On the use of the radon transform in studying wave dynamics
In nearshore studies, there is an increasing interest for describing wave-by-wave dynamics. Most existing methods compute bulk parameters for celerity and the separation of incoming and outgoing waves. In this paper we address the use of the Radon Transform for studying wave dynamics. The Radon Transform is a projection of a bidimensional field (e.g. spatiotemporal wave signal) into polar coordinates which can be back projected at given angles. The method is applied to laboratory low-sloping beach and non-linear waves GLOBEX dataset. The separation of incoming from outgoing long waves using Radon is tested and compared to the method described in Guza et al., (1984). Components are retrieved, even at standing long wave nodes. Individual short wave celerity derived from Radon is found in agreement with celerity derived from tracked individual crest.
(pp. 73-82, 29/08/2026)
LEGOS, IRD, UT3, Comue de Toulouse, INSU - CNRS, CNES, CNRS, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS, LEGI, UJF, Grenoble INP, CNRS, PUC, IMAU
Fate of micropollutants through various types of biofilm reactors
The present work details the results of a comprehensive study dealing with 127 priority and emerging micropollutants through various attached-growth biomass processes: rotating biodiscs, trickling filter, submerged biofilters. The research work involved powerful and sensitive analytical techniques to measure micropollutants concentrations in wastewaters in order to calculate robust removals by the various types of treatment and evaluate released micropollutant fluxes. This work also allowed pointing out the micropollutants that would require further treatment or source control.
(pp. 4, 29/08/2026)
UR MALY, IRSTEA, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS
Observations of waves' impact on currents in a mixed-energy tidal inlet : Arcachon on the southern French Atlantic coast
Coastal morphodynamic processes around tidal inlets in mixed-energy environments are particularly complex due to severe tide and wave conditions. Collecting data in this area is generally very challenging . Here we present the first hydrodynamic data collected in the outer inlet of the Arcachon lagoon, a mixed-energy inlet situated on the southern part of the French Atlantic coast. Data consist in vertical current profiles and sea surface elevations collected on the offshore edge of the ebb delta under various tidal and wave conditions. In particular data were collected during the severe Joachim storm associated to wave heights up to 8 m. Preliminary results indicate that current profiles, intensities and direction are very sensitive to wave conditions. Under energetic conditions, the vertical profile of currents become uniform and the longshore drift is enhanced (up to 1.5 m/s). Nevertheless data show that under severe wave conditions (Hm0> 6.0m) and despite high incidence of waves, the longshore drift is weaker (l< 1 m/s) than under ‘usual’ storm conditions associated to Hm 0= 4–5m. More surprisingly, directions of the longshore drift are not always consistent with wave incidence under those severe storm conditions and the cross-shore components are very weak while under less energetic conditions we observe intense offshore currents(upto 0.8 m/s).
(Journal of Coastal Research, n° 0749-0208, pp. p. 2053-2058, 29/08/2026)
EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS, PRODIG, UP1, IRD, EPHE, PSL, UP4, UPD7, CNRS, SHOM
Optical properties and asymmetric flow field-flow fractionation of dissolved organic matter from the arcachon bay (French Atlantic Coast)
Fluorescence excitation-emission matrix (EEM) spectroscopy was used to investigate spatial and temporal variability in the optical properties of dissolved organic matter in the Arcachon Bay and its main tributaries. Seasonal effects and different trends in composition as well as in size of dissolved organic matter (DOM) were observed for samples collected from the Arcachon lagoon. We do not observe such a variability for the samples collected from the nine main tributaries of the Arcachon Bay. DOM quality was however specific for each tributary site. \textcopyright 2013 Zhejiang University Press and Springer Science+Business Media Dordrecht. All rights are reserved.
(. vol. 9789400756342, pp. 153--158, 29/08/2026)
EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS
UPLC MS/MS Quantification of Primary Metabolites of Benzo[a]pyrene and Fluoranthene Produced In Vitro by Sole (Solea sola) Liver Microsomal Activation
Biotransformation pathways of PAHs in a flat fish, Solea solea, living in nurseries close to coastal areas and estuaries constitute a great challenge for the environmental risk. Among PAHs, Fluoranthene (Fluo) has a different chemical structure than benzo[a]pyrene (BaP), and can influence its biotransformation pathways and genotoxic potential. The aim of this study was to bring some response elements about the in vitro metabolic activation of Fluo and BaP by sole liver microsomes. The quantification of several primary metabolites of BaP and Fluo produced in vitro, following a sole liver microsomal activation, was conducted using a sensitive analytical UPLC MS/MS method. Four types of BaP metabolites (dihydrodiols, diones, OH-BaP, and 7,8-dihydroepoxide), and three types of Fluo metabolites (2,3-dihydrodiol, 2,3-dione, and sum of OH-Fluo) were quantified. The concentration for which the metabolite production was maximal was of 40 μM and 100 μM for BaP and Fluo, respectively. The biotransformation rate was higher for Fluo (9.97%) than for BaP (6.69%).Whatever the PAH, dihydrodiols and phenols were the major metabolites produced accounting for, respectively, 50% and 30–40% for BaP, and 40 and 60% for Fluo. Despite some differences in conformation, both PAHs seem to be activated by similar pathways and the diol-epoxide appears as a predominant one.
