摘要
悬沙数值模拟中,受实测条件限制,难以对大范围悬沙场进行实地测量以获取丰富的验证资料,限制了数值精度的提升。文章以海口湾水域为例,利用遥感影像覆盖范围广的特点,通过多光谱遥感影像的悬沙反演获得表层含沙量分布,并利用含沙量实测数据拟合出表层含沙量与垂线平均含沙量的关系,从而得到垂线平均含沙量反演场,作为数值模拟的验证及拟合资料,用于提高悬沙数值模拟精度。分别以实测数据和遥感反演数据作为验证资料对模拟结果精度进行比对,验证了该方法的可行性。
In suspended sediment numerical simulation,it was difficult to take a large-scale measurement of suspended sediment field to accquire rich verification data due to the in-site condition,which limited the improvement of numerical accuracy.Taking Haikou Bay as an example,the characteristics of wide coverage of remote sensing images were used to obtain the distribution of surface sediment concentration through suspended sediment inversion of multispectral remote sensing images,and the in-site data was used to fit the relationship between surface sediment concentration and vertical average sediment concentration.The inversion field of vertical average sediment concentration was used as the verification and fitting data of numerical simulation,so as to improve the accuracy of suspended sediment numerical simulation.The accuracy of the simulation results is compared with the in-site data and remote sensing inversion data,which verifies the feasibility of the method.
作者
杜洋
李文拓
沈维娜
李怀远
DU Yang;LI Wen-tuo;SHEN Wei-na;LI Huai-yuan(China National Offshore Oil Corporation Hainan Energy Co. LTD., Haikou 570105,China;Tianjin Research Institute for Water Transport Engineering, Key Laboratory of Engineering Sediment, Ministry of Trasport, Tianjin 300456, China)
出处
《水道港口》
2021年第5期582-587,608,共7页
Journal of Waterway and Harbor
基金
中海油海南能源有限公司综合科研项目-南海远海勘探作业保障体系研究(CEL2020HNFN0032)
国家重点研发计划项目(2018YFC0809600,2018YFC0809602)
中央级公益性科研院所科研创新基金(TKS20200413)。
关键词
海口湾
悬浮泥沙
遥感反演
数值模拟
Haikou Bay
suspended sediment
remote sensing inversion
numerical simulation
