scholarly journals A New Approach to Calculate the Water Exploitation Index (WEI+)

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3227
Author(s):  
Stefano Casadei ◽  
Francesco Peppoloni ◽  
Arnaldo Pierleoni
Keyword(s):  
Web Gis ◽  
Return Flow ◽  
Freshwater Resources ◽  
New Approach ◽  
Country Level ◽  
Management Plans ◽  
Water Exploitation ◽  
Environment Agency ◽  
Gis System ◽  
Exploitation Index

The Water Exploitation Index (WEI), or withdrawal ratio, is an indicator of water scarcity, which has been updated into its WEI+ form by the Committee of Experts of the European Commission. In calculating the total abstraction of fresh water, this indicator also includes the possible return flow and management rules. The demand for freshwater and long-term freshwater resources are both necessary to calculate the WEI+. These values are not easy to assess at basin or sub-basin level and, for this reason, WEI values are generally calculated at the country level. This paper introduces a new approach to calculate the WEI+, with the purpose of extending its use to basin and sub-basin levels. The methodology is based on flow duration curve estimation, which evaluates freshwater resources, and a Web-GIS system that evaluates water abstractions distribution. This approach allows for the assessment of locally stressed areas in the hydrographic network and could provide a fundamental step toward more comprehensive regional water resources management plans. The new methodology is tested in some sub-basins of the Upper Tiber River Basin (Italy). These results contribute to the analysis of water withdrawals sustainability, based on the policy of the European Environment Agency, which is aimed toward the development of a proactive approach for reducing water stress.

scholarly journals Method to Extend Operationability of Web-Gis Based Marine Services Using SSE Platform

2015 ◽  
Vol 22 (4) ◽  
pp. 21-26
Author(s):  
K. Drypczewski ◽  
A. Stepnowski ◽  
K. Bruniecki
Keyword(s):  
Web Service ◽  
Satellite Imagery ◽  
Fire Detection ◽  
Earth Observation ◽  
Web Gis ◽  
Service Support ◽  
Advantages And Disadvantages ◽  
New Applications ◽  
True Color ◽  
Gis System

AbstractEarth Observation (EO) products are widely used by geospatial society. Over the last years a number of new applications of satellite imagery were proposed. This led to an increased interest in EO products, not only from researchers but also from companies and individuals. The authors constitute the essential part of the team that created the marine, web-GIS system - SafeCity GIS - for dissemination of data obtained from a 1.5 metre HRPT-MetOp satellite ground receiving station. To increase the operationability of the system the authors successfully attempted to broaden the offered functionality by integration with Service Support Environment (SSE). Due to this, EO products for the Pomeranian Region are served as web-services; amongst them there are True Color imagery, meteorological, algae monitoring and fire-detection services. The authors present the created solution for web service support for GIS system based on Service Support Environment and discuss its advantages and disadvantages.

scholarly journals Uncertainty in Irrigation Return Flow Estimation: Comparing Conceptual and Physically-Based Parameterization Approaches

Water ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1125
Author(s):  
Jung-Hun Song ◽  
Younggu Her ◽  
Soonho Hwang ◽  
Moon-Seong Kang
Keyword(s):  
Water Cycle ◽  
Agricultural Watershed ◽  
Return Flow ◽  
Resources Management ◽  
Flow Estimation ◽  
Physically Based ◽  
Management Plans ◽  
Irrigation Return Flow ◽  
The Relationship ◽  
Improve Reliability

Irrigation return flow (RF) is a critical component of the water cycle in an agricultural watershed, influencing the flow regime of downstream river. As such, it should be accurately quantified when developing water resources management plans and practices. Although many studies have proposed ways to quantify RF, uncertainty in RF estimates has not been determined to improve reliability and credibility. This study examines how conceptual (CON) and physically-based (PHY) parameterization approaches affect RF uncertainty. Results showed that PHY had a smaller amount of RF uncertainty compared to CON, as parameters of the PHY approach could be regulated based on their physical meanings. This study also found that the application of constraints created based on the relationship between the conceptual parameter and physical characteristics of irrigated plots could effectively reduce RF uncertainty made using the CON approach. This study demonstrates the benefits of the physically-based parameterization approach and the application of constraints on conceptual parameters to RF estimation.

scholarly journals AUTOMATION OF MORPHOMETRIC MEASUREMENTS FOR PLANETARY SURFACE ANALYSIS AND CARTOGRAPHY

2016 ◽  
Vol XLI-B4 ◽  
pp. 431-433
Author(s):  
A. A. Kokhanov ◽  
A.Y. Bystrov ◽  
M. A. Kreslavsky ◽  
E. V. Matveev ◽  
I. P. Karachevtseva
Keyword(s):  
Web Gis ◽  
Statistical Characteristics ◽  
Shape Estimation ◽  
Topographic Roughness ◽  
Morphological Studies ◽  
Second Derivatives ◽  
Software Modules ◽  
Small Crater ◽  
Height Fields ◽  
Gis System

For automation of measurements of morphometric parameters of surface relief various tools were developed and integrated into GIS. We have created a tool, which calculates statistical characteristics of the surface: interquartile range of heights, and slopes, as well as second derivatives of height fields as measures of topographic roughness. Other tools were created for morphological studies of craters. One of them allows automatic placing of topographic profiles through the geometric center of a crater. Another tool was developed for calculation of small crater depths and shape estimation, using C++ programming language. Additionally, we have prepared tool for calculating volumes of relief features from DTM rasters. The created software modules and models will be available in a new developed web-GIS system, operating in distributed cloud environment.

scholarly journals AUTOMATION OF MORPHOMETRIC MEASUREMENTS FOR PLANETARY SURFACE ANALYSIS AND CARTOGRAPHY

2016 ◽  
Vol XLI-B4 ◽  
pp. 431-433 ◽  
Author(s):  
A. A. Kokhanov ◽  
A.Y. Bystrov ◽  
M. A. Kreslavsky ◽  
E. V. Matveev ◽  
I. P. Karachevtseva
Keyword(s):  
Web Gis ◽  
Statistical Characteristics ◽  
Shape Estimation ◽  
Topographic Roughness ◽  
Morphological Studies ◽  
Second Derivatives ◽  
Software Modules ◽  
Small Crater ◽  
Height Fields ◽  
Gis System

For automation of measurements of morphometric parameters of surface relief various tools were developed and integrated into GIS. We have created a tool, which calculates statistical characteristics of the surface: interquartile range of heights, and slopes, as well as second derivatives of height fields as measures of topographic roughness. Other tools were created for morphological studies of craters. One of them allows automatic placing of topographic profiles through the geometric center of a crater. Another tool was developed for calculation of small crater depths and shape estimation, using C++ programming language. Additionally, we have prepared tool for calculating volumes of relief features from DTM rasters. The created software modules and models will be available in a new developed web-GIS system, operating in distributed cloud environment.

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