Parameter: oxygen 16 to oxygen 18 ratio

Short Description:

oxygen 16 to oxygen 18 ratio

Short Name:

delta18O

Official Name:

delta18O

Units:

various

Graphable:

Yes

No Data Value:

Description

d18O is the isotope ratio of 18O to 16O

Datasets associated with this parameter

Dataset Name	Brief Description	Project	PI-Supplied Parameter Name
18O-labeled water	IAEA-NO3 and USGS-34 reference solutions analyzed for N and 0 isotope ratios	Biological Nitrogen Isotope Fractionation	stdev_of_delta_18ON2O, delta_18OH2O, delta_18ON2O
ACE-Leg 1 NO3 Isotopes	ACE-Leg 1 NO3 Isotopes	Nitrate Assimilation Phytoplankton	NO3_NO2_d18O_corrected
B. gymnorhiza isotopes	Isotopes from B. gymnorhiza mangroves in Palau in 2013.	PaPaPro	d18O_xw, d18O_lw, avg_rain_d18O, d18O_surface_water
BLOOFINZ-GoM nutrients and isotopes	BLOOFINZ-GoM Nutrients, Nitrate isotopes, DON isotopes	BLOOFINZ-IO	NO3_NO2_d18O
d15NOx Natural Abundance	Natural abundance of 15N and 18O from LMG1801	Oxidation of Urea N	d18O
delta 15N NO3	Detected 15N-labeled nitrate (NO3) in commercial 15N2 gas.	15N2 Contamination	apparent_delta_18O, delta_18O
delta_O_18	Oxygen Isotope data, GLOBEC and Canadian Cruises, 1994-1998.	GB	delta_O_18
direct N2O	46-N2O contamination measured directly in commercial 15N2 gas.	15N2 Contamination	delta_18O
dissolved O2	Depth profiles of dissolved O2 saturation and isotopologues	CDISK_4, O2 isotopologues in the N. Pacific	d18O
Dongsha Stable Isotope	Dongsha Atoll Coral 45 Years Bimonthly Stable Isotope Data	Coral climate effects	d18O
Ebullition on VA Eastern Shore	Bubble flux VA	Seagrass Blue Carbon	d18O, d18O_stdev
ETSP N2O	ETSP N2O	Microbial Nitrification	d18O_1, d18O_2
ETSP NO3 and NO2 isotopes	ETSP NO3 and NO2 isotopes	Microbial Nitrification	del18O_NO2, del18O_NO2_sd
Experimental data and model code for d18O and d47 equilibration kinetics	inorganic carbonate precipitation experiments and numerical modeling	CO2 Hydration Mechanism and KIEs	delta_O_18_BaCO3
Experimental data on kinetic C and O isotope fractionation of CO2 hydration	Experimental data on kinetic C and O isotope fractionation of CO2 hydration	CO2 Hydration Mechanism and KIEs	d18O, d18O_stdev
Geneflow Profile	Temperature, salinity, water isotope, and inorganic nutrient profiles of sea ice core sections collected offshore near Utqiaġvik, Alaska, USA in May 2017 and 2018.	Arctic Subzero Brines	d18O
Geneflow Samples	Brine samples were collected from both sea ice and cryopeg near Utqiaġvik, Alaska, USA.	Arctic Subzero Brines	d18O
Geochemistry		SLW C Cycling	d18O_H2O
GN01 Ice Pond NO3 H2O	Nitrate (NO3) and oxygen & deuterium isotopic composition from ice pond samples collected on the US GEOTRACES Arctic cruise, HLY1502	U.S. GEOTRACES Arctic, US GEOTRACES Arctic Nitrogen Flux	WATER_18_16_D_DELTA_PUMP
GN01 Sea Ice Hole NO3 NH4 H2O	Nitrate (NO3), ammonium (NH4), and oxygen & deuterium isotopic composition from sea ice hole water sampling on the US GEOTRACES Arctic cruise, HLY1502	U.S. GEOTRACES Arctic, US GEOTRACES Arctic Nitrogen Flux	WATER_18_16_D_DELTA_PUMP
GN01 Sea Ice NO3 NH4 H2O	Nitrate (NO3), ammonium (NH4), and oxygen & deuterium isotopic composition from sea ice collected on the US GEOTRACES Arctic cruise, HLY1502	US GEOTRACES Arctic Nitrogen Flux, U.S. GEOTRACES Arctic	WATER_18_16_D_DELTA_ICORE
