Abstract Producing accurate and rapid geomorphic surveys is a key issue for the growing scientific and operational area of physical river restoration. A geodetic survey using 3-D modelling (lasergrammetry, photogrammetry, tacheometry) was combined with a geomorphic survey (RFID bedload tracking, survey of grain size, geomorphic units evolution and geometrical changes) in order to monitor morphodynamic adjustments in a restored anastomosing channel of the Upper Rhine. On this basis, functioning indicators were developed to survey morphological changes at different spatio-temporal scales. Because Structure from Motion (SfM)-photogrammetry is a fast and low-cost method able to produce high-resolution point clouds, the method is particularly well-suited for monitoring complex fluvial environments that have been subject to rapid and intense changes. A hybrid method was developed to complement bank point-clouds with bathymetric data obtained by Total Station leveling. By using the Multiscale Model to Model Cloud Comparison method (M3C2), volumes of erosion-deposition were determined for all surveys. Combining geodetic and geomorphic approaches resulted in a detailed assessment of channel adjustments. This was achieved by creating a set of indicators (e.g., related to vertical and longitudinal evolutions, sediment budget, etc.) that allowed us to both characterize geomorphic adjustments and identify morphodynamic limiting factors. These indicators may be used in the future in a wide range of restoration surveys.

中文翻译：

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结合大地测量和地貌方法监测恢复的侧通道：来自莱茵河上游的反馈

摘要 进行准确、快速的地貌调查是日益扩大的河流物理修复科学和业务领域的关键问题。使用 3-D 建模（激光测量、摄影测量、速度测量）的大地测量与地貌测量（RFID 床载荷跟踪、粒度测量、地貌单位演变和几何变化）相结合，以监测恢复的吻合通道中的形态动力学调整。上莱茵河。在此基础上，开发了功能指标，用于调查不同时空尺度的形态变化。由于运动结构 (SfM)-摄影测量是一种能够生成高分辨率点云的快速且低成本的方法，因此该方法特别适合监测经历了快速和剧烈变化的复杂河流环境。开发了一种混合方法，用全站仪水平测量获得的测深数据补充岸边点云。通过使用多尺度模型到模型云比较方法 (M3C2)，确定了所有调查的侵蚀沉积量。结合大地测量和地貌方法可以对通道调整进行详细评估。这是通过创建一组指标（例如，与垂直和纵向演化、沉积物收支等相关）来实现的，这些指标使我们能够表征地貌调整并确定形态动力学限制因素。这些指标将来可能会用于广泛的恢复调查。通过使用多尺度模型到模型云比较方法 (M3C2)，确定了所有调查的侵蚀沉积量。结合大地测量和地貌方法可以对通道调整进行详细评估。这是通过创建一组指标（例如，与垂直和纵向演化、沉积物收支等相关）来实现的，这些指标使我们能够表征地貌调整并确定形态动力学限制因素。这些指标将来可能会用于广泛的恢复调查。通过使用多尺度模型到模型云比较方法 (M3C2)，确定了所有调查的侵蚀沉积量。结合大地测量和地貌方法可以对通道调整进行详细评估。这是通过创建一组指标（例如，与垂直和纵向演化、沉积物收支等相关）来实现的，这些指标使我们能够表征地貌调整并确定形态动力学限制因素。这些指标将来可能会用于广泛的恢复调查。) 这使我们能够表征地貌调整并确定形态动力学限制因素。这些指标将来可能会用于广泛的恢复调查。) 这使我们能够表征地貌调整并确定形态动力学限制因素。这些指标将来可能会用于广泛的恢复调查。