| 莱州湾西部沉积物粒度特征及沉积分区 |
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| 引用本文： | 黄学勇,高茂生,张戈,侯国华,党显璋,庄海海.莱州湾西部沉积物粒度特征及沉积分区[J].海洋通报,2019,38(3). |
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| 作者姓名： | 黄学勇 高茂生 张戈 侯国华 党显璋 庄海海 |
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| 作者单位： | 辽宁师范大学城市与环境学院,辽宁 大连 116029;中国地质调查局滨海湿地生物地质重点实验室 青岛海洋地质研究所,山东 青岛 266071;中国地质调查局滨海湿地生物地质重点实验室 青岛海洋地质研究所,山东 青岛,266071;辽宁师范大学城市与环境学院,辽宁 大连,116029;中国地质调查局滨海湿地生物地质重点实验室 青岛海洋地质研究所,山东 青岛 266071;青岛大学 环境科学与工程学院,山东 青岛 266071 |
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| 基金项目： | 科技部基础性工作专项 （2014FY210600）；国家重点研发专项 （2016YFC0402801）；中国地质调查项目 （DD20189503） |
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| 摘 要： | 基于莱州湾西部13个岩心柱样粒度组分与参数,运用Flemming粒度三角图,结合系统聚类分析方法,在对岩心柱样进行分类的基础上,将莱州湾西部划分为4个区域,即现代黄河口侧缘、广利河口北潮滩、莱州湾南岸和中部浅海区。根据粒度曲线特征,分析了每个区域内沉积环境的时空变化。结果证明:莱州湾西部百年来沉积特征建立在黄河形成沉积环境之上,沿岸短源河流对沉积环境产生了不同程度影响。现代黄河口侧缘沉积环境受黄河影响至今,沿岸河流改造作用较小;广利河口北潮滩沉积环境形成于黄河行水期间,目前广利河水系对原有沉积环境改造作用明显;莱州湾南岸小清河、弥河取代黄河成为影响沉积环境的最重要因素;莱州湾中部海域则受到沿岸河流的综合影响。沉积环境以广利河口为界限,呈现南北分异。北部沉积环境随时间变化明显,在垂向上反映了黄河多期次行水带来的沉积特征;南部沉积物质来源依次为广利河、小清河、弥河,沉积环境在水平方向上变化明显。
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| 关 键 词： | 莱州湾 黄河 粒度 聚类分析 沉积环境 |
| 收稿时间： | 2018/9/3 0:00:00 |
| 修稿时间： | 2018/10/30 0:00:00 |
Grain size characteristics and sedimentary division in the Western Laizhou Bay |
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| HUANG Xue-yong,GAO Mao-sheng,ZHANG Ge,HOU Guo-hu,DANG Xian-zhang and ZHUANG Hai-hai.Grain size characteristics and sedimentary division in the Western Laizhou Bay[J].Marine Science Bulletin,2019,38(3). |
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| Authors: | HUANG Xue-yong GAO Mao-sheng ZHANG Ge HOU Guo-hu DANG Xian-zhang and ZHUANG Hai-hai |
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| Institution: | College of Urban and Environmental Science, Liaoning Normal University, Dalian116000, China; Key Laboratory of Coastal Wetland Biogeosciences, China Geologic Survey, Qingdao Institute of Marine Geology, Qingdao 266071, China;,Key Laboratory of Coastal Wetland Biogeosciences, China Geologic Survey, Qingdao Institute of Marine Geology, Qingdao 266071, China;,College of Urban and Environmental Science, Liaoning Normal University, Dalian116000, China,Key Laboratory of Coastal Wetland Biogeosciences, China Geologic Survey, Qingdao Institute of Marine Geology, Qingdao 266071, China;,Key Laboratory of Coastal Wetland Biogeosciences, China Geologic Survey, Qingdao Institute of Marine Geology, Qingdao 266071, China; and Key Laboratory of Coastal Wetland Biogeosciences, China Geologic Survey, Qingdao Institute of Marine Geology, Qingdao 266071, China; College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China |
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| Abstract: | Based on the grain size components and parameters of 13 core samples in the west of Laizhou Bay, the west of Laizhou Bay is divided into four areas using flemming grain size triangulation combining with system cluster analysis method: the side edge of modern Yellow River Estuary, the north tidal flat of Guangli River Estuary, the south bank of Laizhou Bay, and the shallow sea area in the middle part. According to the characteristics of particle size curve, the temporal and spatial changes of sedimentary environment in each region are analyzed. Results show that the sedimentary characteristics of the western Laizhou Bay are built on the Yellow River sedimentary environment, and short-sourced alongshore rivers influence the sedimentary environment to different degrees. The sedimentary environment on the side edge of the modern Yellow River Estuary is influenced by the Yellow River so far, and the coastal river reconstruction is relatively small. The sedimentary environment of the northern tidal flat in Guangli River Estuary was formed during the course of the Yellow River running. At present, the Guangli River system plays a significant role in transforming the original sedimentary environment. Xiaoqing River and Mihe River in the southern bank of Laizhou Bay have replaced the Yellow River as the most important factors influencing the sedimentary environment. The central area of Laizhou Bay is comprehensively influenced by coastal rivers.The sedimentary environment is bounded by Guangli Estuary and presents north-south differentiation. The sedimentary environment in the north changes obviously with time, and it reflects the sedimentary characteristics brought by the multi-stage water movement of the Yellow River in the vertical direction. The sources of sedimentary materials in the south are Guangli River, Xiaoqing River and Mihe River in turn, and the sedimentary environment changes obviously in the horizontal direction. |
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| Keywords: | Laizhou Bay Yellow River grain size system cluster analysis sedimentary environment |
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