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The transfer of radiocarbon into the ocean can be favoured in some regions (COC levels of the estuary reflect a mix between ocean waters and freshwater.

It is important to mention that these processes are not uniform over the global ocean and thus the disequilibrium is not only between ocean and atmosphere, but there are also differences in radiocarbon levels within the ocean.The physics of decay and origin of carbon 14 for the radiocarbon dating1: Formation of Carbon-14.2: Decay of Carbon-14.3: The “equal” equation is for living organisms, and the unequal one is for non-living ones, in which the C-14 then decays (hence the 2).From: Wikimedia Commons We can indirectly date glacial sediments by looking at the organic materials above and below glacial sediments. Marine geological constraints for the grounding-line position of the Antarctic Ice Sheet on the southern Weddell Sea shelf at the Last Glacial Maximum.We are home to one of a new generation of ultra-compact AMS instruments, a MICADAS accelerator mass spectrometer, designed and built at ETH, Zurich.The MICADAS is a high-precision, high throughput instrument and is capable of determining radiocarbon dates on both traditional graphite targets and CO (via a gas interface system).Here the authors answer some questions about marine radiocarbon and its variability.What are the different reservoirs of carbon on Earth and how does carbon move between them?For the calculation of MRE offsets from archaeological contexts, there is a lack of robust protocols to assure sample suitability.Moreover, the radiocarbon community has suggested the use of local calibration curves to better account for regional MRE offsets in the heterogeneous ocean reservoir, but a reasonable method for their construction has not yet been proposed.The question of the dominant control on the MRE in different localities is still a subject of debate.More empirical data is needed to reconstruct spatiotemporal changes in the MRE, allowing model calibration and correlation with a changing climate.