©2020 Biological and Chemical Oceanography Data Management Office.Funded by the U.S. National Science Foundation
Instruments measuring the relative levels of electromagnetic radiation of different wavelengths in the gamma-ray waveband.
| Dataset Name | PI-Supplied Description | PI-Supplied Name |
|---|---|---|
| Bulk sediment physical and geochemical properties for cores collected post-hurricane Harvey at the Aransas and Anahuac National Wildlife Refuges, Texas on January 2018 | Used to measure 210Pb, 137Cs, and 226Ra (as 214Pb and 214Bi) . | Canberra germanium detectors |
| 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 | Ortec low background gamma detector | |
| 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 | Ortec low background gamma detector | |
| 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 | Ortec low background gamma detector | |
| Water column Beryllium-7 from samples collected on the MOSAiC expedition, PS122, on R/V Polarstern in the Central Arctic Ocean during 2019-2020 | ⁷Be was analyzed with high purity germanium (HPGe) gamma detectors. | high purity germanium (HPGe) gamma detector |
| Coccolithophore-associated organic biopolymers for fractionating particle-reactive radionuclides (234Th, 233Pa, 210Pb, 210Po, and 7Be) | Canberra ultrahigh purity germanium well gamma detector Model GCW3024 | Canberra ultrahigh purity germanium well gamma detector |
| Mud Patch sediment age dating with Lead-210 and Cesium-137 from R/V Endeavor EN524 in the continental shelf off New England; 40.43 N 70.5 W from May 2013 (OA, Hypoxia and Warming project) | Samples were analyzed on a Canberra model GL2020RS low energy Germanium (LeGe) planar detector coupled with low background cryostats in low background shields, in Jeff Donnelly’s lab at WHOI using standard procedures | Canberra model GL2020RS low energy Germanium (LeGe) planar detector |
| Partitioning of iron and plutonium in exopolymeric substances and intracellular biopolymers: a comparison study between the coccolithophore Emiliania huxleyi and the diatom Skeletonema costatum | Canberra ultrahigh purity germanium well gamma detector Model GCW3024 | Canberra ultrahigh purity germanium well gamma detector Model GCW3024 |
| Measurements of global dissolved submarine groundwater discharge (SGD) 226-Radium and 228-Radium | Gamma detectors made by Canberra or Ortec. | well-type gamma spectrometer |
| Aerosol and seawater beryllium-7 concentrations 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 | For 7Be, three of the 47mm aerosol samples were stacked in a plastic Petri dish and counted by gamma spectroscopy | gamma spectroscopy |
| Aerosol and seawater beryllium-7 concentrations 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 | germanium gamma detector | |
| Partition coefficient of 234Th, 233Pa, 210Pb, 210Po, and 7Be | Activity concentrations of 234Th, 233Pa, 210Pb, 210Po, and 7Be were measured by gamma counting the 63.5, 312, 46.5, and 477.6 keV lines, respectively, on a Canberra ultra-highpurity germanium well-type detector. | Canberra ultra-highpurity germanium well-type detector |
| Radiochemistry data for fluids sampled from the Lost City Hydrothermal Field at the Atlantis Massif in 2018 | Gamma Spectrometer, ORTEC | |
| Radiochemistry data for rocks and deposits from the Lost City Hydrothermal Field at the Atlantis Massif from 2018-2020 | Gamma Spectrometer, ORTEC | |
| Desorbed Radium from Kolyma (Russia), Ellice (Canada), and Kodiak Island (USA) Rivers | Gamma detectors made by Canberra or Ortec. | well-type gamma spectrometer |
| Dissolved Radium from Kolyma (Russia), Ellice (Canada), and Kodiak Island (USA) Rivers | Gamma detectors made by Canberra or Ortec. | well-type gamma spectrometer |
| Arctic aerosol Be7 concentrations from the MOSAIC expedition on the R/V Polarstern in the Central Arctic Ocean from December 2019 to June 2020 | High purity germanium (HPGe) gamma detector | |
| Ice core Be7 concentrations from the MOSAIC expedition on the R/V Polarstern in the Central Arctic Ocean from October 2019 to May 2020 | high purity germanium (HPGe) gamma detectors | |
| Snow and frost flower Be7 concentrations from the MOSAIC expedition on the R/V Polarstern in the Central Arctic Ocean from October 2019 to May 2020 | high purity germanium (HPGe) gamma detectors | |
| Percent activity of organic fractions from diatoms that bind with radionuclide | Activity concentrations of 234Th, 233Pa, 210Pb, and 7Be were measured by counting the gamma decay energies at 63.5 keV, 312 keV, 46.5 keV, and 477.6 keV, respectively, on a Canberra ultrahigh purity germanium well detector. | Canberra ultrahigh purity germanium well detector |
