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Author (up) A. Henry, E. V. Bezrukova, A. V. Teten’kin, M. I. Kuz’min
Title New Data on Vegetation and Climate Reconstruction in the Baikal-Patom Highland (Eastern Siberia) in the Last Glacial Maximum and Early Holocene Type Journal
Year 2018 Publication Doklady Earth Sciences Abbreviated Journal
Volume 478 Issue 2 Pages 241-244
Keywords
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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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1531-8354 ISBN 1531-8354 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 7241
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Author (up) A. Jaffal, N. Givaudan, S. Betoulle, A. Terreau, S. Paris-Palacios, S. Biagianti-Risbourg, E. Beall, H. Roche
Title Polychlorinated biphenyls in freshwater salmonids from the Kerguelen Islands in the Southern Ocean Type Journal
Year 2011 Publication Environmental Pollution Abbreviated Journal
Volume 159 Issue 5 Pages 1381-1389
Keywords Kerguelen Islands PCB accumulation Salmonids Sub-Antarctic area
Abstract The Subantarctic Kerguelen Islands (49°S, 70°E) contain freshwater ecosystems among the most isolated in the world. Concentrations of polychlorinated biphenyls (PCBs) were assessed in the muscle of 48 brook trout and 38 brown trout caught during summer and spring 2006 in the rivers, lakes and ponds of Kerguelen. The sum of 29 PCBs averaged 404 and 358ngg−1 lipid, and dioxin-like PCB was 19 and 69ngg−1 lipid, in brook and brown trout, respectively. The values showed a high variability and some fish accumulated PCBs at levels similar to those of fish from impacted areas. While inter-sex differences were limited, the season and the morphotype appeared to have the most influence. Fish captured in summer had muscle PCB concentrations about three times higher than those caught in spring and the ‘river’ morphotype of brook trout showed the highest PCB levels.
Programme 409
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Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0269-7491 ISBN 0269-7491 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 7438
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Author (up) A. Jaffal, S. Paris-Palacios, S. Jolly, A. F. Thailly, L. Delahaut, E. Beall, H. Roche, S. Biagianti-Risbourg, S. Betoulle
Title Cadmium and copper contents in a freshwater fish species (brook trout, Salvelinus fontinalis) from the subantarctic Kerguelen Islands Type Journal
Year 2011 Publication Polar biology Abbreviated Journal
Volume 34 Issue 3 Pages 397-409
Keywords Brook trout Cadmium Copper Freshwater salmonids Southern Ocean Subantarctic
Abstract The subantarctic Kerguelen Islands (49°S, 70°E) contain freshwaters among the most isolated in the world from direct human activities. Cadmium and copper concentrations were analyzed in muscle and liver tissues of 57 non-migratory brook trout (Salvelinus fontinalis) inhabiting the Sud River of Kerguelen Islands. The mean cadmium concentration in liver was 1.13 μg/g dry wt, within the range of levels measured in liver of marine fish from the Southern Ocean. Muscular Cd levels (0.12 μg/g dry wt) were roughly ten times higher than those measured in Kerguelen’s marine fish species. Copper levels were very high in the two organs (62.27 μg/g dry wt in liver and 3.02 μg/g dry wt in muscle) compared to those detected in fish from the Southern Ocean. Regarding the seasonal trend, the highest Cu and Cd muscular levels were measured in fish at the end of the austral winter, whereas the highest hepatic levels were observed at the end of the austral summer. Moreover, hepatic cadmium levels were higher in females than in males. These results could be related to brook trout spawning physiological preparations and foraging behavior during the summer period. We provide here the first results about Cu and Cd levels in liver and muscle of a freshwater fish species in an insular subantarctic context. They are in agreement with the high cadmium contamination found in fish of the Southern Ocean.
Programme 409
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1432-2056 ISBN 1432-2056 Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 7444
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Author (up) A. Jamelot, A. Gailler, Ph. Heinrich, A. Vallage, J. Champenois
Title Tsunami Simulations of the Sulawesi Mw 7.5 Event: Comparison of Seismic Sources Issued from a Tsunami Warning Context Versus Post-Event Finite Source Type Journal
Year 2019 Publication Pure and applied geophysics Abbreviated Journal
Volume 176 Issue Pages 3351-3376
Keywords numerical modelling strike-slip Sulawesi supershear Tsunami
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.
