Using coherent Doppler lidar to estimate river discharge

George David Emmitt; Christopher O'Handley; Gary D. Spiers

doi:10.1117/12.417100

13 February 2001 Using coherent Doppler lidar to estimate river discharge

George David Emmitt, Christopher O'Handley, Gary D. Spiers

Proceedings Volume 4153, Lidar Remote Sensing for Industry and Environment Monitoring; (2001) https://doi.org/10.1117/12.417100
Event: Second International Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment, and Space, 2000, Sendai, Japan

Abstract

A major component of the hydrologic cycle is river discharge. Within the continental USA, the USGS operates nearly 7000 streamgaging stations. For much of the rest of the world major river discharge is poorly, sparsely or not monitored at all. In preparation for a shuttle demonstration of coherent Doppler lidar wind observing, it was determined that the assumption of a zero velocity for the surface return was probably not valid for a large fraction ofthe globe. Ocean currents, river currents, blowing sand or dust near the surface, or even swaying trees violate that assumption. However, what appeared as a confounder for shot to shot velocity calibration may actually be useful information to oceanographers and those involved with river flow. This paper describes the current status of efforts to determine both the usefulness of an observation of the river surface velocity and the feasibility of obtaining such information from a space-based Doppler lidar.

Citation Download Citation

George David Emmitt, Christopher O'Handley, and Gary D. Spiers "Using coherent Doppler lidar to estimate river discharge", Proc. SPIE 4153, Lidar Remote Sensing for Industry and Environment Monitoring, (13 February 2001); https://doi.org/10.1117/12.417100

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