文献类型：期刊文献

中文题名：大连港海域油含量时空变化特征分析

英文题名：Analysis of temporal and spatial variation in petroleum content in sea waters at Dalian port

作者：黄妙芬[1];刘杨[2];邢旭峰[1];王忠林[1];李占强[1]

机构：[1]广东海洋大学数学与计算机学院,广东湛江524088;[2]中国石油勘探开发研究院,北京100083

年份：2020

卷号：35

期号：2

起止页码：273

中文期刊名：大连海洋大学学报

外文期刊名：Journal of Dalian Ocean University

收录：CSTPCD、、北大核心2017、CSCD2019_2020、北大核心、CSCD

基金：国家自然科学基金资助项目(41771384);国家重点研发计划项目(2016YFC1401203);广东海洋大学2017年“创新强校工程”自主创新能力提升项目(GDOU2017052501);广东海洋大学科研启动经费资助项目(E16187)。

语种：中文

中文关键词：大连港;油含量;潮汐;NDPRI;时空变化

外文关键词：Dalian port;petroleum content;tide;NDPRI;temporal and spatial variation

中文摘要：为了掌握东北原油与成品油转运基地——大连港海域油含量的时空分布特征,于2018年8月25—27日采用连续性测量的方式,获取了大连港海域3个站点分别在0、3、5、10、15 m深度30个观测时刻的油含量、流速和流向等数据,分析了大连港海域油含量随潮汐的变化特征,并建立了油含量的时间变化模型,修正了水体石油污染归一化遥感反射比指数NDPRI(Normalized difference petroleum remote sensing reflectance index)反演水中石油含量的遥感模式,将该模式应用于2018年8月25日过境的Landsat 8卫星数据中,反演出大连港海水表层的油含量,并分析了其空间分布特征。结果表明:由于各站点观测时间处于不同的涨落潮时刻,水体的流向和流速不同,导致油含量随时间变化比较复杂;油含量随时间的变化可以用6次方多项式函数来描述;利用修正的NDPRI遥感模型反演的油含量值与实测值比较接近,表明修正后的模型适用于该海域;从空间分布上来看,大连港海域油含量空间分布具有明显的差异,浓度值的变化范围为0.4~5.0 mg/L,紧贴沿岸的海域油含量相对较低,鲇鱼湾东边及三山岛的东边、北边呈现高值区,而大窑湾、三山岛西侧及A站点的南边为低值区。研究表明,本研究中所建立的油含量遥感反演模型,反演效果较好,适用于大连港海域油含量的提取。

外文摘要：Petroleum content,velocity and direction were continuously monitored in sea waters with depth of 0,3,5,10 and 15 m,at 3 sampling sites in Dalian port,Liaoning Province,during 7:00-17:00 in an hour interval from August 25 to 27,2018 to evaluate the temporal and spatial distribution properties of petroleum content in Dalian Port and to establish a time-varying model of oil content.The Normalized Difference Petroleum Remote Sensing Reflectance Index(NDPRI)was applied on LANDSAT 8 satellite data of August 25,2018 to retrieve the petroleum content in water.The petroleum content in the surface water at Dalian port was retrieved,and the distribution characteristics of petroleum content in the horizontal direction were analyzed.It was found that the variation in petroleum content with time was complicated due to the different observation time at different ebb and flow moments.The variation in petroleum content with time was described by a six-power polynomial function.The inversion value of remote sensing analysis was close to the measured value,indicating that the modified model was suitable for this area.There was significant difference in spatial distribution of the petroleum contents,varying from 0.4 mg/L to 5.0 mg/L,the relatively low petroleum content along the coast.The high petroleum content areas were observed in the east of Nianyu Bay,East and northern Sanshan Island,and the low petroleum content areas in Dayao bay,western Sanshan Island and southern Site A.The findings indicate that the remote sensing model established in present study works well in the reversion of petroleum substances concentration in Dalian Port.