GN01 Snow NO3 NH4 H2O	Nitrate (NO3), ammonium (NH4), and oxygen & deuterium isotopic composition from snow collected on the US GEOTRACES Arctic cruise, HLY1502	U.S. GEOTRACES Arctic, US GEOTRACES Arctic Nitrogen Flux	WATER_18_16_D_DELTA_SNOW
GT10 - delta-O18 and Deuterium	Depth profiles of seawater d18O and dD from 8 stations of the KN199-04 cruise.	GEOTRACES: Intercal Phosphate Oxygen, U.S. GEOTRACES NAT	d18O_2, d18O_mean, d18O_1
ice_properties	ice core physical properties	SOGLOBEC	d180
Inorganic Sediment Chemistry	Inorganic Sediment Chemistry from USJGOFS EqPac TT013 piston cores	EqPac	d18O
Inorganic Sediment Chemistry - PC72	Inorganic Sediment Chemistry from USJGOFS EqPac TT013 PC72	EqPac	d18O
Isotope ratio simulation	Simulation of the volume-dependent changes in ẟ15N and ẟ18O for IAEA-NO3 and USGS-34 reference materials	Biological Nitrogen Isotope Fractionation	Observed_delta_18O_pcnt, stdev_of_observed_delta_18O_pcnt, Expected_delta_18O_pcnt, plus_blks_and_x_delta_18O_pcnt, plus_sparge_delta_18O_pcnt
Isotopes d2H and d18O in natural waters of Alaska	Isotopes d2H and d18O in Alaskan ground, lake, and river water	Groundwater Discharge Methane	water_d18O
Keratoisis Delta11B Delta13C and Delta18O	Keratoisis δ11B, δ13C and δ18O	Bamboo Coral Boron Isotopes	Delta18O
N2O Natural Abundance Isotopomers	N2O Natural Abundance Isotopomers in ETNP	N2O in ETNP	d18O_NO2_rep1, d18O_NO2_rep2, d18O_N2O_rep1, d18O_N2O_rep2
O2/Ar and triple oxygen isotopes discrete samples	Dissolved gas O2/Ar and triple oxygen isotope discrete samples	NPac Cont Ship	del18O
Permafrost Borehole Geochemistry in the Barrow Permafrost Tunnel	Permafrost Borehole Geochemistry in the Barrow Permafrost Tunnel	Arctic Subzero Brines	d18O, d18O_std_dev
Permafrost Brine Geochemistry in the Barrow Permafrost Tunnel	Permafrost Borehole Geochemistry in the Barrow Permafrost Tunnel	Arctic Subzero Brines	d18O
Scale contraction simulation	Simulation of δ15N and δ18O scale contraction, given the observation of the fraction of O atom exchange with water and blanks.	Biological Nitrogen Isotope Fractionation	Observed_delta_18O_scale_contraction_pcnt, stdev_of_observed_delta_18O_scale_contraction, Observed_delta_18O_delta_15N_scale_contraction_pcnt, Model_1_delta_18O_scale_contraction_pcnt, Model_2_delta_18O_scale_contraction_pcnt
Stable C and O isotopes for Guaymas Basin and Sonora Margin sediments	d13C and d18O isotopic data for carbonate nodules and sedimentary carbonates in Guaymas Basin and Sonora Margin sediments	RAPID Guaymas Basin	d18O, d18O_stdev
The influence of reactive oxygen species on "‘respiration" isotope effect	The influence of reactive oxygen species on "‘respiration" isotope effect	Microbial isotope effects	d18O_smowslap, d18O_smowslap_log
Triple oxygen isotopes of respiration and photo-oxidation of DOC	Triple oxygen isotopes of respiration and photo-oxidation of DOC	Microbial isotope effects	d18O_smowslap, d18O_smowslap_log

Programs associated with this parameter

U.S. Joint Global Ocean Flux Study

Database

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Parameter: oxygen 16 to oxygen 18 ratio