Locating Manning-based Satellite Gauging Reach for River Discharge Estimation from Remotely Sensed Imagery

River discharge is critical for understanding river hydrological condition and water resource management. With the advance of earth observation technologies, estimating river discharge through remote sensing using Manning's Equation has become more and more popular for filling the gaps in gauging observations. However, finding a Manning-based Satellite Gauging Reach (MSGR) that can successfully transfer satellite signals into river discharge based on the Equation is not easy and lacks proper guidance. Theredore, we provide a practical approach for locating MSGR.<br> The manuscript is currently under review by Water Resources Research.<br> This repositry is the data for reproducing the figures in our manuscript. This repositry consists of four part. They are the corresponding data and results at MSGR, CR_FSE, CR_SCT locations, and elevation values along river centerline for calculating riverbed slope. MSGR: Manning-based Satellite Gauging Reach<br> CR_FSE: comparison reach with unsatisfactory FSE<br> CR_SCT: comparison reach with unsatisfactory SCT<br> FSE: Fluctuation degree of surface water extent<br> SCT: Stability of Channel Terrain

河道流量对于认知河流水文状况与开展水资源管理而言至关重要。随着地球观测技术的进步，基于曼宁公式（Manning's Equation）的遥感河道流量估算方法愈发受到青睐，用以填补实测水文观测数据的空白。然而，依托该公式筛选出可成功将卫星观测信号转化为河道流量的曼宁式卫星测流河段（Manning-based Satellite Gauging Reach，缩写MSGR）并非易事，且缺乏系统的指导方案。为此，我们提出了一种用于定位MSGR的实用方法。
本论文目前正由《Water Resources Research》期刊审稿中。
本仓库存储了用于复现本论文图表的相关数据，共分为四个部分：MSGR测点的配套数据与结果、CR_FSE测点的配套数据与结果、CR_SCT测点的配套数据与结果，以及用于计算河床坡度的河道中心线沿线高程值。
术语说明：
MSGR：曼宁式卫星测流河段（Manning-based Satellite Gauging Reach）
CR_FSE：地表水域范围波动程度（Fluctuation degree of surface water extent，缩写FSE）不达标的对比河段
CR_SCT：河道地形稳定性（Stability of Channel Terrain，缩写SCT）不达标的对比河段
FSE：地表水域范围波动程度
SCT：河道地形稳定性