GIA重力与垂直位移理论近似关系的实测验证  

Validation of the Approximate Linear Relation Between Gravity and Vertical Deformation

作　　者：贾路路[1,2] 相龙伟[2] 雒燕飞 

机构地区：[1]地壳运动监测工程研究中心,北京100036 [2]中国科学院测量与地球物理研究所大地测量与地球动力学国家重点实验室,湖北武汉430077 [3]中测新图(北京)遥感技术有限责任公司,北京100039

出　　处：《海洋测绘》2014年第5期13-15,23,共4页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(41204013;41304057);大地测量与地球动力学国家重点实验室开放基金(SKLGED2013-2-4-E)

摘　　要：利用位于冰川均衡调整(GIA)近场的北美和北欧地区绝对重力和GPS垂直位移观测数据,得到GIA重力与垂直位移的实测比值为0.145±0.019μGal/mm,验证了Wahr关于GIA重力与垂直位移的近似理论线性关系,发现理论值与实测值的相对差异为6.2%。研究结果可为利用该理论近似线性关系的相关研究提供有意义的参考。Based on absolute gravity data and GPS vertical deformation data in North America and North European which are in near field of glacial isostatic adjustment （GIA）,the observed ratio （0.145±0.019μGal/ mm） of gravity versus vertical deformation derived from GIA is obtained.And Wahr＇ s approximate linear relation about GIA gravity and uplift is validated.The relative difference between Wahr＇ s theoretical ratio and observed ratio is 6.2％.The results can provide meaningful references to related researches which use the approximate relation.

关 键 词：绝对重力 GPS 冰川均衡调整 线性关系 

分 类 号：P229[天文地球—大地测量学与测量工程]