Title: Joining the mainland geoid and the ocean geoid by the finite element method
Abstract: The mainland geoid is derived mainly from land gravity data and GPS measurements,and the ocean geoid is derived mainly from the satellite altimeter data.The difference between mainland geoid and ocean geoid along their merge boundary area is caused because of the sparse gravity data and the poor quality of satellite altimeter data.Taking account of the physical characteristics of geoid,and according to the equations of mathematical physics of geoid in a local area,we transform the mainland-ocean merge geoid problem into the Laplace boundary value problem.Then,the ideas of mathematics joining the mainland geoid and the ocean geoid along their merge boundary area is discussed based on the finite element method,and a relevant mathematical model is given in the paper.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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