scholarly journals Assessment and modeling of sewer network development utilizing Arc GIS and SewerGEMS in Kabul city of Afghanistan

2021 ◽  
Author(s):  
Ali Reza Noori ◽  
◽  
S.K. Singh ◽  
Keyword(s):  
Research Area ◽  
Hydraulic Simulation ◽  
Master Plans ◽  
Digital Elevation ◽  
Hydraulic Design ◽  
Ecological Problems ◽  
Arc Gis ◽  
Elevation Model ◽  
The City ◽  
Wastewater Collection

The absence of a wastewater collection, management, and disposal scheme is one of Kabul’s most serious environmental issues. This has resulted in both health and ecological problems. This research used Arc GIS and SewerGEMS tools to assess the viability of a decentralized sewerage collection model in the research area. The research area was chosen as the city’s 5th district. Land-use and land-cover, Digital Elevation Model (DEM), and Satellite data were used to construct the network’s geometry in the Arc map environment. SewerGEMS software was used to perform hydraulic simulation and modeling. The variables were regulated based on the results of the study using conventional wastewater topology guidelines. Based on the outputs of hydraulic analysis, it is concluded that the decentralized wastewater collection system would be the best option for the area. It can be deduced from hydraulic design findings that the hydraulic model was successfully developed and built. The methodology can be applied for the development of future wastewater master plans of the city.

التحليل الهيدرولوجي لحوض وادي بادوش بأستخدام نظم المعلومات الجغرافية (GIS)

2021 ◽  
Vol 3 (138) ◽  
pp. 389-420
Author(s):  
Sundas Jumaa Hussein AL-Jboory ◽  
Fawaz Hameed Hamo Al-Naish
Keyword(s):  
Digital Elevation Model ◽  
Digital Elevation ◽  
Arc Gis ◽  
Elevation Model

تعد الدراسات الهيدرومورفومترية من احدى الاتجاهات الرئيسية والحديثة في دراسة الاحواض النهرية، والتي تعنى بالتحليل الكمي (العددي) لخصائص شكل الارض وايجاد العلاقات الرياضية التي تربط بين الطوبوغرافية وشبكات التصريف المائية، تهدف الدراسة الى استخدام تقنية نظم المعلومات الجغرافية في الكشف عن الخصائص الهيدرولوجية لحوض وادي بادوش والوديان الثانوية، والمتمثلة بالخصائص المساحية والشكلية والتضاريسية وخصائص الشبكة التصريفية، فضلا عن أنماط التصريف لبناء قاعدة معلومات جغرافية رقمية للحوض. اعتمدت الدراسة على ايجاد الخصائص الهيدرومورفومترية للأحواض الثانوية لحوض وادي بادوش بالاعتماد على نموذج الارتفاعات الرقمية للمنطقة (Digital Elevation Model) (DEM) وباستخدام برنامج Arc Map)) في نظام Arc GIS v.10.8))، تم اتباع المنهج التحليلي لوديان منطقة الدراسة والمنهج الكمي الذي يهدف الى تطبيق المعايير والمقاييس الكمية في تحليل العمليات الهيدرولوجية، حيث تم انتاج خريطة الشبكة النهرية والتي صنفت بحسب طريقة ستريلر الى مراتبها النهرية لحوض منطقة الدراسة. بلغت مساحة الحوض الكلية (329.95) كم2، وكما بلغ عدد المراتب النهرية ستة مراتب نهرية، وقد تباينت شبكة المجاري المائية في اعدادها واطوالها بحسب مراتبها، اما مجموع شبكة المجاري المائية (734) مجرى، والتي كان مجموع اطوالها (711.06) كم، وحيث بلغ التباين في اطوالها واعداها بسبب عمليات تكوينها ونشأتها فضلا عن التباين في الخصائص التضاريسية للحوض.

scholarly journals Modelling the Structure of Terrestrial Landscapes in Urban Areas

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Natalya Krutskikh
Keyword(s):  
Urban Areas ◽  
Complex Structure ◽  
Topographic Position Index ◽  
Digital Elevation ◽  
Geochemical Landscapes ◽  
Position Index ◽  
Type Of Land Use ◽  
Elevation Model ◽  
Internal And External Factors ◽  
The City

