Topographic characterization of seismic networks using topographic position index and Voronoi tiles: a case of the Hokuriku region, Japan
Topographic characterization of seismic networks using topographic position index and Voronoi tiles: a case of the Hokuriku region, Japan
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DOI：
10.1007/s12517-018-3451-4
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发表时间：
2018-03
影响因子：
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通讯作者：
S. Karimzadeh;M. Miyajima;T. Ikemoto
中科院分区：
文献类型：
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作者：
S. Karimzadeh;M. Miyajima;T. Ikemoto
通常，地震记录站建在从山谷到山脊的各种地形坡度位置。在以往的大多数研究中，地形放大系数（TAF）被提出作为地震波放大的指标之一，这可能导致地震台网中地震震级的高估。本文使用一种称为“地形位置指数”的指标来描述日本北陆地区地震台的地形特征，并通过Voronoi细分（一种空间方法）来处理地震个体化方法，为地形无偏差或偏差较小的地震台提出合适的站点。
Usually, seismic record stations are established in various topographic slope positions, from valleys to ridges. In most previous studies, topographic amplification factor (TAF) is proposed as one of the indicators of earthquake wave amplification which can lead to overestimation of earthquake magnitudes in seismic networks. This paper uses an indicator called the “Topographic Position Index” for topographic characterization of seismic stations in the Hokuriku region, Japan, and deals with a seismic individuation method through Voronoi tessellation, which is a spatial approach, to propose suitable sites for topographically unbiased or less-biased seismic stations.