A preliminary seismic geotechnical model of Isfahan is extracted using advanced microtremor measurements as well as 2D site response analysis. Single-station microtremor measurements were performed at 25 stations throughout the study area and analyzed using the H / V method as well as the concept of ellipticity of Rayleigh waves. Seismic microzonation maps including the distribution of natural site period, depth to seismic bedrock as well as the soil type throughout the study area were extracted, providing a useful basis for land-use planning in Isfahan. The shear wave velocity of sub-surface soil layers varies from less than 250 m/s near the ground surface to more than 1200 m/s throughout the study area. In the northern districts, the depth of seismic bedrock may exceed 100 m. The natural site period varies from less than 0.5 to more than 1.0 s throughout the study area. It increases from south to north, whereas in the E–W direction, the changes are much less.

中文翻译：

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使用环境噪声和数值建模提取伊斯法罕地震岩土模型

伊斯法罕的初步地震岩土工程模型是使用先进的微震测量和二维场地响应分析提取的。在整个研究区的 25 个站点进行了单站微震测量，并使用 H/V 方法以及瑞利波椭圆度的概念进行了分析。提取了包括自然场地周期分布、地震基岩深度以及整个研究区的土壤类型在内的地震微带图，为伊斯法罕的土地利用规划提供了有用的基础。地下土壤层的剪切波速度从地表附近的小于 250 m/s 到整个研究区的 1200 m/s 以上。在北部地区，地震基岩深度可能超过 100 m。自然站点周期从小于 0.5 到大于 1 不等。整个研究区域为 0 s。由南向北增加，而在东西向的变化要小得多。