| Autor: |
Ntinalexis, Michail, Kruiver, Pauline, Bommer, Julian, Ruigrok, Elmer, Rodriguez-Marek, Adrian, edwards, ben, pinho, rui, Spetzler, Jesper, Hernandez, Edwin, Pefkos, Manos, Mahdi Bahrampouri, van Onselen, Erik, Dost, Bernard, van Elk, Jan |
| Rok vydání: |
2022 |
| Předmět: |
|
| DOI: |
10.17605/osf.io/s3zxa |
| Popis: |
A comprehensive database that has been used to develop ground-motion models for induced earthquakes in the Groningen gas field is provided. The database includes more than 8,500 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 at 50 m 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 CPTs, are provided for 80 of the ~100 recording stations. A site response model is also applied 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. For both the recording station locations and the field-wide model, the database includes transfer functions and non-linear frequency-dependent amplification factors from the reference rock horizon to the surface. 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. The data herein are presented and discussed in the paper of Ntinalexis et al. (2022), which has been submitted to Earthquake Spectra. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