| Percent amount of organic fractions from diatoms that bind with radionuclides | Activity concentrations of 234Th, 233Pa, 210Pb, and 7Be were measured by counting the gamma decay energies at 63.5 keV, 312 keV, 46.5 keV, and 477.6 keV, respectively, on a Canberra ultrahigh purity germanium well detector. | Canberra ultrahigh purity germanium well detector |
| Experimental observations of radionuclide uptake by colloidal and particulate humic acids obtained from 14 soils collected worldwide | Canberra ultrahigh purity germanium well gamma detector Model GCW3024 | Canberra ultrahigh purity germanium well gamma detector |
| Radium isotope measurements from bottom waters in the South Atlantic Bight from 2015-2020 (SAB BMA project) | After the short-lived measurements were complete, Ra and Mn were stripped from the Mn-fiber and radium was coprecipitated with BaSO4 and transferred to a small tube. 226Ra and 228Ra were measured by gamma spectrometry after 222Rn had equilibrated with 226Ra [Moore et al., 1985]. | Gamma Spectrometer, ORTEC |
| Radium isotope results from groundwater wells around Little Lagoon, Alabama from 2010-2012 (LittleLagoonGroundwater project) | with relative efficiency of 20% (Dulaiova and Burnet, 2004) - see methodology paper by Su et al. Ra determined via Lucas cell counting and assessed by gamma spectrometry (R=0.97, n=112). | Ortec IG detector |
| Radium isotope results from surface waters of several sites around Little Lagoon, Alabama from 2010-2012 (LittleLagoonGroundwater project) | with relative efficiency of 20% (Dulaiova and Burnet, 2004) - see methodology paper by Su et al. Ra determined via Lucas cell counting and assessed by gamma spectrometry (R=0.97, n=112). | Ortec IG detector |
| Po, Pb and Be partition coefficients on nanoparticles from laboratory experiments | Canberra ultra-high purity germanium well detector. | Gamma-spectrometry |
| Salinity, radium/thorium radionuclide, and nitrogen oxide concentration measurements from surface and porewater samples collected in coastal South Carolina from 2017 to 2019 | Well Germanium Crystal Gamma Ray Detector (WeGe), Manufactured by Canberra, used to measure 226Ra and 228Ra. | Well Germanium Crystal Gamma Ray Detector (WeGe) |
| Experiments evaluating protein size distribution pattern in EPS Si+ and EPS Si2 using sodium dodecyl sulfate–polyacrylamide gel electrophoresis | Activity concentrations of 234Th, 233Pa, 210Pb, 210Po, and 7Be were measured by gamma counting the 63.5, 312, 46.5, and 477.6 keV lines, respectively, on a Canberra ultra-highpurity germanium well-type detector. | Canberra ultra-highpurity germanium well-type detector |
| Grain size and radiometric data from multi-core sediments collected Fall 2017 from the R/V Acadiana in the northwestern Gulf of Mexico to assess Hurricane Harvey impacts | The CANBERRA High-Purity Germanium Well Detector provides maximum efficiency for small samples and allows spectroscopy from 20keV up to 10MeV. (More details in manual, http://www.gammadata.se/assets/Uploads/Germanium-Well-SS-C49321.pdf) | Canberra Germanium Well Detectors GCW3523 and GCW4023 |
| Dissolved radium from STING I Cruise AE2305 on R/V Atlantic Explorer and STING II Cruise EN704 on R/V Endeavor and U.S. Geological Survey small boat surveys in the Gulf of Mexico from Feb to Jul 2023 | Long-lived Ra isotopes measured via gamma spectroscopy in a Ge well-type detector for 226Ra (352 keV photopeak) and 228Ra (average of 338 and 911 keV photopeak’s), with efficiencies calibrated using standards prepared in the same fashion as the seawater samples (Charette et al., 2001). | well-type gamma spectrometer: Gamma detector made by Canberra or Ortec |
| Table 1: Pb-210, Bi-210, and Po-210 activity measurements in rain, lake water, and dreissenid (Quagga) mussels collected in the Milwaukee Inner Harbor on Lake Michigan, Nov. 2018 | low background gas-flow proportional detector with anticoincidence circuitry (G542 System, Gamma Products) | |
| Table 3: 210Pb, 210Bi, and 210Po activities in quagga mussels (Dreissena rostriformis bugensis) from Lake Michigan in 2018, from Waples (2020) Limnol. Oceanogr. Methods. | low background gas-flow proportional detector with anticoincidence circuitry (G542 System, Gamma Products) |
©2020 Biological and Chemical Oceanography Data Management Office.