| Analyses of nitrate reference solutions in 18O-labeled water with the denitrifier method (Biological Nitrogen Isotope Fractionation project) | Reference materials were supplemented with 18O-labaled water. Delta 18OH2O values (‰ vs. VSMOW) were calculated from dilution
| delta_18OH2O |
| Analyses of nitrate reference solutions in 18O-labeled water with the denitrifier method (Biological Nitrogen Isotope Fractionation project) | O isotopic composition of nitrate measured with the denitrifier method using a Thermo Delta V GC-IRMS with modified Gas Bench II and a PAL autosampler
| delta_18ON2O |
| Analyses of nitrate reference solutions in 18O-labeled water with the denitrifier method (Biological Nitrogen Isotope Fractionation project) | Standard deviation of delta 18O replicates in each trial
| stdev_of_delta_18ON2O |
| Nitrate plus nitrite isotopic compositions from Leg 1 of the Antarctic Circumnavigation Expedition (ACE) research cruise onboard the R/V Akademik Treshnikov from December 2016 to January 2017 | Oxygen isotopic composition of nitrate+nitrite in a sample
| NO3_NO2_d18O_corrected |
| Particulate data collected near Friday Harbor, WA between 2020 and 2021 as part of a study of cold-water coral Balanophyllia elegans diet and trophic position | Oxygen isotopic ratio of nutrient measurements d18O
| d18O |
| Particulate data collected near Friday Harbor, WA between 2020 and 2021 as part of a study of cold-water coral Balanophyllia elegans diet and trophic position | Standard deviation of d18O when more than one measurement was taken
| d18O_stdev |
| Isotopes from B. gymnorhiza mangroves in Palau during 2013 | O rain water in Koror for closest three rain events
| avg_rain_d18O |
| Isotopes from B. gymnorhiza mangroves in Palau during 2013 | O isotopes of leaf water
| d18O_lw |
| Isotopes from B. gymnorhiza mangroves in Palau during 2013 | O isotopes of surface water
| d18O_surface_water |
| Isotopes from B. gymnorhiza mangroves in Palau during 2013 | O isotopes of xylem water
| d18O_xw |
| Nutrients, nitrate isotopes, and DON isotopes data from samples collected in the Gulf of Mexico on R/V Nancy Foster cruises NF1704 and NF1802 in May 2017 and May 2018 | Oxygen isotopic composition of nitrate+nitrite in a sample
| NO3_NO2_d18O |
| Natural abundance of 15N and 18O measured in samples collected over the continental shelf west of the Antarctic Peninsula on cruise LMG1801 from January to February 2018 | d18O value of the NO2 + NO3 in the sample as determined by the denitrifier method, units of parts per thousand (o/oo or per mil).
| d18O |
| Results from experiment examining 15N-labeled contaminants in commercial 15N2 gas: Detected 15N-labeled nitrate (NO3) in commercial 15N2 gas (15N2 Contamination project) | Apparent delta 18O; experimental samples.
| apparent_delta_18O |
| Results from experiment examining 15N-labeled contaminants in commercial 15N2 gas: Detected 15N-labeled nitrate (NO3) in commercial 15N2 gas (15N2 Contamination project) | delta 18O; controls and standards.
| delta_18O |
| Oxygen Isotope data from 37 R/V Albatross IV, R/V Endeavor, R/V Oceanus, and R/V Parizeau (Canadian) cruises in the Gulf of Maine and Georges Bank, the Gulf of St. Lawrence and Scotian Shelf from 1994-1999 (GB project) | isotope ratio H218O/H216O, presented in delta18O notation
| delta_O_18 |
| Results from experiment examining 15N-labeled contaminants in commercial 15N2 gas: 46-N2O contamination measured directly in commercial 15N2 gas (15N2 Contamination project) | delta 18O.