Programme 133
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Language Summary Language Original Title
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Series Volume Series Issue Edition
ISSN 0033-4553 ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 7886
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Author (up) A. Kokori, A. Tsiaras, B. Edwards, A. Jones, G. Pantelidou, G. Tinetti, L. Bewersdorff, A. Iliadou, Y. Jongen, G. Lekkas, A. Nastasi, E. Poultourtzidis, C. Sidiropoulos, F. Walter, A. Wünsche, R. Abraham, V. K. Agnihotri, R. Albanesi, E. Arce-Mansego, D. Arnot, M. Audejean, C. Aumasson, M. Bachschmidt, G. Baj, P. R. Barroy, A. A. Belinski, D. Bennett, P. Benni, K. Bernacki, L. Betti, A. Biagini, P. Bosch, P. Brandebourg, L. Brát, M. Bretton, S. M. Brincat, S. Brouillard, A. Bruzas, A. Bruzzone, R. A. Buckland, M. Caló, F. Campos, A. Carreño, J. A. Carrion Rodrigo, R. Casali, G. Casalnuovo, M. Cataneo, C.-M. Chang, L. Changeat, V. Chowdhury, R. Ciantini, M. Cilluffo, J.-F. Coliac, G. Conzo, M. Correa, G. Coulon, N. Crouzet, M. V. Crow, I. A. Curtis, D. Daniel, B. Dauchet, S. Dawes, M. Deldem, D. Deligeorgopoulos, G. Dransfield, R. Dymock, T. Eenmäe, N. Esseiva, P. Evans, C. Falco, R. G. Farfán, E. Fernández-Lajús, S. Ferratfiat, S. L. Ferreira, A. Ferretti, J. Fiołka, M. Fowler, S. R. Futcher, D. Gabellini, T. Gainey, J. Gaitan, P. Gajdoš, A. García-Sánchez, J. Garlitz, C. Gillier, C. Gison, J. Gonzales, D. Gorshanov, F. Grau Horta, G. Grivas, P. Guerra, T. Guillot, C. A. Haswell, T. Haymes, V.-P. Hentunen, K. Hills, K. Hose, T. Humbert, F. Hurter, T. Hynek, M. Irzyk, J. Jacobsen, A. L. Jannetta, K. Johnson, P. Jóźwik-Wabik, A. E. Kaeouach, W. Kang, H. Kiiskinen, T. Kim, Ü Kivila, B. Koch, U. Kolb, H. Kučáková, S.-P. Lai, D. Laloum, S. Lasota, L. A. Lewis, G.-I. Liakos, F. Libotte, F. Lomoz, C. Lopresti, R. Majewski, A. Malcher, M. Mallonn, M. Mannucci, A. Marchini, J.-M. Mari, A. Marino, G. Marino, J.-C. Mario, J.-B. Marquette, F. A. Martínez-Bravo, M. Mašek, P. Matassa, P. Michel, J. Michelet, M. Miller, E. Miny, D. Molina, T. Mollier, B. Monteleone, N. Montigiani, M. Morales-Aimar, F. Mortari, M. Morvan, L. V. Mugnai, G. Murawski, L. Naponiello, J.-L. Naudin, R. Naves, D. Néel, R. Neito, S. Neveu, A. Noschese, Y. Öğmen, O. Ohshima, Z. Orbanic, E. P. Pace, C. Pantacchini, N. I. Paschalis, C. Pereira, I. Peretto, V. Perroud, M. Phillips, P. Pintr, J.-B. Pioppa, J. Plazas, A. J. Poelarends, A. Popowicz, J. Purcell, N. Quinn, M. Raetz, D. Rees, F. Regembal, M. Rocchetto, P.-F. Rocci, M. Rockenbauer, R. Roth, L. Rousselot, X. Rubia, N. Ruocco, E. Russo, M. Salisbury, F. Salvaggio, A. Santos, J. Savage, F. Scaggiante, D. Sedita, S. Shadick, A. F. Silva, N. Sioulas, V. Školník, M. Smith, M. Smolka, A. Solmaz, N. Stanbury, D. Stouraitis, T.-G. Tan, M. Theusner, G. Thurston, F. P. Tifner, A. Tomacelli, A. Tomatis, J. Trnka, M. Tylšar, P. Valeau, J.-P. Vignes, A. Villa, A. Vives Sureda, K. Vora, M. Vrašt’ák, D. Walliang, B. Wenzel, D. E. Wright, R. Zambelli, M. Zhang, M. Zíbar
Title ExoClock Project. III. 450 New Exoplanet Ephemerides from Ground and Space Observations Type Journal
Year 2023 Publication The Astrophysical Journal Supplement Series Abbreviated Journal
Volume 265 Issue 1 Pages 4
Keywords
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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Language Summary Language Original Title
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Series Volume Series Issue Edition
ISSN 0067-0049 ISBN Medium
Area Expedition Conference
Notes Approved yes
Call Number Serial 8684
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Author (up) A. Maggi, JJ. Lévêque, M. Bes de Berc, JY. Thoré, G. Wittlinger, V. Farra
Title Seismology on ice plateaus : practical lessons learned from Concordia station (CCD) and the CASE-IPY experiment. Type Conference - International - Poster
Year 2010 Publication Abbreviated Journal
