大地水准面

In this paper we develop models to compute the geopotential of an equipotential surface in terms of the geopotential coefficient model, e.g.

提出了利用全球重力场模型和GPS/水准资料计算局部高程基准相对全球大地水准面垂直偏差的 2种不同方法。

Geoid is the equipotential surface that would be assumed by the sea surface in the absence of tides, water density variations, currents and atmospheric effects.

大地水准面指与平均海表面最接近的地球等势面，它反映了地球内部质量和密度分布的不均匀特性。

Geoid: The sea-level equipotential surface to which the direction of gravity is everywhere perpendicular.

大地水准面：重力方向处处铅垂的海水等位面。

The main purpose of physical geodesy is to ascertain the outer Earth gravity field and geoid.

物理大地测量的主要目标是确定地球外部重力场和大地水准面。

Which coincide with the mean sea level surface is the geoid.

其中与平均海平面重合的面就是大地水准面。

Use multi-faceted function to be legitimate seems fitting to the geoid, get higher accuracy.

利用多面函数拟合法来拟合似大地水准面，可以获得较高的精度。

The conception of crustal isostasy produces a great effect to the geo-scientific research; especially take an important role in the studies of Geodesy and Geodynamics.

地壳均衡的概念对地学的研究有着极大的影响，特别是在大地测量学和地球动力学中发挥了重要作用。均衡重力大地水准面异常作为研究海底地形、地壳结构、构造及地震活动的重要手段，已被科学家广泛应用。

In general the accuracy of geoidal heights, as given by spirit levelling, much exceeds that of any other system.

一般说来，水准测量测出的大地水准面高程的精度，远远超过任何其它方法的精度。

Deflection of the vertical ; astro gravimetric leveling ; geoid ; CCD automatic astrometer ; method with single pole

垂线偏差；天文重力水准；大地水准面； CCD自动天体测量仪；单极坐标法

The tests of WHU-GM-05 series are performed by multi-comparisons, which include the comparisons between the model series and several analogous international geopotential models including EIGEN-GRACE series and GGM02S with respect to the corresponding degree variances and geoidal heights, and comparisons of the model geoidal heights with GPS leveling in the area of U.S.

基于两颗GRACE卫星的观测数据，采用本文导出的严密能量积分方法求解得到120阶的GRACE地球重力场模型，命名为WHU-GM-05；将WHU-GM-05模型与国际上同类重力场模型EIGEN-GRACE系列和GGM02S分别在阶方差和大地水准面高等方面作了比较，并与美国和中国的部分地区GPS水准观测值进行了精度分析。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失