Quantitative characterization and elevation estimation of Lake Lahontan shoreline terraces from high-resolution digital elevation models

Effects of Digital Elevation Models (DEM) Spatial Resolution on Hydrological Simulation

Digital Elevation Model is one of the most important data for watershed modeling whit hydrological models that it has a significant impact on hydrological processes simulation. Several studies by the Soil and Water Assessment Tool (SWAT) as useful Tool have indicated that the simulation results of this model is very sensitive to the quality of topographic data. The aim of this study is evaluati...

Automatic Generation of High Resolution Urban Zone Digital Elevation Models

Assessment Effect of the Spatial Resolution of Digital Elevation Model on Daily Discharge Estimation of Arazkuseh Watershed Using SWAT Model

The spatial quality of the Digital Elevation Model (DEM) has a great effect on the Soil and Water Assessment Tool (SWAT) semi-distributed model. The purpose of this study was to evaluate the effect of spatial accuracy of three DEMs with spatial resolutions of 10, 50 and 200 m on the results of daily discharge simulation in the Arazkuseh subwatershed located in Gorganroud watershed, Golestan pro...

Preliminary Results on High Accuracy Estimation of Shoreline Change Rate Based on Coastal Elevation Models

The shoreline is one of the most important features on the Earth’s surface, representing a critical indicator of coastal evolution and vulnerability for any Coastal Geographic Information System. In this sense, a new methodological proposal for high accuracy shoreline mapping is outlined along the present work. Briefly, this methodology starts from a coastal elevation model (CEM) obtained by Li...

Characterization of Catchments Extracted From Multiscale Digital Elevation Models

In this paper, the characterization of catchments extracted from multiscale digital elevation models (DEMs) is performed. First, the lifting scheme is employed to generate multiscale DEMs. The catchments extracted from the generated multiscale DEMs are then characterized based on their numbers. A power law relationship is derived between the number of extracted catchments and the kernel size. T...