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Seismotectonic model backing the PSHA and seismic zoning of Republic of Macedonia for National Annex to MKS EN 1998-1:2012 Eurocode 8
Journal of Seismology ( IF 1.6 ) Pub Date : 2020-03-23 , DOI: 10.1007/s10950-020-09912-9
Nikola Dumurdjanov , Zoran Milutinovic , Radmila Salic

The seismicity in Macedonia is associated with recent tectonic movements along normal faults. The normal fault tectonics is a consequence of extensional processes that started at the end of the Early Miocene, which affected the larger part of the Balkan region and still is present today. These vertical differential faulting processes, distinguished also as neotectonic, divided the terrains into uplifting (horsts) and subsiding blocks (grabens). The movements along some of those faults are active even today, particularly along the superimposed faults stretching east-west (EW) to northeast-southwest (NE-SW), which transversally cross the geological units and tectonic structures, representing areas of dominant seismic activity in Macedonia. The seismic activity of destructive nature, which affects the territory of Macedonia, is modeled by 10 seismotectonic zones with predominant EW and NE-SW orientation. With the proposed new seismotectonic model, we have fundamentally redefined the existing seismicity models of Macedonia. The paper presents and discusses in all necessary details the construction and elements of the seismotectonic model developed and adopted by Milutinovic et al. (2016) for the development of a seismic zoning map of Macedonia for National Annex FN MKC EN 1998-1:2012/NA:2018 to MKS EN 1998-1:2012 Eurocode 8.

中文翻译:

支持MKS EN 1998-1:2012 Eurocode 8国家附件的马其顿共和国PSHA和地震区带的地震构造模型

马其顿的地震活动与沿正常断裂的近期构造运动有关。正常的断裂构造是始于中新世早期的扩张过程的结果,该过程影响了巴尔干地区的大部分地区,并且至今仍然存在。这些垂直的微分断层过程,也被称为新构造,将地形分为隆起(霍斯特)和沉降块(grabens)。沿某些断层的运动一直活跃到今天,尤其是沿东西向(EW)延伸到东南-西南(NE-SW)的叠加断层,这些断层横向穿过地质单元和构造结构,代表了主要地震活动区域在马其顿。具有破坏性的地震活动,影响了马其顿的领土,由以EW和NE-SW为主的10个地震构造带建模。通过提出的新地震构造模型,我们从根本上重新定义了马其顿的现有地震活动性模型。本文提出并讨论了所有必要的细节,由Milutinovic等人开发和采用的地震构造模型的构造和要素。(2016)为马其顿的国家附件FN MKC EN 1998-1:2012 / NA:2018至MKS EN 1998-1:2012 Eurocode 8的马其顿地震分区图的开发。
更新日期:2020-03-23
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