Vertical distributions of both concentrations and stable isotopic compositions of nitrate, including the 17O-excesses (Δ17O), were determined four times during 1 yr within the mesotrophic water column ...

Oxygen was the first stable isotope used to determine migratory history in marine environments. Stable isotope analyses using marine oxygen have used barnacle shells attached to the study animal.

This measurement provides carbon, oxygen and “clumped” isotope ratios for carbonate minerals ... subsurface fluid flow The second Thermo 253+ isotope ratio mass spectrometer in the CUBES SIL is ...

These unique networks provide Member States access to global and regional data sets on water isotopes (oxygen-18, deuterium and tritium) and related mapping products. These widely used data sets are ...