Hakan Akcin

• Zonguldak Bülent Ecevit Üniversitesi

The aim of this study was the safety risk assessment of accidents that occur because of production dynamics in deep coal mining, one of the highly dangerous business class, with spatiotemporal GIS. In this study, accidents that occur at certain times during production in underground mining workplaces are discussed based on evaluations of spatial an...

The aim of this study is to conduct a risk analysis of fluvial and pluvial flood disasters, focusing on the vulnerability of those residing in the river basin in coastal regions. However, there are numerous factors and indicators that need to be considered for this type of analysis. Swift and precise acquisition and evaluation of such data is an ar...

Arazi ve Arsa Düzenlemeleri (AAD), planlı şehircilik ilkeleri kapsamında uygulaması yerel yönetimlerce zorunlu olan uygulamalar kapsamındadır. Bu uygulamayla birçok parselin, parsel maliklerinden izin alınmaksızın İmar Kanunun 18. Maddesi ve uygulama yönetmeliği ile Planlı Alanlar Yönetmeliği hükümlerine ve uygulama imar planına göre parselasyonu y...

In this study, the risk assessment decision matrix based on geographic information system (RADM-GIS) model was applied to evaluate of spatial hazard of ground subsidence and building damage due to the active undercity coal mining at Bahcelievler area in Zonguldak. The city is the centre of major coal mining production basin in Turkey. The RADM-GIS...

The subsidence mechanism of ground surface is a complex phenomenon when multiple seam coal mining operations are carried out. Particularly, the coal mining beneath karstic formations causes a very special form of subsidence. The subsidence causes elasto-plastic deformation of the karstic layers and the collapse of cavities leads to dolinization and...

Air pollution has serious adverse impacts on human health and environment, so it is a major concern for many countries all over the world. Air pollution mapping and monitoring are now being an important issue to manage and enhance the environment. One of the most useful ways for characterizing atmospheric pollution is using air pollution indices th...

The aim of this study is to conduct accuracy analyses of Land Use Land Cover (LULC) classifications derived from Sentinel-2 and Landsat-8 data, and to reveal which dataset present better accuracy results. Zonguldak city and its near surrounding was selected as study area for this case study. Sentinel-2 Multispectral Instrument (MSI) and Landsat-8 t...

In this study, object-based Land Use Land Cover (LULC) classification performance of Sentinel-2 image has been tested by comparing other medium resolution satellite dataset of Zonguldak test field. The test field covering a small area around Zonguldak is located in the Western Black Sea region of Turkey. It is noted for being one of the main coal m...

Ülkemizin sürdürülebilir kalkınmasının önemli bileşenlerinden birini, 25 nehir havzamız ve onun alt havzalarından oluşan havzalar sisteminin sürdürülebilir yönetimi oluşturmaktadır. Havzaların çevre yönetimi, sosyal, demografik koşulları ve havza kaynaklarının kullanımı farklı havza yörelerinde önemli farklılıklar gösterebilmektedir. Örneğin, Batı...

In this study, land subsidence caused by underground mining activities was investigated by means of a new subsidence prediction approach (ISP-Tech) which takes into account the most important parameters contributing subsidence development such as coal production methods, depth, mining sequence and other geomechanical characteristics of underground...

Transformation of ellipsoidal heights determined by satellite techniques into local leveling heights requires geoid heights at points of interest. However, the geoid heights at each point are not available. In order to determine them, the local geoid in the transformation area must be modeled or computed by an appropriate method, one way of doing i...

Underground coal mining activities in Kozlu Hard Coal Basin have reached a level affecting ground layers inside the mining seams and the surface just above the mining operations, causing movements in vicinity of the basin. The movements emerge as collapsing in vertical direction and as sliding, curling and bending in horizontal direction and are te...

Mining conducted underground causes displacements and deformations in the ground and on the surface, also called mining subsidence, depending upon mining methods and geological factors, and can eventually bring about damages and destruction on buildings and amenities on the surface. These damages and destructions can adversely affect the developmen...

The Ismetpasa segment of the North Anatolian Fault (NAF) is a rare place where aseismic fault slip (creep) has been observed. Its creep behaviour has been monitored using different observation methods since the 1950s. The findings obtained from the studies until 1990s showed that the creep rate exponentially decreased before the major shocks in 199...

Documentation of the cultural heritage sites is extremely important for monitoring and preserves them from natural disasters and human made activities. Due to its very rich historical background from the first human settlements in Catalhoyuk and Alacahoyuk and civilizations such as Byzantine, Seljuk and Ottoman, there are lots of cultural heritage...

Yeraltı maden üretimi madencilik ve jeolojik faktörlere bağlı olarak, zemin içinde ve yer yüzeyinde deplasmanlara ve deformasyonlara neden olmaktadır. Bu deformasyonlar yeryüzündeki yapılarda hasara neden olmaktadır. Yapılarda görülen hasarlar, yeraltı madencilik faaliyeti devam ederken ortaya çıkan aktif tasman etkisi ile olabildiği gibi sonrasınd...

Zonguldak Hardcoal Basin is the largest bituminous coal region in Turkey where extensive underground mining activity exists. Because of this activity subsidence effects have been experienced in different locations of the city. In this study, surface deformations caused by the subsidence have been observed by D-InSAR technique using C-Band RADARSAT...

The Ismetpasa segment of the North Anatolian Fault is one of the rare places in the world where aseismic creep event has been observed. This segment was ruptured during both the 1944, Mw=7.2, Gerede and 1951, Mw=6.9, Kursunlu earthquakes. After these earthquakes, the segment has not experienced a major earthquake anymore. Starting from 1957, many s...

Subsidence of the earth's surface caused by underground mining can be monitored using terrestrial land-survey methods. However, applying these is difficult in hilly terrain and densely forested or urbanised areas. Such difficulties can be overcome with a combination of spaceborne SAR and GPS. InSAR accuracy corresponds to GPS and lies, with 9mm var...

In this study, we applied InSAR technique to Zonguldak Hardcoal Basin in Republic of Turkey using JERS-1/SAR, RADARSAT and PALSAR data in order to monitor mining induced surface displacement.

Interferometric Synthetic Aperture Radar (InSAR) is an effective tool to detect and measure the amount of surface deformation caused by earthquake, volcanic activity, landslide, land subsidence and others. In this paper, the authors propose the methods of phase filtering and atmospheric correction for the measurement of local deformation. Next, we...

Interferometric Synthetic Aperture Radar (InSAR), one of typical application techniques of SAR data, is used to generate Digital Elevation Model (DEM) while it is also used to measure spatial surface deformation. The former and the later techniques are usually differentiated as InSAR and Differential InSAR respectively. In this paper, we focus the...

The Ismetpasa segment of the North Anatolian Fault was ruptured during both the 1944 (Mw = 7.2) Gerede and 1951 (Mw = 6.9) Kursunlu earthquakes. The field studies carried out in the aftermath of these two major earthquakes showed that the Ismetpasa segment had experienced a creep movement. To monitor the surface creep, a geodetic network with six c...

Nowadays, very high resolution (VHR) space images e.g. IKONOS and QuickBird are available for the generation of mapping and remote sensing applications and using as an alternative to aerial photographs. The main cause is that the ground sampling distance (GSD) became smaller; therefore, it may be able to get much geometric resolution and to extract...

A cloud-free ASTER scene combination covering 61.5km × 63km Zonguldak testfield in the north-west Turkey has been analysed. It comprises the nadir and backward views with a base-to-height ratio of 0.6. The pixel size on the ground is 15m. The bundle orientation was executed with the related module of PCI Geomatica V9.1.4 software package and result...

The South Korean optical satellite KOMPSAT-1 is not well known in spite of its high potential. With a ground sampling distance of 6.6m for nadir images the resolution is sufficient for the generation of topographic maps up to the scale 1:50 000. Like SPOT and IRS-1C/D the view direction can be changed across the orbit direction leading to stereo mo...

Ülkemizin ve Zonguldak ilinin en önemli nehirlerinden ve endüstriel hammade yataklarından biri olan, deltası boyunca serbest bölge ilan edilerek üzerine ülkenin ikinci büyük yatırım projesinin gerçekleştirilmesi hedeflenen Filyos nehri vadisi ve deltası, bu çalışmanın konusunu teşkil etmektedir. Nehir vadisi boyunca taşıdığı alüvyonel malzeme ile ö...

TK-350 stereo-scenes of the Zonguldak testfield in the north-west of Turkey have been analysed. The imagery had a base-to-height ratio of 0-52 and covered an area of 200 km × 300 km, with each pixel representing 10 m on the ground. Control points digitised from 1:25 000 scale topographic maps were used in the test. A bundle orientation was executed...

Zonguldak Metropolitan Area (ZMA) is located in North-western part of Turkey and a mining and industry region which occuppies the 80% of the Zonguldak Hardcoal Basin (ZHB). In this region, hardcoal mining has been made since 1848 and, based on the records kept since 1865, 328 million tons pit run coal have been produced. Resulted amount of waste fr...

Recent developments in remote sensing enable us to use the high resolution satellite images for different purposes. Main application field for remotely sensed data is the large-scale topographic mapping and map revisions for which it is necessary to detect and extract the features from such imagery. In this study, automatic and manual feature extra...

Digital elevation models (DEM) have been generated by means of ASTER-and TK350-images in the mountainous area of Zonguldak, Turkey. The automatic image matching of the ASTER-data did not cause any problems; even in the forest areas the near infrared images do show a good contrast. This is different for the TK350-photos. At first several scratches h...

Zonguldak Metropolitan Area (ZMA) is the only Municipality Unity in Turkey and it is formed with the combination of Catalagzı, Kilimli, Kozlu and Zonguldak Central districts inside the hard coal basin located at northwestern part of the country. During the period prolonged to approximately 160 years ago, mining activities have been continuing and s...

In the stage of transformation of global positioning system coordinates to a national coordinate system, the transformation parameters computed show local changes depending upon the selection of common points used in the transformation. The coordinates of the common points in both coordinate frames, however, contain various errors, which result in...

SpaceImaging is not distributing the original IKONOS-images, only a rectification to a plane with constant height is available - the so called CARTERRA-GEO. In addition the sensor model is not published. For the image orientation rational polynomial coefficients (RPC) are available from SpaceImaging, giving the relation of the Geo-images to the gro...

The transformation between two geocentric coordinate systems is carried out by the seven-parameter similarity transformation comprising three translations, three rotations and one scale difference. A number of approaches are available to realise this. Nevertheless, the Bursa-Wolf and Molodensky-Badekas models are generally favored for their simplic...

In this study, a summary of researches between January 1996 end September 1999 of the project carried out in Bolu-Yeniçağa by Depertment of Geodesy end Photogrammetry Engineering of Zonguldak Karaelmas University which the project is named "monitoring of surface displacement in the Western Black Sea Region" are presented. GİRİŞ Günümüzde tektonik k...

ZET GPS uydularıyla konumlamada iki tür ölçü yapılabilmektedir: Ön-uzunluk 1 ve taşıyıcı dalga faz farkı 2 ölçüleri. Sinyallerin P-kod veya C/A-kod ölçülerinin duyarlığı, sırasıyla 3-10 m ve 15-30 m'dir. Taşıyıcı dalga faz farkı ölçülerini bir kaç milimetre duyarlıkla elde etmek mümkün olabilmektedir. Bu duyarlığa erişebilmek için " başlangıç faz b...

In this study, we applied InSAR technique to Zonguldak Hardcoal Basin in Republic of Turkey using JERS-1/SAR, RADARSAT and PALSAR data in order to detect mining induced surface displacement and verify the accuracy of deformation measurement by comparing the result of GPS observations of geodetic control points established in this region. Firstly, f...

Özet: Günümüzde; özellikle kentsel alanlardaki yeni tasarõmlar, yerleşim alanõ planlama, imar uygulamalarõ, koruma alanlarõndaki tarihi mekanlarõn resterasyon ve tanõtõm amaçlõ modellenmesi, kent bilgi sistemi kapsamõnda üç boyutlu kadastro uygulamalarõ, mekansal nesneleri içine alan park ve bahçe gibi peyzaj düzenlemeleri, mekansal alanlarda yol p...

MONITORING VERTICAL MOVEMENTS IN ZONGULDAK HARD COAL BASIN BY INSAR In Zonguldak hard coal basin, hard coal mining has been carried out for 150 years and yearly production is about 3 million ton. Because of the underground mining, surface subsidence has been occurred. In this study, surface subsidence which occured after 2005 in Zonguldak hard coal...

Filyos river is one of the important river of Turkey and it is the topic of this paper. This river and its delta was announced as free zone in which second largest investment project is being constructed. Its emphasis based on the fact that it is a stock of gravel and crashed zone. Due to the material substances its river bed and delta changes the...