InterPACIFIC project: Comparison of invasive and non-invasive methods for seismic site characterization. Part I: Intra-comparison of surface wave methods

被引:156
作者
Garofalo, F. [1 ,15 ]
Foti, S. [1 ]
Hollender, F. [2 ]
Bard, P. Y. [3 ]
Cornou, C. [3 ]
Cox, B. R. [4 ]
Ohrnberger, M. [5 ]
Sicilia, D. [6 ]
Asten, M. [7 ]
Di Giulio, G. [8 ]
Forbriger, T. [9 ]
Guillier, B. [3 ]
Hayashi, K. [10 ]
Martin, A. [11 ]
Matsushima, S. [12 ]
Mercerat, D. [13 ]
Poggi, V. [14 ]
Yamanaka, H.
机构
[1] Politecn Torino, Turin, Italy
[2] French Alternat Energies & Atom Energy Commiss CE, Cadarache, St Paul Lez Dur, France
[3] Univ Grenoble Alpes CNRS IRD IFSTTAR, F-38000 Grenoble, France
[4] Univ Texas Austin, Austin, TX 78712 USA
[5] Univ Potsdam, Potsdam, Germany
[6] EdF, Lyon, France
[7] Monash Univ, Melbourne, Vic 3004, Australia
[8] INGV, Laquila, Italy
[9] Black Forrest Observ, Berlin, Germany
[10] Geometrics, San Jose, CA USA
[11] Geovision, Corona, CA USA
[12] Kyoto Univ, Kyoto 6068501, Japan
[13] ETHZ, Swiss Seismol Serv, Zurich, Switzerland
[14] Tokyo Inst Technol, Tokyo, Japan
[15] Eni Upstream & Tech Serv, Rome, Italy
基金
美国国家科学基金会;
关键词
Surface-wave methods; Dispersion curve; Inversion; V-s; V-30; Site characterization; MASW; Microtremors; Rayleigh waves; Geophysical methods; AVERAGE HORIZONTAL COMPONENT; ARRAY DISPERSION DATA; GROUND-MOTION; GENETIC ALGORITHMS; JOINT INVERSION; VELOCITY; CURVES; NOISE; REFRACTION; NONUNIQUENESS;
D O I
10.1016/j.soildyn.2015.12.010
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
The main scope of the InterPACIFIC (Intercomparison of methods for site parameter and velocity profile characterization) project is to assess the reliability of in-hole and surface-wave methods, used for estimating shear wave velocity. Three test-sites with different subsurface conditions were chosen: a soft soil, a stiff soil and a rock outcrop. This paper reports the surface-wave methods results. Specifically 14 teams of expert users analysed the same experimental surface-wave datasets, consisting of both passive and active data. Each team adopted their own strategy to retrieve the dispersion curve and the shear-wave velocity profile at each site. Despite different approaches, the dispersion curves are quite in agreement with each other. Conversely, the shear-wave velocity profiles show a certain variability that increases in correspondence of major stratigraphic interfaces. This larger variability is mainly due to non-uniqueness of the solution and lateral variability. As expected, the observed variability in V-s,V-30 estimatesis small, as solution non-uniqueness plays a limited role. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:222 / 240
页数:19
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