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A Method for Extracting Stream Channel Flow Paths from LiDAR Point Cloud Data
LiDAR Point Cloud Streams
2015/8/14
Traditional methods of delineating stream channel networks use gridded raster elevation data. Direct use of LiDAR point clouds, without first creating a raster or grid, could improve efficiency and ac...
Case Studies of Applying Urban Surface Data in Evaluating Stormwater Management Issues
Urban runoff impervious surfaces suspended solids stormwater management non-point source pollution
2015/8/13
Pollutant load estimation is often required to evaluate stormwater management issues associated with water quality and urban development. Land use (e.g. residential, commercial) is commonly employed a...
Modeling and Understanding the Relationship between Vegetation and Rainfall of a Tropical Watershed using Remote Sensing Data and GIS
NDVI rainfall modelling calibration verification
2015/8/13
A model is developed to understand the relationship between satellite-derived NDVI and rainfall data in a large tropical catchment. Two Fourier-based modeling techniques with a seasonal component, viz...
Evaluation of the Wetland Mapping Methods using Landsat ETM+ and SRTM Data
wetlands remote sensing mapping delineation automated methods semi-automated methods Limpopo river basin
2015/8/13
Overarching goal of this paper was to evaluate automated and semi-automated methods of mapping wetlands using Landsat ETM+ and SRTM data. Automated methods consisted of: (a) slope derived from SRTM, (...
Performances of Stochastic Approaches in Generating Low Streamflow Data for Drought Analysis
monthly-minimum daily discharge stochastic model ARIMA Thomas-Fiering
2015/8/11
This study analyzed the monthly-minimum daily discharge data of each month from three gauge stations on Cekerek Stream for forecasting using stochastic approaches. Initially non-parametric test (Mann-...
Improving overland flow routing by incorporating ancillary road data into Digital Elevation Models
Watershed Delineation Road Geographic Information System GIS Flow Direction Digital Elevation Model DEM Hydrological Modeling
2015/8/6
Roads, ditches, and culverts influence hydrological and geomorphological processes significantly. However, most hydrological models continue to rely solely on regional digital elevation models (DEMs) ...
CHARACTERIZING URBAN VOLUMETRY USING LIDAR DATA
Built Volume Urban indicators LiDAR, Census data Density, Land Planning
2014/4/24
Urban indicators are efficient tools designed to simplify, quantify and communicate relevant information for land planners. Since
urban data has a strong spatial representation, one can use geograp...
TERRESTRIAL LASER SCANNER DATA TO SUPPORT COASTAL EROSION ANALYSIS: THE CONERO CASE STUDY
Coastal erosion Terrestrial Laser Scanner Digital Terrain Model Landform curvature Feature extraction Risk assessment
2014/4/24
In this work a detailed TLS survey was carried out in summer 2012, in the Conero Regional Park (Marche, province of Ancona),
along the “spiaggia San Michele” and “spiaggia Sassi Neri”. These areas p...
ISTSOS, SENSOR OBSERVATION MANAGEMENT SYSTEM: A REAL CASE APPLICATION OF HYDRO-METEOROLOGICAL DATA FOR FLOOD PROTECTION.
:SOS sensors observations services OGC monitoring
2014/4/24
istSOS (Istituto scienze della Terra Sensor Observation Service) is an implementation of the Sensor Observation Service standard
from Open Geospatial Consortium (OGC). The development of istSOS star...
Ensemble modelling of nitrogen fluxes: data fusion for a Swedish meso-scale catchment
Ensemble modelling nitrogen fluxes data fusion
2010/12/22
Model predictions of biogeochemical fluxes at the landscape scale are highly uncertain, both with respect to stochastic (parameter) and structural uncertainty. In this study 5 different models (LASCAM...
Actual daily evapotranspiration estimated from MERIS and AATSR data over the Chinese Loess Plateau
Actual daily evapotranspiration MERIS AATSR data Chinese Loess Plateau
2010/2/1
The Chinese Loess Plateau is located in the north of China and has a significant impact on the climate and ecosystem evolvement over the East Asian continent. Estimates of evapotranspiration (ET) at a...
Migration from tabular to spatial data analysis techniques for water management in Idaho
Migration tabular spatial data analysis techniques water management
2009/12/7
The State of Idaho has insufficient water supplies in many basins. Competition for water has spawned a complex system of administering water rights. Administration of water rights has historically bee...
Despite almost five decades of activity on the computer modelling of input–output relationships, little general agreement has emerged on appropriate indices for the goodness-of-fit of a model to a set...
A multiobjective approach to cost effective long-term groundwater monitoring using an elitist nondominated sorted genetic algorithm with historical data
multiobjective approach effective long-term groundwater monitoring sorted genetic algorithm
2009/12/4
This study presents a methodology for quantifying the tradeoffs between sampling costs and local concentration estimation errors in an existing groundwater monitoring network. The method utilizes hist...
A GIS methodology for the analysis of weather radar precipitation data
AGIS methodology analysis weather radar precipitation data
2009/12/4
A GIS multi-component module was developed within the ArcView GIS environment for processing and analysing weather radar precipitation data. The module is capable of: (a) reading geo-reference radar d...