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We investigated the spatial and temporal distribution of naturally-occurring short-lived radium isotopes ( 224 Ra, t 1/2 = 3.6 d and 223 Ra, t 1/2 = 11 d) to examine coastal water mixing dynamics of the third world largest estuary, Yangtze River Estuary (YRE) during two field trips in April 2010 and May 2011. Distributions of the 224 Ra/ 223 Ra activity...
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