Dynamically and economically updating the National Elevation Datum with the assistance of InSAR: A case study in North China Plain
Land subsidence significantly impacts the accuracy of the National Elevation Datum in China. In order to solve this issue, a dynamic and economical way was proposed to update the National Elevation Datum with the assistance of InSAR in the North China Plain, which served as the research area. Moreov...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-05-01
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| Series: | Geodesy and Geodynamics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674984724001149 |
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| author | Wenke Zheng Zhaofeng Du Xiaomin Zhou Cong Yue Shengtao Qin |
| author_facet | Wenke Zheng Zhaofeng Du Xiaomin Zhou Cong Yue Shengtao Qin |
| author_sort | Wenke Zheng |
| collection | DOAJ |
| description | Land subsidence significantly impacts the accuracy of the National Elevation Datum in China. In order to solve this issue, a dynamic and economical way was proposed to update the National Elevation Datum with the assistance of InSAR in the North China Plain, which served as the research area. Moreover, the GNSS result was used to correct the InSAR result for the vertical deformation field, which has a relatively unified deformation reference. By integrating the vertical deformation field with the national elevation control point, an analysis and evaluation of changes in the National Elevation Datum were conducted. In addition, a regional remeasurement scheme was formulated to achieve dynamic updates and maintenance of the National Elevation Datum on a regional scale. Through data acquisition and processing, we successfully improved reliability within the main subsidence areas for future use. As a result, updating the elevation values utilize a regional update method, and a dynamic and economical technical process to update the National Elevation Datum is shown in the study. |
| format | Article |
| id | doaj-art-05deb1f171714448b6efa05ddeee6f44 |
| institution | OA Journals |
| issn | 1674-9847 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Geodesy and Geodynamics |
| spelling | doaj-art-05deb1f171714448b6efa05ddeee6f442025-08-20T01:52:55ZengKeAi Communications Co., Ltd.Geodesy and Geodynamics1674-98472025-05-0116331032010.1016/j.geog.2024.09.004Dynamically and economically updating the National Elevation Datum with the assistance of InSAR: A case study in North China PlainWenke Zheng0Zhaofeng Du1Xiaomin Zhou2Cong Yue3Shengtao Qin4The First Geodetic Surveying Brigade, Ministry of Natural Resources, Xi'an 710054, ChinaCorresponding author.; The First Geodetic Surveying Brigade, Ministry of Natural Resources, Xi'an 710054, ChinaThe First Geodetic Surveying Brigade, Ministry of Natural Resources, Xi'an 710054, ChinaThe First Geodetic Surveying Brigade, Ministry of Natural Resources, Xi'an 710054, ChinaThe First Geodetic Surveying Brigade, Ministry of Natural Resources, Xi'an 710054, ChinaLand subsidence significantly impacts the accuracy of the National Elevation Datum in China. In order to solve this issue, a dynamic and economical way was proposed to update the National Elevation Datum with the assistance of InSAR in the North China Plain, which served as the research area. Moreover, the GNSS result was used to correct the InSAR result for the vertical deformation field, which has a relatively unified deformation reference. By integrating the vertical deformation field with the national elevation control point, an analysis and evaluation of changes in the National Elevation Datum were conducted. In addition, a regional remeasurement scheme was formulated to achieve dynamic updates and maintenance of the National Elevation Datum on a regional scale. Through data acquisition and processing, we successfully improved reliability within the main subsidence areas for future use. As a result, updating the elevation values utilize a regional update method, and a dynamic and economical technical process to update the National Elevation Datum is shown in the study.http://www.sciencedirect.com/science/article/pii/S1674984724001149InSARLand subsidenceNational Elevation DatumDynamic updateRegional remeasurement |
| spellingShingle | Wenke Zheng Zhaofeng Du Xiaomin Zhou Cong Yue Shengtao Qin Dynamically and economically updating the National Elevation Datum with the assistance of InSAR: A case study in North China Plain Geodesy and Geodynamics InSAR Land subsidence National Elevation Datum Dynamic update Regional remeasurement |
| title | Dynamically and economically updating the National Elevation Datum with the assistance of InSAR: A case study in North China Plain |
| title_full | Dynamically and economically updating the National Elevation Datum with the assistance of InSAR: A case study in North China Plain |
| title_fullStr | Dynamically and economically updating the National Elevation Datum with the assistance of InSAR: A case study in North China Plain |
| title_full_unstemmed | Dynamically and economically updating the National Elevation Datum with the assistance of InSAR: A case study in North China Plain |
| title_short | Dynamically and economically updating the National Elevation Datum with the assistance of InSAR: A case study in North China Plain |
| title_sort | dynamically and economically updating the national elevation datum with the assistance of insar a case study in north china plain |
| topic | InSAR Land subsidence National Elevation Datum Dynamic update Regional remeasurement |
| url | http://www.sciencedirect.com/science/article/pii/S1674984724001149 |
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