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.

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 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.

Accelerated reproduction of 2-D periodic waves

2021 ◽  
Vol 71 (3) ◽  
pp. 309-322
Author(s):  
Dmitry Chalikov
Keyword(s):  
Water Waves ◽  
Good Accuracy ◽  
Velocity Potential ◽  
Statistical Characteristics ◽  
Linear Component ◽  
Periodic Waves ◽  
Second Derivatives ◽  
Non Linear ◽  
D Model ◽  
Derivatives Of

AbstractThe paper describes the attempt to develop the accelerated method of simulation of 2-D surface waves with a use of 2-D model derived by simplifications of 3-D equations for potential periodic deep-water waves. The derivation is based on separation of velocity potential in surface-fitted coordinates into linear and non-linear components and analysis of exact Poisson equation for non-linear component of potential on a free surface. This equation contains both the first and second derivatives of velocity potential. The analysis of very accurate multiple solutions for velocity potential obtained with 3-D model shows that these variables are linearly connected to each other, what allows to obtain the 2-D equation for first derivative of potential (i.e., the vertical velocity on a surface), what gives the closed 2-D formulation for 3-D problem of 2-D waves. The connection between first and second variables is not precise; hence, the method as a whole cannot be exact. However, the 2-D model derived is able to reproduce different statistical characteristics of 2-D wave field with good accuracy. The most evident advantage of new model consists of absence of calculation of 3-D structure of velocity potential what increases a speed of calculations by about two orders.

scholarly journals Construction of Web-GIS in San'in region for integrating geophysical survey data with geotechnical information

2021 ◽  
Author(s):  
Isamu Nishimura ◽  
Tatsuya Noguchi ◽  
Takao Kagawa
Keyword(s):  
Geophysical Survey ◽  
Web Gis ◽  
Base System ◽  
Survey Analysis ◽  
Borehole Data ◽  
Web Browser ◽  
Strong Ground Motion Prediction ◽  
Geophysical Surveys ◽  
Geotechnical Information ◽  
Gis System

Abstract Constructing a database of information on geotechnical information, such as geophysical survey results and borehole data, and sharing it among researchers and practitioners will be useful for the development of subsurface research and the prevention of disasters such as earthquakes and landslides. In earthquake disaster prevention, geotechnical information is particularly important for strong ground motion prediction. The geotechnical information includes analysis results based on geophysical surveys and seismic observations, and borehole data. These databases can be displayed on a map using GIS, and the existing analysis results can be checked sequentially. This will allow us to consider new observation plans and to improve the efficiency and accuracy of the analysis of the subsurface structure model. In this study, a database of geotechnical information was constructed for the San-in region. The database of geotechnical information includes the results of microtremor and gravity survey, analysis of ground structure by seismic observation, and borehole data in Tottori and Shimane prefectures. In addition, we constructed a system to display the constructed database on a map in a web browser (Web-GIS). For the base system of the GIS, Leaflet, a Java Script library, was used to display the prepared database of geotechnical information using the GSI tiled map as the base map. The developed database and GIS system will be used to researchers and the public in the future.

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