Abstract The study of internal and external factors in the formation of an urban geosystem is determined by its complex structure and multiple connections. Based on geoinformation modelling, an analysis of the landscape structure of the city territory is carried out, which can be a basis for further geoecological research. Morphometric indicators, which make it possible to determine the elementary geochemical landscapes, are indicated according to the data of the digital elevation model. A standardised topographic position index (TPI) is used to determine locations. Spatial zoning according to the type of land use reflects the qualitative features of the external load and technogenic impact. The data on the composition of the lithogenic base show the properties of the depositing medium and determine the natural background. Number of categories of landscapes identified are 58, characterised by a homogeneous geological composition, technogenic load and conditions for the migration of matter. The ratios of various landscape zones have been calculated. The study area as a whole is characterised by the predominance of migration processes over accumulation.

scholarly journals Morphotectonic control of the Białka drainage basin (Central Carpathians): Insights from DEM and morphometric analysis.

2016 ◽  
Vol 5 (1) ◽  
pp. 61-82 ◽  
Author(s):  
Bartosz Wołosiewicz
Keyword(s):  
Drainage Basin ◽  
Research Area ◽  
Adjacent Area ◽  
Model Base ◽  
Base Level ◽  
Morphometric Analyses ◽  
Digital Elevation ◽  
Tectonically Active ◽  
Elevation Model ◽  
Central Carpathians

Abstract The Białka river valley is directly related to a deep NNW-SSE oriented fault zone. According to the results of previous morphometric analyses, the Białka drainage basin is one of the most tectonically active zones in the Central Carpathians. It is also located within an area of high seismic activity. In this study Digital Elevation Model (DEM) based, morphometric analyses were used to investigate the morphotectonic conditions of the watershed. The results reveal the relationships between the main tectonic feature and the landforms within the research area. The lineaments, as obtained from the classified aspect map, seem to coincide with the orientation of the main structures as well as the trends revealed by the theoretical Riedel-Skempton shear model. Base-level and isolong maps support the conclusion that the Białka and Biały Dunajec fault zones exert a strong influence on the morphology of the adjacent area.

scholarly journals Simulation Of Surface runoff For Upper Tapi Subcatchment Area (Burhanpur Watershed) Using SWAT

2014 ◽  
Vol XL-8 ◽  
pp. 391-397 ◽  
Author(s):  
V. Shivhare ◽  
M. K. Goel ◽  
C. K. Singh
Keyword(s):  
Surface Runoff ◽  
Swat Model ◽  
Coefficient Of Determination ◽  
Temperature And Precipitation ◽  
Digital Elevation ◽  
Arc Gis ◽  
Monthly Runoff ◽  
Hydrologic Unit ◽  
Water Surplus ◽  
Elevation Model

Water related activity that takes place in one part of a river basin may have consequence in the other part. Any plan related to inter basin transfer of water from a water surplus basin to a deficit basin has to take into account the water availability and demands under the present and future scenarios of water use. Watershed is a hydrologic unit where all stream exit from the common outlet. In the present study, Tapi subcatchment area (Burhanpur watershed) located in inter-state basin of Madhya Pradesh and Maharashtra, India, is selected for the estimation of surface runoff using SWAT model. The SWAT works in conjunction with Arc GIS 9.3. Various parameters Digital Elevation Model (DEM), slope derived from DEM, Landuse/Landcover (LULC) and NBSSLUP soil data and temporal data for temperature and precipitation was used as input for the model to predict runoff at the catchment outlet. The model was run from the year 1992 to 1997. The performance of the model in terms of simulated runoff was evaluated using statistical method and compared simulated monthly flow with the observed monthly flow values from 1992 to 1996 to a significant extent. The coefficient of determination (R<sup>2</sup>) for the monthly runoff values for 1992 to 1996 was observed to be 0.82, 0.68, 0.92, 0.69.

scholarly journals Use of Remote Sensing Techniques in Hydrology to Mapping Water (Case study: Algadarif Area).

