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ARGONET Array

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Journal Article
Published: 15 May 2025
Bulletin of the Seismological Society of America (2025)
...Ioannis Grendas; Zafeiria Roumelioti; Nikolaos Theodoulidis; Fabrice Hollender ABSTRACT We use 964 earthquake records from the ARGONET, Cephalonia, Greece, array database to investigate the possible seasonal variation of ground motion at two surface and four borehole stations. We first apply...
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Journal Article
Published: 06 June 2018
Seismological Research Letters (2018) 89 (4): 1555–1565.
...N. Theodoulidis; F. Hollender; A. Mariscal; D. Moiriat; P.‐Y. Bard; A. Konidaris; M. Cushing; K. Konstantinidou; Z. Roumelioti ABSTRACT The ARGOstoli NETwork (ARGONET) consists of a vertical seismic array and a close by (440 m) free‐field station on bedrock, located in Cephalonia, western Greece...
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Journal Article
Published: 10 March 2020
Bulletin of the Seismological Society of America (2020) 110 (2): 441–451.
...Zafeiria Roumelioti; Fabrice Hollender; Philippe Guéguen ABSTRACT We apply interferometry by deconvolution to compute the shear‐wave velocity in shallow sediments (0–83.4 m) based on earthquake records from a vertical accelerometric array (ARGOstoli Network [ARGONET]) on Cephalonia Island, Greece...
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(a) General map with the prevailing seismotectonic features in western Greece (Cephalonia transform fault zone [CTFZ]); the frame marks the location of Cephalonia, (b) map of Cephalonia showing the exact location of the ARGOstoli Network (ARGONET) array, and (c) rough description of the stratigraphy at the ARGONET site and deployment of the vertical array.
Published: 10 March 2020
Figure 1. (a) General map with the prevailing seismotectonic features in western Greece (Cephalonia transform fault zone [CTFZ]); the frame marks the location of Cephalonia, (b) map of Cephalonia showing the exact location of the ARGOstoli Network (ARGONET) array, and (c) rough description
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(a) Map of the broader study area. (b) Epicenters of the 964 earthquakes for which data have been used in this study. (c) Location of the ARGONET array. (d) Close‐up of the location of the borehole vertical array and two surface stations (CK0 and CKWP).
Published: 15 May 2025
Figure 1. (a) Map of the broader study area. (b) Epicenters of the 964 earthquakes for which data have been used in this study. (c) Location of the ARGONET array. (d) Close‐up of the location of the borehole vertical array and two surface stations (CK0 and CKWP).
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Schematic layout of the (a) EUROSEISTEST and (b) ARGONET accelerometric arrays (see Fig. 2a for spatial scale) with borehole and surface stations. Stations are color coded according to their National Earthquake Hazards Reduction Program (NEHRP) (1997) soil classification (modified and extended from Ktenidou et al., 2018). The color version of this figure is available only in the electronic edition.
Published: 28 February 2025
Figure 3. Schematic layout of the (a) EUROSEISTEST and (b) ARGONET accelerometric arrays (see Fig.  2a for spatial scale) with borehole and surface stations. Stations are color coded according to their National Earthquake Hazards Reduction Program (NEHRP) (1997) soil classification (modified
Journal Article
Published: 24 January 2018
Seismological Research Letters (2018) 89 (2A): 678–687.
... experiment, the rotation sensor was moved back in the Koutavos basin and was collocated with the accelerometer ACAN and operated from 11 March 2014 to 2 July 2015 ( ∼ 16 months). The rotational station was called ROAN for this period (location of the then‐future Argonet vertical array). This dataset...
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Example earthquake record (in gray) corresponding to an ML 3.4 earthquake at an epicentral distance of 31 km from the ARGONET vertical array. The black color highlights the selected S‐wave window, which is tapered at both ends. The pre‐event black line corresponds to the noise record of the same duration as the S wave, which is used to compute the signal‐to‐noise spectra ratio. The gray vertical solid lines mark the manually picked S‐wave arrival and the automatically determined end of the S wave.
Published: 15 May 2025
Figure 3. Example earthquake record (in gray) corresponding to an M L  3.4 earthquake at an epicentral distance of 31 km from the ARGONET vertical array. The black color highlights the selected S ‐wave window, which is tapered at both ends. The pre‐event black line corresponds
Journal Article
Published: 13 December 2022
Seismological Research Letters (2023) 94 (2A): 925–934.
... such as seasonal variations in shear‐wave velocities ( Roumelioti et al. , 2020 ). Numerous databases from vertical accelerometer arrays are available ( UC Santa Barbara, 1989 , EuroseisTest: Pitilakis et al. , 2013 ; Corinth gulf soft soil array [CORSSA]: Kassaras et al. , 2017 ; Argostoli network [ARGONET...
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(a) Location and configuration of the ARGONET (left inset) and EUROSEISTEST (right inset) accelerometer arrays, from which data has been used in this study. (b) Data set epicentral distance–local magnitude distribution. The distance–magnitude curves for peak ground acceleration (PGA) levels of 0.5 and 50 mg using the Skarlatoudis et al. (2003) ground‐motion prediction equation (GMPE) are also depicted by dashed lines. (c) Map view of the events used in this study. The color version of this figure is available only in the electronic edition.
