强潮海湾近岸表层沉积物时空分布特征及水动力响应——以杭州湾北岸为例

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强潮海湾近岸表层沉积物时空分布特征及水动力响应——以杭州湾北岸为例

赵建春

华东师范大学河口海岸学国家重点实验室上海 200062

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Study on the Characteristics of Temporal and Spatial Changes in Properties 〖JZ〗 of Surface Sediment on NearShore Seabed of StrongTide Bay:a case from the north bank of Hangzhou Bay in Shanghaia

ZHAO Jianchun

State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200062

摘要

摘要: 沉积物粒度参数是表征其分布和输运特征的重要信息。根据2005年7月和2006年12月采集的167个表层沉积物样品以及收集到的实测水文资料，以杭州湾北岸为例，分析研究强潮海湾近岸表层沉积物的时空变异特征，同时在应用GSTA模型对沉积物进行输运趋势分析的基础上探讨该区域的泥沙来源，并通过掀沙计算分析表层沉积物对高能水动力环境的响应过程。结果表明：（1）杭州湾北岸表层沉积物普遍较细，以粉砂质粘土为主，在南汇、金山岸段存在两个砂质密集区，并且随动力条件的不同在由岸向海方向呈现出逐渐变细的粒度趋势；（2）表层沉积物粒度特征在洪、枯季亦存有差异，枯季较洪季存在普遍粗化现象；（3）GSTA模型结果显示该区域泥沙主要来源于上游岸段来沙和湾口海域来沙，此外局部区域之间的泥沙交换过程也是区域内泥沙平衡协调的重要途径；（4）潮流掀沙作用主要以南汇和奉贤水域为主，波浪掀沙作用范围基本覆盖研究区域的整个岸段，且波高为1.5 m（P=94.9%）以下的波浪掀沙作用对浅水区域的影响最为显著。
- 杭州湾 /
- 表层沉积物 /
- 时空变化 /
- 水动力
Abstract: Grain size parameter is the most important information of sediment, which can point out the characteristics of distribution and transportation. Based on analysis data of 167 samples which were collected from the north coast of Hangzhou Bay in June 2005 and December 2006, a study on the rules of temporal and spatial changes in properties of seabed surface sediment in strongtide bay is conducted. As well as, through the Grain Size Transport Analysis model, a conveying trend analysis of sediment in this basin has been studied, in the base of which a research of sand sources is primarily discussed. Finally, the response process of tidal flat sediment to the highenergy hydrodynamic environment is also analyzed. The results indicate that: (1) The grain size of tidal flat sediment in north coast of Hangzhou Bay is generally small, and silty clay is the main sediment types in this basin; (2) The vertical difference of grain size characteristics is more obvious than the transversal, and also there is some seasonal variation between flood season and withered season; (3)The results of GSTAmodel show that，the sediment of this basin is mainly from the upstream and the sea waters. As well as , the interregional sediment exchange is another important method to get the balance of sediment supply in this basin；(4) Agency coverage where tide current can stir surface sediment is mostly the Nanhui and Fengxian water area, while the wave stirring agency coverage almost covers the whole section of the research basin, on which the wave height below 1.5m effect most significantly.
- Hangzhou Bay /
- surface sediment /
- temporal and spatial variation /
- hydrodynamics

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[1]	李国刚, 王亮, 李薏新, 毕崇昊, 赵晟, 胡邦琦. 东马里亚纳海盆表层沉积物元素地球化学特征及其指示意义 . 沉积学报, 2024, (): -. doi: 10.14027/j.issn.1000-0550.2024.002
[2]	高铭君, 李育, 张占森, 周雪如, 李海烨, 段俊杰, 薛雅欣. 祁连山周边内流区人类活动对表层沉积物的影响 . 沉积学报, 2024, 42(4): 1279-1296. doi: 10.14027/j.issn.1000-0550.2022.115
[3]	张霄宇, 陶春辉, 廖时理, 周建平, 李怀明, 滕国超, 黄大松. 西南印度洋洋中脊表层沉积物地球化学特征及其热液活动指示意义 . 沉积学报, 2020, 38(4): 727-736. doi: 10.14027/j.issn.1000-0550.2019.085
[4]	胡京九, 张虎才, 常凤琴, 李婷, 蔡萌, 段立曾, 张龙吴, 张扬. 程海表层沉积物粒度空间分布特征及其影响因素 . 沉积学报, 2020, 38(2): 340-348. doi: 10.14027/j.issn.1000-0550.2019.032
[5]	李华勇, 张虎才, 陈光杰, 常凤琴, 段立曾, 王教元, 卢慧斌, 吴汉, 胡葵. 云南高原湖泊表层沉积物粒度特征及环境指示意义 . 沉积学报, 2017, 35(3): 499-507. doi: 10.14027/j.cnki.cjxb.2017.03.008
[6]	王海邻, 王长征, 宋慧波, 胡斌. 杭州湾庵东滨岸潮间带现代沉积物中的生物遗迹特征 . 沉积学报, 2017, 35(4): 714-729. doi: 10.14027/j.cnki.cjxb.2017.04.006
[7]	吴汉, 常凤琴, 张虎才, 李华勇, 蒙红卫, 段立曾, 刘东升, 李楠, 朱梦姝. 泸沽湖表层沉积物粒度空间分布特征及其影响因素 . 沉积学报, 2016, 34(4): 679-687. doi: 10.14027/j.cnki.cjxb.2016.04.008
[8]	张凯棣, 李安春, 董江, 张晋. 东海表层沉积物碎屑矿物组合分布特征及其物源环境指示 . 沉积学报, 2016, 34(5): 902-911. doi: 10.14027/j.cnki.cjxb.2016.05.009
[9]	席雅娟, 师育新, 戴雪荣, 刘朝, 吴紫阳. 杭州湾潮滩沉积物黏土矿物空间差异与物源指示 . 沉积学报, 2016, 34(2): 315-325. doi: 10.14027/j.cnki.cjxb.2016.02.010
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[16]	邢云. 潮滩表层沉积物磁性特征的季节性变化及其对沉积动力作用的响应：以杭州湾北岸为例 . 沉积学报, 2007, 25(2): 267-273.
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强潮海湾近岸表层沉积物时空分布特征及水动力响应——以杭州湾北岸为例

