Particle scavenging in the upper water column off Mindoro Island, Philippine: 234Th/238U disequilibria
Journal
Estuarine, Coastal and Shelf Science
Journal Volume
46
Journal Issue
3
Pages
351-358
Date Issued
1998
Author(s)
Abstract
Vertical profiles of dissolved and particulate 234Th in the upper water column of four stations in the narrow channel adjacent to Mindoro Island, Philippine were determined during November 1991. Calculated from the degree of disequilibrium between particle-reactive 234Th and soluble parent, 238U, the residence times of dissolved and particulate 234Th range from 20 to 42 days and from 9 to 17 days, respectively. Vertical 234Th fluxes of 4300-7000 dpm m-2 day-1 from the upper 200 m are required to balance the deficiency of 234Th.
SDGs
Type
journal article