaDeCC |
| Radium and thorium isotopes measured in the Western Arctic as part of the 2015 US GEOTRACES Arctic Cruise on the USCGC Healy (HLY1502) from August to October 2015 | Samples were analyzed using Radium Delayed Coincidence (RaDeCC) counters and high-purity, well-type germanium detectors.
| Radium Delayed Coincidence Counter |
| Activities of size-fractionated particulate thorium isotopes and total Thorium-234 from the U.S. GEOTRACES Arctic cruise, HLY1502, on USCGC Healy from August to October 2015 | | Radium Delayed Coincidence Counter (RaDeCC) |
| Water column dissolved radium-226 and radium-228 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 | Samples were analyzed using Radium Delayed Coincidence (RaDeCC) counters and high-purity, well-type germanium detectors.
| Radium Delayed Coincidence (RaDeCC) counter |
| Water column dissolved radium-226 and radium-228 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 | Samples were analyzed using Radium Delayed Coincidence (RaDeCC) counters and high-purity, well-type germanium detectors.
| Radium Delayed Coincidence (RaDeCC) counter |
| 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 | | RaDeCC system made by Scientific Computing, Inc. |
| 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 | | RaDeCC system made by Scientific Computing, Inc. |
| Radium isotopes collected on R/V Thomas G. Thompson cruise TN303 in the Eastern Tropical Pacific in 2013 (U.S. GEOTRACES EPZT project) | | Alpha delayed coincidence counter (RaDeCC) |
| Radium and Thorium isotopes sampled by in situ pump on R/V Knorr cruises KN199-04 and KN204-01 in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) | Samples were analyzed three times using an Alpha delayed coincidence counter (RaDeCC) for 223Ra, 224Ra, 228Th, and 227Ac.
| Radium Delayed Coincidence Counter |
| Dissolved radium isotope activity around Guaymas Basin from samples collected by CTD and HOV Alvin during R/V Atlantis cruise AT42-05 in November 2018 | | |
| Sedimentary radium isotope activity around Guaymas Basin from samples collected by HOV Alvin during R/V Atlantis cruise AT37-06 in December 2016 | Filters were dried in a drying oven (at 60 °C) for 12 hours, then placed is a filter holder within a cartridge and counted on a Radium Delayed Coincidence Counter.
| |
| Dissolved radium isotope activity around Guaymas Basin from samples collected by CTD and HOV Alvin during R/V Atlantis cruise AT37-06 in December 2016 | | |
| Radiochemistry data for fluids sampled from the Lost City Hydrothermal Field at the Atlantis Massif in 2018 | Moore and Arnold, 1996
| Radium Delayed Coincidence Counter System (RaDeCC system) |
| Desorbed Radium from Kolyma (Russia), Ellice (Canada), and Kodiak Island (USA) Rivers | RaDeCCs made by Scientific Computer Instruments
| RaDeCC |
| Dissolved Radium from Kolyma (Russia), Ellice (Canada), and Kodiak Island (USA) Rivers | RaDeCCs made by Scientific Computer Instruments
| RaDeCC |
| Radium isotope measurements from bottom waters in the South Atlantic Bight from 2015-2020 (SAB BMA project) | The Mn-fiber was returned to the lab, where short-lived radium isotopes (223Ra, half-life = 11.4 days, and 224Ra, half-life = 3.66 days) were measured using a delayed-coincidence counting system [Moore and Arnold, 1996].
| RaDeCC System |
| Radium in natural waters of Alaska | Discrete seawater, groundwater, lake, and river water samples were collected from Kasitsna Bay and Toolik Lake in August 2011 and July 2012 and the Beaufort Sea August 2012. Groundwater samples were collected in all locations from freshly dug pits or temporary PVC well points of variable depth depending on the depth of the water table. All water samples were collected by submersible pump. Sample water was passed through a plastic column containing manganese dioxide impregnated acrylic fiber at a rate of | Radium Delayed Coincidence Counter (RaDeCC) |
| Radium and thorium radionuclide measurements in coastal marsh sediments from sediment cores in South Carolina collected from 2017 to 2019 | Radium Delayed Coincidence Counter, Manufactured by Scientific Computer Instruments. Used to measure 220Rn and 219Rn which allows for the quantification of 224Ra and 228Th.
| |
| Salinity, radium/thorium radionuclide, and nitrogen oxide concentration measurements from surface and porewater samples collected in coastal South Carolina from 2017 to 2019 | Radium Delayed Coincidence Counter, Manufactured by Scientific Computer Instruments. Used to measure 220Rn and 219Rn which allows for the quantification of 224Ra, 223Ra, and 228Th.
| Radium Delayed Coincidence Counter |
©2020 Biological and Chemical Oceanography Data Management Office.