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Thébault Julien, Chauvaud Laurent, L'Helguen Stéphane’, Clavier Jacques, Barats Aurélie, Jacquet Séverine, Pécheyran Christophe, Amouroux David, |
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Barium and molybdenum records in bivalve shells: Geochemical proxies for phytoplankton dynamics in coastal environments?
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Journal Article |
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2009 |
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LIMNOLOGY AND OCEANOGRAPHY |
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Limnol. Oceanogr. |
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54 |
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3 |
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1002-1014 |
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1090 |
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00243590 |
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yes |
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39 |
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Favier, V., Arnaud, L., Jourdain, B., Le Meur, E., Picard, G., Bréant, C., Landais, A., Legrand, M., Masson-Delmotte, V., Preunkert, S. |
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Title |
Asuma : un raid scientifique pour documenter la zone côtière de l’Antarctique. |
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Journal |
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2017 |
Publication |
La météorologie |
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7 |
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1154 |
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yes |
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6738 |
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Author |
Ricaud, Philippe |
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Title |
Variabilités de la vapeur d’eau et de la température troposphérique mesurées par le radiomètre micro-onde HAMSTRAD au Dôme C, Antarctique. Partie II : Résultats scientifiques |
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Journal Article |
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Year |
2014 |
Publication |
La Météorologie |
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85 |
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35-46 |
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The H2O Antarctica Microwave Stratospheric and Tropospheric Radiometers (HAMSTRAD) program aims to develop a ground-based microwave radiometer to measure tropospheric water vapor and temperature vertical profiles above the Dome C station, Concordia, Antarctica. The present article deals with the scientific results obtained with the vertical profiles of H2O and temperature from 0 to 10 km above the station coupled with other data sets (in situ, satellite, radiosonde, analyses and mesoscale model). The short-term variability (diurnal variation) has been studied in the lowermost troposphere according to the season to highlight the time evolution of the different sub-layers within the atmospheric boundary layer. Considering back-trajectory studies, the intra-seasonal variability of H2O and temperature in the troposphere comes mainly from the origin of air masses reaching the Dome C station, oceanic or continental, producing a high correlation rate between H2O and temperature. In a case study, a mesoscale model tends to calculate a wetter and warmer atmosphere than observations in the atmospheric boundary layer. |
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910 |
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0026-1181 |
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yes |
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4965 |
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Author |
Ricaud, Philippe |
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Title |
Variabilités de la vapeur d'eau et de la température troposphérique au Dôme C (station Concordia), Antarctique. Partie I : l'instrument Hamstrad |
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Journal Article |
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Year |
2014 |
Publication |
La Météorologie |
Abbreviated Journal |
0026-1181 |
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84 |
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15-28 |
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The H2O Antarctica Microwave Stratospheric and Tropospheric Radiometers (Hamstrad) program aims to develop a ground-based microwave radiometer to measure tropospheric water vapor and temperature vertical profiles above the Dome C station, Concordia, Antarctica (75°06'S, 123°21'E, 3233 m above mean sea level, amsl), one of the coldest and driest sites on the Earth. The project intends to study over a time frame greater than ten years the impact of climate change on the budget of atmospheric water vapor (H2O), a major greenhouse gas affecting directly and indirectly (through clouds) the Earth radiative balance. Operating at 60 GHz (dioxygen line to deduce temperature) and at 183 GHz (H2O line), the state-of-the-art radiometer has been installed on site in January 2009 (for 12 days) and is definitively operating since January 2010 after a validation phase at the Pic du Midi station (France) from February to June 2008. Hamstrad measurements can provide vertical profiles of H2Oand temperature from the ground to 10 km above the surface with a time resolution of 7 minutes and a vertical resolution of 30-50 m in the planetary boundary layer, 100 m in the free troposphere and 500 m in the upper troposphere-lower stratosphere. Since the instrument is sampling the diurnal cycle with a good resolution, it can help to validate measurements from spaceborne instruments and meteorological analyses. Systematic comparisons have been performed above Dome C with measurements from in situ sensors, radiosondes, spaceborne instruments such as the Infrared Atmospheric Sounder Interferometer (IASI) onboard the MetOp-A platform and the Atmospheric InfraRed Sounder (AIRS) onboard the Aqua plateform together with the analyses from the European Centre for Mediumrange Weather Forecast (ECMWF). Temperature and absolute humidity measurements fromHamstrad are of a great quality in the planetary boundary layer, degrading in the free troposphere to lose sensitivity in the upper troposphere-lower stratosphere. |
