A
L
Last name: AUDIN
First name: Laurence
International audience
International audience
Abstract. Detrital 10Be from continental river sands or submarine sediments has been extensively used to determine the average long-term denudation rates of terrestrial catchments, based on the assumption that the rate of cosmogenic nuclide production by the interaction of source rocks with cosmic radiation balances out the loss of these...
Le 11 novembre 2019, un violent séisme de magnitude 5,4 sur l'échelle de Richter a secoué le sud de la France, fait trembler l'Ardèche et frémir Marseille comme Montpellier, faisant quatre blessés. L'épicentre, situé près de la ville du Teil, dans la vallée du Rhône, correspond à une zone densément peuplée avec de nombreuses installations...
River channels and hillslopes are shaped by the joint action of localized, vertical fluvial incision along the channel and of diffuse surface creep, landslides or rock falls on the adjacent slopes, the latter being often gathered under the generic term of hillslope processes. The interplay between river incision and hillslope processes is...
The Andean margin is one of the most active subduction zone worldwide (e.g., the1960 Mw 9.5 Chile or the Mw 8.8 1906 Ecuador earthquakes). We here proposethat the interseismic coupling along the Andean megathrust relates to spatialvariations along the interface as well as the fore-arc geology and inherited faultzones. For such matter, we...
Le 11 novembre 2019, le sud de la France a connu un séisme de magnitude de moment Mw 4.9 qui a fait trembler l'Ardèche et la Drôme, et qui a été ressenti jusqu'à Marseille et Montpellier. L'épicentre est situé près de la ville du Teil dans la vallée du Rhône, dans une zone densémentpeuplée avec de nombreuses installations industrielles dont...
On 11 November 2019, an Mw 4.9 earthquake struck the middle Rhône valley (South-East France) producing moderate to severe damage in the town of Le Teil and its surroundings. This unexpected event stressed the vulnerability of the French cultural built heritage to a moderate seismic hazard. Commonly applied to modern civil engineering...
No description
No description
Le 11 novembre 2019, un violent séisme de magnitude 5,4 sur l'échelle de Richter a secoué le sud de la France, fait trembler l'Ardèche et frémir Marseille comme Montpellier, faisant quatre blessés. L'épicentre, situé près de la ville du Teil, dans la vallée du Rhône, correspond à une zone densément peuplée avec de nombreuses installations...
International audience
We explore the coastal morphology along an uplifting 500 km-long coastal segment of the Central Andes, between the cities of Chala (Peru) and Arica (Chile). We use accurate DEM and field surveys to extract sequences of uplifted shorelines along the study area. In addition, we consider continental pediment surfaces that limit both the...
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...
International audience
International audience
The Rhône River Valley in France, a densely populated area with many industrial facilities including several nuclear power plants, was shaken on November 11th 2019, by the Mw 4.9 Le Teil earthquake. Here, we report field, seismological and interferometric syntheticaperture radar observations indicating that the earthquake occurred at a very...
Quito, the capital city of Ecuador hosting ∼2 million inhabitants, lies on the hanging wall of a ∼60-km-long reverse fault offsetting the Inter-Andean Valley in the northern Andes. Such an active fault poses a significant risk, enhanced by the high density of population and overall poor building construction quality. Here, we constrain the...
In Northern Andes, oblique subduction of the Nazca plate below the South America Plate induces a northward motion of the North Andean Sliver, at a rate of ~10 mm/yr with respect to Stable South America. In Ecuador in particular, the associated strain is mainly accomodated along the large Chingual-Cosanga-Puna-Pallatanga (CCPP) fault system,...
We explore the coastal morphology along an uplifting 500 km-long coastal segment of the Central Andes, between the cities of Chala (Peru) and Arica (Chile). We use accurate DEM and field surveys to extract sequences of uplifted shorelines along the study area. In addition, we consider continental pediment surfaces that limit both the...
Fluvial incision is one of the major erosive processes acting at Earth's surface and is highly sensitive to tectonic, isostatic and climatic variations. The aim of this study is to distinguish between the short-term climatic fluctuations versus the long-term tectonic forcing contribution to Late-Quaternary fluvial incision, to better understand...
Measurement of interseismic strain along subduction zones reveals the location of both locked asperities, which might rupture during megathrust earthquakes, and creeping zones, which tend to arrest such seismic ruptures. The heterogeneous pattern of interseismic coupling presumably relates to spatial variations of frictional properties along...
Measurement of interseismic strain along subduction zones reveals the location of both locked asperities, which might rupture during megathrust earthquakes, and creeping zones, which tend to arrest such seismic ruptures. The heterogeneous pattern of interseismic coupling relates to spatial variations of frictional properties along the...
Measurement of interseismic strain along subduction zones reveals the location of both locked asperities, which might rupture during megathrust earthquakes, and creeping zones, which tend to arrest such seismic ruptures. The heterogeneous pattern of interseismic coupling presumably relates to spatial variations of frictional properties along...