水准面(Geoid)是指静止的水面,它是受地球表面重力场影响而形成的、特别的、一个处处与重力方向垂直的连续曲面,也是一个重力场的等位面。设想一个静止的海水面扩展到陆地部分,就成为大地水准面。
n. water level
misc. level plane ; level surface
大地水准面 [测] geoid ; geoidal surface ; geoid surface ; mean sea level
大地水准面高 [测] geoidal height ; geoidal undulation ; geoid height
大地水准面波动 geoid undulation
大地水准面起伏 undulation of the geoid ; geoid undulation
地貌水准面 geomorphic levels ; geomorphological level surface
大地水准面翘曲 geoid warping
高程水准面 elevation datum
起始水准面 initial level
大地水准面地平圈 geoidal horizon
其中与平均海平面重合的面就是大地水准面。
Which coincide with the mean sea level surface is the geoid.
讨论了表面垂直位移和重力变化对大地水准面高变化的影响。
The effects of surface vertical displacements and gravity changes upon the geoidal height variation have been also discussed.
本次制作的地球水准面模型在绘制地球地貌时也将会被用来参考。
The geoid is also used as a reference surface from which to map the topographical features on the planet.
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