GEOMETRIC PROPERTIES ANALYSIS OF GERAN VALLEY BASIN IN ALJAZEERA DISTRICT-ANBAR PROVINCE

2020 ◽  
pp. 43-66
Author(s):  
Mushtaq Gharbi
Keyword(s):  
Data Base ◽  
Cross Sections ◽  
Satellite Image ◽  
Dry Valleys ◽  
Natural Factors ◽  
Basin Topography ◽  
Quantitative Properties ◽  
Area Unit ◽  
Oval Shape ◽  
Topographical Maps

The basin of Gran valley is considered as one of dry valleys in Aljazeera district that belongs to Hit municipality 180 km west Baghdad. Area unit was conformed from some measured quantitative properties. Geomorphological and morphometric properties was used to construct data base relied on topographical maps, satellite image and DEM. Basin topography was studied. These landforms were parted into topological, erosional, sedimentary and carstic origins forms. Furthermore, morphometric properties represented the relationships among factors, corrosion processes and terrestrial phenomena such as area, forms, topography and aquatic drain net. Moreover, longitudinal, cross- sections and natural factors were associated. Results revealed that area of basin was 91.41 km2 which its water flew in Euphrates. The basin was very meandering semi-oval shape. Its river levels were 4 with 121 courses that possessed overall length of 149.7 km.

scholarly journals Optimization of flat-oval pipes and perspectives of their application in beam structures

2018 ◽  
Vol 251 ◽  
pp. 03016
Author(s):  
Alexander Marutyan ◽  
Tamazi Kobaliya ◽  
Evgeny Galdin
Keyword(s):  
Cross Sections ◽  
Bending Strength ◽  
Low Cost ◽  
Design Parameters ◽  
Technical Solution ◽  
Optimal Parameters ◽  
Resistance Moment ◽  
Thin Walled ◽  
Lower Height ◽  
Oval Shape

A new technical solution for re-profiling round tubes into flat-oval ones with a ratio of 1 / 3,064 is presented, which increases their bending strength. The calculation of the optimal parameters of thin-walled sections of the flat-oval shape is given by an approximate method, the correctness of which is confirmed by testing from the standard profiles used. This calculation is repeated with respect to thin-walled sections of the oval shape. The whole diagram of changes in the design parameters of flat-oval and oval pipes is presented in the transformation of their cross-sections from vertical configurations to horizontal ones, including the transition through the outline of a circular shape. The comparative analysis of optimized cross sections of flat oval, oval and round tubes is carried out taking into account the elastic and elastic-plastic deformations of the structural material, where the length of the midline of the thin-walled section is taken as the dividing line between these deformations. The choice is substantiated in favour of flat-oval profile pipes due to their simpler shape including faces of constant curvature (flat and semi-circular), relatively low cost, lower height, greater compactness, higher resistance moment.

scholarly journals Identifikasi dan pemetaan taman setra di Kota Denpasar berbasis teknologi Sistem Informasi Geografi (SIG)

2019 ◽  
pp. 99
Author(s):  
Anak Agung Gede Sugianthara ◽  
Anak Agung Gede Dalem Sudarsana ◽  
Sang Made Sarwadana
Keyword(s):  
Data Base ◽  
Satellite Image ◽  
Data Retrieval ◽  
Rare Plants ◽  
Primary Data ◽  
Survey Method ◽  
Literature Study ◽  
Gis Technology ◽  
Geography Information ◽  
The City

Identification and mapping of grave yard park in Denpasar City based on GIS technology. Bali as a garden island consists of several types of parks, one of which is Setra Park. In Bali there are 1,488 indigenous villages/pakraman. Each traditional village has at least one grave, and some have two to three graves. Thus in Bali it is estimated that there are more than 1500 graves, but until now there is no exact data on the number and extent of the graves in Bali, as well as those in the City of Denpasar. This study aims to identification and find out at once mapped Setra Park in the city of Denpasar, Bali as the first step to compile the data base of Taman Setra in Bali Province as one of the national assets of Unitary State of Republic of Indonesia which has architectural, functional, aesthetic, and socio-religious-magical. This study used the survey method with data retrieval technique with observation, interview, and questionnaire distribution to get primary data directly obtained in the field, as well as literature study to complete data or information not obtained in the field. As for mapping using GPS instruments (Global Positioning System) and QGIS software (Quantum Geography Information System). The collected data was followed by tabulation and then analyzed with Quickbird satellite image analysis in 2012 and QGIS 2010 to compile data base and at the same time making map of Taman Setra in Denpasar City. The result of this study shows that, all the parks in Denpasar have spatial layout based on mandala concept, namely: (1) Main mandala as head (ulu setra) in the form of Pura Prajapati building; (2) Madia mandala is a body (ragan setra) as a burial place corpse, arson, and pengabenan ceremony; (3) Nista mandala as foot (cokor/sor setra) area which functioned as garbage dump or rest of upakara. The total area varies from 0.07 to 8.90 Ha, with the land ownership status belonging to the respective village of pakraman, but only about 16.7% have been certified. The arrangement of the park is quite good and has multiple functions, as well as burial places, ceremonies, and other religious rituals also function as a park, a place to harvest rare plants, and at the same time have ecological functions as green open spaces are shady, comfortable, and interesting.