2021 ◽  
Author(s):  
Mustafa Ismael ◽  
Faisal Ismail ◽  
Mohammed Ahmed ◽  
Salah Salih ◽  
Mohmed Abdalhi
Keyword(s):  
Digital Elevation Model ◽  
Water Movement ◽  
Data Systems ◽  
Water Drainage ◽  
Runoff Water ◽  
Network Characteristics ◽  
Digital Elevation ◽  
Arc Gis ◽  
Elevation Model ◽  
Formal Properties

This study was conducted at Algadarif State Area, east of the Sudan latitudes 12ᵒ 17/, longitudes 34ᵒ 36/ E, which aimed to build a database of the morphometric of 26 properties from a 176 basin, this done through analyzing a digital elevation model ( DEM ) by using a group of geographical data systems programs, which integrated to result in a large number of morphometric variances and measurements. They are represented in the programs ArcMap 10.4.1 as basic programs and other supportive programs like excel. The study was done for the purpose to understand its hydrologic significances and consequently understanding the water movement on the surface of the base. The study depended on the data of the digital elevation model accurately 30 m in addition to a group of maps and satellite images. Adoption of Algadarif State upon automatic agriculture who leads to needing to know a lot about conditions, nature and description runoff water for the rain to know the different characteristics for basins to draw the water map of the State, recognition of cadastral characteristics and formal properties, identify the histological properties and water drainage network characteristics. Arc gis was installed on a windows 10 computer and loaded the digital elevation model for the experiment site from earth explorer, the DEM file was only used. Work was done by Arc Hydro Tools within the Arc GIS.

scholarly journals Digital Segusio: from models generation to urban reconstruction

2016 ◽  
Vol 7 (15) ◽  
pp. 87
Author(s):  
Antonia Spanò ◽  
Filiberto Chiabrando ◽  
Livio Dezzani ◽  
Antonio Prencipe
Keyword(s):  
Laser Scanning ◽  
Urban Landscape ◽  
Geographical Information ◽  
Innovative Methods ◽  
Digital Elevation ◽  
History Of ◽  
Land Survey ◽  
Aerial Vehicle ◽  
Elevation Model ◽  
The City

<p>The reconstructive study of the urban arrangement of Susa in the 4th century arose from the intention to exploit some resources derived from local studies, and survey activities, fulfilled by innovative methods from which the modelling of architectural heritage (AH) and virtual reconstructions are derived.  The digital Segusio presented in this paper is the result of intensive discussion and exchange of data and information during the urban landscape documentation activities, and due to the technology of virtual model generation, making it possible to recreate the charm of an ancient landscape. The land survey has been accomplished using aerial and terrestrial acquisition systems, mainly through digital photogrammetry from UAV (Unmanned Aerial Vehicle) and terrestrial laser scanning.  Results obtained from both the methods have been integrated into the medium scale geographical data from the regional map repository, and some processing and visualization supported by GIS (Geographical Information System) has been achieved. Subsequently, with the help of accurate and detailed DEM (Digital Elevation Model) and other architectural scale models related to the ancient heritage, this ancient landscape was modelled. The integration of the history of this city with digital and multimedia resources will be offered to the public in the city museum housed in the restored castle of Maria Adelaide (Savoy dynasty, 11th century), which stands in the place where the acropolis of the city of Susa lay in ancient times.</p>

scholarly journals The valens aqueduct of constantinople: hydrology and hydraulics

Water History ◽  
2020 ◽  
Author(s):  
Martin Crapper
Keyword(s):  
Fifth Century ◽  
Weather Data ◽  
Climate Modelling ◽  
Gis Analysis ◽  
Engineering Analysis ◽  
Industry Standard ◽  
Digital Elevation ◽  
Elevation Model ◽  
The City ◽  
Standard Software

Abstract A hydrological and hydraulic engineering analysis has been carried out on the Valens aqueduct system constructed from around AD 345 and serving Constantinople. A GIS analysis of previous field observations combined with a digital elevation model confirmed the aqueduct’s likely route and slope. Macrophysical Climate Modelling revealed that contemporary weather data was an appropriate proxy for the time of the aqueduct’s construction, and modern flow data was obtained for some of the springs that fed the aqueduct. Existing, previously documented remains, especially at intakes, were considered, and the industry standard software HEC–RAS was used to simulate the performance of the aqueduct system with a view to understanding the amount of water it could have delivered to the city, the seasonal variation in supply and the most likely configuration of the aqueduct, where this was not clear from existing archaeology. It was concluded that the most likely configuration for the aqueduct system was a fourth and a fifth century channel continuing separately and in parallel to the city walls, which might have delivered flow the range of 0.73 m3/s in the driest month of October to 1.73 m3/s in the wettest month of March over an average year.

