Onur Çalışkan

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Verified

Onur verified their affiliation via an institutional email.

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• Ph.D.
• Professor (Associate) at Ankara University

Explore the rich human and economic geography of Turkey in this comprehensive study! Discover how population growth, migration, and settlement patterns have shaped Turkey's diverse regions, from bustling urban centers to traditional rural villages. Dive into the nation's key economic sectors—agriculture, industry, tourism—and understand the challen...

🌍 Discover the World Through Geography! 🌍 Are you fascinated by the intricate dance between humans and their environment? Do you want to understand how our planet shapes our lives and how we, in turn, shape it? Dive into the compelling journey of "Geography: Understanding Our World"! 📚 Why This Book? Explore the Evolution of Geography: From anci...

Turkey is composed of two peninsulas situated between the European and Asian continents. Due to variations in elevation and continentality, the country experiences 13 different climate types, ranging from semi-arid to polar tundra. The bioclimatic conditions of Turkey were determined by analyzing data from 262 stations for the period 1975–2022, con...

Discover the captivating world of Turkey's physical geography through the enlightening pages of "Geography of Physical Geography." This meticulously crafted book aims to immerse readers in a profound exploration of Turkey's diverse landscape, unraveling the intricacies of its physical geography and providing a comprehensive understanding of the cha...

This research includes the analysis of the answers given to the survey results sent to the Contemporary Drama Association stakeholders through various statistical and geographic information systems programs. In order to analyze the general demographic characteristics of the Contemporary Drama Association stakeholders, the validity of the measuremen...

This study discusses the preliminary assessment of Indoor Cooling Degree Necessity (ICDN) based upon the standard air temperature (Ta) value of 22 °C which is defined to be the standard upper mean temperature limit (Tl) for interior comfort as defined by the WHO. By considering indoor air temperature (TaI), levelled oscillations above Tl are utilis...

Doğal ortam ve insan arasındaki etkileşim bilimin temel konularından biridir. Her iki olgu da bu etkileşimin izlerini taşımaktadır. İklim gerek bireyleri gerekse de toplulukları şekillendiren doğal güçlerin başındadır. İklim sadece fiziksel çevrenin şekillenmesinde değil; insanoğlunun yaşamı ve her türlü sosyal, ekonomik faaliyeti üzerinde de öneml...

Ankara şehrinde yeşil papağanlar (Psittacula krameri) ilk kez 1976 yılında gözlenmekle birlikte, 1990’lı yılların sonu ve 2000’li yıllarla birlikte önemli bir popülasyona ulaşmışlardır. Şehrin tamamındaki parklarda ve çevresindeki korularda sıklıkla gözlemlenir hale gelmişlerdir. Ankara şehrinin önemli bir parçası haline gelmiş olan yeşil papağan h...

The disclosed study undertook a ‘human centred-approach’ that ascertained and categorised environmental human thermophysiological risk factors by relating them to the human biometeorological system through the use of three widely utilised energy balance model (EBM) indices, the physiologically equivalent temperature (PET), the modified PET, and the...

Karain Mağarası, Antalya-Burdur karayoluna 5-6 kilometre uzaklıkta bulunan Yağca köyü sınırları içindedir. Antalya’nın yaklaşık 30 kilometre kuzeybatısında Katrancık Dağı’nın doğuya bakan yamacında bulunmaktadır. Karain Mağarası Katrancık Dağı’nı oluşturan kireçtaşlarının asitli sular tarafından çözünmesiyle oluşmuş pek çok doğal mağaradan biri ve...

Herkuzimal, A- Ki-Úš serisinin ikinci kitabıdır. Düşmanını arayan bir asker ve hayatını canlılara adayan bir bilimcinin neredeyse eş zamanlı hikâyesidir. İnsan uygarlığın sona erdiği, dünyadaki bütün ekosistemlerin altüst olduğu, kıyamet sonrasındaki olayları incelemektedir. Serinin diğer kitaplarının aksine geçmişte yaşanmamış bir kitlesel yok olu...

