scholarly journals GIUH-Nash based runoff prediction for Debarwa catchment in Eritrea

2019 ◽  
Vol 97 ◽  
pp. 05001 ◽  
Author(s):  
Anghesom Gehbrehiwot ◽  
Dmitry Kozlov
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
River Flow ◽  
Geographic Information ◽  
Storm Events ◽  
Unit Hydrograph ◽  
Ungauged Catchments ◽  
Nash Model ◽  
Wide Range ◽  
Instantaneous Unit Hydrograph

Correct assessment of river flow is necessary to resolve a wide range of problems in the management and use of water resources. Recently, research towards the use of geomorphologic instantaneous unit hydrograph (GIUH) coupled with other conceptual models approach for flood prediction from ungauged catchments has been intensified. Widespread accessibility to geographic information system and remotely sensed imagery which are powerful tools for acquiring model inputs is one possible reason. This study, therefore, aims at direct surface runoff (DSRO) prediction using the geomorphologic instantaneous unit hydrograph based Nash model (GIUH-Nash) from ungauged catchment. DEM obtained from Shuttle Radar Topography Mission (SRTM) having 30 m resolution is used to generate the catchment’s physiographic and geomorphologic characteristics with the help of quantum geographic information system (QGIS). Based on this information, the GIUH-Nash model is used to simulate DSRO for different storm events. A visual comparison of observed values to predicted values of the runoff hydrographs as well as statistical indices shows that DSRO could be predicted with reasonable accuracy provided complete understanding of the model development and it’s evaluation procedures are properly followed. In respect of this, some key aspects that affect the performance of the model have been suggested.

scholarly journals Recent Advances in Geographic Information System for Earth Sciences

2020 ◽  
Vol 10 (11) ◽  
pp. 3847
Author(s):  
Yosoon Choi
Keyword(s):  
Earth Sciences ◽  
Information System ◽  
Geographic Information System ◽  
Geographic Information ◽  
Geospatial Data ◽  
Recent Advances ◽  
Wide Range ◽  
Computer Based

Geographic Information System (GIS) is a computer-based technology and methodology for collecting, managing, analyzing, modeling, and presenting geospatial data for a wide range of applications [...]

scholarly journals A Note on the Identification of Common Geographies

2015 ◽  
Vol 46 (2) ◽  
pp. 288-299 ◽  
Author(s):  
Adam Slez ◽  
Heather A. O’Connell ◽  
Katherine J. Curtis
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Search Algorithm ◽  
Geographic Information ◽  
Good Effect ◽  
Data Sets ◽  
Sociological Research ◽  
Combine Data ◽  
Wide Range ◽  
Simple Search

Areal data have been used to good effect in a wide range of sociological research. One of the most persistent problems associated with this type of data, however, is the need to combine data sets with incongruous boundaries. To help address this problem, we introduce a new method for identifying common geographies. We show that identifying common geographies is equivalent to identifying components within a k-uniform k-partite hypergraph. This approach can be easily implemented using a geographic information system in conjunction with a simple search algorithm.

scholarly journals GIS “Protest Activity of Rostov Region”: Opportunities of Using in Regional Social and Economic Policy

2020 ◽  
pp. 214-223
Author(s):  
Diana Chelpanova
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Methodological Approach ◽  
Geographic Information ◽  
Important Indicator ◽  
Rostov Region ◽  
The Social ◽  
Wide Range ◽  
Political Tension ◽  
Protest Activity

