https://scholars.lib.ntu.edu.tw/handle/123456789/598490
標題: | Adaptive block modeling of time dependent variations of datum reference points in a tectonically active area | 作者: | Chou C.-Y Han J.-Y. JEN-YU HAN |
關鍵字: | Block Model;Euler Motion;Geodetic Datum;Global Navigation Satellite System (GNSS);Least-squares Collocation | 公開日期: | 2021 | 來源出版物: | Survey Review | 摘要: | Although a dynamic or semi-dynamic datum has been adopted in some countries, it remains a challenge if a long-term stable datum is to be established in a tectonic active area. This study presents an approach to realistically reflect the time dependent behaviors of ground reference points while maintaining the long-term stability of a datum. An adaptive approach coupled with the Euler motion model is proposed for dividing an area into blocks. A least-squares collocation is then applied for modeling the residual velocities in each block. A case study using the data from 375 continuously operated GNSS stations in Taiwan is presented. It is illustrated that the complex surface kinematics in this region can be divided into three blocks. Significant reductions up to 64% of residual velocities were obtained. This shows that a stable datum can be established in a region with active and complicated surface kinematics by implementing the proposed. ? 2021 Survey Review Ltd. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110499232&doi=10.1080%2f00396265.2021.1949194&partnerID=40&md5=49bb25dad5309476da36604bfcedc955 https://scholars.lib.ntu.edu.tw/handle/123456789/598490 |
ISSN: | 00396265 | DOI: | 10.1080/00396265.2021.1949194 |
顯示於: | 土木工程學系 |
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