天津港邻近海域精密潮汐模型的构建  

Establishment of a Regional Tidal Model Adjacent to Tianjin Port

作　　者：白亭颖 

机构地区：[1]天津海事测绘中心,天津300222

出　　处：《海洋测绘》2015年第3期8-10,15,共4页Hydrographic Surveying and Charting

基　　金：国家测绘地理信息公益性行业科研专项(201412012)

摘　　要：基于POM模式的"blending"同化法,构建了天津港及附近海域分辨率为1'×1'、13个主分潮的精密潮汐模型。构建过程中重点关注水深数据格网化与潮汐模型的精度评估。水深数据格网化过程基于尽量扩大覆盖范围、分辨率与水深数据相匹配以及保持岸线形状基本不变等原则。潮汐数值模拟过程采用分批同化T/P点与验潮站,实现对潮汐模型精度的可靠评估。经估计,在天津港附近的9个主分潮RSS在10cm内。A regional tidal model for 13 main constituents adjacent to Tianjin Port with a spatial resolution of 1 ＇×1＇ is established by the blending assimilation method based on POM.The establishment process focuses on the depth data gridding and the tidal model precision estimating.The depth data gridding process subjects to the principles of expanding coverage as widely as possible, matching resolution with depth data and keeping shorelines basically unchanged.The tidal parameters of T/P and gauge stations are assimilated by three steps for estimating the accuracy of the tidal model.The comparison shows that the RSS of nine main constituents is less than 10cm.

关 键 词：海洋测绘 潮汐模型 POM模式 同化 水深格网 

分 类 号：P229[天文地球—大地测量学与测量工程]