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Open AccessArticle

Application of Multi-Source Data Fusion Method in Updating Topography and Estimating Sedimentation of the Reservoir

1
School of Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China
2
Department of Geography and Philosophy, University of Minnesota-Duluth, Duluth, MN 55812, USA
*
Author to whom correspondence should be addressed.
Water 2020, 12(11), 3057; https://doi.org/10.3390/w12113057
Received: 5 September 2020 / Revised: 21 October 2020 / Accepted: 26 October 2020 / Published: 30 October 2020
The underwater terrain of a reservoir can experience significant changes due to the effects of erosion and siltation during decades of operation. Therefore, existing topographic data no longer reflect current reservoir terrains and need to be updated. In this paper, we propose a fast and economical method for updating the topography of a reservoir. According to multi-source data fusion, we effectively integrated sonar sounding data, cartographic data, and manual measurement data to update and reconstruct the bottom topography of a reservoir in Northeast China. By comparing the updated topography with the measured elevation, the average error of the simulation results is only 0.56%, which shows that the updated topography can accurately reflect the actual topography of the reservoir. Furthermore, by using the surface volume tool in ArcGIS, we developed the original and updated the elevation and volume curves of the reservoir. Finally, the amount of silting and its distribution in the reservoir were obtained by calculating the difference between the original and updated elevation and volume curves. The results show that the total sedimentation volume in the researching reservoir is about 4.3 million m3, which is mainly concentrated in the areas with an elevation below 50 m and above 60 m. View Full-Text
Keywords: terrain update; multi-source data fusion; reservoir topography; distribution of siltation terrain update; multi-source data fusion; reservoir topography; distribution of siltation
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MDPI and ACS Style

Liu, Y.; Xu, S.; Zhu, T.; Wang, T. Application of Multi-Source Data Fusion Method in Updating Topography and Estimating Sedimentation of the Reservoir. Water 2020, 12, 3057. https://doi.org/10.3390/w12113057

AMA Style

Liu Y, Xu S, Zhu T, Wang T. Application of Multi-Source Data Fusion Method in Updating Topography and Estimating Sedimentation of the Reservoir. Water. 2020; 12(11):3057. https://doi.org/10.3390/w12113057

Chicago/Turabian Style

Liu, Yu; Xu, Shiguo; Zhu, Tongxin; Wang, Tianxiang. 2020. "Application of Multi-Source Data Fusion Method in Updating Topography and Estimating Sedimentation of the Reservoir" Water 12, no. 11: 3057. https://doi.org/10.3390/w12113057

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