Analysis of temporal and spatial variation in petroleum content in sea waters at Dalian port
HUANG Miaofen1, LIU Yang2, XING Xufeng1, WANG Zhonglin1, LI Zhanqiang1
1.Faculty of Mathematics and Computer Science, Guangdong Ocean University, Zhanjiang;2.Research Institute of Petroleum Exploration & Development, Beijing
Abstract: 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.
黄妙芬, 刘杨, 邢旭峰, 王忠林, 李占强. 大连港海域油含量时空变化特征分析[J]. 大连海洋大学学报, 2020, 35(2): 273-279.
HUANG Miaofen, LIU Yang, XING Xufeng, WANG Zhonglin, LI Zhanqiang. Analysis of temporal and spatial variation in petroleum content in sea waters at Dalian port. Journal of Dalian Ocean University, 2020, 35(2): 273-279.
2020, Vol. 35 