| delta_18O |
| Depth profiles of dissolved O2 saturation and isotopologues from the R/V Yellowfin and R/V Kilo Moana from 2016-09-14 to 2017-08-28 | 18O value of O2 relative to air-O2
| d18O |
| Dongsha Atoll Coral 45 Years Bimonthly Stable Isotope Data from cores collected on June 29, 2013 from 1968-2012 | delta 18O
| d18O |
| Bubble flux measurements and concentrations at two sites on the Virginia Eastern Shore, July 2017 | ratio oxygen 16 to oxygen 18 corrected to PDB standard
| d18O |
| Bubble flux measurements and concentrations at two sites on the Virginia Eastern Shore, July 2017 | standard deviation of delta 18O
| d18O_stdev |
| Nitrous oxide (N2O) concentrations and associated physicochemical parameters from R/V Atlantis cruise AT15-61 in Jan-Feb 2010 and R/V Melville cruise MV1104 in Mar-Apr 2011 in the Eastern Tropical South Pacific (ETSP) | First measurement of d18O in N2O in reference to VSMOW, expressed in permille notation
| d18O_1 |
| Nitrous oxide (N2O) concentrations and associated physicochemical parameters from R/V Atlantis cruise AT15-61 in Jan-Feb 2010 and R/V Melville cruise MV1104 in Mar-Apr 2011 in the Eastern Tropical South Pacific (ETSP) | Second measurement of d18O in N2O in reference to VSMOW, expressed in permille notation
| d18O_2 |
| Nitrate (NO3-) and Nitrite (NO2-) d15N and d18O from R/V Atlantis cruise AT15-61 in Jan-Feb 2010 and R/V Melville cruise MV1104 in Mar-Apr 2011 in the Eastern Tropical South Pacific (ETSP) | Delta 18O of nitrite; 1 standard deviation expressed in permille notation in reference to VSMOW (vienna standard mean ocean water)
| del18O_NO2 |
| Nitrate (NO3-) and Nitrite (NO2-) d15N and d18O from R/V Atlantis cruise AT15-61 in Jan-Feb 2010 and R/V Melville cruise MV1104 in Mar-Apr 2011 in the Eastern Tropical South Pacific (ETSP) | Delta 18O of nitrite; 1 standard deviation expressed in permille notation in reference to VSMOW (vienna standard mean ocean water)
| del18O_NO2_sd |
| Kinetics of δ18O and Δ47 equilibration in the dissolved carbonate system revealed by time-series quantitative inorganic carbonate precipitation experiments and numerical modeling. | δ18OBaCO3, stable oxygen isotope ration
| delta_O_18_BaCO3 |
| New experimental constraints on the magnitude of kinetic C and O isotope fractionation for CO2 hydration | delta 18O, VSMOW
| d18O |
| New experimental constraints on the magnitude of kinetic C and O isotope fractionation for CO2 hydration | standard deviation of d18O
| d18O_stdev |
| Temperature, salinity, water isotope, and inorganic nutrient profiles of sea ice core sections collected offshore near Utqiaġvik, Alaska, USA in May 2017 and 2018. | delta 18 O
| d18O |
| Brine samples from both sea ice and cryopeg near Utqiaġvik, Alaska, USA from 2017-05-08 to 2018-05-10 | delta 18 O
| d18O |
| Geochemical data collected from Whillans Subglacial Lake sediment cores in West Antarctica | Isotope ratio of 18O to 16O of water in Whillans Subglacial Lake sediment porewater
| d18O_H2O |
| Nitrate (NO3) and oxygen & deuterium isotopic composition from ice pond samples collected on the US GEOTRACES Arctic cruise (HLY1502) from August to October 2015 | delta 18O of water
| WATER_18_16_D_DELTA_PUMP |
| Nitrate (NO3), ammonium (NH4), and oxygen & deuterium isotopic composition from sea ice hole water sampling on the US GEOTRACES Arctic cruise (HLY1502) from August to October 2015 | delta 18O of water
| WATER_18_16_D_DELTA_PUMP |
| Nitrate (NO3), ammonium (NH4), and oxygen & deuterium isotopic composition from sea ice collected on the US GEOTRACES Arctic cruise (HLY1502) from August to October 2015 | delta 18O of water
| WATER_18_16_D_DELTA_ICORE |
| Nitrate (NO3), ammonium (NH4), and oxygen & deuterium isotopic composition from snow collected on the US GEOTRACES Arctic cruise (HLY1502) from August to October 2015 | delta 18O of water
| WATER_18_16_D_DELTA_SNOW |
| Nitrous oxide (N2O) isotopes and concentrations from the U.S. GEOTRACES EPZT cruise (GP16, TN303) on R/V Thomas G. Thompson in the tropical Pacific from October to December 2013 | Average d18O in N2O in reference to VSMOW, expressed in permille notation. (Code at the end of column name is GEOTRACES DOoR identifier.)
| N2O_18_16_D_DELTA_BOTTLE_xkal8d |
| Nitrous oxide (N2O) isotopes and concentrations from the U.S. GEOTRACES EPZT cruise (GP16, TN303) on R/V Thomas G. Thompson in the tropical Pacific from October to December 2013 | Standard deviation d18O in N2O in reference to VSMOW, expressed in permille notation. (Code at the end of column name is GEOTRACES DOoR identifier.)
