Advances and Frontiers in Modelling of Earthquake Ground Motion

A special issue of Geosciences (ISSN 2076-3263). This special issue belongs to the section "Natural Hazards".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 2309

Special Issue Editors


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Guest Editor
Istituto Nazionale Di Geofisica E Vulcanologia, Milan, Italy
Interests: ground motion models; shaking scenarios; engineering intensity measures; spatial variability of ground motion
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Istituto Nazionale Di Geofisica E Vulcanologia, Milan, Italy
Interests: ground motion predicton equations; strong motion records; residual analysis; non ergodic seismic hazard; ground motion variability; seismic engineering parameters
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Reliable quantification of earthquake ground motion is of primary concern for seismic hazard analysis (SHA) and reconstruction of shaking scenarios, as well as for engineering and civil protection purposes.

In recent decades, important advances have been made in this field due to the increasing availability of recorded data worldwide that have better constrained the empirical predictions, making it possible to launch a process of regionalisation of ground motion models (GMMs) in the most sampled areas of the globe, thereby reducing uncertainty in estimates.

Such new tendencies are showing the increasing capability of GMMs to capture physics effects, such as those related to the source rupture, regional propagation e 2D/3D site response.

Additionally, developments in numerical simulations, especially in three-dimensional physics-based models, have helped to improve our knowledge of ground motion description, particularly in the near-source boundary.

This Special Issue invites contributions that address various aspects of ground-motion modeling, particularly focused on:

  • Current state of research
  • New insights and implementations of GMMs in SHA and engineering applications
  • Ergodic and non-ergodic GMMs
  • Modeling of near-source effects
  • Empirical vs. physics-based GMMs
  • Studies on ground motion spatial correlation
  • Advanced methods for model calibration and related limitations
  • New frontiers and future developments

Submissions can include original research articles or comprehensive reviews relating to the description above.

Dr. Sara Sgobba
Dr. Giovanni Lanzano
Guest Editors

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Published Papers (1 paper)

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Research

17 pages, 4470 KiB  
Article
Consistency Check of ITACAext, the Flatfile of the Italian Accelerometric Archive
by Claudia Mascandola, Giovanni Lanzano and Francesca Pacor
Geosciences 2022, 12(9), 334; https://doi.org/10.3390/geosciences12090334 - 6 Sep 2022
Cited by 3 | Viewed by 1759
Abstract
We present the results of a consistency check performed over a flatfile of accelerometric data extracted from the ITalian ACcelerometric Archive (ITACA), enriched with velocimetric records of events with magnitude M < 4.0. The flatfile, called ITACAext, includes 31,967 waveforms from 1709 shallow [...] Read more.
We present the results of a consistency check performed over a flatfile of accelerometric data extracted from the ITalian ACcelerometric Archive (ITACA), enriched with velocimetric records of events with magnitude M < 4.0. The flatfile, called ITACAext, includes 31,967 waveforms from 1709 shallow crustal earthquakes, in the magnitude range from 3.0 to 6.9, and occurred in the period of 1972–2019 in Italy. The consistency check is carried out by decomposing the residuals obtained from a reference ground motion model, for the ordinates of the 5% damped acceleration response spectra. The residual components are subsequently analyzed to identify a list of events, stations, and records that significantly deviate from the median trends predicted by the model. The results indicate that about 10% of events and stations are outliers, while only 1% of the waveforms present anomalous amplitudes. The asymmetrical azimuthal coverage of seismic stations around the epicenter is the most common issue that can affect the estimates of the repeatable event residual term. On the other hand, peculiarities in the site-response or wrong estimates of the soil parameters (i.e., the average shear-wave velocity in the first 30 m of the subsoil) are the main issues related to the repeatable station residuals. Finally, single records can show large residuals because of issues related to signal acquisition (e.g., multiple events, noisy records) or possible near-source effects (e.g., rupture directivity). Full article
(This article belongs to the Special Issue Advances and Frontiers in Modelling of Earthquake Ground Motion)
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