River planform dynamics in the Beas and Sutlej catchments, India, 1847 and 1989-2018

The data was produced as part of a study to determine human impacts on river planform change within the context of short- and long-term river channel dynamics. To this end, the Himalayan Sutlej-Beas River system was used as a case study to (i) systematically assess changes in river planform characteristics over centennial, annual, seasonal, and episodic timescales; (ii) connect the observed patterns of planform change to human-environment drivers and interactions; and (iii) conceptualise these geomorphic changes in terms of timescale-dependant evolutionary trajectories. The dataset was derived from historic maps (1847-1850) and remote sensing data (Landsat over a 30-year period). It comprises post monsoon season wet river area annually 1989-2018, post monsoon season active gravel bars annually 1989-2018, active channel area (maximum extent between 1989-2018), active channel width annually 1989-2018, active channel width assessed from historic map (1847–1850), and the Anabranching index, annually 1989-2018. The work was supported by the Natural Environment Research Council (Grant NE/S01232X/1). Full details about this dataset can be found at https://doi.org/10.5285/f7aada06-7352-44c0-988e-2f4b31690189本数据集源自一项旨在探究短期与长期河道动力过程背景下人类活动对河道平面形态变化影响的研究。为此，研究以喜马拉雅萨特累季-比斯河流域作为案例研究对象，完成三项核心任务：（1）系统评估百年、年际、季节及偶发事件尺度下的河道平面形态特征变化；（2）将观测到的平面形态变化模式与人类-环境驱动因子及交互作用建立关联；（3）基于时间尺度依赖的演化轨迹框架，对上述地貌变化进行概念化阐释。 本数据集源自1847-1850年的历史地图与30年时间序列的遥感影像（Landsat）数据，包含1989-2018年每年季风季后的河道水域面积、活动砾石滩面积，1989-2018年的最大活动河道范围面积、年际活动河道宽度，基于1847-1850年历史地图估算的活动河道宽度，以及1989-2018年的年际分汊指数（Anabranching index）。 本研究由英国自然环境研究理事会（Natural Environment Research Council，资助编号：NE/S01232X/1）资助。 本数据集的完整详细信息可访问：https://doi.org/10.5285/f7aada06-7352-44c0-988e-2f4b31690189