| 渤海湾现代沉积速率和沉积过程 |
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| 引用本文： | 杜瑞芝 刘国贤. 渤海湾现代沉积速率和沉积过程[J]. 海洋地质与第四纪地质, 1990, 10(3): 15-22 |
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| 作者姓名： | 杜瑞芝 刘国贤 |
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| 作者单位： | 国家海洋局海洋环境保护研究所 大连(杜瑞芝,刘国贤,杨松林,周义华),国家海洋局海洋环境保护研究所 大连(张兵) |
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| 摘 要： | 本文报道了笔者于渤海湾采集的9个柱样品,用~(210)Pb法测定的现代沉积速率;~(210)Pb剖面揭示出人类和自然原因所产生的沉积事件。并对该湾的沉积过程进行了探讨。 海河口844站~(210)Pb剖面反映出六十年代初,天津新港进行水下工程时出现瞬时堆积的记录;1041站记录了1964年一次雍潮出现的高速沉积带。从而,表明人类和自然对现代沉积作用的贡献,并且,指出这对海洋工程、沉积学及环境科学研究均十分重要。
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| 关 键 词： | 渤海湾 海洋 沉积物 沉积 速率 |
MODERN SEDIMENTATION RATE AND SEDIMENTATION PROCESS IN BOHAI BAY |
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| Du Ruizhi Liu Guoxian Yang Songlin Zhou Yihua Zhang Bing. MODERN SEDIMENTATION RATE AND SEDIMENTATION PROCESS IN BOHAI BAY[J]. Marine Geology & Quaternary Geology, 1990, 10(3): 15-22 |
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| Authors: | Du Ruizhi Liu Guoxian Yang Songlin Zhou Yihua Zhang Bing |
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| Abstract: | 210Pb dating has determined modern sedimentation rate for 9 cores from Bohai Bay. It is found that sedimentation rate is relatively high off the Haihe River mouth (generally over 15mm/yr, and even up to 40-50mm/yr near the bay apex), and gradually decreases in anchorage and outer sea area, usually less than 8mm/yr.Radioactive profiles of the sediments have revealed important events in modern sedimentary environments, core column at site 1041 records the time of the Huanghe River flood and channel changes; and 210Pb profile from site 844 reflects the"instant accumulation"caused by human activities.We think that studies of modern sedimentation rate can be able to unco ver both man-made and natural events and this is very significant to ocean development engineering and scientific researches of environment. |
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| Keywords: | Bohai Bay marine sediments sedimentation rate 210Pb |
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