Yakup sekiz ciltten oluşan süper yıkım serisinin birinci kitabıdır. Dünya’daki yaşamı topyekûn değiştirebilecek onlarca farklı felaket olduğu bilinen bir gerçektir. Süper yıkımların besin vi A-Kİ-ÚŠ: Yakup zincirinin yukarısındaki canlıları daha çok etkilediği anlaşılmaktadır. Bir sonraki süper yıkımdan en fazla zarar görecek canlı topluluğunun in...

İnsanların birkaç bin yıl içinde iki ayaklı gezginlerden uzay kâşifleri haline gelmesinde birçok motivasyonun yanı sıra merak duygusunun payı büyüktür. Dağın ardındakini, çölün ötesindekini, denizin sonundaki, Venüs’ün yüzeyindekini merak etmesiyle başlayan yolculuklar gelişmenin altında yatan temel faktörlerdir. Merakla harmanlanan macera arzusu b...

INTRODUCTION The 'natural' habitats of rose-ringed parakeets (Psittacula krameri) are the territory of the tropics in Africa and South Asia. The length of the species varies between 37 and 43 cm; adults reach a weight of 95-143 g. Wing openings are measured between 15-17.5 cm. Their feather is green, the beak is red. The adult male has a black or p...

Üretimden Tüketime Plastik Kökenli İklim Değişikliği ve Plastik Kirliliği ile Mücadele

The Bolkar Mountains are one of the mountain ranges in which the major glacial processes during the Last Glacial Maximum (LGM) occured and paraglacial landforms developed as a result of the climate changes after the LGM. As a result of the field studies carried out along the high northern part of the Bolkar mountain ranges, 21 different sites of de...

There is about 30 km2 of glacial ice deposition in Turkey. A large majority of these glacial ice deposits is covered with debris and the glacial movement tends to be unclear because of the lack of the accumulation. These ice masses located on the Eastern Black Sea Mountains, the Taurus Mountains and the high volcanic cones of Turkey. They are in th...

nsanların büyük bir çoğunluğu kendi türünü Evren'in merkezine yerleştirse de canlı bilim açısından değerlendirildiğinde insan bir primat türüdür. Dünya gezegeninin coğrafi özellikleri göz önünde bulundurulduğunda insanların örtüsüz, korunmasız, meskensiz yaşayabilecekleri alan kısıtlıdır. Buna karşın Homo sapiens sapiens bu görkemli sorunu ateş, kı...

One of the important natural resources for tourism is climate. Climate characteristics of an area are one of the main factors considered in terms of nature tourism. From this point of view, it is important to know the bioclimatic conditions within the Yozgat province borders. Knowing how bioclimate conditions are shaped in time and space will make...

Climatological Tourism Information Scheme of Yozgat Abstract: It is important to know climate characteristics preferentially for tourism activities to be carried out in an area. In this context, provision of climate information in tourism promotions offers users the opportunity to evaluate different alternatives. In this study, Yozgat climate and b...

During the 5th International Permafrost Conference, held in Trondheim (Norway) in August 1988, the Council of the International Permafrost Association (IPA) authorized the establishment of a Terminology Working Group with the mandate "to develop a set of internationally accepted permafrost terms for use in engineering and science, with equivalents...

z: Buzul buzunun oluşumunda yağış ve sıcaklık gibi iklim elemanlarının birincil dereceden kontrolü bulunmaktadır. Buzul buzunun ilerlemesi ya da gerilemesinde iklimin etkisi yanı sıra çevresel etkenler de önemlidir. Glasiyal, proglasiyal, paraglasiyal ve periglasiyal çevreler birbirinden farklı, bağımsız süreç ve mekanizmaların iş üzerinde olduğu a...

z: Türkiye'deki buzullar yüksek kıvrım dağları ve volkan konilerinde, yükseltisi 3000 metre civarında olan sirklerde bulunmaktadır. Buzulların kütle dengesinin hesaplanması ve morfolojik analizlerin gerçekleştirilmesi açısından önemli yöntemlerden biri de coğrafi bilgi sistemleri (CBS) uygulamalarıdır. Uzaktan algılama ve klasik haritaların bir ara...