华东师范大学河口海岸学国家重点实验室上海 200062

收稿日期: 1900-01-01

修回日期: 1900-01-01

刊出日期: 2008-12-10

关键词:

杭州湾 /

表层沉积物 /

时空变化 /

水动力

摘要: 沉积物粒度参数是表征其分布和输运特征的重要信息。根据2005年7月和2006年12月采集的167个表层沉积物样品以及收集到的实测水文资料，以杭州湾北岸为例，分析研究强潮海湾近岸表层沉积物的时空变异特征，同时在应用GSTA模型对沉积物进行输运趋势分析的基础上探讨该区域的泥沙来源，并通过掀沙计算分析表层沉积物对高能水动力环境的响应过程。结果表明：（1）杭州湾北岸表层沉积物普遍较细，以粉砂质粘土为主，在南汇、金山岸段存在两个砂质密集区，并且随动力条件的不同在由岸向海方向呈现出逐渐变细的粒度趋势；（2）表层沉积物粒度特征在洪、枯季亦存有差异，枯季较洪季存在普遍粗化现象；（3）GSTA模型结果显示该区域泥沙主要来源于上游岸段来沙和湾口海域来沙，此外局部区域之间的泥沙交换过程也是区域内泥沙平衡协调的重要途径；（4）潮流掀沙作用主要以南汇和奉贤水域为主，波浪掀沙作用范围基本覆盖研究区域的整个岸段，且波高为1.5 m（P=94.9%）以下的波浪掀沙作用对浅水区域的影响最为显著。

Study on the Characteristics of Temporal and Spatial Changes in Properties 〖JZ〗 of Surface Sediment on NearShore Seabed of StrongTide Bay:a case from the north bank of Hangzhou Bay in Shanghaia

State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200062

Received Date: 1900-01-01

Rev Recd Date: 1900-01-01

Publish Date: 2008-12-10

Keywords:

Abstract: Grain size parameter is the most important information of sediment, which can point out the characteristics of distribution and transportation. Based on analysis data of 167 samples which were collected from the north coast of Hangzhou Bay in June 2005 and December 2006, a study on the rules of temporal and spatial changes in properties of seabed surface sediment in strongtide bay is conducted. As well as, through the Grain Size Transport Analysis model, a conveying trend analysis of sediment in this basin has been studied, in the base of which a research of sand sources is primarily discussed. Finally, the response process of tidal flat sediment to the highenergy hydrodynamic environment is also analyzed. The results indicate that: (1) The grain size of tidal flat sediment in north coast of Hangzhou Bay is generally small, and silty clay is the main sediment types in this basin; (2) The vertical difference of grain size characteristics is more obvious than the transversal, and also there is some seasonal variation between flood season and withered season; (3)The results of GSTAmodel show that，the sediment of this basin is mainly from the upstream and the sea waters. As well as , the interregional sediment exchange is another important method to get the balance of sediment supply in this basin；(4) Agency coverage where tide current can stir surface sediment is mostly the Nanhui and Fengxian water area, while the wave stirring agency coverage almost covers the whole section of the research basin, on which the wave height below 1.5m effect most significantly.

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强潮海湾近岸表层沉积物时空分布特征及水动力响应——以杭州湾北岸为例

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Study on the Characteristics of Temporal and Spatial Changes in Properties 〖JZ〗 of Surface Sediment on NearShore Seabed of StrongTide Bay:a case from the north bank of Hangzhou Bay in Shanghaia

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强潮海湾近岸表层沉积物时空分布特征及水动力响应——以杭州湾北岸为例

华东师范大学河口海岸学国家重点实验室上海 200062

English Abstract

Study on the Characteristics of Temporal and Spatial Changes in Properties 〖JZ〗 of Surface Sediment on NearShore Seabed of StrongTide Bay:a case from the north bank of Hangzhou Bay in Shanghaia

State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200062

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强潮海湾近岸表层沉积物时空分布特征及水动力响应——以杭州湾北岸为例

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Study on the Characteristics of Temporal and Spatial Changes in Properties 〖JZ〗 of Surface Sediment on NearShore Seabed of StrongTide Bay:a case from the north bank of Hangzhou Bay in Shanghaia

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强潮海湾近岸表层沉积物时空分布特征及水动力响应——以杭州湾北岸为例

华东师范大学河口海岸学国家重点实验室 上海 200062

English Abstract

Study on the Characteristics of Temporal and Spatial Changes in Properties 〖JZ〗 of Surface Sediment on NearShore Seabed of StrongTide Bay:a case from the north bank of Hangzhou Bay in Shanghaia

State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200062

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华东师范大学河口海岸学国家重点实验室上海 200062