大地测量与地球动力学2013，Vol.33Issue(4)：133-136,4.
新的月球大地水准面模型与参考三轴水准椭球
A NEW SELENOID MODEL AND REFERENCE TRIAXIAL LEVEL ELLIPSOID
摘要
Abstract
A new selenoid (lunar geoid) is derived using the lunar gravity model CEGM02 and topography model LRO_LTM02,which approximates the physical surface as closely as possible.The estimated gravity potential value of this selenoid is 2 822 327.8 _+ 16.2 m2/s2,denoted as W0 in usual.A triaxial level ellipsoid whose surface gravity potential equals W0 above is calculated and used as a reference ellipsoid,and its semi-major axis,polar flattening,equator flattening and longitude of semi-major axis are 1 737 462 m,1/2 579,1/6 863 and-76.8 ",respectively.Based on this reference ellipsoid,the gravity decreases about 60 × 10-5 m/s2 from the equator to the poles,while the variation along the equator is about 25 × 10-5 m/s2.The selenoid undulations are in the range of -325.9 m to 389.1 m.关键词
月球大地水准面/参考三轴水准椭球/月球重力场/月球地形/基准Key words
selenoid / reference triaxial level ellipsoid / lunar gravity/ lunar topography / reference分类
天文与地球科学引用本文复制引用
丰海,李建成,李大炜,刘志勇..新的月球大地水准面模型与参考三轴水准椭球[J].大地测量与地球动力学,2013,33(4):133-136,4.基金项目
国家自然科学基金(40637034 （）
41074014 （）
41210006) （）
