Radium isotopes in the Dead Sea Lake and the surrounding aquifer were studied in order to define the processes controlling their activities in the lake and in the groundwater.226Ra activities in the groundwater show a significant removal of226Ra from the lake water as they enter the aquifer. Short-lived radium isotopes show a nonlinear relation with salinity which is caused by the effect of salinity on the adsorption of radium. Simulations of radium distribution in the aquifer, using the code of SUTRA-MS, were done in order to estimate the adsorption distribution coefficient of radium in the aquifer.228Ra activities in the Dead Sea water are much higher than the expected activities according to the radium sources to the Dead Sea. These observations together with the removal of226Ra in the Dead Sea groundwater may indicate a large-scale saline water circulation in the aquifer.
|Title of host publication||Water-Rock Interaction|
|Number of pages||3|
|State||Published - 1 Jan 2010|
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© 2010 Taylor & Francis Group, London.