Rapid response to the M_w 4.9 earthquake of November 11, 2019 in Le Teil, Lower Rhône Valley, France

On November 11, 2019, a Mw 4.9 earthquake hit the region close to Montelimar (lower Rhône Valley, France), on the eastern margin of the Massif Central close to the external part of the Alps. Occuring in a moderate seismicity area, this earthquake is remarkable for its very shallow focal depth (between 1 and 3 km), its magnitude, and the moderate to large damages it produced in several villages. InSAR interferograms indicated a shallow rupture about 4 km long reaching the surface and the reactivation of the ancient NE-SW La Rouviere normal fault in reverse faulting in agreement with the present-day E-W compressional tectonics. The peculiarity of this earthquake together with a poor coverage of the epicentral region by permanent seismological and geodetic stations triggered the mobilisation of the French post-seismic unit and the broad French scientific community from various institutions, with the deployment of geophysical instruments (seismological and geodesic stations), geological field surveys, and field evaluation of the intensity of the earthquake. Within 7 days after the mainshock, 47 seismological stations were deployed in the epicentral area to improve the Le Teil aftershocks locations relative to the French permanent seismological network (RESIF), monitor the temporal and spatial evolution of microearthquakes close to the fault plane and temporal evolution of the seismic response of 3 damaged historical buildings, and to study suspected site effects and their influence in the distribution of seismic damage. This seismological dataset, completed by data owned by different institutions, was integrated in a homogeneous archive and distributed through FDSN web services by the RESIF data center. This dataset, together with observations of surface rupture evidences, geologic, geodetic and satellite data, will help to unravel the causes and rupture mechanism of this earthquake, and contribute to account in seismic hazard assessment for earthquakes along the major regional Cévenne fault system in a context of present-day compressional tectonics

Séisme du Teil, 11 novembre 2019, 11h52 heure locale (10h52 TU). Rapport préliminaire de la mission du Groupe d’intervention macrosismique du BCSF

On November 11, 2019 at 10:52 a.m., an earthquake of magnitude 5.2 shook the village of Le Teil, located a few kilometers from Montélimar. The Macro-seismic Intervention Group (G.I.M.) led by the French Central Seismological Office (BCSF) was mobilized in the field to estimate the macro-seismic intensities (EMS98 scale) in the epicentral zone. The EMS98 scale is a European scale, which makes it possible to measure the intensity of an earthquake as well as its severity and nature, here in the epicentral zone, i.e. in the land surface where the earthquake was most intense. This mission took place in the field from 18 to 22 November 2019. This G.I.M. preliminary report presents the context of the mission, the data and observations collected, and a map of the macro-seismic intensities of the earthquake.Le 11 novembre 2019 à 10h52, un séisme de magnitude 5.2 secoue le village du Teil, situé à quelques kilomètres de Montélimar. Le Groupe d’Intervention Macrosismique (G.I.M.) piloté par le Bureau central sismologique français (BCSF) s’est mobilisé sur le terrain afin d’estimer les intensités macrosismiques (échelle EMS98) dans la zone épicentrale. L’échelle EMS98 est une échelle européenne, qui permet de mesurer l’intensité d’un séisme ainsi que sa gravité et sa nature, ici dans la zone épicentrale, c’est-à-dire dans la surface terrestre où le séisme a été le plus intense. Cette mission s’est déroulée sur le terrain du 18 au 22 novembre 2019. Ce rapport préliminaire du G.I.M. présente le contexte de la mission, les données et observations recueillies, et une carte des intensités macrosismiques du séisme

: Rapport final d’expertise

Monitoring oceanic sharks bycaught by tuna purse seiners is of major importance for an appropriate assessment and management of these sensitive species. Electronic monitoring system (EMS) offers an opportunity to complement onboard observation for shark’s species monitoring, provided that cameras are well configurated to count and identify individuals on the deck. This study is evaluating the sharks’ observation gain of new cameras placed at strategic places (Funnel, Platform, Crow’s nest 2) onboard 4 equipped vessels with 3 different configurations. Six mixed trips were performed and EM shark’s data were compared to on board observation to evaluate camera performance and their benefit to the initial EMS configuration (Desk camera, Crow’s nest 1). Results shows that each additional camera increases shark’s observation compared the Desk camera. The Funnel camera was found the best camera in terms of counting and identifying the individuals at species level for all vessel configurations. The Crow’s nest 2 significantly increase observation of sharks on deck but is not able to identify species due to the distance. The Platform camera efficiency varies with vessel configuration and seems less powerful in terms of shark observation as it is located on the port side of the vessel where less sharks are released. The final analysis shows that one ideal option for optimizing sharks counting and identification on the upper deck would be to add both Crow’s nest 2 and Funnel cameras to the Desk camera with a higher resolution

EMS98 intensity estimation of the shallow Le Teil earthquake, ML 5.2, by Macroseismic Response Group GIM

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EMS98 intensities distribution of the “Le Teil” earthquake, France, 11 November 2019 (Mw 4.9) based on macroseismic surveys and field investigations

