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An intense seismic activity started in February 2023, close to Targu Jiu city, in the Oltenia region (Romania). The strongest events, characterized as doublet earthquakes, occurred on 13th and 14th February, the first shock with ML=5.2, and respectively the second shock with ML=5.7. These main shocks were followed by specific seismicity bursts (in the first week, about 800 foreshocks were registered). The focal depth of the events ranges from 1 to 20 km, most of them being situated in the 10-20 km depth interval. The area of interest is tectonically complex with various types of faults and it takes place at the contact between the Getic Depression, to the south, and the Southern Carpathians, to the north. The seismic sequence of Tg. Jiu occurred in the northern part of the Valea Motrului-Valea Oltetului area (part of Getic Depression) and is characterized by extensional faults, which show a general direction of ENE - WSW. The aims of this study are the estimation of the source parameters (MW, M0, f0), along with the focal mechanisms for events with ML≥3. For the seismic source delineated in Tg. Jiu area, the stress field has an extensional stress regime (σ1 almost vertical), with maximum horizontal stress (SHmax) oriented in the NW-SE direction. The resulting SHmax orientation and normal fault regime with a radial component (R′=0.5) are consistent with the observed geological setting. The results of this study are useful for assessing past and current tectonic activities and future research of the epicentral area., The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)

ObjectiveTo assess the availability and source of guidelines for common infections in European paediatric hospitals and determine their content and characteristics.DesignParticipating hospitals completed an online questionnaire on the availability and characteristics of antibiotic prescribing guidelines and on empirical antibiotic treatment including duration of therapy for 5 common infection syndromes: respiratory tract, urinary tract, skin and soft tissue, osteoarticular and sepsis in neonates and children.Results84 hospitals from 19 European countries participated in the survey of which 74 confirmed the existence of guidelines. Complete guidelines (existing guidelines for all requested infection syndromes) were reported by 20% of hospitals and the majority (71%) used a range of different sources. Guidelines most commonly available were those for urinary tract infection (UTI) (74%), neonatal sepsis (71%) and sepsis in children (65%). Penicillin and amoxicillin were the antibiotics most commonly recommended for respiratory tract infections (RTIs) (up to 76%), cephalosporin for UTI (up to 50%) and for skin and soft tissue infection (SSTI) and bone infection (20% and 30%, respectively). Antistaphylococcal penicillins were recommended for SSTIs and bone infections in 43% and 36%, respectively. Recommendations for neonatal sepsis included 20 different antibiotic combinations. Duration of therapy guidelines was mostly available for RTI and UTI (82%). A third of hospitals with guidelines for sepsis provided recommendations for length of therapy.ConclusionsComprehensive antibiotic guideline recommendations are generally lacking from European paediatric hospitals. We documented multiple antibiotics and combinations for most infections. Considerable improvement in the quality of guidelines and their evidence base is required, linking empirical therapy to resistance rates.