Halicioglu Kerem, Ozener Haluk
Bogazici University, Kandilli Observatory and Earthquake Research Institute, Geodesy Department, Cengelkoy, 34680, Istanbul, Turkey.
Istanbul Technical University, Department of Geodesy and Photogrammetry Engineering, Surveying Technique Division, Maslak, 34469, Istanbul, Turkey.
Sensors (Basel). 2008 Aug 19;8(8):4742-4757. doi: 10.3390/s8084742.
Both seismological and geodynamic research emphasize that the Aegean Region, which comprises the Hellenic Arc, the Greek mainland and Western Turkey is the most seismically active region in Western Eurasia. The convergence of the Eurasian and African lithospheric plates forces a westward motion on the Anatolian plate relative to the Eurasian one. Western Anatolia is a valuable laboratory for Earth Science research because of its complex geological structure. Izmir is a large city in Turkey with a population of about 2.5 million that is at great risk from big earthquakes. Unfortunately, previous geodynamics studies performed in this region are insufficient or cover large areas instead of specific faults. The Tuzla Fault, which is aligned trending NE-SW between the town of Menderes and Cape Doganbey, is an important fault in terms of seismic activity and its proximity to the city of Izmir. This study aims to perform a large scale investigation focusing on the Tuzla Fault and its vicinity for better understanding of the region's tectonics. In order to investigate the crustal deformation along the Tuzla Fault and Izmir Bay, a geodetic network has been designed and optimizations were performed. This paper suggests a schedule for a crustal deformation monitoring study which includes research on the tectonics of the region, network design and optimization strategies, theory and practice of processing. The study is also open for extension in terms of monitoring different types of fault characteristics. A one-dimensional fault model with two parameters - standard strike-slip model of dislocation theory in an elastic half-space - is formulated in order to determine which sites are suitable for the campaign based geodetic GPS measurements. Geodetic results can be used as a background data for disaster management systems.
地震学和地球动力学研究均强调，包括希腊弧、希腊大陆和土耳其西部的爱琴海地区是欧亚大陆西部地震活动最频繁的地区。欧亚和非洲岩石圈板块的汇聚迫使安纳托利亚板块相对于欧亚板块向西移动。安纳托利亚西部因其复杂的地质结构，是地球科学研究的宝贵实验室。伊兹密尔是土耳其的一座大城市，人口约250万，面临大地震的巨大风险。不幸的是，此前在该地区进行的地球动力学研究不足，或者覆盖的是大面积区域而非特定断层。图兹拉断层在门德雷斯镇和多安贝伊角之间呈东北 - 西南走向，就地震活动及其与伊兹密尔市的距离而言，是一条重要断层。本研究旨在针对图兹拉断层及其附近区域进行大规模调查，以更好地了解该地区的构造。为了研究图兹拉断层和伊兹密尔湾沿线的地壳变形，设计了一个大地测量网络并进行了优化。本文提出了一项地壳变形监测研究的时间表，包括对该地区构造的研究、网络设计和优化策略、处理的理论与实践。该研究在监测不同类型断层特征方面也可进行扩展。为了确定哪些地点适合基于活动的大地测量GPS测量，建立了一个具有两个参数的一维断层模型——弹性半空间中位错理论的标准走滑模型。大地测量结果可作为灾害管理系统的背景数据。