Doğa karşısında insan kendisini genellikle daha yüksek bir konuma yerleştirir. İnsan olmak daha yüce, daha güzel, daha olumludur. Cansız olmak, hayvan ya da bitki olmak insana göre daha aşağılık, daha çirkin, daha olumsuzdur. Çevre ve insanlar arasındaki sorunların temelinde insanın kendisini nasıl konumlandırdığı yatmaktadır. Geçmişte binlerce yıl...

Glacial, proglacial, paraglacial and periglacial environments are land systems those have different and independent mechanism, processes in charge. Although all four environments have different mechanism, processes, dynamics from each other, all of them can contain glacier ice. The glacier ice is remnant part from retreating glaciers in proglacial...

Bilim insanı olabilmek için gereken temel bileşenlerin üstün zekâ, üstün yetenekler ve mükemmel bir hafıza olduğuna inananlar vardır. Genelde bilim insanlarının ortalama insandan daha üstün olduğu kanısı yaygındır. Beyinlerinin daha büyük bir bölümünü kullandıkları, bu yüzden diğer bütün hemcinslerinden daha akıllı, entelektüel oldukları düşünülür....

This paper is aimed at criticizing the research which was published in Yerbilimleri (Volume 36, Issue 2, pages 61-80) and entitled Formations of Rock Glaciers in Karçal Mountains. The researchers suggested that the landforms are mostly periglacial features although the former studies mentioned that the same landforms are glacial formations in the h...

Ergene Havzası ekosistemine yönelik tehditlere karşı yürütülen mücadelede önemli aşamalardan biri de uluslararası bir proje olan Karadeniz Haliçleri Entegre Arazi Kullanım Modelidir. Bu model bağlamında ekosistemler bir bütün olarak değerlendirilmekte Karadeniz’e kıyısı olan ülkelerdeki çalışmaların, uluslararası işbirliğiyle gerçekleştirilmesi hed...

Fieldwork is widely regarded as an essential part of undergraduate education in earth and environmental sciences, and lecturers generally agree that it represents one of the most effective and enjoyable forms of teaching and learning for both staff and students. Field studies provide the opportunity to experiment with a wide variety of different mo...

This paper is aimed at criticizing the research which was published in Yerbilimleri (Volume 36, Issue 2, pages 61- 80) and entitled Formations of Rock Glaciers in Karçal Mountains. The researchers suggested that the landforms are mostly periglacial features although the former studies mentioned that the same landforms are glacial formations in the...

z: Buzul buzunun oluşumunda yağış ve sıcaklık gibi iklim elemanlarının birincil dereceden kontrolü bulunmaktadır. Buzul buzunun ilerlemesi ya da gerilemesinde iklimin etkisi yanı sıra çevresel etkenler de önemlidir. Glasiyal, paraglasiyal, periglasiyal ve proglasiyal çevreler birbirinden farklı, bağımsız süreç ve mekanizmaların iş üzerinde olduğu a...

Dünya üzerindeki en zorlu şartlar, en çetin ortamlar soğuk iklim alanlarında ortaya çıkmaktadır. Buzküre, yılın büyük bir bölümünde olumsuz koşullar ve sınırlı olanaklar sunmaktadır. Bahsi geçen alanlar ekonomik faaliyetler açısından da fakirdir. Tarım, hayvancılık, sanayi üretimi sınırlı alanlarda yapılabilmektedir. Bununla birlikte fosil yakıtlar...

In this study two meteorology stations which is very close (26.3 km) but have different land use and pattern have been compared by the thermal perceptions (physiologically equivalent temperature, PET) that have been calculated from the meteorological parameters which has been recorded at 7,14 and 21 hours between 1975 and 2013. Ankara (urban) has w...