Digital technologies have contributed to the formation of a new theoretical and methodological approach to the study of society and they influenced the development of a new branch of knowledge i.e. digital sociology. The purpose of this article is to analyze the opportunity of using a geographic information system (ArcGIS) for the analysis of statistical data of the facts of protests which took place in Rostov Region over the past ten years (2009–2018). Street protests, rallies, demonstrations, strikes are the main barometer of the social and political tension of a society, an important indicator of the existence of social problems and contradictions that require solutions. The article provides an overview of existing databases, the methodology for the creation of the geographic information system “Protest activity of Rostov region” and the opportunity of its use, which generally depend on research goals and objectives. This product allows identifying the structure of social protest, its qualitative and quantitative characteristics, its dynamics in time and space with the visualization of the main trends and so on. The visualization of the centers of the social and political tension in the form of ready made electronic maps contributes to deeper understanding of political, social, economic or environmental processes that take place in the Don region at different times. The authors draw the conclusion that the GIS developed for this research provides an opportunity to identify latent threats and risks that can destabilize the social situation in Rostov region, and accordingly adjust the regional policy. The geographic information system “Protest activity of Rostov region” can be used both by researchers and experts from a wide range of scientific organizations and by authorities of various administrative levels.

scholarly journals Three-Dimensional Visualization Algorithm Simulation of Construction Management Based on GIS and VR Technology

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Shuhong Xu
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Simulation Model ◽  
Line Drawing ◽  
Three Dimensional ◽  
Texture Mapping ◽  
Geographic Information ◽  
Maintenance Management ◽  
Operation And Maintenance ◽  
Wide Range

With the development and application of information technology, the digitization of information management and the virtualization of physical models have become very important technical application fields in the world. The establishment of the 3D landscape model and the realization of the 3D geographic information system (GIS) are based on this, and there is not only a wide range of development prospects in many aspects such as urban planning and management, planning and design, local government construction, housing industry development, land monitoring and management, and environmental monitoring and evaluation. There are not only research studies and formulations but also a practical significance in other analysis, evaluation, decision making, and other departments. In recent years, the research of 3D city modeling has been developed rapidly, and most of the existing 2D-GIS can be transformed into 3D visual landscape. Based on the three-dimensional geographic information system and desktop drawing software AutoCAD, this paper takes the two-dimensional line drawing (DLG) of a residential district as the base map, expounds the design process of the three-dimensional simulation model of the urban community from the aspects of map preprocessing, building simulation model construction, texture mapping, and virtual visualization, and discusses the problems encountered in it. The main contributions of this paper are that this technology puts forward a new solution for the integrated corridor operation and maintenance management, greatly improves the intelligent management level of the integrated corridor operation and maintenance work, and simplifies the complex integrated corridor operation and maintenance management. It is helpful to improve the work efficiency of operation and maintenance, reduce the dependence of personnel, and respond to the long-term construction needs of the smart city at the same time.

scholarly journals Geographic Information System (GIS) for Natural Resources Management in Rural Areas:- A Case Study of Village Jeeda, Block Goniana, District Bathinda (Punjab)

2020 ◽  
Vol 5 (7) ◽  
pp. 40-43
Author(s):  
Charanjeet Singh ◽  
Hardeep Singh
Keyword(s):  
Information System ◽  
Resource Management ◽  
Geographic Information System ◽  
Natural Resource Management ◽  
Natural Resource ◽  
Irrigation Water ◽  
Water Channels ◽  
Geographic Information ◽  
Google Earth ◽  
Wide Range

Geographic Information System is a computer based tool for marking specific Places on maps. It is a collection of map systems, geographic datum and human knowledge makes it possible to present the geography around us with the aid of digital technology. We have collected locations of Work Sites using Google Earth Android Application and Sharing Locations on WhatApp Messenger. We have selected Village Jeeda in District Bathinda(Punjab) for GIS planning of Works which are to be executed under Mahatma Gandhi National Rural Employment Guarantee Scheme (MGNREGS). Works related to Natural Resource Management such as Plantation, Renovation of Community Ponds, Maintenance of existing plantation, Irrigation Water Channels Maintenance etc. Block plantation, Ponds are marked with Polygons attributes and Line Plantation, Irrigation Water Channels are marked with paths attributes. GIS has a wide range of applications. It is equally important in Natural Resource Management. The GIS in Natural Resource Management is a resourceful technique in measuring natural resource assets.