Published: 28 February 2025
Figure 2. (a) Location and configuration of the ARGONET (left inset) and EUROSEISTEST (right inset) accelerometer arrays, from which data has been used in this study. (b) Data set epicentral distance–local magnitude distribution. The distance–magnitude curves for peak ground acceleration (PGA
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Dispersion of Rayleigh surface waves by high‐resolution frequency–wavenumber (HR‐FK) analysis using data from a temporary, small‐aperture array of six seismometers at the ARGONET site: Dispersion Curve (DC) obtained from data collected during a dry hour (7 November 2017 00:00) (gray thick line and ±1 standard deviation in light gray) and during a wet hour (27 November 2017 00:00) (black thick line and ±1 standard deviation as dashed lines).
Published: 10 March 2020
Figure 7. Dispersion of Rayleigh surface waves by high‐resolution frequency–wavenumber (HR‐FK) analysis using data from a temporary, small‐aperture array of six seismometers at the ARGONET site: Dispersion Curve (DC) obtained from data collected during a dry hour (7 November 2017 00:00) (gray
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Comparison of the reference VS30mea‐values available for each station (circles) with the distribution of VSZPseis‐values, shown with box‐and‐whisker plots depicting the 25th–75th (box) and 10th–90th percentiles (whiskers). A logarithmic scale is used for the VS30‐values, and the NEHRP (1997) soil classification limits for classes B/A, C, D, and E are also depicted. ARGONET stations are shown in panel (a), and EUROSEISTEST stations are presented in panel (b) for the downhole array at the TST site, in panel (c) for the approximately north–south‐trending Mygdonia basin profile, and in panel (d) for the approximately east–west‐trending Mygdonia basin profile (see Fig. 2 for location details).
Published: 28 February 2025
for the V S 30 ‐values, and the NEHRP (1997) soil classification limits for classes B/A, C, D, and E are also depicted. ARGONET stations are shown in panel (a), and EUROSEISTEST stations are presented in panel (b) for the downhole array at the TST site, in panel (c) for the approximately north
Journal Article
Published: 28 February 2025
Bulletin of the Seismological Society of America (2025)
...Figure 3. Schematic layout of the (a) EUROSEISTEST and (b) ARGONET accelerometric arrays (see Fig.  2a for spatial scale) with borehole and surface stations. Stations are color coded according to their National Earthquake Hazards Reduction Program (NEHRP) (1997) soil classification (modified...
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Interferometry‐based shear‐wave velocity values (east–west direction) for different depth intervals at the site of the ARGONET vertical array using the (a,b,d,f) surface sensor and (c,e,g) intermediate sensors at depths of 5.6, 15.5, and 40.1 m, respectively, as a reference. VS values have been computed on the interferometry output with the original sampling rate (200 samples per second; gray symbols) and after upsampling (black symbols). Top right onset shows the interferometry‐based P‐wave velocity values (vertical recordings) for the 0–5.6 m depth interval.
Published: 10 March 2020
Figure 4. Interferometry‐based shear‐wave velocity values (east–west direction) for different depth intervals at the site of the ARGONET vertical array using the (a,b,d,f) surface sensor and (c,e,g) intermediate sensors at depths of 5.6, 15.5, and 40.1 m, respectively, as a reference. V S
Journal Article
Published: 26 February 2019
Bulletin of the Seismological Society of America (2019) 109 (2): 621–635.
... signals to obtain the acceleration time histories at the surface and downhole sensor depth, resulting in 30 pairs of synthetic accelerograms (downhole and at the wellhead). The input signals were selected from the database of the ARGONET vertical array (Cephalonia Island, west Greece; Hollender et al...
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Journal Article
Published: 06 May 2020
Seismological Research Letters (2020) 91 (4): 2192–2205.
... . The ARGONET (Greece) seismic observatory: An accelerometric vertical array and its data , Seismol. Res. Lett. 89 , 1555 – 1565 , doi: 10.1785/0220180042 . Thompson E. M. Baise L. G. Kayen R. E. , and Guzina B. B. 2009 . Impediments to predicting site response: Seismic property...
Journal Article
Published: 01 May 2025
Earthquake Spectra (2025) 41 (2): 1151–1176.
... and implications for soil response: What the ARGONET (Cephalonia, Greece) vertical array data reveal . Bulletin of the Seismological Society of America 110 (2): 441 – 451 . Ruigrok E Rodriguez-Marek A Edwards B...
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Journal Article
Published: 01 February 2023
Earthquake Spectra (2023) 39 (1): 702–721.
... for soil response: What the ARGONET (Cephalonia, Greece) vertical array data reveal . Bulletin of the Seismological Society of America 110 ( 2 ): 441 – 451 . Site EffectS Assessment Using AMbient Excitations (SESAME) ( 2004 ) Guidelines for the implementation of the H/V spectral ratio technique...
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First thumbnail for: A DesignSafe earthquake ground motion database for...
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Journal Article
Published: 14 December 2021
Bulletin of the Seismological Society of America (2022) 112 (2): 597–607.
... tomography , Bull. Seismol. Soc. Am. 111 , no.  3 , 1234 – 1247 , doi: 10.1785/0120210007 . Roumelioti Z. Hollender F. , and Guéguen P. 2020 . Rainfall‐induced variation of seismic waves velocity in soil and implications for soil response: What the ARGONET (Cephalonia, Greece...
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Journal Article
Published: 21 July 2020
Bulletin of the Seismological Society of America (2020) 110 (6): 3004–3020.
.... Roumelioti Z. Regnier J. Perron V. , and Bard P.‐Y. 2018 . Respective advantages of surface and downhole reference stations for site effect studies: Lessons learnt from the Argonet (Cephalonia Island, Greece) and Cadarache (Provence, France) vertical arrays , 16th European Conf...
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