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. (2018). New Data on Vegetation and Climate Reconstruction in the Baikal-Patom Highland (Eastern Siberia) in the Last Glacial Maximum and Early Holocene (Vol. 478).
Abstract: The first results of anthracological investigation for Eastern Siberia on the carbonaceous remains of woody and shrubby plants at the archaeological sites Kovrizhka III and IV in the lower reaches of the Vitim River are presented. The results of anthracological studies enabled us to obtain new data on changes in vegetation and climate along the lower reaches of the Vitim River. As a result, new data on human habitation in the lower reaches of the Vitim River in the last glacial maximum and early Holocene were obtained.
Programme: 1140
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A. Jaffal, N. Givaudan, S. Betoulle, A. Terreau, S. Paris-Palacios, S. Biagianti-Risbourg, E. Beall, H. Roche. (2011). Polychlorinated biphenyls in freshwater salmonids from the Kerguelen Islands in the Southern Ocean (Vol. 159).
Keywords: Kerguelen Islands PCB accumulation Salmonids Sub-Antarctic area
Programme: 409
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A. Jaffal, S. Paris-Palacios, S. Jolly, A. F. Thailly, L. Delahaut, E. Beall, H. Roche, S. Biagianti-Risbourg, S. Betoulle. (2011). Cadmium and copper contents in a freshwater fish species (brook trout, Salvelinus fontinalis) from the subantarctic Kerguelen Islands (Vol. 34).
Keywords: Brook trout Cadmium Copper Freshwater salmonids Southern Ocean Subantarctic
Programme: 409
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A. Jamelot, A. Gailler, Ph. Heinrich, A. Vallage, J. Champenois. (2019). Tsunami Simulations of the Sulawesi Mw 7.5 Event: Comparison of Seismic Sources Issued from a Tsunami Warning Context Versus Post-Event Finite Source (Vol. 176).
Abstract: The 28 September 2018 Sulawesi earthquake generated a much larger tsunami than expected from its Mw = 7.5 magnitude and from its dominant strike-slip mechanism. Within a few minutes after the earthquake, the tsunami devastated the seafront of Palu bay, destroying houses and infrastructures over a few hundred meters. Coastal subsidence and slumping at various locations around the bay were also observed. There is debate in the scientific community as to whether submarine landslides and shore collapses contributed to the generation of strong and destructive waves locally. The objective of this study is threefold: first, to determine whether standard seismic inversions could predict the source in the context of tsunami early warning; second, to define a new seismic source built from optical image correlation and based on the geological and tectonic context; third, to assess whether the earthquake alone is able to generate up to 9-m wave heights at the coast. Numerical simulations of the tsunami propagation are performed for different seismic dislocation sources. Nonlinear shallow water equations are solved by a finite-difference method in grids with 200-m and 10-m resolutions. The early CMT focal solutions calculated by seismological institutes show dominant strike-slip mechanisms with a homogenous slip distribution. These sources produce maximum tsunami heights of 40-cm on the coast of Palu city. Two heterogeneous sources are tested and compared: the USGS “finite fault” model calculated from seismic inversion and a new “hybrid” source inferred from different techniques. The latter is based on a segmented fault in agreement with the geological context and built from both from seismic parameters of a CMT solution and the observed horizontal ground displacements. This source produces water wave heights of 4 to 5-m in the Palu bay. The observed inundation heights and distances are reproduced satisfactorily by the model at Pantoloan and at the southwestern tip of Palu bay. However, the “hybrid” source is unable to reproduce the largest 8 to 12-m water heights as reported from field surveys. Thus, even though this “hybrid” source produces most of the reported tsunami energy, we cannot exclude that the numerous coastal collapses observed in Palu bay contributed to increase the local tsunami run-up.
Keywords: numerical modelling strike-slip Sulawesi supershear Tsunami
Programme: 133
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. (2023). ExoClock Project. III. 450 New Exoplanet Ephemerides from Ground and Space Observations (Vol. 265).
Abstract: The ExoClock project has been created to increase the efficiency of the Ariel mission. It will achieve this by continuously monitoring and updating the ephemerides of Ariel candidates, in order to produce a consistent catalog of reliable and precise ephemerides. This work presents a homogenous catalog of updated ephemerides for 450 planets, generated by the integration of ?18,000 data points from multiple sources. These sources include observations from ground-based telescopes (the ExoClock network and the Exoplanet Transit Database), midtime values from the literature, and light curves from space telescopes (Kepler, K2, and TESS). With all the above, we manage to collect observations for half of the postdiscovery years (median), with data that have a median uncertainty less than 1 minute. In comparison with the literature, the ephemerides generated by the project are more precise and less biased. More than 40% of the initial literature ephemerides had to be updated to reach the goals of the project, as they were either of low precision or drifting. Moreover, the integrated approach of the project enables both the monitoring of the majority of the Ariel candidates (95%), and also the identification of missing data. These results highlight the need for continuous monitoring to increase the observing coverage of the candidate planets. Finally, the extended observing coverage of planets allows us to detect trends (transit-timing variations) for a sample of 19 planets. All the products, data, and codes used in this work are open and accessible to the wider scientific community.
Programme: 1066
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. (2010). Seismology on ice plateaus : practical lessons learned from Concordia station (CCD) and the CASE-IPY experiment..
Abstract: ESC General Assembly, Montpellier, 2010
Programme: 906
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A. Marchaudon et P.-L. Blelly. (2015). Modelling the E-region ionosphere following an X-class solar flare.
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. (2012). Subauroral magnetic activity during magnetic quiet periods as described using 15-minutes alpha magnetic index.
Abstract: 26th IUGG general assembly 2015
Programme: 139
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A. Marchaudon, F. Pitout, K.-H. Trattner, M. O. Chandler. (2015). Cluster, Polar and SuperDARN simultaneous observations of cusp signatures in the northern and southern hemispheres.
Abstract: SuperDARN International Workshop 2015
Programme: 312
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A. Marchaudon, P.-L. Blelly, M. Grandin, A. Aikio, A. Kozlovsky, I. Virtanen. (2018). IPIM Modeling of the Ionospheric F2 Layer Depletion at High Latitudes During a High-Speed Stream Event (Vol. 123).
Keywords: EISCAT high-speed stream ionosondes SuperDARN
Programme: 312
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