scholarly journals GEOINFORMATION MODELING IN ENSURING THE WORK OF RIVER PORTS

2020 ◽  
Vol 6 (1) ◽  
pp. 104-109
Author(s):  
Elena A. Goncharenko ◽  
Irina P. Kokorina
Keyword(s):  
Information System ◽  
Information Systems ◽  
Geographic Information System ◽  
Geographic Information Systems ◽  
Research Method ◽  
River Flow ◽  
Geographic Information ◽  
Geoinformation Modeling ◽  
Loading And Unloading ◽  
And Storage

The activity of a river port is based on the reception of ships, their loading and unloading, as well as the storage of goods. To improve the efficiency of port administrations, improvement and implementation of new approaches to the transportation and storage of goods is required, which also includes the use of geographic information systems. The capabilities of the cartographic research method for constructing a geographic information model of the river port, analyze existing GIS of this topic are considered. Based on the analysis, the software was selected, the main cartographic and statistical sources were selected to create a geographic information system, and a database of the designed GIS was developed. General geographical and thematic objects are shown for which map symbols were designed. The indicators of the direction of the river flow are obtained, on the basis of which it is planned to obtain data on cargo flows.

scholarly journals SISTEM INFORMASI LOKASI PARIWISATA KABUPATEN ENDE BERBASIS WEB GIS

2018 ◽  
Vol 10 (2) ◽  
pp. 111-116
Author(s):  
Waldetrudis Wea Azi ◽  
Dewi Anggraini
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Geographic Information ◽  
Web Gis ◽  
Location Information ◽  
Web Based ◽  
Tourist Attractions ◽  
Wide Range ◽  
Tourism Potential

Tourism is very important in sustaining local income. Tourism Department also required to develop tourism in the region, so as to attract tourists to visit the tourist attractions there. False one that should be developed is a geographic information system for the geographic information system of the tourists easily find tourist attractions. Ende, Flores Island is located in the central part has a beautiful natural scenery both sea and land, as well as tourism. Ende is known for a wide range of fascinating natural attractions, but the tourism potential has not been known by tourists who want to visit, because the Department of Tourism Ende in promoting tourist places are still using manual systems such as brochures, posters and books. Media is not sufficient to inform the tourist attractions widely. Because the Department of Ende requires an adequate promotional media such as web GIS so that travel is better known by local and foreign tourists. Researchers aim to build a location information system applications Ende tourism web based making it easier for travelers to find tourist spots in the district of Ende. Based on the above problems, the writer intend to design and build an information system of tourist sites in the district of Ende-based web, to help the Department of Tourism Ende in promoting tourist places in the district of Ende.

A geographic information system for prediction of design flood hydrographs

1990 ◽  
Vol 17 (6) ◽  
pp. 965-973 ◽  
Author(s):  
I. Muzik ◽  
S. J. Pomeroy
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Curve Number ◽  
Geographic Information ◽  
Flood Frequency ◽  
Unit Hydrograph ◽  
Design Flood ◽  
Stream Length ◽  
Dimensionless Unit ◽  
Flood Hydrograph

A geographic information system (GIS) supporting a flood hydrograph prediction software package is described. The hydrograph prediction method is based on the convolution of excess rainfall with a synthetic unit hydrograph, derived by the Soil Conservation Service runoff curve number and a regional dimensionless unit hydrograph method, respectively. The GIS uses a raster method to store the following data: land use and land cover, soil type, rainfall intensity–frequency–duration statistics, runoff curve numbers (CN), regional dimensionless unit hydrograph, and regional lag-time relationship. The GIS has also the capability of computing a number of watershed and hydrologic parameters required for predictions, such as a watershed average rainfall and CN value, area, centroid, stream length, etc. Most of the data for such computations are input from a digitizer. Substantial time and cost savings are possible once the data base has been created. Application of the system is illustrated by an example of predicting flood frequency curves for selected watersheds in Alberta's Rocky Mountain foothills. Key words: geographic information system, flood hydrograph, curve number, hydrologic simulation, flood frequency.

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