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Chen Feizhou, Huang Yipu, Chen Min. Application of vertically integrated sampling approach to studyingnew production via 234Th-238U disequilibria[J]. Haiyang Xuebao, 1999, 21(6): 40-46.
Citation: Chen Feizhou, Huang Yipu, Chen Min. Application of vertically integrated sampling approach to studyingnew production via 234Th-238U disequilibria[J]. Haiyang Xuebao, 1999, 21(6): 40-46.

Application of vertically integrated sampling approach to studyingnew production via 234Th-238U disequilibria

  • Received Date: 1998-08-16
  • Rev Recd Date: 1999-05-13
  • The spatial and temporal distributions of new production vary largely in different sea areas. To understand the level of new production in the study sea area better, an estimate of new production must be obtained in large spatial and temporal scales. The disequilibrium of 234Th-238U is an effective method for studying new production. Two sampling projects, i. e.,vertically integrated sampling approach(based on trapezoidal integration) and discrete layer sampling approach, are compared in the Xiamen Bay and the northern South China Sea. The coincident results from the two sampling approaches suggest that the vertically integrated sampling approach is not only effective and reliable, but also significantly reduces the number and volume of samples. It is allowed to estimate new production by 234Th-238U disequilibria in large spatial scale.
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