Volume Issue Pages
Keywords
Abstract ESC General Assembly, Montpellier, 2010
Programme 906
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Call Number Serial 102
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Author (up) A. Marchaudon et P.-L. Blelly
Title Modelling the E-region ionosphere following an X-class solar flare Type Conference - National - Communication
Year 2015 Publication Abbreviated Journal
Volume Issue Pages
Keywords
Abstract Conférence Nationale de l'URSI
Programme 312
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Notes Approved yes
Call Number Serial 6122
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Author (up) A. Marchaudon, A. Chambodut, C. Lathuillère, M. Menvielle
Title Subauroral magnetic activity during magnetic quiet periods as described using 15-minutes alpha magnetic index Type Conference - International - Communication
Year 2012 Publication Abbreviated Journal
Volume Issue Pages
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Abstract 26th IUGG general assembly 2015
Programme 139
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Call Number Serial 5699
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Author (up) A. Marchaudon, F. Pitout, K.-H. Trattner, M. O. Chandler
Title Cluster, Polar and SuperDARN simultaneous observations of cusp signatures in the northern and southern hemispheres Type Conference - International - Poster
Year 2015 Publication Abbreviated Journal
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Abstract SuperDARN International Workshop 2015
Programme 312
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Call Number Serial 6120
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Author (up) A. Marchaudon, P.-L. Blelly, M. Grandin, A. Aikio, A. Kozlovsky, I. Virtanen
Title IPIM Modeling of the Ionospheric F2 Layer Depletion at High Latitudes During a High-Speed Stream Event Type Journal
Year 2018 Publication Journal of Geophysical Research: Space Physics Abbreviated Journal
Volume 123 Issue 8 Pages 7051-7066
Keywords EISCAT high-speed stream ionosondes SuperDARN
Abstract Our aim is to understand the effect of high-speed stream events on the high-latitude ionosphere and more specifically the decrease of the foF2 frequency during the entire day following the impact. First, we have selected one summertime event, for which a large data set was available: Super Dual Auroral Radar Network (SuperDARN) and European Incoherent SCATter (EISCAT) radars, Tromsø and Sodankylä ionosondes, and the CHAllenging Minisatellite Payload (CHAMP) satellite. We modeled with the IPIM model (IRAP Plasmasphere Ionosphere Model) the dynamics of the ionosphere at Tromsø and Sodankylä using inputs derived from the data. The simulations nicely match the measurements made by the EISCAT radar and the ionosondes, and we showed that the decrease of foF2 is associated with a transition from F2 to F1 layer resulting from a decrease of neutral atomic oxygen concentration. Modeling showed that electrodynamics can explain short-term behavior on the scale of a few hours, but long-term behavior on the scale of a few days results from the perturbation induced in the atmosphere. Enhancement of convection is responsible for a sharp increase of the ion temperature by Joule heating, leading through chemistry to an immediate reduction of the F2 layer. Then, ion drag on neutrals is responsible for a rapid heating and expansion of the thermosphere. This expansion affects atomic oxygen through nonthermal upward flow, which results in a decrease of its concentration and amplifies the decrease of [O]/[N2] ratio. This thermospheric change explains long-term extinction of the F2 layer.
Programme 312
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ISSN 2169-9402 ISBN 2169-9402 Medium
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Notes Approved yes
Call Number Serial 7362
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