scholarly journals THAY ĐỔI ĐƯỜNG BỜ BIỂN TRÀ VINH TỪ NĂM 1989 – 2014

2019 ◽  
Vol 19 (1) ◽  
pp. 31-40
Author(s):  
Nguyen Thi Mong Lan ◽  
Nguyen Hoang Nguyen ◽  
Huynh Mai Ly ◽  
Le Huu Tuan ◽  
Vo Thi Hong Quyen
Keyword(s):  
Coastal Erosion ◽  
Average Rate ◽  
Satellite Image ◽  
Field Measurements ◽  
Natural Factors ◽  
Deposition Area ◽  
Survey Results ◽  
Satellite Image Analysis ◽  
The Impact ◽  
Mangrove Planting

The coastline of Tra Vinh, about 65 km long from the mouth of Cung Hau to Dinh An, is composed of loose sediment, which is easily affected by natural factors and human activities. Based on satellite image analysis combined with survey and field measurements, the changes in coastline between 1966 and 2014 were identified. The results show that in this period the coastline had an average deposition rate of about 5–10 m/year. Dong Hai was the strongest deposition area with maximum rate of 40 m/year, average 28–30 m/year. The eroded coastline alternated with an average erosion rate of about 5–8 m/year. From 1990 up to now, many human constructions have been carried out along the coast of Tra Vinh, contributing to the impact of changing the shoreline. In the area of My Long Nam, Dong Hai and Long Vinh, the mangrove planting project was performed which helped to create continuous accretion of coastline with average rate of 17–33 m/year. In the period of 2009–2014, sea dykes in Hiep Thanh commune and Con Truong, Truong Long Hoa commune were built to prevent coastal erosion. During 2009–2014, Hiep Thanh coast and Truong Long Hoa coast were eroded at an average rate of 8–20 m/year and 6–10 m/year, respectively. After appearance of the dykes, the survey results show that in the 2014–2015 period, the shoreline of Hiep Thanh and Con Trung which has sea dykes was no longer eroded, but the adjacent coastline was more eroded at an average rate of 14–38 m/year. In Dan Thanh commune, where Duyen Hai electric center and Quan Chanh Bo canal were constructed, from 2009 to 2014, the coastline was eroded with the average rate of 12–24 m/year. In 2014–2015 period, coastal erosion was stronger at an average rate of 36–45 m/year.

scholarly journals Locating and Mapping the Traces of the Covered Ancient Theater of Amphipolis (Eastern Macedonia, Greece)

Heritage ◽  
2018 ◽  
Vol 1 (2) ◽  
pp. 306-319 ◽  
Author(s):  
Dimitris Kaimaris ◽  
George Karadedos ◽  
Charalampos Georgiadis ◽  
Petros Patias
Keyword(s):  
Cross Sections ◽  
Satellite Image ◽  
Digital Terrain Model ◽  
Geospatial Data ◽  
Aerial Photographs ◽  
Surface Model ◽  
Burial Site ◽  
Archaeological Prospection ◽  
Area Of Interest ◽  
Ancient Theater

Ancient Amphipolis (Eastern Macedonia, Greece) is one of the most important archaeological sites of Greece. Despite the restricted excavation studies, important monuments have been discovered, such as the city walls and the Macedonian burial site at the Kasta hill, etc. Currently, the location of the ancient theater is unknown and only assumptions can be made regarding its location. In the current study, we aim to detect the accurate location of the ancient theater using archaeological prospection tools, data collected from the excavated sites, and testimonies of people of the modern city. For the first step of the approach, the approximate location of the ancient theater was determined using information derived by archived geospatial data (multi-temporal aerial photographs, satellite image, and Digital Terrain Model (DTM) of the area) as well as information regarding the neighboring excavated sites. For the in-depth study of the area of interest, a drone was used for the acquisition of high-resolution geospatial data. The generated orthorectified image (3 cm spatial resolution), DTM, and Digital Surface Model (DSM) allowed the determination of the potential location of the buried orchestra’s center using geometric rules for the design of ancient theaters. Furthermore, using the produced DSM and DTM, terrain cross-sections were generated.

scholarly journals Identification And Characterization Of Geoheritage Resources At Hulu Langat, Selangor

2021 ◽  
Vol 72 ◽  
pp. 191-204
Author(s):  
Tanot Unjah ◽  
◽  
Muzaffar Yusry ◽  
Norbert Simon ◽  
◽  
...  
Keyword(s):  
Hot Spring ◽  
Satellite Image ◽  
Landscape Diversity ◽  
Contact Metamorphism ◽  
Natural Landscape ◽  
Scientific Value ◽  
Identification And Characterization ◽  
Geomorphological Features ◽  
Topographical Maps

Identification and characterization of geodiversity for sites need more systematic approach for the purpose of conserving site with high geoheritage value. The present of igneous and metamorphic rock at Hulu Langat creates diversity in rock, features and geomorphological features includes hot spring, waterfall, hill and mountain that hold potential as a protected geosite of heritage value. Besides, the previous tin mining activities created by the contact metamorphism, left series of lakes and ponds while the nearby mountain is susceptible area as watershed that turn into dams around the area. Analysis on topographical maps, satellite image and aerial photograph interpretation aided in identification potential geosite based on geomorphological diversity. A total of 31 potential geosites with geological-scientific value have been identified in this study compare to 10 from the previous study. The potential geosite have been classified into rock diversity, natural landscape diversity and anthropogenic landscape diversity. Characterisation recognise 6 of these potential geosite are best example or tip location to illustrate the geological element, 4 of these geosites are the only occurrence of the geological element, 27 of the potential geosites are well preserved and 4 hold the scientific knowledge written in the international journal. The identification and characterisation of geoheritage resources are crucial steps before evaluation or assessment, ranking and conservation or development being propose, while strengthen the conservation geology approach.

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