Sentences with phrase «studying oxygen isotope ratios»

Not exact matches

The Earth's water must have come from its interior, according to a scientist who has studied the ratios of oxygen isotopes in rocks.
For decades, scientists studying climate change have measured the oxygen isotope ratio in tree - ring cellulose to determine the ambient temperature and relative humidity of past climates.
A study by Thomas, Dennis et al 2009 [8] derived a high resolution temperature proxy record from oxygen isotope ratios from the ice core.
In this study, we used oxygen isotope ratios, which is a commonly used palaeothermometer.
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