(Polycyclic Aromatic Compounds. vol. 33, n° 1040-6638, pp. 52-71, 29/08/2026)
BE, IFREMER, LPTC, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS
France National Report 2012, ICES Working Group on Introduction and Transfers of Marine Organisms
(29/08/2026)
EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS, UNICAEN, NU, IFREMER, LIENSs, INSU - CNRS, ULR, CNRS, SBR, UPMC, CNRS
Long term effects of polycyclic aromatic hydrocarbons on zebrafish behavioral and reproduction responses
(29/08/2026)
BE, IFREMER, UB, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS, LRHLR, HGS, IFREMER, LPGP, INRA, Biosit : Biologie - Santé - Innovation Technologique
Global biomass burning : a synthesis and review of Holocene paleofire records and their controls
(Quaternary Science Reviews. vol. 65, n° 0277-3791, pp. 5-25, 29/08/2026)
PACEA, UB, CNRS, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS, SAGES, UOR, CPCC, UOR, OCCR, UNIBE, UNIBE, LCE, CNRS, UMLP, UBFC
Benthic and Planktic Foraminifera as Indicators of Late Glacial to Holocene Paleoclimatic Changes in a Marginal Environment: An Example from the Southeastern Bay of Biscay.
Benthic and planktic foraminiferal assemblages from two sediment cores (2,000 m depth, 44 degrees 33'N, 2 degrees 45'W) were analyzed to first compare modern and dead faunas and next to study changes in the hydrology of the southeastern Bay of Biscay (SE BoB) over the last 12.8 cal ka BP. Considering benthic ecosystem characteristics, the first part of the paleorecord (12.8-7.6 cal ka BP) is composed of laminated sediments that may have resulted from turbiditic overflow events, whereas occurrences of transported species (e. g. Nonionella sp., Cassidulina carinata) attest of continental influence at the core location. After 7.6 cal ka BP, the sediment becomes bioturbated concomitantly to the stabilization of the sea-level. The benthic foraminiferal fauna is largely dominated by Uvigerina peregrina suggesting a high seasonality with seasonal pulsed organic matter fluxes to the seafloor. On the other hand, the planktic foraminiferal composition indicates that surface water masses were under the influence of the polar front in the early record, which retreated at about 11.5 cal ka BP. The early Holocene is characterized by relatively warm and stratified water masses at 8.4-4.8 cal ka BP. The last 4.8 cal ka BP records a gradual sea surface water cooling trend and enhanced foraminiferal production from similar to 2.6 cal ka BP until present. The early (12.8-10.5 cal ka BP) and late (2.3-1.7 cal ka BP) Holocene are characterized by the presence of the planktic species Globigerinoides ruber probably caused by intrusions of the Iberian Poleward Current (IPC), and a negative state of the North Atlantic Oscillation (NAO).
(Acta Protozoologica. vol. 52, n° 0065-1583, pp. 161-180, 29/08/2026)
BIAF, UA, LSCE, UVSQ, INSU - CNRS, CNRS, DRF (CEA), CEA, PALEOCEAN, LSCE, UVSQ, INSU - CNRS, CNRS, DRF (CEA), CEA, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS
Carbon and suspended sediment transport in an impounded alpine river (Isère, France)
Carbon and total suspended sediment (TSS) loads were investigated from April 2006 to March 2008 in the mountainous watershed of the Isère River, French Alps (5570 km2). The river bed has been highly impounded for hydroelectricity production during the last century. Hydraulic flushes are managed every year to prevent TSS storage within upstream dams. The Isère River has been instrumented for high-frequency monitoring of water, TSS by turbidity and carbon (organic, inorganic, dissolved and particulate) in order to evaluate the impact of natural floods and hydraulic flushes on annual loads. Annual TSS load which was estimated between 1.3 and 2.3 MT y−1 (i.e. 233 to 413 T km−2 y−1) highlighted the high erodibility of the Isère watershed. Annual carbon load was estimated between 173 103 T y−1 and 199 103 T y−1 (i.e 31 to 36 T km−2 y−1). About 80% of the annual carbon loads were inorganic. The impact of hydraulic flushes on annual loads appeared limited (less than 3% for annual TSS load and about 1.5% for annual carbon load), whereas the most important natural flood event contributed to 20% of the annual TSS load and 10% of the annual carbon load.
(Hydrological Processes. vol. 27, n° 0885-6087, pp. 2498-2508, 29/08/2026)
LTHE, OSUG, UJF, Grenoble INP, INSU - CNRS, IRSTEA, USMB [Université de Savoie] [Université de Chambéry], CNRS, IRD, INSU - CNRS, INPG, CNRS, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS, ISTO, BRGM, INSU - CNRS, UO, CNRS, SISYPHE, UPMC, EPHE, PSL, PSL, CNRS, EDF [E.D.F.]