The Bodrum-Kos earthquake which occurred on 20th July 2017 at 1:31 am local time with a magnitude of Mw 6.6 in the Gulf of Gökova in Turkey. The Bodrum-Kos earthquake caused a small radius tsunami in Bodrum coast and its surroundings. Here, the Interferometric Synthetic Aperture Radar (InSAR) method was utilized to reveal tectonic deformation caused by the Bodrum-Kos earthquake. The InSAR technique was increasingly used to detect ground deformation such as landslide, tectonic or volcanic. In this study, the crucial atmospheric corrections which are GACOS and phase-elevation corrections on InSAR data are discussed. GACOS correction is based on high-resolution European Centre for Medium-Range Weather Forecasts weather model at 0.125° and 6-h resolutions, SRTM DEM and ASTER GDEM. GACOS is used to separate stratified and turbulent signals from tropospheric total delays and generate high spatial resolution zenith total delay maps to be used for correcting InSAR measurements and other applications. Phase-elevation linear correction is also used to separate mostly stratified signals from tropospheric total delays due to the topographic elevation changes and 3 arc second topographic map was used in the phase-elevation correction. These atmospheric correction methods were tried both separately and sequentially and standard deviations of each method were presented. The points comparison of the cumulative line of sight displacement maps were made after and before correction. The point on the Karaada (C point) shows subsidence after the earthquake and then recovers again. Time-series results of all points show similar values until the earthquake occurs. Time-series result also shows that the Bodrum-Kos earthquake has a small radius effect over the land area only the north and maybe west island due to the occurrence on the sea and lost its much energy without reaching the land.

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大气校正对土耳其 InSAR 调查的重要性：博德鲁姆-科斯地震构造变形案例研究

博德鲁姆-科斯地震于当地时间 2017 年 7 月 20 日凌晨 1 点 31 分在土耳其戈科瓦湾发生，震级为 6.6。博德鲁姆-科斯地震在博德鲁姆海岸及其周边地区引发了小半径海啸。在这里，干涉合成孔径雷达（InSAR）方法被用来揭示由博德鲁姆-科斯地震引起的构造变形。InSAR 技术越来越多地用于检测地面变形，例如滑坡、构造或火山。在这项研究中，讨论了关键的大气校正，即 GACOS 和对 InSAR 数据的相位高程校正。GACOS 校正基于欧洲中期天气预报中心的高分辨率天气模型，分辨率为 0.125°，分辨率为 6 小时，SRTM DEM 和 ASTER GDEM。GACOS 用于从对流层总延迟中分离分层和湍流信号，并生成高空间分辨率天顶总延迟图，用于校正 InSAR 测量和其他应用。由于地形高程变化，相位高程线性校正也用于从对流层总延迟中分离大部分分层信号，并且在相位高程校正中使用3弧秒地形图。这些大气校正方法分别和顺序进行了尝试，并给出了每种方法的标准偏差。在校正前后对累积视线位移图进行点比较。Karaada 上的点（C 点）在地震后显示下沉，然后再次恢复。所有点的时间序列结果显示相似的值，直到地震发生。时间序列结果还表明，博德鲁姆-科斯地震仅在北部和西部岛屿的陆地区域具有较小的半径效应，因为发生在海上，并且在没有到达陆地的情况下损失了很多能量。