Parameter: d18O

Short Description: oxygen 16 to oxygen 18 ratio
Short Name: d18O
Official Name: d18O
Units: various
No Data Value: nd

Description

d18O is the isotope ratio of 18O to 16O. delta180.


DatasetPI-Supplied DescriptionPI-Supplied Name
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 2017Oxygen 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 positionOxygen 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 positionStandard deviation of d18O when more than one measurement was taken d18O_stdev
Isotopes from B. gymnorhiza mangroves in Palau during 2013O rain water in Koror for closest three rain events avg_rain_d18O
Isotopes from B. gymnorhiza mangroves in Palau during 2013O isotopes of leaf water d18O_lw
Isotopes from B. gymnorhiza mangroves in Palau during 2013O isotopes of surface water d18O_surface_water
Isotopes from B. gymnorhiza mangroves in Palau during 2013O 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 2018Oxygen isotopic composition of nitrate+nitrite in a sample NO3_NO2_d18O
Water column inorganic nutrient concentration and nitrate+nitrite d15N and d18O measurements from R/V Roger Revelle cruise RR2201 in the Argo Basin in the Indian Ocean from February to March of 2022isotopic (d18O) composition of O in NO3 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 2018d18O 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 2017-08-2818O 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 1968-2012delta 18O d18O
Bubble flux measurements and concentrations at two sites on the Virginia Eastern Shore, July 2017ratio oxygen 16 to oxygen 18 corrected to PDB standard d18O
Bubble flux measurements and concentrations at two sites on the Virginia Eastern Shore, July 2017standard 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 hydrationdelta 18O, VSMOW d18O
New experimental constraints on the magnitude of kinetic C and O isotope fractionation for CO2 hydrationstandard 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 2018-05-10delta 18 O d18O
Geochemical data collected from Whillans Subglacial Lake sediment cores in West AntarcticaIsotope 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 2015delta 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 2015delta 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 2015delta 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 2015delta 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 2013Average 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 2013Standard 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 2013Average 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 2013Standard 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) projectOxygen 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