scholarly journals Terrain Representation and Distinguishing Ability of Roughness Algorithms Based on DEM with Different Resolutions

2019 ◽  
Vol 8 (4) ◽  
pp. 180 ◽  
Author(s):  
Jiang Wu ◽  
Junjie Fang ◽  
Jiangbo Tian
Keyword(s):  
Research Area ◽  
Continuous Wavelet ◽  
Two Dimensional ◽  
Digital Elevation ◽  
Terrain Parameters ◽  
Terrain Representation ◽  
Elevation Model ◽  
Better Than ◽  
Deviation Method ◽  
Statistical Criteria

Digital elevation model (DEM) resolution is closely related to the degree of expression of real terrain, the extraction of terrain parameters, and the uncertainty of statistical models. Therefore, based on DEMs with various resolutions, this paper explores the representation and distinguishing ability of different roughness algorithms to measure terrain parameters. Fuyang, a district of Hangzhou City with various landform types, was selected as the research area. Slope, root mean squared height, vector deviation, and two-dimensional continuous wavelet transform were selected as four typical roughness algorithms. The resolutions used were 5, 10, 25, and 50 m DEM on the scale for plains, hills, and mountainous areas. The statistical criteria of effect size and entropy were used as indicators to evaluate and analyze the different roughness algorithms. The results show that in terms of these measures: (1) The expression ability of the SLOPE and root mean squared height (RMSH) algorithms is better than that of the vector deviation method, while the two-dimensional continuous wavelet method based on frequency analysis emphasizes the terrain information within a certain range. (2) The terrain distinguishing ability of the SLOPE and RMSH is not sensitive to the changes in resolution, with the other two algorithms varying with the changes in resolution.

GEOLOGY OF THE AQUIFER AREAS OF AN INDUCED INFILTRATION INTAKE IN THE CITY OF WROCŁAW

2016 ◽  
pp. 0-0
Author(s):  
Jurand WOJEWODA ◽  
Aleksander KOWALSKI ◽  
Roman GOTOWAŁA ◽  
Artur SOBCZYK
Keyword(s):  
Surface Water ◽  
3D Model ◽  
River Sediments ◽  
Meandering River ◽  
Digital Elevation ◽  
Odra River ◽  
Elevation Model ◽  
The City ◽  
Geological Research ◽  
Geophysical Prospection

The paper presents the results of geological research in the area of induced infiltration aquifer in the city of Wrocław. Based on drilling and geophysical prospection (GPR) data, a 3D model of the aquifer has been developed, showing the architecture of the aquifer-forming sediments. The best hydrogeological and spatial-related parameters are displayed by gravels directly overlying the impermeable basement represented most likely by pre-Odra River sediments and filling fossil valley structures. A geological-physiographic map, compiled based on the LiDAR digital elevation model, revealed two youngest sedimentary valley systems related to the recent channels of the Odra and Oława rivers. The structure of these deposits is typical of meandering river cyclothems. The use of its anisotropy can significantly improve the efficiency of infiltration of surface water into the water-bearing and conducting gravels that constitute the main usable aquifer.

scholarly journals Topography and Geomorphological units impact on the Saidsadiq town expansion ,by Using Geographical information System

2019 ◽  
Vol 7 (1) ◽  
pp. 438-460
Author(s):  
Omed Hamabaqi Hama ameen ◽  
Kawa Jabar Rahman
Keyword(s):  
Information System ◽  
Geographical Information System ◽  
Satellite Images ◽  
Geographical Information ◽  
Land Form ◽  
Digital Elevation ◽  
Geomorphological Units ◽  
Elevation Model ◽  
The City ◽  
The Town

The main goal of this investigation is to indicate the influnce of Topographic and Geomorphogical Unit on expansion of Saidsadiq town from (1965 to 2019 ) , and analyse the influnce of the slope and landform upon the directive expansion of the town , with signifying the factors of expansion the town towards the directions dependens on the map of expension with satellite images which have been recieved from (NASA-G DEM VERSION) on (USGS) site with Digital Elevation Model (DEM) by resolution (30 m) on the reaserch area . finally the investigation concludes a set of conclusions and results including the land form limited and restricted the directions of expansions of the town and The City taken the shape of Star ,expandin most of the towns area on the sediment pedimont due to easiness of building houses and connection services upon it.        

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