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Carbon-14, C-14, 14C or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons. Its presence in organic matter is the basis of the radiocarbon dating method pioneered by Willard Libby and colleagues (1949) to date archaeological, geological and hydrogeological samples.
Carbon-14 is a radioisotope of the chemical element carbon, which has 8 neutrons in its atomic nucleus in addition to the element-specific 6 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 14. See also: list of Carbon isotopes.
1 Μαρ 2022 · Introduction. Noise pollution is considered a major environmental problem, which has a significant effect on the marine environment. It has become a growing global concern, generated by different natural and anthropogenic activities in marine areas (Hildebrand, 2009).
1 Οκτ 2015 · Illustrated using marine mammal examples, we outline ways that ocean noise can affect individuals, populations and ecosystems. We discuss two ways to mitigate harmful effects: setting allowable harm limits at the level of the population; and marine spatial planning to identify priority areas for mitigation, or 'Quiet Marine Protected Areas' (Q ...
23 Οκτ 2020 · While Δ 14 CO 2 decreases strongly, the number of atoms of 14 C in the atmosphere actually increases due to a large efflux of 14 C from the ocean to the atmosphere in response to the changing air-sea disequilibrium.
Researchers are uncovering just how large the impact of man-made noise is on ocean life. But there are some surprisingly simple ways we could tackle this overlooked pollution problem.
7 Ιουν 2024 · Climate Change Could Make It Worse. Noise from shipping and other ocean industries are drowning out the natural sounds of the ocean, and climate change could soon turn up the volume. By...
