Satellite remote sensing of river discharge during snowmelt

EPSRC：Samuel Valman：EP/S023577/1该项目将开发一个利用卫星图像监测河流流量的系统。该方法将重点测量魁北克融雪季节的流量。这个融雪期传统上是最难测量流量的时期，传统的方法孤立于沿河的单个点，在大流量事件时容易出错。这一新方法将使用来自“立方体”卫星的PlanetScope星座的数据，这些卫星能够收集每天研究河流的高分辨率图像。将开展实地工作，在统计上将河流流量与从卫星图像获得的河流宽度测量值联系起来；这一统计模型随后将能够在每天的时间尺度上高精度地预测卫星测量的河流宽度的流量。这一产品的预期产出包括一篇研究文章，详细介绍了将用于监测易发洪水河流的河流流量的方法和开发基于网络的界面。

EPSRC : Samuel Valman : EP/S023577/1This project will develop a system to monitor river water discharge using satellite imagery. The method will focus on measuring discharge during the snowmelt season in Québec. This snowmelt period is traditionally the most difficult in which to measure discharge, with traditional methods isolated to single points along the river and prone to error during high flow events. This new method will use data from the PlanetScope constellation of "cubesat" satellites which enable the collection of daily high-resolution images of study rivers. Fieldwork will be conducted to statistically link in-river discharge to river width measurements obtained from satellite imagery; this statistical model will subsequently allow the prediction of discharge from satellite-measured river width on daily timescales and high accuracy. Expected outputs of this product include a research article detailing the method and the development of a web-based interface that will be used for monitoring river discharge in flood-prone rivers.