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LIU Yun-ling, WANG Ya-ping, GAO Jian-hua, JIA Jian-jun, XIA Xiao-ming. Specific activity distribution patterns of lead-210 and sediment accumu-lation rates in the Jiaozhou Bay in Shandong Province, China[J]. Haiyang Xuebao, 2010, 32(1): 83-93.
Citation: LIU Yun-ling, WANG Ya-ping, GAO Jian-hua, JIA Jian-jun, XIA Xiao-ming. Specific activity distribution patterns of lead-210 and sediment accumu-lation rates in the Jiaozhou Bay in Shandong Province, China[J]. Haiyang Xuebao, 2010, 32(1): 83-93.

Specific activity distribution patterns of lead-210 and sediment accumu-lation rates in the Jiaozhou Bay in Shandong Province, China

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  • Received Date: 2009-04-13
  • Column-like cores were collected in the Jiaozhou Bay in June 2006 and the lead-210 specific activity was measured in the sediments of these cores. The results show that there are four types of vertical distribution patterns of lead-210 specific activity, i.e., the two-section, three-section, multisection and reversed-section patterns. Based on the CIC (constant initial concentration) model, the deposition rates and the depositonal fluxes are estunated as 1.49~24.96 mm/a and 0.17~2.62 g/(cm2 a), respectively. The magnitude of the accumulation rate is 100 in the study area. A slight sedimentation or even partial erosion occur in the deep channels in the bay. It indicates that the sedimentary environment is relatively stable in the Jiaozhou Bay during the past century.
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