Determining Roughness Angle of Limestone Using Optical Laser Scanner

Avşar, Emin Özgür; Bozkurtoğlu, Erkan; Aydar, Umut; Şeker, Dursun Zafer; Kaya, Ş.; Gazioğlu, Cem

doi:10.30897/ijegeo.306482

Cited by 10 publications

(7 citation statements)

References 13 publications

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“…Geodetic measurements and analysis have been developed in geodetic terrestrial measuring instruments with developments in technology (Avşar, et al, 2016). Geodetic instruments such as Total Station, Precision Laser, Laser Scanner are used for monitoring tunnel deformations as in underground engineering structures (Martisek & Prochazkova, 2018).…”

Section: Geodetic Methodsmentioning

confidence: 99%

Deformation Analysis by Geomatic and Geotechnical Methods in Highway Tunnels

Erenoǧlu

Yüceses

2019

International Journal of Environment and Geoinformatics

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In the highway transportation network, the tunnel has an important place. Tunnels are used to provide safe, comfortable and economical transportation in areas where topography is not available. In addition to the facilities provided by the tunnels, there are various risks during and after the manufacturing phase. These risks need to be anticipated and manufacturing must be shaped to address these risks. Therefore, deformation analysis in tunnel projects has an important place. During and after manufacture, it is necessary to determine and follow the deformations. In this study, Ayvacık-Küçükkuyu highway in Çanakkale will be dealt as T1 Tunnel between km 10 + 700-12 + 400. Due to the fact that the region is located on the earthquake zone and because of this reason it has a mixed lithology, it is very important to follow the deformations. In this context, it is aimed to analyze the relationship and dimensions of deformation factors in the structure by using geodetic and geotechnical measurement methods. The relationship between these data and the load, pressure and tension values observed on horizontal and vertical movements will be examined during the manufacturing process. Moreover, due to the fact that the zone is located on the earthquake zone, earthquakes that occur in the region during the manufacturing process and the manufacturing effects of these earthquakes will be investigated. With this study, it is aimed to give guidance to manufacturing by predicting deformation and external effects that may occur and arise in engineering constructions. The required revisions should be made in the fortification systems in line with the predetermined parameters. In this way, it is aimed to ensure that the manufacturing process continues in the most economical and safest manner.

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Section: Geodetic Methodsmentioning

confidence: 99%

Deformation Analysis by Geomatic and Geotechnical Methods in Highway Tunnels

Erenoǧlu

Yüceses

2019

International Journal of Environment and Geoinformatics

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“…Actively, as a source of energy for photosyhthesis, photosynthesizing leaves absorb the red wavelenghts (LANDSAT TM band 3) and reflect the short-wave infrared (LANDSAT TM band 4). The diffrence between the two is proportional to the amount of photosysthesis (Parodi, 2002;Schreiber, 2006;Gazioğlu, et al, 2014;İslam, et al, 2016;Gazioğlu, et al 2016;Avşar, et al, 2016;Osgouei and Kaya, 2017;Kaya et al, 2017). NDVI is unaffected by band sharpening since the relative contributions of the near-infrared and red bands remain unchanged by the fusion method (Wiemker, 1998).…”

Section: Processing Landsat Tm Imagerymentioning

confidence: 99%

Mapping South Tunisian Landscapes Using Remote Sensing and GIS Applications

Faiza¹

2018

International Journal of Environment and Geoinformatics

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Oases of South Tunisia, plays an important role in environmental, social and economic aspects of this region. This research was conducted in ten regions located on the south which are affected by changes in conditions and composition of land cover change. For each study area, LANDSAT imagery, thematic maps and training data were acquired. These images were georeferenced and radiometrically corrected and landscapes product were generated using Decision Tree Classification. The landscapes typology were then evaluated using the extract oases. This study aimed to assess the potential of NDVI (Normalized Difference Vegetation Index) to determine oasis cover using medium spatial resolution remote sensing imagery in the south of Tunisia. It explores the possibility of identifying and mapping oasis landscape types by using remote sensing, Geographic Information Systems and statistical analysis. The superposition of environment types map obtained with oasis extracted from NDVI map has shown six oasis landscapes in southern Tunisia: Gafsa-ElGuettar, El Hamma de Gabes, Douz-Kebili, Rjim Maatoug, Tozeur-Nafta and Tamerza Chebika oases. This research paper allowed to define a methodology for the construction of landscape types, in a computerized way, based on remote sensing and GIS and its result can be a draft work to make an Atlas of the landscapes of our site of study or, it can be used as a basic document to monitor the spatial extension of agricultural perimeters in order to ensure the sustainable development of these particular agro-systems.

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“…Remote Sensing and Geographical Information System (GIS) are tools which can be used to investigate and map areas that are vulnerable to flooding in conjunction with forecasting techniques. These are to predict the precipitation intensity and duration in a futuristic view (Avşar et al, 2016;Aderoju et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Geological and Geospatial Mapping of Vulnerability Areas for Proper Flood Mitigation: Ganaja, Lokoja Metropolis, North-Central Nigeria

Ozulu

Essien²,

Akudo

2021

International Journal of Environment and Geoinformatics

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This study aimed at the geological and geospatial mapping of flood vulnerable areas in Ganaja, Lokoja metropolis for proper flood mitigation. The geological mapping of the study area involved taking several traverses and understudying the different rock types in the study area. Fractures and joint within the rocks show NW-SE, NNE-SSW orientations; corresponding to the predominant stress direction that represent imprints of the Pan-African Orogeny. Buildings within 100 meters buffer distance from the river banks and flood plains are highly vulnerable, those within 200 meters buffer distance is moderately vulnerable while those 300 meters above buffer distance are less vulnerable areas. The relationship between the geology or geomorphology of the area and its effect on flood vulnerability is clearly seen from the geologic, elevation and vulnerability maps of the study area.

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Determining Roughness Angle of Limestone Using Optical Laser Scanner

Cited by 10 publications

References 13 publications

Deformation Analysis by Geomatic and Geotechnical Methods in Highway Tunnels

Deformation Analysis by Geomatic and Geotechnical Methods in Highway Tunnels

Mapping South Tunisian Landscapes Using Remote Sensing and GIS Applications

Geological and Geospatial Mapping of Vulnerability Areas for Proper Flood Mitigation: Ganaja, Lokoja Metropolis, North-Central Nigeria

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