| SD1_N2O_18_16_D_DELTA_BOTTLE_xkal8d |
| Nitrite (NO2-) isotopes and concentrations from the U.S. GEOTRACES EPZT cruise (GP16, TN303) on R/V Thomas G. Thompson in the tropical Pacific from October to December 2013 | Average d18O of nitrite measurements in reference to atmospheric nitrogen gas, expressed in permille notation. (Code at the end of column name is GEOTRACES DOoR identifier.)
| NITRITE_18_16_D_DELTA_BOTTLE_iqunnm |
| Nitrite (NO2-) isotopes and concentrations from the U.S. GEOTRACES EPZT cruise (GP16, TN303) on R/V Thomas G. Thompson in the tropical Pacific from October to December 2013 | Standard deviation d18O of nitrite measurements in reference to atmospheric nitrogen gas, expressed in permille notation. (Code at the end of column name is GEOTRACES DOoR identifier.)
| SD1_NITRITE_18_16_D_DELTA_BOTTLE_iqunnm |
| Depth profiles of seawater d18O and dD from R/V Knorr KN199-04 in the subtropical N. Atlantic Ocean from Oct. 2010 (U.S. GEOTRACES NAT project, GEOTRACES: Intercal Phosphate Oxygen project) | Isotope ratio 18O/16O; 1st analysis
| d18O_1 |
| Depth profiles of seawater d18O and dD from R/V Knorr KN199-04 in the subtropical N. Atlantic Ocean from Oct. 2010 (U.S. GEOTRACES NAT project, GEOTRACES: Intercal Phosphate Oxygen project) | Isotope ratio 18O/16O; 2nd analysis
| d18O_2 |
| Depth profiles of seawater d18O and dD from R/V Knorr KN199-04 in the subtropical N. Atlantic Ocean from Oct. 2010 (U.S. GEOTRACES NAT project, GEOTRACES: Intercal Phosphate Oxygen project) | Average of d18O analyses
| d18O_mean |
| Ice core physical properties from ARSV Laurence M. Gould LMG0106 in the Southern Ocean from July 2001 (SOGLOBEC project) | delta-18O; ratio of stable isotopes (oxygen-18:oxygen-16)
| d180 |
| Inorganic sediment chemistry from piston cores from R/V Thomas G. Thompson cruise TT013 in the Equatorial Pacific in 1992 during the U.S. JGOFS Equatorial Pacific (EqPac) project | Oxygen Isotope
| d18O |
| Inorganic Sediment Chemistry data from R/V Thomas G. Thompson U.S. JGOFS cruise in the Equatorial Pacific (EqPac project) | Oxygen Isotope
| d18O |
| Simulation of the volume-dependent changes in ẟ15N and ẟ18O for IAEA-NO3 and USGS-34 reference materials (Biological Nitrogen Isotope Fractionation project) | IAEA-NO3 has a delta_18O of 0‰ vs. IAEA-NO3, and that expected for USGS-34 is -52.2‰ vs. IAEA-NO3.
| Expected_delta_18O_pcnt |
| Simulation of the volume-dependent changes in ẟ15N and ẟ18O for IAEA-NO3 and USGS-34 reference materials (Biological Nitrogen Isotope Fractionation project) | Observed mean delta_18O of DIW and seawater sample in the 3 trials in Datasheet "Incidence of volume effect"
| Observed_delta_18O_pcnt |
| Simulation of the volume-dependent changes in ẟ15N and ẟ18O for IAEA-NO3 and USGS-34 reference materials (Biological Nitrogen Isotope Fractionation project) | _18O simulation accounting for a bacterial blank of 0.06 nmol N, atmospheric N2O of 0.013 nmol N mL-1, nitrate contaminant in the solutions of 0.016 N nmol mL-1, and O atom exchange fraction of 3%
| plus_blks_and_x_delta_18O_pcnt |
| Simulation of the volume-dependent changes in ẟ15N and ẟ18O for IAEA-NO3 and USGS-34 reference materials (Biological Nitrogen Isotope Fractionation project) | _18O simulation accounting for blanks, O atom exchange, and the influence of incomplete sample sparging on the _18O values
| plus_sparge_delta_18O_pcnt |
| Simulation of the volume-dependent changes in ẟ15N and ẟ18O for IAEA-NO3 and USGS-34 reference materials (Biological Nitrogen Isotope Fractionation project) | The standard deviation of trial means of delta_18O
| stdev_of_observed_delta_18O_pcnt |
| Isotopes d2H and d18O in Alaskan ground, lake, and river water from the area of Toolik Lake, Alaska from 2012-2014 (Groundwater Discharge Methane project) | Isotopic ratio of 18O:16O in water
| water_d18O |
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