One of the main obstacles is caused by various expression of depthdatum 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。
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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 depthdatum and tidal level in the area.
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.