水汽对大气重力负荷效应的影响  

INFLUENCE OF WATER VAPOR ON ATMOSPHERIC GRAVITY LOADING EFFECT

作　　者：蒋维[1,2] 罗少聪[1,3] 孙和平 

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重点实验室,武汉430077 [2]中国科学院研究生院,北京100049 [3]武汉大学地球空间环境与大地测量教育部重点实验室,武汉430079

出　　处：《大地测量与地球动力学》2011年第3期124-126,共3页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(40774052;40730316;40904019);中国科学院二期知识创新项目(KZCX2-YW-133);武汉大学测绘基金(04-01-05)

摘　　要：通过构建水汽影响模型,并以武汉超导重力观测台站为例,根据1998年武汉地区每日两次的无线电探空数据,精确计算水汽对重力观测的影响数值。解算结果表明,水汽对武汉重力观测站的影响可达1.6×10-8m s-2,由此可见,精密重力观测中不能忽视水汽的作用。The air contains water vapor which has influences on air density.Therefore,when we correct the atmospheric loading effect of the gravity observations,we need to consider the influence of water vapor.Former researches did not analyze the influence of water vapor quantitatively.We construct a water vapor influence model and take Wuhan superconducting gravity observation for example,according to the radio sounding data in Wuhan district,calculate the influence of water vapor accurately.The result shows that the influence of water vapor to gravity observation can reach to 1.6×10-8ms-2,which means that the influence of water vapor on the precise gravity survey should not be ignored.

关 键 词：大气负荷效应 饱和水汽压 比气体常数 大气密度 无线电探空 

分 类 号：P312[天文地球—固体地球物理学]