Paper Gallery

It’s a common fact that there are more interesting papers, published on high-IF journals, than time to read them all.

Thus, here a section aimed to be a GIVE-ME-A-REASON-TO-READ list, not merely a paper gallery.

If you are a FAULT2SHA member, and if you believe that your paper fits the aims and themes of the ESC Working Group, please contact the web administrators to add your titles to the list.

References are sorted by the year of publication, and alfabetically by the first author. The list will be updated on a monthly basis.

Become a Fault2SHA member HERE, contact the web administrator HERE. Last update March 2019.

2019

Valentini, A., Pace, B.. Boncio, P., Visini, F., Pagliaroli, A., and Pergalani, F.: Definition of seismic input from fault-based PSHA: remarks after the 2016 Central Italy earthquake sequence, Tectonics, 38-2, 595-620 OPEN ACCESS

Keywords: Central Italy, seismic hazard, microzonation input

In the last 10 years, central Italy has been struck several times by moderate to strong earthquakes, with Mw up to 6.5. This work focuses on how the advances in earthquake science that follow a large, deeply studied earthquake might be promptly combined with updated approaches of seismic hazard analysis to guide applicative choices for seismic risk reduction, such as post-event seismic microzoning and building design.

Visini, F., Valentini, A., Chartier, T., Scotti, O., and Pace, B.: Computational Tools for Relaxing the Fault Segmentation in Probabilistic Seismic Hazard Modelling in Complex Fault Systems, Pure and Applied Geophysics, https://doi.org/10.1007/s00024-019-02114-6

Keywords: Northern Italy, seismic hazard, fault segmentation

Recent complex coseismic ruptures have shown the need to consider different possible combinations of rupture scenarios in PSHA. In this study, this paper presents two new methodologies that model rates of ruptures along complex fault systems, one based on a floating rupture approach and another one based on assumed rupture scenarios. They represent alternatives to a recently proposed approach and further step to overcome the segmented and un-segmented approaches commonly used in PSHA in Europe.

2018

Faure Walker, J.P., Visini, F., Roberts, G., Galasso, C., McCaffrey, K., and Mildon, Z.: Variable fault geometry suggests detailed fault-slip-sate profiles and geometries are needed for fault-based Probabilistic Seismic Hazard Assessment (PSHA), Bulletin of the Seismological Society of America, 109-1, 110-123

Keywords: Fault geometry, slip rate, seismic hazard

The addition of fault locations and slip rates improves seismic hazard assessments. In this paper, the authors demonstrate the importance of detailed along fault slip rate profiles and variable fault geometry for modeled recurrence intervals and shaking intensities using example faults from the Italian Apennines. This paper demonstrates that relying on only one or a few measurements of how fast the fault is moving along a fault and projecting these measurements along the entire fault may lead to underestimating the uncertainty in earthquake hazard calculations. 

Iezzi, F., Mildon, Z., Faure Walker, J. P., Roberts,G., Goodall, H., Wilkinson, M., and Robertson, J.: Coseismic throw variation across along-strike bends on active normal faults: Implications for displacement versus length scaling of earthquake ruptures, Journal of Geophysical Research, Solid Earth, 123-11, 9817-9841 OPEN ACCESS

Keywords: Fault scaling relationships, co-seismic thow

Fault scaling relationships relating fault length to earthquake parameters such as maximum magnitude and maximum displacement are commonly used in fault-based seismic hazard analyses. However, there is a lot of scatter in such relationships.  This paper suggests that slip during an earthquake will change where there is a bend along the length of the fault and this change can be quantified and predicted using the proposed model that relates fault geometry, co-seismic throw across a fault and horizontal strain-rates. Therefore, consideration of the fault geometry should be taken into account when forming and utilising fault scaling relationships.

Verdecchia, A., Pace, B., Visini, F., Scotti, O., Peruzza, L., and Benedetti, L.: Is viscoelastic relaxation a guide for secular earthquake cascades? Insights after the central Italy 2016-17 seismic sequence, Tectonics, 37-10, 3411-3428

Keywords: Central Italy, Coulomb stress changes, fault interaction

Central Italy is characterized by a network of active faults that interact in a complex manner. We calculated the coseismic plus postseismic Coulomb failure stress changes due to eight moderate-to-strong earthquakes that have struck Central Italy in the last century and culminated with the 2016–2017 sequence. Results from this modeling coupled with some synthetic tests simulating normal fault earthquakes with different magnitudes allowed us to highlight the importance of postseismic processes. Considering in the calculations the historical and paleoseismological data, several faults in Central Italy may be at present close to failure.

2017

Azzaro, R., Barberi, G., D’Amico, S., Pace, B., Peruzza, L., and Tuvè, T.: When probabilistic seismic hazard climbs volcanoes: the Mt. Etna case, Italy – Part 1: Model components for sources parameterization, Nat. Hazards Earth Syst. Sci., 17, 1981-1998 OPEN ACCESS

Keywords: Mt Etna volcano, seismic sources

It is well known that volcanoes and earthquakes are associated, and some active volcanoes cause damaging earthquakes. Nonetheless, volcanoes usually are not pinpointed on a hazard map, as the effects of shallow, volcanic earthquakes can be overshadowed by stronger tectonic earthquakes in the region, particularly when long exposure periods are considered. In this study (Part 1, companion paper Part 2 Peruzza et al., below) we faced some challenges with software implementations and original concept scheme for an original PSHA at Mt. Etna, Italy.

