网格低潮面模型构建及精度分析  

Construction and precision analysis of grid low water model

作　　者：李宁[1,2] 田震[1] 张立华[1] 陈秋 

机构地区：[1]海军大连舰艇学院海洋测绘系,辽宁大连116018 [2]海军装备研究院,北京100080 [3]海军机关汽车队,北京100080

出　　处：《测绘科学》2014年第12期15-19,共5页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41171349);国家863计划资助项目(2012AA12A406)

摘　　要：文章基于网格潮汐模型构建了网格低潮面(深度基准面)模型,分析了网格低潮面模型的精度影响因子,验证了网格低潮面模型的可行性和有效性。试验表明,网格低潮面模型精度优于20cm,在离岸较远的海区精度更高;基于网格低潮面模型的低潮面确定方法可以避免基准面确定需要设立验潮站获取(同步)潮位观测数据、沿岸低潮面(深度基准面)定义和算法存在差异以及基准面传递技术存在局限性的问题,尤其适合不易设立验潮站的海区的低潮面确定。The grid low water model was constructed based on the grid tide model in the paper, and influence factors on the precision were analyzed, then the feasibility and the validity of the model were validated. Experimental results demonstrated that the model precision is higher than 20cm, and is better in the sea area away shore the model could help to avoid the problems that the depth datum along the coast of China may apply different definitions and arithmetics, depth datum calculation needs （synchronous） tide observation data, and transfer algorithms have limitation; and the method would be especially fit to calculate the low water value in the sea area where tidal gauge is difficult to set up.

关 键 词：海洋测绘 低潮面模型 潮汐模型 理论最低潮面 

分 类 号：P229[天文地球—大地测量学与测量工程]