项目名称: 放射性核素示踪九龙江河口颗粒物动力学及污染物输运
项目编号: No.41306073
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 天文学、地球科学
项目作者: 黄德坤
作者单位: 国家海洋局第三海洋研究所
项目金额: 26万元
中文摘要: 颗粒活性放射性核素(7Be、210Pb和234Th)被广泛应用于示踪研究河口和近岸悬浮泥沙的来源、输运和归宿。本项目拟通过对九龙江河口的放射性核素(7Be、210Pb和234Th)活度分布、滞留时间的研究,探讨九龙江河口核素分布的时空变化及核素的来源与归宿。本研究将为九龙江河口悬浮泥沙沉降在生物地球化学循环中的作用提供必要的参数,并进一步了解颗粒活性污染物的输运。
中文关键词: 悬浮泥沙;放射性核素;清除;输运;九龙江
英文摘要: Particle-reactive radionuclides (7Be、210Pb和234Th) have been used extensively as tracers in estuarine and coastal environments to evaluate the transport and sink of suspended sediments. The aim of the present project is to study the settling dynamics of suspended sediments and the implication by sedimentary particulate pollutants in the Jiulongjiang Estuary. The research contents include the distribution patterns of particle-reactive radionuclides (7Be、210Pb and 234Th), the residence time and the sink of the particulate pollutants in the Jiulongjiang Estuary.Such research results can provide the useful information for the biogeochemical reactivity of chemical constituents.
英文关键词: suspended sediments;radionuclides;removal;transport;Jiulongjiang