One of the main obstacles is caused by various expression of depth datum for hydrographic data integration.
由于沿海各深度基准面的差异，使得海洋测绘数据综合处理存在一定的困难。
In this paper, the observed land surface height data and tidal data in the Yellow River delta foreland area are used to describe the variations in depth datum and tidal level in the area.
通过黄河三角洲前沿陆地高程的变化和验潮获得的资料，介绍了黄河三角洲前沿深度基准面的变化和潮位变化情况。
In most cases, subsequent depth measurements, such as those made during the well completion phase, are corrected to the wellhead datum that is based on drillers depth.
在大多数情况下，随后的测量(如在完井阶段所进行的测量)都被校正至基于司钻深度的井口基准面。
Inversion result only has some errors when datum interface depth is inaccurate.
界面基准理深取得不准时，反演结果只产生有限的误差。
By the computational method of carbonation depth, the carbonation depth and the carbonized time relations are obtained. The concrete carbonation depth according to the testing datum is forecasted.
由碳化深度的计算方法，得到了碳化深度与碳化时间的关系，根据实验数据对混凝土的碳化深度进行了预测。
Currently available vernier depth gauges are simple in measuring function, especially in measuring precisely the no touchable directly depth of the measuring datum plane.
现有游标深度尺的功能单一，对测量基准面无法直接触碰的深度尺寸难以精确测量。
The results were as follows. The horizontal datum and two-pass statics method gave minimum depth error on time section.
试验结果表明，采用水平基准面两步法静校正，时间剖面反演深度误差最小；
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.
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。
The precondition of RG line being as datum of time-depth conversion is that the RG line is equivalent to the smooth line of surface elevation.
RG线作为时深转换基准面的前提是RG线等效于地表高程的平滑线。
The precondition of RG line being as datum of time-depth conversion is that the RG line is equivalent to the smooth line of surface elevation.
RG线作为时深转换基准面的前提是RG线等效于地表高程的平滑线。
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