ÖZ: İnsansız Hava Aracı (İHA); içinde pilotu ve yolcusu olmayan, sadece amaca uygun ekipman (video kamera, fotoğraf makinesi, GNSS, lazer tarama cihazı, vb.) taşıyan, uzaktan kumandalı ve/veya otomatik olarak görevini icra edebilen bir çeşit uçaktır. İHA'ların askeri, sivil (hobi ve ticari) ve bilimsel amaçlı profesyonel kullanımları ülkemizde ve tüm dünyada hızla artmakta, bu nedenle önümüzdeki yıllarda bu konunun daha fazla gündem oluşturacağı değerlendirilmektedir. Gün geçtikçe artan bu yoğun kullanımın temel nedenleri olarak; özellikle sivil amaçlı İHA'ların çok geniş kullanım alanlarının olması, birçok mesleki (örn. harita yapım amaçlı) kullanımlarda yüksek doğruluk, zaman ve maliyet tasarrufu sağlaması sayılabilir.İHA'ların gerek profesyonel mesleki; gerekse hobi amaçlı olarak günlük yaşantımıza bu kadar çok girmiş olması bazı yasal sorunları da beraberinde getirmektedir. Henüz birçok ülkede bu konuda gerekli mevzuat ya hiç yoktur veya taslak halinde sürekli geliştirilmektedir. Diğer taraftan, İHA'ların kullanımındaki bazı potansiyel olumsuzluklardan dolayı, özellikle ABD Ulaştırma
The Western Anatolia and the Aegean Sea regions are one of the most significant seismically active and rapidly deforming fields in the world. Generally, seismic activities cause deformations and these deformations are monitored with Global Positioning System (GPS) / Global Navigation System (GNSS). In this context, GPS data were used to determine the deformation of İzmir and its surrounding to estimate the relative plate motions. In this study, the kinematic structures of the faults, which control the seismic hazard in İzmir and its surroundings, processing results of the three-year (2009, 2010 and 2011) episodic GPS observations and the estimation of displacements for 21 GPS stations were presented. The aim of this study is to examine interplate motion of the stations and their relations with the tectonic structures, seismicity and paleomagnetism and additionally, to interprete the motions of the study area relative to different block motions. Consequently, the mean motion of the study area was found approximately 25 mm/yr (towards the SSW) in the Eurasia fixed frame solution. The Aegean block fixed frame and the Anatolian block fixed frame solutions were computed relative to Euler vectors. In Aegean and Anatolian block solutions it was determined that the stations move separately, not as a group. In Euler pole solution, some stations are separated from each other and meanwhile some stations are grouped by considering the differences and similarities of the station motions. According to this solution three lines and two regions were described in the study area. The relations between seismicity and paleomagnetic studies and the kinematic structures determined in Anatolian block fixed frame and Euler pole solution were also investigated. When the Anatolian block fixed frame
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