Glaciated environments have been formed dominantly by glaciation and the glaciers. Periglacial is the term which refers the conditions, processes and landforms associated with cold, nonglacial environments. Paraglacial environments are the unbalanced conditions transiting between periglacial and glacial balance conditions. This situation has been i...

The debris-covered glaciers are observed all over the glaciation regions of the world (Alps, Antarctica, Greenland, Andes, Cascades, Rocky Mountains and etc.). The debris covered glaciers are known as the formations which occur in the retreating phase of glaciers and sometimes they are confused with rock glaciers. In this study, hypothesis that deb...

The debris-covered glaciers are observed all over the glaciation regions of the world (Alps, Antarctica, Greenland, Andes, Cascades, Rocky Mountains and etc.). The debris covered glaciers are known as the formations which occur in the retreating phase of glaciers and sometimes they are confused with rock glaciers. In this study, hypothesis that deb...

The bioclimatic conditions of Turkey have been carried out by the multi linear regression analysis of latitude, elevation and maritime parameters and monthly mean physiologically equivalent temperatures (PET) of 69 stations which has measurements at 07:00, 14.00 and 21.00 LST (local standard time) between 1975 and 2008. PET is one of the thermal co...

Buzküre (cryosphere, kayrosfer) zemin sıcaklığının sürekli ya da mevsimlik olarak 0°C’nin altında kaldığı bölgeler olarak tanımlanmaktadır. Türkiye’de süreğen donmuş zemine (permafrost) bağlı gelişen buzullaşma çevresi (periglasiyal) şekil ve özelliklere ilişkin pek çok araştırma yayımlanmıştır. Bununla birlikte buzullaşma çevresi sahaların mekânsa...

In this study, the seasonal variation of the surface temperature of Ankara urban area and its enviroment have been analyzed by using Landsat 7 image. The Landsat 7 images of each month from 2007 to 2011 have been used to analyze the annually changes of the surface temperature. The land cover of the research area was defined with supervised classifi...

This study compares the thermal bioclimatic conditions recorded at Bursa (100 m) and Uludağ (1878 m) meteorological stations at 7:00, 14:00 and 21:00 LST (local standard time) between 1975 and 2006, by using the physiologically equivalent temperature (PET), which is calculated from meteorological parameters. The effects of elevation-dependent envir...

Climate is an important resource for tourism and an equally important element that needs to be included in tourism purposes. This study reveals Nevşe-hir's human-bioclimatological and tourism climatological conditions. These con-ditions were identified by using physiologically equivalent temperature and Cli-mate-Tourism-Information-Scheme over 10-d...

The bioclimatic conditions of Turkey have been carried out by the multi linear regression analysis of latitude, elevation and maritime parameters and monthly mean physiologically equivalent temperatures (PET) of 69 stations which has measurements between 1975 and 2008. At the end of calculations, it is concluded that the coastal areas and terrestri...

z: Türkiye'nin biyoklimatik koşulları, 1975-2008 dönemine ait 69 istasyon verisi kullanılarak enlem, yükselti ve denizellik özellikleri dikkate alınarak belirlenmiştir. Aylık ortalama fizyolojik eşdeğer sıcaklıkların (FES) alansal dağılımında çoklu çizgisel regresyon modeli kullanılmıştır. Yapılan hesaplamalara göre Türkiye'nin güneyi ve batısındak...

Abstract In this study two meteorology stations which is very close (26.3 km) but have different land use and pattern have been compared by the thermal perceptions (physiologically equivalent temperature, PET) that have been calculated from the meteorological parameters which has been recorded at 7, 14 and 21 between 1975 and 2008. Ankara Meteorolo...

The differentiation and the determination of reference potential evapotranspiration (PETref) is important for many geo scientifically relevant questions. The ASCE (American Society of Civil Engineers)-Penman-Monteith approach provides a facility for the estimation of PETref using meteorological input parameters. However, the equation needs a lot of...

