搜索结果: 1-15 共查到“知识库 水文测量”相关记录621条 . 查询时间(2.641 秒)
依据“中瑞大坝安全加固项目”成果，简要归纳了瑞士的大坝安全法规和安全管理模式，深入剖析了瑞士的大坝安全监控机制；总结分析了我国水库大坝的安全管理机制和安全监控体系；在此基础上，对比分析了两国水库大坝安全监控机制的异同，认为瑞士已形成了职责明确、实用高效的大坝安全监控机制，我国已建立的大坝安全监控机制与瑞士相似，但安全管理力度不足，主动监控意识不强，实际效果相差甚远，对此，我国可借鉴瑞士大坝安全监控...
VERSATILE MOBILE AND STATIONARY LOW-COST APPROACHES FOR HYDROLOGICAL MEASUREMENTS
flood monitoring geo-crowd sourcing image-to-geometry intersection time lapse image analysis smartphone application low-cost camera system Raspberry Pi
2018/6/4
In the last decades, an increase in the number of extreme precipitation events has been observed, which leads to increasing risks for flash floods and landslides. Thereby, conventional gauging station...
Hydrographic surveys of ports and harbours are undertaken primarily to support the safe navigation of vessels. Port authorities are charged with maintaining and developing their harbours with regard t...
Ellipsoidally Referenced Surveying for Hydrography
Ellipsoidally Referenced Surveying for Hydrography
2016/1/22
One of the most significant issues in hydrography today is using the ellipsoid as the vertical reference for surveying measurements. High-accuracy GNSS is used to position (vertically) hydrographic da...
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...
Practical use of SRTM digital elevation dataset in the urban-watershed modeling
SRTM-DEM Watershed modeling Hydrological model HEC-GeoHMS
2015/8/14
The advent of satellite-based elevation dataset acquired by Shuttle Radar Topography Mission (SRTM) made new and novel techniques possible to model hydrological process in midsize to large scale water...
Location of Fraction-Saturated Areas in Watershed Using Empirically Calculated Topographical Index
VSA Water balance critical values shallow soils Shivalik region of India India
2015/8/14
In engineering practice, simple methods are important for predicting runoff from watersheds particularly for flood forecasting and water balance calculations. In the present study, it is illustrated t...
Numerical Modelling of Contaminant Transport Hydrodynamics
runoff contamination environment numerical modelling real-time simulation forecasting hydrodynamic management
2015/8/14
Modelling of contaminant transport on watersheds is a problem of concern with regard to the protection of water ecosystems. This paper presents a numerical model, using the finite element method, to s...
Groundwater Flow Model and Particle Track Analysis for Selecting Water Quality Monitoring Well Sites,and Soil Sampling Profiles
Mechanic villages heavy metals modelling pollution studies Imo River basin
2015/8/14
Researchers often use only surface drainage (imperical method) as a tradition to locate sites for installation of water quality monitoring wells, and soil sampling profile for pollution studies in urb...
A Method for Quantifying Stream Network Topology over Large Geographic Extents
stream network topology upstream cell count landscape ecology digital elevation models
2015/8/14
An understanding of stream network topology is necessary for a landscape-level perspective of stream hydrology and ecology. We present a method for quantifying stream network topology that overcomes c...
Derivation of Instantaneous Unit Hydrograph for a sub-basin using Linear Geomorphological Model and Geographic Information Systems
Geographic Information System GIS Linear Geomorphological Model LGM GIUH
2015/8/14
Rainfall is converted into runoff and reaches the river and it becomes river flow. Geomorphological Instantaneous Unit Hydrograph (GIUH) based approach, which uses the geomorphologic parameters, is us...
Regional Dimensionless Rating Curves to Estimate Design Flows and Stages
Bankfull geometry Flow-frequency relationship Dimensionless rating curve Bankfull discharge Ungaged watersheds
2015/8/14
Dimensionless rating curves to estimate flows and stages of different return periods are investigated in this study for streams located in the Red River Basin of Minnesota and North Dakota, USA. Bankf...
Evaluating Groundwater Potential of a Hard-rock Aquifer Using Remote Sensing and Geophysics
Groundwater remote sensing geophysics well-yield
2015/8/14
Water constitutes one of the sensitive environmental parameters of the hydrological processes. Therefore, the study of water resources exploitation sustainable to the environment is important. Water r...
Watershed Modeling Using GIS Technology: A Critical Review
Geographic Information System GIS hydrologic processes modeling watershed sensing
2015/8/14
Understanding and managing water resource problems involves complex processes and interactions within the watershed surface and subsurface. The imposition of total maximum daily load (TMDL) regulation...