非构造形变对区域网GPS垂直形变的影响  

Effects of non-tectonic crustal deformation on vertical velocity of network GPS in China

作　　者：朱良玉[1,2] 王庆良[1,2] 蒋锋云[2] 郑申宝[2] 

机构地区：[1]中国地震局地质研究所,北京100029 [2]中国地震局第二监测中心,西安710054

出　　处：《测绘科学》2014年第9期49-53,共5页Science of Surveying and Mapping

基　　金：中国综合地球物理场观测-鄂尔多斯地块周缘地区(201208009);地震行业科研专项GNSS系列产品在监测预报中的应用(201208006)

摘　　要：文章定量分析了积雪、土壤水、海洋非潮汐3种非构造因素对中国大陆典型GPS连续站和区域网流动站垂直形变的影响特征;逐点计算了这些非构造因素对区域网GPS垂直形变的影响量级,得到经过非构造形变改正的中国大陆2009-2011GPS垂直速度场;并将通过荷载修正后的GPS垂直速度场与通过水准数据获得的中国大陆长期垂直速度场相比较。结果表明:修正后的区域网GPS垂直形变场能更加准确可靠地描述地壳的垂直运动。The effects of non-tectonic crustal deformation, including snow cover, soil moisture, non- tidal ocean, on vertical velocity of continuous GPS stations and network GPS in China were calculated in the paper. And the magnitude of the effects of snow cover, soil moisture and non-tidal ocean were esti- mated point by point. Then the reliable velocity field in 2009-2011 of China was obtained. At last, the com- parison between the GPS velocity and the leveling velocity was carried out. The result showed that the net- work GPS vertical velocity would be more reliable than the no-modified velocity to depict the real crust ver- tical deformation.

关 键 词：地壳运动 非构造形变 GPS垂直形变 区域网GPS 

分 类 号：P228.41[天文地球—大地测量学与测量工程]