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2010•Coastal EngineeringRequires access

Selection of the Seamless Vertical-datum Surface of Chinese Sea Area

Jie Li

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Abstract

The definitions of ellipsoid,geoid,mean sea level,and chart datum are introduced.The reasons for the tidal datum and the geoid being unsuitable as the seamless vertical datum are analyzed systematically.Also the rationality and feasibility for using ellipsoid as seamless vertical datum are analyzed.It is recommended to choose the WGS84 ellipsoid as the seamless vertical datum of Chinese sea area.

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What this paper is about

The definitions of ellipsoid,geoid,mean sea level,and chart datum are introduced.The reasons for the tidal datum and the geoid being unsuitable as the seamless vertical datum are analyzed systematically.Also the rationality and feasibility for using ellipsoid as seamless vertical datum are analyzed.It is recommended to choose the WGS84 ellipsoid as the seamless vertical datum of Chinese sea area.

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Available abstract

The definitions of ellipsoid,geoid,mean sea level,and chart datum are introduced.The reasons for the tidal datum and the geoid being unsuitable as the seamless vertical datum are analyzed systematically.Also the rationality and feasibility for using ellipsoid as seamless vertical datum are analyzed.It is recommended to choose the WGS84 ellipsoid as the seamless vertical datum of Chinese sea area.

Key concepts: Geodetic datum, Geoid, Geodesy, Geology, Ellipsoid, Undulation of the geoid, Sea level, Geophysics

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