In this research the glaciers and glaciated areas of northwest of Bolkar mountains and their geographical conditions have been studied. Recent debris-covered glaciers have been determined in the higher (>2900 m) parts of north and, partially, northeast-facing cirques of two glaciated areas of Pleistocene. The surface area of the largest glacier (Me...

Climate is an important resource for tourism and an equally important element that needs to be included in tourism promotions. This study reveals Bursa’s bioclimatological conditions. These conditions were identified by using physiologically equivalent temperature and a Climate–Tourism–Information–Scheme over 10-day periods and analyzing the mean t...

In this study, the bioclimatological conditions of Ankara urban area have been analyzed from the data which has been acquired from areas having different land cover and use. The hourly thermal perceptions of six meteorology stations have been calculated by using the physiologically equivalent temperature (PET) index that could involve not only the...

Laboratory exercises, field observations and field trips are fundamental parts of many earth science and environmental science courses. Field observations and field trips can be constrained because of distance, time, expense, scale, safety, or complexity of real-world environments. During the last decades actual field trips have been losing power a...

In this study, the potential trends of temperature and precipitation have been investigated from the data which is acquired from the meteorology stations in Van Basin and its near vicinity. And also the variations and change in trends, and their spatial analysis have been questioned by using Pearson correlation analysis. From the results of the ana...

In this study, the potential trends of temperature and precipitation have been investigated from the data which is acquired from the meteorology stations in Van Basin and its near vicinity. And also the variations and change in trends, and their spatial analysis have been questioned by using Pearson correlation analysis. From the results of the ana...

In this study, the Physiological Equivalent Temperatures (PET) of different land patterns in the Ankara urban area has been analyzed. The spatial distribution and temporal variation of the thermal perceptions and the grades of thermal stress caused by the thermal conditions have been determined for 00:00, 03:00, 06:00, 09:00, 12:00, 15:00, 18:00 an...

Climate is an important resource for tourism and an equally important element that needs to be included in tourism promotions. This study reveals Nevşehir's bioclimatological conditions. These conditions were identified by using physiologically equivalent temperature and Climate-Tourism-Information-Scheme over 10-day periods and analyzing the mean...

In this study, actual glaciers of Aladağlar where is one of the most important glaciation areas of Anatolia are investigated. As a result of the research, it is determined that the actual glaciers of the research area are covered with a debris layer. The debris cover is the most important factor for existence of these glaciers until today. The debr...

In this study the bioclimatic conditions on Nevsehir's urban area is analyzed by means of frequency of thermal sensation based on physiologically equivalent temperature. In combination with some other meteorological parameters, such as air and surface temperature, wind speed, cloudiness, vapor pressure, relative humanity, the heat balance of the hu...

In this study the bioclimatological conditions on Nevºehir and Ürgüp are analyzed by means of frequency of thermal sensation based on physiologically equivalent temperature (PET). In combination with some other meteorological parameters, such as air and surface temperature, wind speed, cloudiness, vapour pressure, relative humanity, the heat balanc...

In this study, actual glaciers of Aladağlar which is one of the most important glaciation areas of Anatolia are investigated. As a result of the research, it is determined that the actual glaciers of the research area are covered with debris layer. The debris cover is the most important factor for existence of these glaciers until today. The debris...

The debris-covered glaciers are observed all over the glaciation regions of the world (Alps, Antarctica, Greenland, Andes, Cascades, Rocky Mountains and ext.). The debris covered glaciers are the formations which occur as a result of the recession of normal glaciers. The debris, which can be transported easily in glacier as englacial or supraglacia...

Geographic researches are highly based on the works which are carried out in the field conditions. In order to gain more qualify and sufficient field experience of the geography students, doing these fieldworks is an unavoidable necessity. Although the importance of the geographical fieldworks and the field trips have been realized since the old ti...