搜索结果: 46-60 共查到“知识库 水文测量”相关记录621条 . 查询时间(2.264 秒)
APPLICATION OF A RATIONAL MODEL IN GIS FOR FLOOD RISK ASSESSMENT IN ACCRA, GHANA
Flood Hazard Mapping GIS Integration
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2014/11/12
Accra has been experiencing periodic flooding that affect properties and lives. The government
seeing the dangers involved has commissioned institutions such as Ministry of Works and
Housing, Town a...
Integrating Water Quality Modeling with GIS to Determine Management Strategies: A Study of Fort Gordon, GA
water quality modeling AGNPS (Agricultural Non-Point Source) GRASS (Geographic Resources Analysis Support System), GIS, land management, water resources
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2014/11/12
Land managers of the Fort Gordon military installation in Augusta, GA were in need of a tool which
would predict the effects to water quality produced by changes in land use as well as predict
impac...
A COMPREHENSIVE GIS-BASED MODELING APPROACH FOR PREDICTING NUTRIENT LOADS IN WATERSHEDS
GIS watershed modeling TMDL nonpoint source pollution
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2014/11/12
A comprehensive, GIS-based modeling approach was developed to enable accurate
prediction of nutrient loads in watersheds throughout the state of Pennsylvania; particularly those
watersheds for which...
A ROBUST PCT METHOD BASED ON COMPLEX LEAST SQUARES ADJUSTMENT METHOD
Complex Least Squares Polarimetric interferometric SAR (POLInSAR) Polarization Coherence Tomography (PCT) Vegetation height inversion
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2014/4/24
Polarization Coherence Tomography (PCT) method has the good performance in deriving the vegetation vertical structure. However,
Errors caused by temporal decorrelation and vegetation height and grou...
CHARACTERIZING URBAN VOLUMETRY USING LIDAR DATA
Built Volume Urban indicators LiDAR, Census data Density, Land Planning
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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...
USING DECISION TREES FOR ESTIMATING MODE CHOICE OF TRIPS IN BUCAIZMIR
Transportation Mode Choice Data Mining Classification Data Structure
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2014/4/24
Decision makers develop transportation plans and models for providing sustainable transport systems in urban areas. Mode Choice is
one of the stages in transportation modelling. Data mining techniqu...
A SHARED DATABASE OF UNDERGROUND UTILITY LINES FOR 3D MAPPING AND GIS APPLICATIONS
GIS relational database underground utility lines
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2014/4/24
For the purpose of facility management it is very important to have detailed and up-to-date databases of underground utility lines,
but such data are not always available with adequate accuracy. Hen...
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
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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...
PHOTOGRAMMETRIC MONITORING OF GLACIER MARGIN LAKES
Photogrammetric network image sequence processing disaster monitoringp
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2014/4/24
The growing number of glacial margin lakes that have developed due to glacier retreat, have caused an increase of dangerous Glacial
Lake Outburst Floods (GLOFs) in several regions over the last deca...
ANTHROPIC RISK ASSESSMENT ON BIODIVERSITY
Hazards Impact analysis Ecosystem Environment Spatial Infrastructures Temporal Decision support
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2014/4/24
This paper presents a methodology for risk assessment of anthropic activities on habitats and species. The method has been
developed for Veneto Region, in order to simplify and improve the quali...
MULTI-TEMPORAL LAND USE ANALYSIS OF AN EPHEMERAL RIVER AREA USING AN ARTIFICIAL NEURAL NETWORK APPROACH ON LANDSAT IMAGERY
Ephemeral River area Multi-temporal Land Use LANDSAT Imagery
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2014/4/24
This paper proposes a change detection analysis method based on multitemporal LANDSAT satellite data, presenting a study
performed on the Lama San Giorgio (Bari, Italy) river basin area. Based o...
ISTSOS, SENSOR OBSERVATION MANAGEMENT SYSTEM: A REAL CASE APPLICATION OF HYDRO-METEOROLOGICAL DATA FOR FLOOD PROTECTION.
:SOS sensors observations services OGC monitoring
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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...
为了定量评价人类活动对河道径流的影响，应用变化范围法（RVA法）评估了三峡水库运行后对长江中下游水文情势的影响。利用三峡水库以下6个水文站1961~1985年和2003~2008年的日均流量作为建库前后的资料进行IHA指标计算，分析了32个水文改变指标的中值及离差系数。结果表明，三峡水库运行后，在不同的丰枯水期，对长江中下游的影响程度是不同的，且影响分布沿河流流向逐渐减弱。总体来说，三峡水库运行对...
Potential of high-resolution detection and retrieval of precipitation fields from X-band spaceborne synthetic aperture radar over land
high-resolution detection retrieval precipitation fields X-band spaceborne synthetic
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2011/3/15
X-band Synthetic Aperture Radars (X-SARs), able to image the Earth's surface at metric resolution, may provide a unique opportunity to measure rainfall over land with spatial resolution of about few ...
Self-potential investigations of a gravel bar in a restored river corridor
Self-potential investigations gravel bar restored river corridor
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2011/3/15
Self-potentials (SP) are sensitive to water fluxes and concentration gradients in both saturated and unsaturated geological media, but quantitative interpretations of SP field data may often be hinder...