| 福清湾北部及其以东近岸海域沉积环境和沉积特征 |
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| 引用本文： | 郑承忠.福清湾北部及其以东近岸海域沉积环境和沉积特征[J].台湾海峡,1997,16(4):386-392. |
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| 作者姓名： | 郑承忠 |
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| 作者单位： | 福建海洋研究所!厦门，361012 |
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| 摘 要： | 本文对福清湾北部及其以东近岸海域的地质地貌，潮流和波浪等沉积环境因素，以及对沉积物和悬浮泥沙的粒度，矿物特征进行研究，认为福清湾为溺谷型的半封闭潮汐汊道海湾存在着较大的潮差和潮流流速，沉积物沿潮流方向呈东粗西细和岸边细、向海变粗的潮流分异特征，潮流控制着沉积物的布局，而属于潮控的浅海沉积环境。
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| 关 键 词： | 沉积环境 粒度 沉积特征 近岸 海域 |
Depositional environment and sedimentary characteristics in northern Fuqing Bay and its eastward coastal area |
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| Zheng Chengzhong.Depositional environment and sedimentary characteristics in northern Fuqing Bay and its eastward coastal area[J].Journal of Oceanography In Taiwan Strait,1997,16(4):386-392. |
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| Authors: | Zheng Chengzhong |
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| Abstract: | In this paper,the depositional environment and sedimentary characteristics in northern Fuqing Bay and its eastward coastal area are studied. Relevant factors,such as tides,wave,grain size feature of sediments and of suspending silt, fragment rock and mineral composition,and the sources of sediment are discussed. It is regarded that Fuqing Bay is a tidal embayment of submerged valley where the larger tidal range and flow velocity exist and the distribution of sediments is controlled by tidal currents. The grain size of sediments shows a sorting characteristics with coarser from east to west and from coast to sea. The whole studied area belongs to shallow depositional environment of tide-controlling' The supply of fragment is poorer,coming mainly from the continent during flood periods,from marine erosion of island and rock shore,and from the sediment formed during the low sea level periods. |
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| Keywords: | Depositional environment grain size sedimentary characteristics Fuqing Bay |
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