In this paper, a new idea that combines Quasi-Accurate Detection of gross errors (QUAD) with discontinuous deformation positive analysis, is brought forward to divide the regional active blocks. The method can improve...In this paper, a new idea that combines Quasi-Accurate Detection of gross errors (QUAD) with discontinuous deformation positive analysis, is brought forward to divide the regional active blocks. The method can improve the demarcation of active blocks for areas lacking with observation data and offer a new train of through for the complete study of the regional deformation of active blocks. In addition, using the Sichuan-Yunnan area as example, the practice process of the method is introduced briefly.展开更多
The process for dividing the different deformation trend blocks with displacement observations includes three steps. They are datum detection, block scope told part and anomalous deformations detection in blocks. The ...The process for dividing the different deformation trend blocks with displacement observations includes three steps. They are datum detection, block scope told part and anomalous deformations detection in blocks. The three steps are implemented by Quasi-Accurate Detection(QUAD) in the paper. In the previous two steps, the prelimi-nary selection for Quasi-Accurate Observations (QAOs) is key. The preliminary selection is according to the size of deformation displacement for datum detection and according to the direction of deformation for block scope told part. At last through an example, each implementation process is introduced simply and the detection effect of QUAD is compared with that of the robust estimation (Huber) and the statistic test. The result indicates that the three steps can be implemented successfully with QUAD and that the anomalous deformations in blocks can be detected, but the steps of the datum detection and block scope told part are failed by robust estimation. The detec-tions of three steps are failure by the statistic test. The results show that the QUAD has the virtues that the location of gross errors is much accurate and the breakdown point is higher than the other two methods.展开更多
基金This research was sponsored by the Joint EarthquakeScience Foundation (603002) and 104011)the sub-project of the 10th"Five-Year"Key Research Program ofCEA,entitled"Variation patterns of tectonic deformation and strain accumulation state in the key areas on the Chinesecontinent".
文摘In this paper, a new idea that combines Quasi-Accurate Detection of gross errors (QUAD) with discontinuous deformation positive analysis, is brought forward to divide the regional active blocks. The method can improve the demarcation of active blocks for areas lacking with observation data and offer a new train of through for the complete study of the regional deformation of active blocks. In addition, using the Sichuan-Yunnan area as example, the practice process of the method is introduced briefly.
基金State Natural Science Foundation of China (No. 40074003) and Project of Chinese Academy of Sciences (No. KZCX2-106).
文摘The process for dividing the different deformation trend blocks with displacement observations includes three steps. They are datum detection, block scope told part and anomalous deformations detection in blocks. The three steps are implemented by Quasi-Accurate Detection(QUAD) in the paper. In the previous two steps, the prelimi-nary selection for Quasi-Accurate Observations (QAOs) is key. The preliminary selection is according to the size of deformation displacement for datum detection and according to the direction of deformation for block scope told part. At last through an example, each implementation process is introduced simply and the detection effect of QUAD is compared with that of the robust estimation (Huber) and the statistic test. The result indicates that the three steps can be implemented successfully with QUAD and that the anomalous deformations in blocks can be detected, but the steps of the datum detection and block scope told part are failed by robust estimation. The detec-tions of three steps are failure by the statistic test. The results show that the QUAD has the virtues that the location of gross errors is much accurate and the breakdown point is higher than the other two methods.
