Microtremor survey to investigate seismic vulnerability around the Seulimum Fault, Aceh Besar-Indonesia
Microtremor survey to investigate seismic vulnerability around the Seulimum Fault, Aceh Besar-Indonesia
复制标题
微震调查，调查印度尼西亚大亚齐 Seulimum 断层周围的地震脆弱性
DOI：
10.1088/1757-899x/352/1/012046
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Febri Rahmayani
中科院分区：
文献类型：
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作者：
A. Simanjuntak;U. Muksin;Febri Rahmayani
Seulimeum断层产生了震级大于6.5级的内陆地震，摧毁了Lamteuba和Krueng Raya村的房屋。沿着Seulimeum断层的地震沿着大多是右行走滑断层的特征。因此，了解人口稠密的班达亚齐市和亚齐贝萨的那些村庄周围的地震易损性非常重要，因为城市和那些村庄非常靠近Seulimeum断层。为了调查Seulime断层附近地区的地震脆弱性，进行了一次微动调查。从2017年8月14日起，在亚齐省的Lamteuba和Kreung Raya村的20个地点记录了7天的微震波形，测量间隔为1公里。使用一台小种子格式的Taurus地震仪在每个站点记录30分钟的波形。利用Geopsy软件对数据进行分析，得到了各站点的水平-垂直光谱比。如果水平-垂直谱比的值高，则地震易损性被认为是高的。然后对HVSR值进行插值以获得地震易损性图。初步结果显示，第一个地点周围地区的地震脆弱性很高。
The Seulimeum Fault has generated inland earthquake with magnitude larger than M 6.5 that destroyed houses in the Lamteuba and Krueng Raya Villages. Earthquakes along the Seulimeum Fault are mostly right lateral strike-slip characterizing the Fault. The understanding of the seismic vulnerability around the highly populated Banda Aceh City and the villages in Aceh Besar is therefore very important since the city, and the villages are very close to the Seulimeum Fault. A microtremor survey has been conducted to investigate seismic vulnerability in the area closed to the Seulimeum Fault. The waveforms of the microtremor have been recorded in Lamteuba and Kreung Raya villages, Aceh Besar at 20 sites for 7 days from August 14, 2017 with the interval of measurement of 1 km. The waveforms recorded for 30 minutes at each site by using one Taurus Seismometer in miniseed format. The data has been analyzing by using Geopsy to obtain the Horizontal-Vertical Spectral Ratio for each site. The seismic vulnerability is considered to be high if the value of the Horizontal-Vertical Spectral Ratio is high. The HVSR values are then interpolated to obtain the seismic vulnerability map. The preliminary result shows high seismic vulnerability in the area around the first site.