International audienceThe Le Teil earthquake (south France, 11-11-2019, Mw 4.9, 1 km depth, about 4 km of surface ruptures) was felt at a distance up to about 300 km. In order to estimate the EMS98 intensity in each of the affected localities, we collected macroseismic observations via individual forms filled in by citizens (2094 testimonies) or collective forms filled by authorities (388 localities) and by field survey work in the epicentral zone (24 most damaged cities). Field observations and communal surveys remain essential in the case of structural damage. Intensities deduced from public surveys are preliminary and their consideration in the final estimates must be limited. The maximum intensity observed is VII-VIII in Le Teil and 30 localities experienced an intensity ≥ VI. The earthquake generated damage (I ≥ V) up to about 50 km away and was felt in at least 568 localities

Rapport BCSF (2014) - Séisme de Barcelonnette (Alpes-de-Haute-Provence) du 7 avril 2014

This report is based on data provided by the services responsible for seismic monitoring in France (RéNaSS for the CNRS and the Universities, the ISTerre and Géoazur laboratories for the Universe Science Observatories, LDG for the CEA).The earthquake of April 7, 2014 occurred at 19:27 UT (21:26:59 local time) in the Alpes-de-Haute-Provence. Its epicentre is located approximately 6 km west southwest of the commune of Saint-Paul-sur-Ubaye and 11 km north of Barcelonnette, near the border of the departments of Alpes-de-Haute-Provence and Hautes-Alpes (Figure 1). The initiation of the rupture (hypocentre) is estimated at a depth of 11km below sea level (about 13km below the surface).This earthquake had an impact on the south-eastern quarter of France, i.e. 18 departments plus the Principality of Monaco. It has been noted by many residents as the strongest felt in the region in many years. At La Motte-en-Champsaur (yet 55 km from the epicentre) or Puy-Saint-Eusebe (22km) all the inhabitants went out to the village square to comment on this event, also fearing a more important replica.The mission of the French Central Seismological Office is to collect data on earthquakes felt in France, to collect useful information and to facilitate its dissemination to stakeholders concerned by seismic risk or conducting studies or research requiring the use of these observations.Ce rapport s'appuie sur les données communiquées par les services chargés de la surveillance sismique du territoire français (RéNaSS pour le CNRS et les Universités, les laboratoires ISTerre et Géoazur pour les observatoires des Sciences de l’Univers, LDG pour le CEA).Le séisme du 7 avril 2014 s’est produit à 19h27 TU (21h 26min 59sec heure locale) dans les Alpes- de-Haute-Provence. Son épicentre est situé à environ 6 km à l’Ouest Sud-Ouest de la commune de Saint-Paul-sur-Ubaye et 11km au Nord de Barcelonnette, à proximité de la limite des départements des Alpes-de-Haute-Provence et des Hautes-Alpes (figure 1). L’initiation de la rupture (hypocentre) est estimée à une profondeur de 11km sous le niveau de la mer (environ à 13 km de profondeur sous la surface du sol).Ce séisme a impacté par ses effets le quart sud-est de la France, soit 18 départements plus la Principauté de Monaco. Il a été noté par de nombreux habitant comme étant le plus fort jamais ressenti dans la région depuis de nombreuses années. À La Motte-en-Champsaur (pourtant à 55 km de l’épicentre) ou encore à Puy-Saint-Eusebe (22km) l’ensemble des habitants est sorti sur la place du village pour commenter cet événement, craignant aussi une réplique plus importante.Le Bureau Central Sismologique Français a pour mission de collecter les données sur les séismes ressentis en France, de rassembler les informations utiles et de faciliter leur diffusion vers les acteurs concernés par le risque sismique ou menant des études ou recherches nécessitant l’usage de ces observations

Synthesis and properties of push-pull porphyrins as sensitizers for NiO based dye-sensitized solar cells

In the above manuscript, the use of the porphyrin systems as sensitizers in nano-crystalline NiO-based photocathodes was mentioned in the main text instructing the reader to “see Experimental part for details”, however, this should read “see the electronic supplementary information (ESI) for details”.International audienceZinc porphyrins derivatives were prepared and investigated in NiO-based p-type dye sensitized solar cells. The first series consist of trans disubstituted push-pull porphyrins containing a nitrophenyl unit as electron withdrawing group and a benzoic acid unit as anchoring group. An ethynyl spacer was introduced between the porphyrin meso positions and the nitrophenyl or/and the benzoic acid. In a second series a secondary electron acceptor such as benzyl-viologen or a naphthalene diimide was appended to the porphyrin. All the compounds were characterized by absorption and emission spectroscopies, theoretical calculations and by electrochemistry. The fast charge recombination certainly limits the photovoltaic performances of the first series, which remain modest (Jsc ≈ 0.5 mA/cm 2 , Voc≈ 110 mV, ff ≈ 36% and PCE ≈ 0.02%) compared to highly performing sensitizers for NiO

儒家之無為觀

International audienceCorrection for ‘Synthesis and properties of push–pull porphyrins as sensitizers for NiO based dye-sensitized solar cells’ by Antoine Maufroy et al., J. Mater. Chem. A, 2015, 3, 3908–3917.In the above manuscript, the use of the porphyrin systems as sensitizers in nano-crystalline NiO-based photocathodes was mentioned in the main text instructing the reader to “see Experimental part for details”, however, this should read “see the electronic supplementary information (ESI) for details”. The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers