Orkan Ozcan

Orkan Ozcan
Istanbul Technical University · Eurasia Institute of Earth Sciences

PhD

About

118
Publications
104,273
Reads
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282
Citations
Citations since 2016
88 Research Items
244 Citations
20162017201820192020202120220204060
20162017201820192020202120220204060
20162017201820192020202120220204060
20162017201820192020202120220204060
Introduction
In the context of multidisciplinary studies performed via remotely sensed data; I am interested in working on interdisciplinary studies using remotely sensed data and ground data in GIS environment in order to: - reconstruct the environmental 3D elevation data via UAVs and USVs - investigate environmental impacts of natural and man-induced disasters, -set up the infrastructure of GIS based disaster information and early warning systems,
Additional affiliations
February 2019 - present
Eurasia Institute of Earth Sciences
Position
  • Lecturer
Description
  • YSB 660E - Unmanned Aerial Systems (UASs) in Earth Sciences The course covers basic topics including legal guidelines and regulations in the Unmanned Air Systems, as well as practical field applications and data processing experience in earth sciences.
February 2016 - present
Eurasia Institute of Earth Sciences
Position
  • Lecturer
Description
  • EARTH SYSTEM SCIENCE GRADUATE PROGRAM Course Title: YSB 574E - EARTH INFORMATION SYSTEMS The course covers the fundamental topics in Geographic Information Systems (GIS) and Remote Sensing (RS) through practical laboratory experience.
February 2015 - present
Eurasia Institute of Earth Sciences
Position
  • Professor (Associate)
Education
January 2008 - January 2014
Istanbul Technical University
Field of study
  • Investigation of Crop Growth Using Remote Sensing and GIS
September 2005 - December 2007
Istanbul Technical University
Field of study
  • Evaluation of Flood Risk Analysis in Sakarya Sub basin Using Remote Sensing and GIS

Publications

Publications (118)
Book
Full-text available
İnsansız hava araçlarının (İHA) özellikle son 5 yıl içerisindeki hızlı gelişimi ile kullanılan ve üretilen veriler artmaktadır. Bu yeni teknolojiler, özellikle yer bilimlerinde pratik ve analitik yönden yeni bir bakış açısı sağlamıştır. Ancak, ülkemizde bu konuda bütünleşmiş olarak hazırlanmış Türkçe kaynak bulunmamaktadır. Bu kitap, İHA’ların hem...
Article
Full-text available
In the western flank of the North Anatolian Fault restraining bend (i.e. Central Pontides), the Filyos River incises through the uplifting Karabük Range, creating the ~1.7 km‐deep Filyos River Gorge on the hanging wall of the reverse Karabük Fault. Seven fluvial strath terrace levels are preserved in this gorge. Optically Stimulated Luminescence ag...
Article
Full-text available
Multi-temporal repeat monitoring of flood-vulnerable rivers is crucial due to rapid alteration of morphological properties of in-channel landforms. Besides, the characteristics of the river crossing bridges may deteriorate due to flood induced scouring around bridge piles or due to flood loads. Thus, in this study high-resolution topography of the...
Article
Full-text available
Morphological changes, caused by the erosion and deposition processes due to water discharge and sediment flux occur, in the banks along the river channels and in the estuaries. Flow rate is one of the most important factors that can change river morphology. The geometric shapes of the meanders and the river flow parameters are crucial components i...
Article
Full-text available
An automated unmanned aerial vehicle (UAV) based multi-hazard performance assessment system was developed to respond to rapid performance evaluation and performance prediction needs for river crossing reinforced concrete (RC) bridges. In the developed system, firstly the seasonally acquired UAV measurements were used to obtain the three-dimensional...
Article
Full-text available
River basins are one of the most dynamic terrains on Earth, therefore, river morphology should be monitored continuously and its effects on the environment (i.e. natural hazards) should be mapped whenever possible. This study was carried out to quantify and visualize-flood-induced morphological changes in meander structures by UAV-based monitoring....
Chapter
Full-text available
2021 yılında Akdeniz Bölgesi’nde yaşanan orman yangınları büyük ölçüde can ve mal kaybına neden olmuştur. Ülkemizde 1997-2018 yılları arasında yıllık ortalama 10350 ha orman alanı yangından etki- lenmiştir. Orman yangınları bir taraftan doğal ekosistem işleyişini doğrudan etkilerken diğer taraftan ormanlık alanlarla doğrudan ve dolaylı etkileşimde...
Article
The Gulf of Gökova is one of the earthquake-prone areas in the Aegean Sea and southwestern Turkey. The paleoseismology of the region is not well known because of the lack of robust field data. In this study, we focused on marine tidal notches as geomorphic markers of modern and paleoseismic deformations. Our geomorphic surveys suggest that the 20 J...
Article
Full-text available
The Çukurova Delta Complex, formed by the Seyhan, Ceyhan, and Berdan rivers, is the second-largest delta system in the Mediterranean. The delta complex is a major depocenter that contains sediments transported from the Taurus Mountain belt since the Miocene. Studies on the Quaternary landscape evolution of the Çukurova Delta Complex are scarce, and...
Article
Along the western flank of the northern margin (Central Pontides) of the Central Anatolian Plateau, the humidity from the Black Sea is much higher than the central and eastern flanks and creates a complex relationship between surface and tectonic processes by triggering intense mass wasting activity and aggradation within narrow valleys. We identif...
Article
Full-text available
Remote sensing analysis techniques have been investigated extensively, represented by a critical vision, and are used to advance our understanding of the impacts of climate change and variability on the environment. This study aims to find a means of analysis that relies on remote sensing techniques to demonstrate the effects of observed climate va...
Conference Paper
Full-text available
Nehir havzalarının izlenmesi ve kontrollü şekilde yönetilmesi ile mevcut ekosistemin korunması ve olumlu bir şekilde geliştirilmesi ile gelecek yıllarda oluşabilecek tahribat engellenebilmektedir. Gelişen teknoloji ile İHA'lar ile gerçekleştirilecek uygulamaların uydu sistemleri ile çevresel izlemere alternatif olarak yaygın olarak kullanıldığı gör...
Conference Paper
Full-text available
Akarsular üzerinde bulunan köprü ayaklarında oluşan taşkın ve akım kaynaklı oyulma, köprülerde en sık gözlemlenen göçme nedenlerindendir. Bu nedenle, oyulma etkileri altında köprülerin güvenliğinin saptanmasında köprü ayaklarındaki oyulma mekanizmasının gerçekçi olarak belirlenmesi ve sürekli olarak takip edilerek güncellenmesi gerekmektedir. Böyle...
Conference Paper
Full-text available
Evaluating the multi-hazard performance of river crossing bridges under probable earthquake, flood, and scouring scenarios is a cumbersome task in performance-based engineering. The loss of lateral load capacity at bridge foundations may induce bridges to become highly vulnerable to failure when the effects of scour and floods are combined. Besides...
Conference Paper
Full-text available
Change detection analysis for monitoring and modeling riverine systems requires detailed spatiotemporal surveying of river morphology dynamics. An accurate high-resolution surface model of the river channel and floodplain enables a more comprehensive view of the riverbed evolution and allows monitoring the morphodynamics of the entire river channel...
Article
Full-text available
This study measured in situ indoor gamma dose rates in Arıklı village situated near a uranium mineralisation region, evaluated the risks of radiological health hazards and established a hypothetical relationship between these values and building materials using statistical tools. Eberline brand portable type ESP-2 model Na (I) scintillation probe c...
Article
Full-text available
Change detection analysis for monitoring and modeling riverine systems requires detailed spatial and temporal surveying of river morphology dynamics. Accurate digital surface models are an essential part of the studies of morphodynamic modeling of rivers and river channel evolution. An accurate high-resolution surface model of the river channel and...
Conference Paper
Full-text available
Nowadays, one of the most popular measuring platforms, increasingly applied in many applications is Unmanned Aerial Vehicles (UAVs) that can carry a variety of payloads, are automatically or the remote control system operated with the existing power system. UAVs provide high resolution data with photogrammetric flight plans realized with various se...
Conference Paper
Full-text available
In this study, we focused on a normal fault scarp exhumed within an ancient harbor city, Knidos, located Aegean coast of SW Turkey. This part of Aegean Sea is an extensional region at the back-arc region of the Hellenic Trench. We have made the inversion of the 36Cl profile to determine the age and the slip of the events that have exhumed the fault...
Conference Paper
Full-text available
Gökova Gulf is located between Datça and Bodrum peninsulas at the SW part of Turkey. It is one of the most seismically active domain of the Agean Sea. The northern coast of the gulf is delimited by normal fault segments of the Gökova Fault Zone. The sea bottom topography of the gulf is delimited by the low-angle offshore Datça Fault in the south an...
Conference Paper
Full-text available
Western Anatolia is one of the rapidly extending areas on the earth. The Menderes Massif has an actively deforming horst-graben structure in the Western Anatolian Extentional Province. The high-angle normal faults are the principal active tectonic structures of the Menderes Massif. Especially, the southern margin of the Aydın Block is characterized...
Conference Paper
Full-text available
The Menderes Massif is an actively deforming horst-graben structure in the Western Anatolian Extentional Province. Nevertheless, the rate and pattern of Quaternary deformation of the massif poorly understood. In this study, we focus on Quaternary landforms and deposits that surround southern flank of the Aydın Block. Our approach is mapping and dat...
Conference Paper
Full-text available
Gökova Gulf is located between Datça and Bodrum peninsulas at the SW part of Turkey. It is one of the most seismically active domain of the Agean Sea. The northern coast of the gulf is delimited by normal fault segments of the Gökova Fault Zone. The sea bottom topography of the gulf is delimited by the low-angle offshore Datça Fault in the south an...
Conference Paper
Full-text available
Western Anatolia is one of the rapidly extending areas on the earth. Menderes Massif in Western Anatolia has been experiencing uplift above the South Aegean arc since the Neogene. However, quantitative dating studies on determine the rock uplift or surface uplift of the Central Menderes Massif has not yet been perform. The primary goal of this stud...
Conference Paper
Full-text available
Gökova Bay is located in the south Aegean Sea and is one of the most seismically accve regions in Western Turkey. One of the challenging aspects of the seismic hazard assessments in the region is the offshore faults. There is almost no informaon about their paleoseismic accviies. In contribuuon, we carried out fieldwork along the shorelines of the...
Article
Flood and stream induced scour occurring in bridge piers located on rivers is one of the mostly observed failure reasons in bridges. Scour induced failure risk in bridges and determination of the alterations in bridge safety under seismic effects has the ultimate importance. Thus, for the determination of bridge safety under the scour effects, the...
Conference Paper
Full-text available
İnsansız Hava Araçları (İHA), mevcut güç sistemi ile otomatik olarak ya da uzaktan kumanda sistemi yardımıyla uçurulan ve faydalı yük taşıyabilen pilotsuz hava araçlarıdır. İHA’lara entegre edilmiş algılayıcılar, çalışma alanları için hazırlanan fotogrametrik uçuş planları ile otomotik uçuşlar gerçekleştirilerek düşük maliyet ve işgücünün yanı sıra...
Poster
Full-text available
Gökova Bay is one of the most seismically active regions in the western Anatolia. The latest example of this seismicity is 21 July 2017 Bodrum (Mw:6.6) Earthquake. This earthquake was an offshore earthquake, which had the potential to create coseismic deformation along the shoreline. To check this out we carried out fieldwork in the Bodrum and Kara...
Article
Full-text available
The recently proposed Bilateral Filter Luminance Proportional (BFLP) method extracts the high-frequency details from pan-chromatic (Pan) image via a multiscale bilateral filter and adds them proportionally to the multispectral (MS) image. Although this approach seems similar to other multiresolution (MRA) based schemes such as Additive Wavelet prop...
Article
Full-text available
Unmanned Aerial Systems (UASs) are widely used for various applications, especially for large-scale mapping of flood plains. The Unmanned Aerial Vehicles (UAVs) act as a bridge to fill the gap between the satellite and the field scale, as they provide an alternative to temporal and spatial resolution to the satellite imagery and can be directly lin...
Article
Full-text available
Dynamic networks of Unmanned Aerial Vehicles (UAVs) can be used in a broad range of missions like monitoring and surveillance of the coastal environments to detect shoreline changes. The aim of this study is to evaluate topographic changes along a stretch of coastline in the Silivri, which is outside metropolitan Istanbul (along the Sea of Marmara)...
Conference Paper
Full-text available
Gökova Bay is one of the most seismically active regions in the western Anatolia. Either historical or instrumental periods records reveal the presence of an intense seismic activity in the sea floor of the bay. The latest example of this activity is 21 July 2017 Bodrum (Mw:6.6) Earthquake. Our knowledge about paleoseismology of the large faults th...
Conference Paper
Full-text available
The Central Pontides of north-central Turkey are a transpressional orogenic wedge along the northern margin of the Central Anatolian Plateau (CAP), compromising the area between the North Anatolian Fault Zone (NAFZ) and Black Sea basin. The antecedent Filyos River incises through the uplifting Karabük Range, creating the ~1.5 km-deep Filyos River G...
Article
Full-text available
To identify policies that will promote positive effects and mitigate negative ones of grazing is a major challenge in the silvo-pastoral system. This paper presents the role of examining land-cover change trajectories by remote sensing imagery in grazing policy monitoring. The study was conducted for Duzlercami forest ecosystem located in the Medit...
Poster
Full-text available
Unmanned Aerial Vehicle (UAV) based Structure-from-Motion (SfM) techniques have renovated 3D topographic monitoring of earth surface, offering low-cost, rapid and reliable data acquisition and processing. Multi-temporal models of the river environment can be produced by autonomous operation in order to determine erosion, subsidence, landslide, soil...
Poster
Full-text available
Bridge foundation scour is the most common cause for the failure of highway bridges. The assessment of local scouring mechanism around bridge piers provides information for decision-making regarding the pile footing design, predicting the safety of bridges under critical scoured conditions, and as a result, may help prevent unnecessary loses. Since...
Article
We analysed the interplay between coastal uplift, sea level change in the Black Sea, and incision of the Kızılırmak River in northern Turkey. These processes have created multiple co-genetic fluvial and marine terrace sequences that serve as excellent strain markers to assess the ongoing evolution of the Pontide orogenic wedge and the growth of the...
Article
Full-text available
The world’s longest international undersea water pipeline has recently been laid from southern Turkey to Northern Cyprus to address the water scarcity problems in the Cyprus Island. When completed, the project will add 19.8 million gallons of water annually for drinking and irrigation. Moreover, it will spur further development in the Turkish area...
Conference Paper
Full-text available
Gökova Körfezi, güney Ege’nin depremsellik açısından en canlı bölgelerinden biridir. 21 Temmuz 2017 tarihinde büyüklüğü Mw:6.6 olan Bodrum Depremi bu canlılığın en son örneğidir. Bununla beraber bölgenin özellikle denizaltı depremleri ile ilişkili olarak paleosismolojisi bilinmemektedir. Bu çalışmada Gökova Körfezi’nin güney ve kuzey kıyıları boyun...
Article
Full-text available
The structural performance of reinforced concrete bridges is crucial regarding the bridge safety. Monitoring the bridge performance under multihazard effects such as scour, and earthquake becomes even more important. Thus, the scour depth along the piers and piles of bridge substructures has to be measured and tracked consistently in order for reli...
Conference Paper
Full-text available
İnsansız Hava Araçları (İHA), veri üretim işlemlerinde iş gücü ve zaman açısından yüksek konumsal ve zamansal çözünürlüklü görüntülerin elde edilmesinde klasik fotogrametri metoduna göre düşük maliyeti ile farklı disiplinlerin veri üretim aşamalarında kullanılmaya başlanmıştır. Havzalarda ve nehir yataklarında meydana gelen erozyon, çöküntü, toprak...
Conference Paper
Full-text available
Akarsular üzerinde bulunan köprü ayaklarında oluşan taşkın ve akım kaynaklı oyulma, köprülerde en sık gözlemlenen göçme nedenlerindendir. Oyulmanın, köprülerde oluşturduğu göçme riskini ve deprem etkileri altında köprünün güvenliğini ne derecede değiştirdiğinin saptanması büyük öneme sahiptir. Bu nedenle, oyulma etkileri altında köprülerin güvenliğ...
Article
Full-text available
The study evaluated the multifactorial spatial modelling used to assess vulnerability of the Düzlerçamı (Antalya) forest ecosystem to climate change. This was done to produce data, to develop tools to support decision-making and the management of vulnerable Mediterranean forest ecosystems affected by climate change, and to increase the ability of t...
Conference Paper
Full-text available
The Central Pontides of north-central Turkey are interpreted as a transpressional orogenic wedge along the northern margin of the Central Anatolian Plateau (CAP), compromising the area between the North Anatolian Fault Zone (NAFZ) and Black Sea basin. We use the Filyos River and Karabük Range to undertake the first uplift study using OSL-dating on...
Article
Full-text available
Climate change is largely recognized as a real, pressing and significant global problem. The concept of 'climate change vulnerability' helps us to better comprehend the cause/effect relationships behind climate change and its impact on human societies, socioeconomic sectors, and physiographical and ecological systems. In this study, multifactorial...
Book
Full-text available
Bu kitap, İHA’ların hem ülkemizdeki hem de diğer ülkelerdeki kullanımı ile ilgili detaylı bilgileri, uçuş operasyonları için gerekli talimatları ve uçuş sonrası elde edilecek verilerin nasıl değerlendirileceği konusunda bilgiler içermektedir. Bu kapsamda, kendi çalışmalarımız dışında yerli ve yabancı çalışmalar eşliğinde çok sayıda şekil ve tablo k...
Poster
Full-text available
Unmanned Aerial Systems (UASs) are widely implemented for terrestrial scanning applications such as large-scale mapping of flood plains or river basins. As UASs provide an alternative to temporal and spatial resolution to the satellite imagery while bridging satellite images and the field measurements, a direct link can be defined between UAS deriv...
