| 摘要: |
| 基于2000 年8 月, 2002 年8 月, 2004 年9 月, 2005 年5 月, 2005 年7 月及2005 年9 月莱州湾的大面观测资料以及黄河利津站2000—2005 年入海径流量资料, 分析了黄河入海径流对莱州湾盐度分布的影响, 通过计算莱州湾的平均盐度发现2003 年之后莱州湾平均盐度较2003 年之前明显降低。在考虑黄河入海径流量、降水、蒸发及与北黄海的水交换等因素的基础上建立了箱式模型, 并以此模型模拟了近年来莱州湾平均盐度的变化, 同样看到莱州湾平均盐度的显著降低已在2003 年发生, 其主要原因是黄河入海径流量的增加。分析模型结果得出近年来黄海入海径流量的变化不仅决定着莱州湾平均盐度的年际变化, 而且还主导着莱州湾月平均盐度的变化。
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| 关键词: 莱州湾 盐度 黄河 径流量 |
| DOI：10.11693/hyhz201001002002 |
| 分类号: |
| 基金项目:国家重点基础研究发展规划项目: “中国典型河口-近海陆海相互作用及其环境效应”, 2002CB412402 号; 教育部新世纪优秀人才支持计划项目, NCET-05-0592 号; 日本综合地球环境学研究所研究项目: 1-2FR“近年黄河急剧水环境变化及其意义”, 2002—2007 |
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| SALINITY CHANGE AND INFLUENCING FACTOR IN THE LAIZHOU BAY FROM 2000 TO 2005 |
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ZHAO Peng1, JIANG Wen-Sheng1, MAO Xin-Yan1, GAO Hui-Wang2, GUO Xin-Yu3
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1.Physical Oceanography Laboratory, Ocean University of China;2.College of Environmental Science and Engineering, Ocean University of China;3.Center for Marine Environmental Studies, Ehime University
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| Abstract: |
| The influence of Huanghe (Yellow) River discharge on the distribution of salinity in the Laizhou Bay is discussed in this paper, based on the data of cruise observation in the bay in Aug. 2000, Aug. 2002, Sep. 2004, May. 2005, Jul. 2005, and Sep. 2005. It is found that the average salinity after 2003 is obviously lower than that before 2003, and the average salinity changes seasonally with the changes of the river discharge. A box model is established to simulate the changes in the salinity of the bay considering the river discharge, precipitation, evaporation, and the water exchange between the bay and the open sea. It is concluded that the Huanghe River discharge determines not only the annual change of the average salinity, but also the monthly ones in the bay.
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| Key words: Laizhou Bay, Salinity, Huanghe (Yellow) River, Discharge |
