摘要
建立高精度的地壳运动速度场模型是实现区域大地基准动态维持,反映地面形变,保障基础设施工程建设的重要途径。针对点位分布密集、精度可靠和多年连续重复观测等准确获取区域地壳运动速度场模型的关键问题,通过对山东及周边省份2010年1月—2015年11月连续近6a的130座连续运行参考站点在ITRF2008框架下进行处理,获取时间序列。首次完整建立了山东省地壳运动速度场模型。通过模型分析表明:水平方向,山东省地壳整体向东南方向运动,平均速率为34.3mm/a,运动方向为SE110.25°;垂直方向,鲁中山区及胶东半岛地区地壳较为稳定,鲁北、鲁西等华北平原地区存在显著沉降,最大沉降量位于广饶漏斗区,年沉降量81.6mm/a。
Establishing the high-precision crustal movement velocity fields model is the important method to dynamically maintain the regional geodetic datum, reflect the land subsidence and guarantee the infrastructure construction. Aiming at key problems of establishing the model in densely distribution of the stations, reliable accuracy and continuous observation for years, this paper deals with serial 6 a data of 130 reference stations in Shandong provincial cors network during the period of Jan. 2010 to Nov. 2015, and gets the coordinate time series under ITRF2008, It was to be first we establishes the crustal move- ment velocity fields model of Shandong Province completely. By means of analyzing the model, a conclu- sion is that in horizontal direction, the crust moves towards the southeast, the average speed is 34.3 mm/a and the direction is SEll0.25°; in vertical direction, the crust in mountain areas of Shandong provincial mid lands and Shandong peninsula are stable, north and west areas of Shandong province in the plain of Norlh China have the obvious land subsidence, the dominant subsidence appears in Guangrao funnel area, the annual sedimentation is 81.6 mm/a.
出处
《测绘科学》
CSCD
北大核心
2017年第7期70-75,共6页
Science of Surveying and Mapping
基金
教育部中央高校基本科研业务费专项资金项目
中国科学院遥感与数字地球研究所项目
四川省应急测绘保障与地质灾害监测工程技术研究中心开放研究基金项目(K2014B003)
国家博士后基金项目(2011M501400)
