Continental Lithospheric Deformation Along a Major Strike-Slip Fault Zone: The Central North Anatolian Fault Zone, Turkey

沿着一条主要走滑断层的大陆岩石圈变形：中部北安纳托利亚断层带1500 km长的北安纳托利亚断层带（NAFZ）是世界上最大的活动大陆走滑断层之一，形成安纳托利亚块体或板块的北方边缘。所有迹象表明，NAFZ是一个新的合并大陆转换板块边界。这使我们有机会研究岩石圈变形演变成板块边界在表面和深度的快照。尽管在地表进行了大量的地质工作，但NAFZ的深层结构相对未知。我们建议研究NAFZ的中心部分，使用2年，40站便携式宽带地震部署的数据，以解决以下问题：（1）NAFZ是一个岩石圈规模的转换断层，如果是这样，岩石圈如何响应变形？NAFZ是一个较薄的深层垂直断层还是一个广阔的变形带？地壳和上地幔变形是耦合还是解耦的？ (2)更深的软流圈流动特征如何与安纳托利亚板块的地壳速度场（由GPS研究定义）和向西构造逃逸模型相关？ (3)近10Ma以来沿着断裂带岩浆活动的空间分布和组成是否与断裂的深部结构有关？(4)断层段、破裂段和主要展布带沿沿着和深度如何相互作用？ 孕震区的深度是多少？它与世纪大地震所界定的分段有何关系？ 我们将使用地震层析成像（地震层析成像，区域和本地），接收器功能分析，建模的区域波形，表面波色散，地壳和地幔各向异性测量，重力模拟和地震活动性研究来解决这些问题。

Continental Lithospheric Deformation Along a Major Strike-slip Fault:The Central North Anatolian Fault ZoneThe 1500 km long North Anatolian Fault Zone (NAFZ) is one of the world's largest active continental strike-slip faults and forms the northern margin of the Anatolian block or plate. All indications are that the NAFZ is a newly coalescing continental transform plate boundary. This gives us an opportunity to study a snapshot of lithospheric deformation in its evolution into a plate boundary at the surface and at depth. Despite much geological work at the surface, the deep structure of the NAFZ is relatively unknown. We propose to study the central portion of the NAFZ using data from a 2-year, 40 station portable broadband seismic deployment to address the following questions:(1) Is the NAFZ a lithospheric-scale transform fault and if so, how does the lithosphere respond to the deformation? Is the NAFZ a thin vertical fault at depth or a broad zone of deformation? Are the crust and upper mantle deformation coupled or decoupled? (2) How does the deeper asthenospheric flow signature relate to the crustal velocity field (as defined by GPS studies) and westward tectonic escape model for the Anatolian plate? (3) Does the spatial distribution and composition of magmatism along the fault zone in the last 10 Ma relate to the deep structure of the fault? (4) How do the fault segments, rupture segments and major splays interact along strike and at depth? What is the depth of the seismogenic zone, and how does it relate to the segmentation defined by the major earthquakes this century? We will use seismic tomography (teleseismic, regional and local), receiver function analysis, modeling of regional waveforms, surface wave dispersion, crust and mantle anisotropy measurements, gravity modeling, and seismicity studies to address these questions.