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首页> 外文期刊>Pure and Applied Geophysics >Preliminary Map of Soil's Predominant Periods in Barcelona Using Microtremors
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Preliminary Map of Soil's Predominant Periods in Barcelona Using Microtremors

机译：基于微震的巴塞罗那土壤主要时期的初步图

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摘要

— In order to evaluate soil effects in the urban area of Barcelona, the Nakamura's technique has been used to estimate the predominant periods of soils. Noise measurements for 195 sites were performed using a strong motion accelerograph and a velocimeter. In this work, the resulting preliminary map of predominant periods is presented. The obtained predominant periods are coherent with the geological and geotechnical features of the area. The analysis of the information has allowed the distinctions among several types of soil and underlying materials. A predominant period of about 0.06 s is evaluated for sites located over outcrop Paleozoic rock in the Tibidabo-Collserola Mountains. For sites consisting of material named tricycle, that is the most extensive and also the most heterogeneous zone, predominant period range from 0.10 s up to 2.0 s depending on the thickness of the surface materials and the kind and thickness of the underlying materials. In the Besós river two zones are observed: the riverside with periods between 0.50 s and 0.83 s and a second area with periods between 1.0 and 2.1 s. In the Llobregat river delta the obtained periods are quite homogeneous with values around 0.72 s. Other predominant periods are found in some tertiary rock outcrop.
机译：—为了评估巴塞罗那市区的土壤影响，Nakamura的技术已用于估算土壤的主要时期。使用强运动加速度计和测速仪对195个位置进行了噪声测量。在这项工作中，给出了主要时期的初步图。获得的主要时期与该地区的地质和岩土特征一致。通过对信息的分析，可以区分几种类型的土壤和基础材料。对于Tibidabo-Collserola山脉露头古生界岩石上的遗址，大约占0.06 s的主要时期。对于由名为三轮车的材料组成的站点，这是最广泛，也是最不均匀的区域，其主要周期范围从0.10 s到2.0 s，具体取决于表面材料的厚度以及基础材料的种类和厚度。在Besós河中观察到两个区域：河沿的时间在0.50 s和0.83 s之间，第二个区域的时间在1.0到2.1 s之间。在洛布雷加特河三角洲，获得的时期相当均匀，其值约为0.72 s。在某些第三纪岩石露头中发现了其他主要时期。

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  • 来源
    《Pure and Applied Geophysics》 |2001年第12期|2499-2511|共13页
  • 作者

    A. Alfaro; L. G. Pujades; X. Goula; T. Susagna; M. Navarro; J. Sanchez; J. A. Canas;

  • 作者单位

    Technical University of Catalonia Geotechnical Engineering and Geosciences Spain. E-mail: lluis.pujades@upc.es;

    Technical University of Catalonia Geotechnical Engineering and Geosciences Spain. E-mail: lluis.pujades@upc.es;

    Geological Survey Institut Cartogràfic de Cataluña Barcelona Spain. E-mails: xgoula@icc.es;

    tsusagna@icc.es;

    Geological Survey Institut Cartogràfic de Cataluña Barcelona Spain. E-mails: xgoula@icc.es;

    tsusagna@icc.es;

    Applied Physics Department University of Almería Almeria Spain. E-mail: mnavarro@filabres.ual.es;

    Applied Physics Department University of Almería Almeria Spain. E-mail: mnavarro@filabres.ual.es;

    Instituto Geográfico Nacional. E-mail: jacanas@mfom.es;

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  • 正文语种 eng
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  • 关键词

    Key words: Microtremor; Nakamura's technique; subsurface geology; Barcelona.;

    机译：关键词：微震;中村的技术;地下地质巴塞罗那。;

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