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A database of ground-motion recordings, site profiles, and amplification factors from the Groningen gas field in the Netherlands

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Title: A database of ground-motion recordings, site profiles, and amplification factors from the Groningen gas field in the Netherlands
Authors: Ntinalexis, M
Kruiver, P
Bommer, J
Ruigrok, E
Rodriguez-Marek, A
Edwards, B
Pinho, R
Spetzler, J
Obando Hernandez, E
Pefkos, M
Bahrampouri, M
Van Onselen, E
Dost, B
Van Elk, J
Item Type: Journal Article
Abstract: A comprehensive database that has been used to develop ground motion models for induced earthquakes in the Groningen gas field is provided in a freely accessible online repository. The database includes more than 8500 processed ground motion recordings from 87 earthquakes of local magnitude ML between 1.8 and 3.6, obtained from a large network of surface accelerographs and borehole geophones placed at 50 m depth intervals to a depth of 200 m. The 5%-damped pseudo-acceleration spectra and Fourier amplitude spectra of the records are also provided. Measured shear-wave velocity (VS) profiles, obtained primarily from seismic Cone Penetration Tests (CPTs), are provided for 80 of the ∼100 recording stations. A model representing the regional dynamic soil properties is presented for the entire gas field plus a 5 km onshore buffer zone, specifying lithology, VS, and damping for all layers above the reference baserock horizon located at about 800 m depth. Transfer functions and frequency-dependent amplification factors from the reference rock horizon to the surface for the locations of the recording stations are also included. The database provides a valuable resource for further refinement of induced seismic hazard and risk modeling in Groningen as well as for generic research in site response of thick, soft soil deposits and the characteristics of ground motions from small-magnitude, shallow-focus induced earthquakes.
Issue Date: 28-Dec-2022
Date of Acceptance: 7-Nov-2022
URI: http://hdl.handle.net/10044/1/101499
DOI: 10.1177/87552930221140926
ISSN: 8755-2930
Publisher: Earthquake Engineering Research Institute
Start Page: 687
End Page: 701
Journal / Book Title: Earthquake Spectra
Volume: 39
Issue: 1
Copyright Statement: © The Author(s) 2022. This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage). Request permissions for this article.
Publication Status: Published
Online Publication Date: 2022-12-28
Appears in Collections:Civil and Environmental Engineering
Faculty of Engineering

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