Vladimir J. Alarcon

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This paper investigates the effect of DEM resolution on the delineation of three catchments in Mississippi: Jourdan and Wolf river catchments (sub-basins of the Saint Louis Bay watershed in the Gulf coast) and Luxapalilla watershed. The paper also discusses the implications of different watershed segmentations on parameter values exported to HSPF. Two(More)
The development of web-based tools for visualization and processing of hyper-spectral images has been slow. Memory and processing capabilities of personal computers may have precluded the development of web-based tools. However, fast access to remote databases, increasing microprocessors' speed, and grid portals that provide interconnection between remote(More)
This paper investigates the effect of land use and digital elevation models spatial resolution and scale on the simulation of stream flow in two coastal watersheds located in the Mississippi Gulf Coast (USA). Four elevation datasets were used: USGS DEM, NED, NASA’s SRTM and IFSAR (300, 30, 30, and 5 meter resolution, respectively). Three land use datasets(More)
All articles published in Journal of Hydrogeology & Hydrologic Engineering are the property of SciTechnol, and is protected by copyright laws. Copyright © 2013, SciTechnol, All Rights Reserved. International Publisher of Science, Technology and Medicine Estimation and Propagation of Parameter Uncertainty in Lumped Hydrological Models: A Case Study of HSPF(More)
Analytical shaded relief is commonly used for visualization of Digital Elevation Models (DEMs). Sometimes, the quality of unaltered analytical shaded relief can be lacking for identification of streams and water divides. Hydroshading [1] is a technique that provides enhanced capabilities of visualization of hydrologically-meaningful topographical features.(More)
In this study, SEDDEER (Sediment Deposition and Erosion), a stand-alone sediment and contaminant model which simulates one water box and the underlying multiple sediment bed layers, was incorporated into Water Quality Analysis Simulation Program (WASP7.4). WASP7.4 toxic module (TOXI7) was modified to include SEDDEER to develop WASP_SEDDEER model. Tests were(More)
This chapter documents the use of Moderate Resolution Imaging Spectroradiometer land use/land cover (MODIS 12 Q1), NASA-LIS generated precipitation and evapo-transpiration (ET), and Shuttle Radar Topography Mission (SRTM) datasets (in conjunction with standard land use, topographical and meteorological datasets) as input to hydrological models routinely(More)