Impact of tropical cyclone Matmo on mixed zone of the Yellow and Bohai Seas     

过杰  纪殿胜  侯查伟  郭凯  纪灵 《中国海洋湖沼学报》2018,(5)

The Bohai Sea is a low-lying semi-enclosed sea area that is linked to the Yellow Sea via the Bohai straits(mixed zone). Its of fshore seabed is shallow, which makes it vulnerable to serious marine meteorological disasters associated with the northward passage of Pacific tropical cyclones. Analyses on data of remote sensing and buoy of the mixed zone of the Yellow and Bohai seas indicate that all the wind speed, significant wave height, and salinity(SAL) increased, sea surface temperature decreased, and wind energy density changed considerably during the passage of tropical cyclone Matmo on July 25, 2014. It was found that the SAL inversion layer in the mixed zone of the Yellow and Bohai Seas was caused by the tropical cyclone. Furthermore, it was found that the tropical cyclone transported the northern Yellow Sea cold water mass(NYSCWM) into the mixed zone of the Yellow and Bohai Seas. The NYSCWM has direct influence on both the aquaculture and the ecological environment of the region. Therefore, further research is needed to establish the mechanism behind the formation of the SAL inversion layer in the mixed zone, and to determine the influence of tropical cyclones on the NYSCWM.  相似文献   

烟台港倾倒区表层沉积物重金属的富集特征及风险评价     

宁璇璇  夏炳训  姜军成  杨鲁宁  纪殿胜 《海洋科学》2013,37(4):88-94

分析了2001~2011年烟台港倾倒区表层沉积物中6种重金属的含量及时空分布特征,采用地累积指数(Igeo)和潜在生态风险指数(ERI)对重金属富集现状及潜在生态风险进行评价。结果显示：历次调查重金属含量均较低且空间分布差异小,与黄海背景值相比, Cd和Cu出现一定程度的富集。ERI评价表明2011年倾倒区潜在生态风险性较低,年际变化顺序为：2008年＞2006年＞2009年＞2011年＞2001年, Cd和Hg是近年来的主要风险因子。  相似文献   

烟台开发区近海表层沉积物重金属的分布特征与风险评价          下载免费PDF全文

宁璇璇  夏炳训  姜军成  纪殿胜  杨鲁宁 《海洋通报》2013,32(1):100-106

对烟台开发区近海表层沉积物6种重金属及有机碳进行了测定,探讨了重金属含量、分布特征与有机碳间的相关关系,并采用地累积指数法和潜在生态风险指数法进行了污染及风险分析.结果显示:研究区域重金属含量均值低于国家沉积物质量Ⅰ类标准上限值.Cu、Zn、As含量呈现由西至东降低、套子湾内由北向南增大的趋势;除调查区域西侧外,Pb、Cd在山后附近海域存在另一高值区,而Hg高值则主要集中在调查区域西侧.Pearson分析表明,Cu、Hg、Zn、As之间及与有机碳含量间存在显著正相关性.Igeo评价显示,Cd以轻度污染为主,而Cf计算表明Cd属于中等污染;Cd显示调查区域基本属于低污染,西侧3个站位达到中等污染程度.风险评价表明,Cd为最主要的风险因子,Hg也存在一定风险.调查区域总体属于低风险,部分站位达到中等风险,主要受Cd和Hg污染所致.  相似文献