Editorial Expression of Concern: Coincident locations of rupture nucleation during the 2019 Le Teil earthquake, France and maximum stress change from local cement quarrying

Novellis, Vincenzo De; Convertito, Vincenzo; Valkaniotis, Sotiris; Casu, Francesco; Lanari, R.; Tobar, Mario Fernando Monterroso; Pino, Nicola Alessandro

doi:10.1038/s43247-020-00046-x

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The very small number of aftershocks, only four recorded by the LDG stations in November, raised questions in the scientific community about the anthropogenic or tectonic origin of this event, also due to the close location of the event to a quarry (De Novellis et al, 2020;Cornou et al, 2021).…”

Section: Le Teil (2019)mentioning

confidence: 99%

A decade of seismicity in metropolitan France (2010–2019): the CEA/LDG methodologies and observations

Duverger¹,

Mazet‐Roux²,

Bollinger³

et al. 2021

BSGF - Earth Sci. Bull.

View full text Add to dashboard Cite

We summarize ten years of the French seismicity recorded by the Geophysical and Detection Laboratory (LDG) of the French Alternative Energies and Atomic Energy Commission (CEA) network from 2010 to 2019. During this period, 25,279 natural earthquakes were detected by the LDG and located within metropolitan France and its immediate vicinity. This seismicity contributes to more than 47% of the natural earthquakes instrumentally recorded since 1962 (mainly due to the improvement of network capacity), and includes about 28% of the most significant earthquakes with a magnitude ML ≥ 4.0. Recent seismic events therefore significantly expand the available national catalogues. The spatial distribution of 2010-2019 earthquakes is broadly similar to the previous instrumental pattern of the seismicity, with most of the seismic activity concentrated in the French Alps, the Pyrenees, the Brittany, the upper Rhine Graben and the Central Massif. A large part of the seismic activity is related to the occurrence of individual events. The largest earthquakes of the last ten years include the November 11, 2019 Le Teil earthquake with ML 5.4 and maximal epicentral intensities VII to VIII, which occurred in the Rhone valley; the April 28, 2016 La Rochelle earthquake with ML 5.2 and epicentral intensity V, which occurred at the southernmost extremity of the Armorican Massif in the vicinity of the Oléron island; and the April 7, 2014 Barcelonnette earthquake with ML 5.1 and epicentral intensity VII, which occurred in the Ubaye valley in the Alps. In 2019, two other moderate earthquakes of ML 5.1 and ML 4.9 stroke the western part of France, in Charente-Maritime and Maine-et-Loire department, respectively. The recent moderate earthquake occurrences and the large number of small earthquakes recorded give both the potential to revise some regional historical events and to determine more robust frequency-magnitude distributions, which are critical for seismic hazard assessment but complex due to low seismicity rates in France. The LDG seismic network installed since the early 1960s also allows a better characterization of the temporal structure of seismicity, partly diffused and in the form of mainshock-aftershocks sequences or transient swarms. These aspects are important in order to lower the uncertainties associated to seismogenic sources and improve the models in seismic hazard assessment for metropolitan France.

show abstract

Section: Le Teil (2019)mentioning

confidence: 99%

A decade of seismicity in metropolitan France (2010–2019): the CEA/LDG methodologies and observations

Duverger¹,

Mazet‐Roux²,

Bollinger³

et al. 2021

BSGF - Earth Sci. Bull.

View full text Add to dashboard Cite

show abstract

Exceptional ground motion during the shallow Mw 4.9 2019 Le Teil earthquake, France

Causse

Cornou

Maufroy

et al. 2021

Commun Earth Environ

View full text Add to dashboard Cite

An unusually damaging Mw 4.9 earthquake occurred on November 11, 2019 in the south east of France within the lower Rhône river valley, an industrial region that hosts several operating nuclear power plants. The hypocentre of this event occurred at an exceptionally shallow depth of about 1 km. Here we use far-field seismological observations to demonstrate that the rupture properties are consistent with those commonly observed for large deeper earthquakes. In the absence of strong motion sensors in the fault vicinity, we perform numerical predictions of the ground acceleration on a virtual array of near-fault stations. These predictions are in agreement with independent quantitative estimations of ground acceleration from in-situ observations of displaced objects. Both numerical and in-situ analyses converge toward estimates of an exceptional level of ground acceleration in the fault vicinity, that locally exceeded gravity, and explain the unexpectedly significant damage.

show abstract

Editorial Expression of Concern: Coincident locations of rupture nucleation during the 2019 Le Teil earthquake, France and maximum stress change from local cement quarrying

Cited by 2 publications

References 0 publications

A decade of seismicity in metropolitan France (2010–2019): the CEA/LDG methodologies and observations

A decade of seismicity in metropolitan France (2010–2019): the CEA/LDG methodologies and observations

Exceptional ground motion during the shallow Mw 4.9 2019 Le Teil earthquake, France

Contact Info

Product

Resources

About