Boncio, P., Liberi, F., Caldarella, M., and Nurminen, F.C.: Width of surface rupture zone for thrust earthquakes: implications for earthquake fault zoning, Nat. Hazards Earth Syst. Sci., 18, 241-256 OPEN ACCESS

Chartier, T., Scotti, O., Clément, C., Jomard, H., and Baize, S.: Transposing an active fault database into a fault-based seismic hazard assessment for nuclear facilities – Part 2: Impact of fault parameter uncertainties on a site-specific PSHA exercise in the Upper Rhine Graben, eastern France, Nat. Hazards Earth Syst. Sci., 17, 1585-1593 OPEN ACCESS

Garciá-Mayordomo, J., Martín-Banda, R., Insua-Arévalo, J.M., Álvarez-Gómez, J.A., Martínez-Diáz, J.J., and Cabral, J.: Active fault databases: building a bridge between earthquake geologists and seismic hazard practitioners, the case of the QAFI v.3 database, Nat. Hazards Earth Syst. Sci., 17, 1447-1459 OPEN ACCESS

Jomard, H., Marc Cushing, E., Palumbo, L., Baize, S., David, C. and Chartier, T.: Transposing an active fault database into a seismic hazard fault model for nuclear facilities – Part 1: Building a database of potentially active faults (BDFA) for metropolitan France, Nat. Hazards Earth Syst. Sci., 17, 1573-1584 OPEN ACCESS

Peruzza, L., Azzaro, R., Gee, R., D’Amico, S., Langer, H., Lombardo, G., Pace, B., Pagani, M., Panzera, F., Ordaz, M., Suarez, M. L., and Tusa, G.: When probabilistic seismic hazard climbs volcanoes: the Mt. Etna case, Italy – Part 2: Computational implementation and first results, Nat. Hazards Earth Syst. Sci., 17, 1999-2015 OPEN ACCESS

Keywords: Mt Etna volcano, seismic hazard

It is well known that volcanoes and earthquakes are associated, and some active volcanoes cause damaging earthquakes. Nonetheless, volcanoes usually are not pinpointed on a hazard map, as the effects of shallow, volcanic earthquakes can be overshadowed by stronger tectonic earthquakes in the region, particularly when long exposure periods are considered. In this study (Part 2, companion paper Part 1 Azzaro et al., above) we faced some challenges with software implementations and original concept scheme for an original PSHA at Mt. Etna, Italy.

Valentini, A., Visini, F., and Pace, B.: Integrating faults and past earthquakes into a probabilistic seismic hazard model for peninsular Italy, Nat. Hazards Earth Syst. Sci., 17, 2017-2039 OPEN ACCESS

Keywords: Italy, seismic hazard, fault sources

Italy is one of the most seismically active countries in Europe. Moderate to strong earthquakes, with magnitudes of up to ∼7, have been historically recorded for many active faults. In this study, the authors present the results of an alternative seismogenic source model for use in a probabilistic seismic hazard assessment for Italy that integrates active fault and seismological data.

2016

Yepes, H., Audin, L., Alvarado, A., Beauval, C., Aguilar, J., Font, Y., and Cotton, F.: A new view for the geodynamics of Ecuador: implication in seismogenic source definition and seismic hazard assessment, Tectonics, 35-5, 1249-1279.

Keywords: Ecuador, seismic hazard, interseismic coupling

A new view of Ecuador’s complex geodynamics has been developed in the course of modeling seismic source zones for probabilistic seismic hazard analysis. This study focuses on two aspects of the plates’ interaction at a continental scale: (a) age-related differences in rheology between Farallon and Nazca plates —marked by the Grijalva rifted margin and its inland projection—as they subduct underneath central Ecuador, and (b) the rapidly changing convergence obliquity resulting from the convex shape of the South American northwestern continental margin. Both conditions satisfactorily explain several characteristics of the observed seismicity and of the interseismic coupling.

2014

Beauval, C., Yepes, H., Audin, L., Alvarado, A., Nocquet, J.M., Monelli, D., and Danciu, L.: Probabilistic Seismic-Hazard Assessment in Quito, Estimates and Uncertainties, Seismological Research Letters, 85-6, 1316-1327.

Keywords: Ecuador, seismic hazard, uncertainties

PSH is estimated for Quito, capital of Ecuador. Different earthquake recurrence models are explored for the host zone controlling the hazard estimates, and the impact on hazard is determined. This host zone approximately delineates the Quito fault system. The first recurrence model considers historical earthquake catalog and rates for magnitudes 6-7 are obtained by extrapolation of moderate magnitude statistics. The second model is a MFD established from slip rates based on geodetic measurements, assuming that no creep occurs on the fault. In the third model, the fault is assumed to be partially locked. In the fourth model, occurrences of magnitudes 6-7 are restricted to the Quito fault plane. We show the impact of each decision on the hazard estimates and demonstrate the importance of taking into account faults in hazard calculations.