深度基准面

并在此基础上对渤海湾海区最低天文潮面进行了拟合，建立了该区域的无缝深度基准面模型。

Based on the above , LAT in Bohai Rim area is established by surface fitting as the seamless chart datum model of this area .

海图深度基准面是海道测量，海洋工程勘察、设计和施工的重要基础数据之一。

Chart datum is one of the important basic data of hydrography , investigation , design and construction of harbor , channel and other ocean engineerings .

采用B样条函数曲面拟合法建立了两个相邻海域的理论深度基准面模型，再用多项式拟合法实现了两个海域的拼接。

B-spline function is used to construct models of lowest normal low water of two adjacent waters , then two models is spliced by polynomial fitting .

研究了深度基准面模型的建立方法，主要利用物理海洋学的海洋数值模式来进行解算。

The methods to build depth datum modeling were studied .

临时验潮站深度基准面确定技术的改进

Improving Technology on Identification Depth Datum About Temporary Tide Station

长江口海图深度基准面换算关系研究

Relationships among depth datum levels in the Yangtze Estuary

半日潮区理论深度基准面回归分析初探

A tentative regression analysis of lowest normal low water in the semidiurnal tide areas

长江口深度基准面查考

Sounding Datum Examining for Yangtze River Port

浅谈深度基准面变化对天津港水深值的影响

Discussion of the Effecting of the Bathymetric Data by the Changing of the Depth Datum in Tianjin Port

基于最小二乘潮位拟合传递法的数学模型，对短期验潮站海图深度基准面确定方法进行了研究。

The influence factors on precision of chart datum values from the least square fitting model were discussed .

黄河水下三角洲前沿深度基准面及潮位变化分析研究

Analysis and Study of Variations in Depth Datum and Tidal Level in the Yellow River Submerged Delta Foreland Area

整体结构高程基准面采用理论深度基准面。主要包括三个部分：软基处理、围堰、填料。

The overall structure of the height datum using the theoretical depth datum . , Mainly includes three parts : the soft foundation treatment , cofferdam , packing .

海图深度基准面用离散验潮站点上深度基准面值表示，通过分区插值扩展到整个海域。

Chart datum is expressed by values of depth datum of discrete tide stations , and is extended to the entire area by the method of partition interpolation .

在海道测量中，一般采用当地深度基准面作为一定海区内深度的参考基准面，我国使用的是理论深度基准面。

Generally , local depth datum is used as reference datum in a sea area for hydrographic surveys . The ordinance datum is lowest normal low water in China .

近代历史海图数学基础的转换；浙江海区近代历史海图的平面坐标改正和深度基准面改正。

The transformation on mathematical basis of modern historic chart , the correction of the horizontal coordinate and depth data on the charts for the waters off Zhejiang coast are elaborated .

改正数方程和改正数分布图不仅为使用历史海图的科技人员提供了基础性资料，而且为历史海图深度基准面转换的研究提供了一种新的方法。

The correction equations and scatter diagrams not only provide basic data for technologists who use the historical chart , but also provide a new method for the study of transformation of sounding data on historical chart .

简述了深度基准面的概念，分析了海图深度基准面不统一造成的误差及其形成原因。

This paper indicates the definition of the chart datum and analyzes errors and reasons caused by differing from the chart datum .

本文还给出了根据（静校正的）CMP基准面计算地表圆滑面的方法，统一了深度域中速度谱、时深转换和深度偏移的基准面。

A method for deriving the smoothed ground surface from CMP datum of static correction is given to form a common datum for velocity spectrum , time-depth conversion and depth migration in depth domain .

当盲孔深度允差在微米量级，且其深度是相对某基准面而言时，这种深度测量一直是当前精密测量中的一个难点。

When the allowed error of blind hole depth is on a micron level , the measurement of the depth is very difficult in the precise measurement field at present .