Evaluating the potential for measuring river discharge from space Export

@article{bjerklie2003a, abstract = {Numerous studies have demonstrated the potential usefulness of river hydraulic data obtained from satellites in developing general approaches to tracking floods and changes in river discharge from space. Few studies, however, have attempted to estimate the magnitude of discharge in rivers entirely from remotely obtained information. The present study uses multipleregression analyses of hydraulic data from more than 1000 discharge measurements, ranging in magnitude from over 200,000 to less than 1 m3/s, to develop multi-variate river discharge estimating equations that use various combinations of potentially observable variables to estimate river discharge. Uncertainty analysis indicates that existing satellite-based sensors can measure water-surface width (or surface area), water-surface elevation, and potentially the surface velocity of rivers with accuracies sufficient to provide estimates of discharge with average uncertainty of less than 20\%. Development and validation o multivariate rating equations that are applicable to the full range of rivers that can be observed from satellite sensors, development of techniques to accurately estimate the average depth in rivers from stage measurements, and development of techniques to accurately estimate the average velocity in rivers from surface-velocity measurements will be key to successful prediction of discharge from satellite observations.}, author = {Bjerklie, David M. and Dingman, Lawrence S. and Vorosmarty, Charles J. and Bolster, Carl H. and Congalton, Russell G.}, citeulike-article-id = {328975}, journal = {Journal of Hydrology}, keywords = {analysis, channel, data, discharge, estimation, hydraulic, hydraulics, monitoring, multi-variate, multiple, of, ratings, regression, river, rivers, satellite}, pages = {17--38}, posted-at = {2005-09-21 17:36:29}, priority = {0}, title = {Evaluating the potential for measuring river discharge from space}, volume = {278}, year = {2003} }

TY - JOUR ID - bjerklie2003a L3 - citeulike-article-id:328975 N2 - Numerous studies have demonstrated the potential usefulness of river hydraulic data obtained from satellites in developing general approaches to tracking floods and changes in river discharge from space. Few studies, however, have attempted to estimate the magnitude of discharge in rivers entirely from remotely obtained information. The present study uses multipleregression analyses of hydraulic data from more than 1000 discharge measurements, ranging in magnitude from over 200,000 to less than 1 m3/s, to develop multi-variate river discharge estimating equations that use various combinations of potentially observable variables to estimate river discharge. Uncertainty analysis indicates that existing satellite-based sensors can measure water-surface width (or surface area), water-surface elevation, and potentially the surface velocity of rivers with accuracies sufficient to provide estimates of discharge with average uncertainty of less than 20\%. Development and validation o multivariate rating equations that are applicable to the full range of rivers that can be observed from satellite sensors, development of techniques to accurately estimate the average depth in rivers from stage measurements, and development of techniques to accurately estimate the average velocity in rivers from surface-velocity measurements will be key to successful prediction of discharge from satellite observations. JF - Journal of Hydrology EP - 38 TI - Evaluating the potential for measuring river discharge from space VL - 278 SP - 17 KW - analysis KW - channel KW - data KW - discharge KW - estimation KW - hydraulic KW - hydraulics KW - monitoring KW - multi-variate KW - multiple KW - of KW - ratings KW - regression KW - river KW - rivers KW - satellite AU - Bjerklie, David AU - Dingman, Lawrence AU - Vorosmarty, Charles AU - Bolster, Carl AU - Congalton, Russell PY - 2003/// ER -