M_f和M_m波固体潮Love数k_2的确定——来自空间大地测量的结果  

DETERMINATION OF THE LOVE NUMBER k-2 OF WAVES M_f AND M_m IN SOLID EARTH TIDE ——THE RESULTS FROM SPACE GEODESY

作　　者：吴斌[1] 彭碧波[1] 郝兴华[1] 

机构地区：[1]中国科学院测量与地球物理研究所动力大地测量开放实验室,武汉430077

出　　处：《天文学报》2000年第3期306-311,共6页Acta Astronomica Sinica

基　　金：国家自然科学基金! (批准号 :4 9874 0 0 4 ;4 9774 2 2 9和 4 963 4 1 4 0 );国家攀登计划"现代地壳运动和地球动力学研究"资助

摘　　要：初步探讨用日长和卫星轨道摄动方法研究半月潮Mf 和月潮Mm 的Love数k2 .结果表明 ,日长方法给出k2 =0 .30 32 +i0 .0 0 2 8(Mf) ,0 .30 2 6+i0 .0 0 1 2 (Mm) ,卫星轨道摄动方法为k2 =0 .30 83-i0 .0 1 0 0 (Mf) ,0 .30 1 4-i0 .0 0 1 0 (Mm) ,并与理论固体潮计算结果较为相符 .另外 ,上述结果更接近滞弹地球模型计算的结果 ,因此精确地测定长期潮Love数将对固体潮理论和地幔滞弹性提供重要的结束 .In this paper, it is discussed how to use two different methods, i.e. the length of day (LOD) method and satellite orbit perturbation (SOP) method to study the long period solid Earth tide Love number k 2. The results show that, the LOD method yields k 2= 0.3032 + i0.0028(M f),0.3026+ i0.0012(M m); and the SOP method gives k 2=0.3083- i0.0100(M f),0.3014- i 0.0010( M m). These values agree well with those of the recent solid Earth tide theories. Furthermore, the results are closer to the inelastic solid Earth tide model than the elastic model. This manifests that precise determination of long period Love number can provide an important constraint to theories of Earth tide and Earth mantle inelasticity.

关 键 词：LOVE数 日长 卫星轨道摄动 地球 固体潮 

分 类 号：P183.5[天文地球—天文学]