摘要
根据重力场的频谱理论,本文建立了重力异常阶方差的经验模型,并导出了外空扰动引力场与地面数据分辨率及其覆盖范围之间的关系,从理论上研究和揭示了各种地形类别下外空场的传播特性。为验证理论分析结果,还应用重力异常逐级余差方法,以实际资料计算并分析了外空扰动引力场的传播特性。结果表明,理论分析和实际计算得到的结论完全一致。
A new empirical model of degree-variance of gravity anomaly is firstly formed in this paper.And then,on the basis of this model and the spectral analysis theory of gravity field,the relations of the resolving power of the observation at the earth's surface,their coverage and the elevation of space point affected by gravity field are derived,so that the propagation properties,which are suitable for all topographic conditions,of disturbing gravity field outside the earth are theoretically revealed.To check the result from theoretical analysis,the method of degree-by-degree residuals of gravity anomalies is also used to compute disturbing gravity outside the earth.The results indicate that the conclusions from theoretical analysis and actual computation are unanimous.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第4期484-493,共10页
Chinese Journal of Geophysics
关键词
扰动引力场
频谱分析
阶方差
传播特性
重力测量
Disturbing gravity field
Spectral analysis
Degree variance
Propagation Property.
