• 责任者：Feng Wei (Department of Surveying and Mapping ; Southwest Jiaotong University ; Chengdu 610031 ; China) ; Huang Dingfa
• 刊名：Chinese Journal of Geophysics
• 出版年：2013
• 卷期：56(9)
• 关键词：强震 ; strong earthquakes ; 地壳运动 ; crustal movement
• 页码：p.3022-3028
• 图表：illus., 16 refs.
• 分类号：0500
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

     Due to the short lasting time of the ground motion and the correlation of the doubledifferenced （DD） residuals,a new high-rate GPS ground motion monitoring method is proposed based on DD residual modeling for strong shake.Firstly,the DD residual is modeled with epochs of data before the earthquake,then the model is used to predict the DD residual after the earthquake start,and finally the displacement is accomplished with the predicted residual in short time scale.1 Hz GPS data from a static baseline about 1100 km and 94 sites in El Mayor-Cucapah Mw7.2 earthquake is tested,and the experimental results show that the positioning precision of N,E and U can reach 6 mm,6 mm and 13 mm for the static data,and the results derived from earthquake data coincide with the actual situation well,within 5 predicted minutes.