华南沿海地区的深度基准面

Depth Datum Planes in the Coastal Areas of South China

华南沿海地区，由于历史原因，目前存在的深度基准面繁多，关系复杂。为了解其含义、来源、历史沿革及其变化规律，本文作了较为详细的介绍，并进行了初步的推算。对海洋工程和规划、设计、施工等，具有重要的实际意义。

At present,there are many depth datum planes with complicated relations in the coastal areas of South Cnina. In order to have a good understanding of their meanings,origins,evolutions and patterns of change,a detailed introdution is given and a preliminary calculation is performed.