Article
Full-text available
In this study, the spatial and temporal impacts of the Atatürk Dam on agro-meteorological aspects of the Southeastern Anatolia region have been investigated. Change detection and environmental impacts due to water-reserve changes in Atatürk Dam Lake have been determined and evaluated using multi-temporal Landsat satellite imageries and meteorologic...
Poster
Full-text available
The concept of ‘climate change vulnerability’ helps us to better comprehend the cause/effect relationships behind climate change and its impact on human societies, socioeconomic sectors, physiographical and ecological systems. Herein, multifactorial spatial modeling was applied to evaluate the vulnerability of a Mediterranean forest ecosystem to cl...
Conference Paper
Full-text available
The Mesopotamian marshlands constitute the largest wetland ecosystem in the Middle East and Western Eurasia, which were formed by the confluence of the Tigris and Euphrates rivers. The scale and speed of land cover change in the Mesopotamian marshlands have been extraordinary since they were devastated by damming and river channelization during the...
Conference Paper
Full-text available
The hydrological regime and the hydrogeomorphological processes are the most important landscape-forming factors in flood plains’ evolution. Despite the historical analysis of the flood plain ecosystem is important to recognize the main controlling factors affecting the long-term changes of the floodplain habitats, the assessment of the recent cond...
Conference Paper
Full-text available
Nowadays, Unmanned Aerial Vehicles (UAVs) are used in areas such as agriculture, forestry, energy, mining, construction, archaeology, architecture and security. UAVs acquire high spatial and temporal resolution imageries with lower cost than conventional photogrammetry method thus it has started to be used in various application fields. In this st...
Conference Paper
Full-text available
Unmanned Aerial Vehicles (UAVs) offer several advantages in terms of cost and image resolution compared to terrestrial photogrammetry and satellite remote sensing system. Nowadays, UAVs that bridge the gap between the satellite scale and field scale applications were initiated to be used in various application areas to acquire hyperspatial and high...
Conference Paper
Full-text available
Unmanned Aerial Systems (UASs) are widely used for various applications, especially for large scale mapping of flood plains. The Unmanned Aerial Vehicles (UAVs) act as a bridge to fill the gap between the satellite and the field scale, as they provide an alternative to temporal and spatial resolution to the satellite imagery and can be directly lin...
Poster
Full-text available
The aim of this study is to evaluate topographic changes along a stretch of coastline in Silivri, which is outside metropolitan Istanbul (along the Sea of Marmara) in Turkey. This region was surveyed seven times over 9 months from September 2016 to May 2017 in order to produce DEMs and orthophotos of the coastal area by using dense point clouds by...
Conference Paper
Satellite remote sensing provides a means of quantifying water budget variables over regions where in-situ measurements are scarce. This paper investigates the use of remote sensing products and WGHM (WaterGAP Global Hydrological Model) on water budget closure in Cyprus (35N-33W). The remote sensing products relate the terrestrial water storage cha...
Article
Full-text available
Climate has a dynamic structure denoting perpetual variability in temporal and spatial scales. Depending on space and time, rainfall amount has the most variation in the components of the climate system. In this study, the remote sensing dataset Tropical Rainfall Measurement Mission (TRMM) products at the 3-hour time scale has been validated with d...
Article
Full-text available
Çalışmada, Fırat Nehri boyunca 7 adet sediment ve akım gözlem istasyonundan alınan ortalama 30 yıllık günlük nehir debileri (Q) ve askıda katı madde (AKM) konsantrasyonları kullanılmıştır. Uzaktan algılama veri seti olarak, 1997-2011 dönemi içerisinde, Tropik Yağmur Ölçüm Misyonu (TRMM) 3B42 ürünü bölgedeki yağış değişkenliğini karakterize etmek am...
Article
Full-text available
Günümüzde İnsansız Hava Araçları (İHA), iş gücü kapasitesi ve kısa zamanda yüksek konumsal ve zamansal çözünürlüklü görüntülerin elde edilmesinde klasik fotogrametri metoduna göre düşük maliyeti ile çeşitli uygulama alanlarında kullanılmaya başlanmıştır. Üç boyutlu yeryüzü modellerinin oluşturulması, yüksek çözünürlüklü ortofoto üretimi, ulaşım ağı...
Conference Paper
Full-text available
The numerous complexities associated with bridge pier scour have caused scour to be one of the most active topics of stream geomorphic research. The assessment of local scouring mechanism around bridge piers provides information for decision-making regarding the pile footing design. Besides, predicting the safety of bridges under critical scoured c...