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910 |
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0026-1181 |
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yes |
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4964 |
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Author |
Torsten Wappler, Romain Garrouste, Michael S. Engel, André Nel |
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Title |
Wasp mimicry among Palaeocene reduviid bugs from Svalbard |
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Journal |
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Year |
2013 |
Publication |
Acta palaeontologica polonica |
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Volume |
58 |
Issue |
4 |
Pages |
883-887 |
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Programme |
1005 |
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05677920 |
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yes |
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8139 |
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Author |
F. Caza, S. Betoulle, M. Auffret, P. Brousseau, M. Fournier, Y. St-Pierre |
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Title |
Comparative sequence analysis of Hsp70 gene from Mytilus edulis desolationis and Aulacomya ater of the Kerguelen Islands |
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Journal |
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2017 |
Publication |
Journal of Xenobiotics |
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6 |
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2 |
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Aulacomya ater Hsp70 Kerguelen. mussels Mytilus desolationis |
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Abstract |
Not available |
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409 |
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2039-4713 |
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2039-4713 |
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yes |
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6852 |
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Author |
F. Caza, S. Betoulle, M. Auffret, P. Brousseau, M. Fournier, Y. St-Pierre |
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Title |
Comparative sequence analysis of Hsp70 gene from Mytilus edulis desolationis and Aulacomya ater of the Kerguelen Islands |
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2016 |
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Journal of Xenobiotics |
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Aulacomya ater Hsp70 Kerguelen. mussels Mytilus desolationis |
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409 |
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2039-4713 |
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2039-4713 |
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yes |
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7613 |
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Author |
Claudio A. González-Wevar, Mathias Hüne, Sebastián Rosenfeld, Karin Gérard, Andrés Mansilla, Elie Poulin |
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Title |
Patterns of genetic diversity and structure in antarctic and subantarctic Nacella (Nacellidae) species |
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Journal |
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2016 |
Publication |
Anales del Instituto de la Patagonia |
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44 |
Issue |
3 |
Pages |
49-64 |
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1044 |
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0718-686X |
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0718-686X |
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yes |
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6691 |
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Author |
Véronique Van Tilbeurgh, Anne Atlan |
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Title |
Pluralité des valeurs attribuées à la nature : le rôle des instances de socialisation primaire |
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Journal |
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Year |
2022 |
Publication |
VertigO – la revue électronique en sciences de l'environnement |
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22 |
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3 |
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îles subantarctiques instance de socialisation socialisation primaire valeurs de la nature |
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Alors qu’il existe une grande diversité de valeurs attribuées à la nature, les déterminants sociaux habituels, tels que la catégorie socio-professionnelle, l’âge ou le sexe, se sont avérés peu explicatifs. Cet article explore le rôle de la socialisation, et plus particulièrement de la socialisation primaire dans le type de valeur que les individus affectent à la nature. L’enquête s’est déroulée dans les îles subantarctiques, choisies car la nature y est valorisée dans un contexte non-utilitariste et non-marchand, ce qui permet l’expression d’un grand nombre de valeurs. Nous avons analysé les correspondances entre les formes de socialisation des individus à la nature et les valeurs qu’ils lui affectent. La principale distinction met en tension deux instances de socialisation primaire : au sein de la famille et par les groupes de pairs. Les premières conduisent à une évaluation de la nature suivant un principe dominant et abstrait, les secondes à une évaluation égalitaire et concrète. En revanche, ceux qui n’ont pas été socialisés à la nature durant l’enfance ont plutôt tendance à mettre en avant la valorisation d’eux-mêmes acquise par l’expérience de nature. Si les trajectoires linéaires sont largement majoritaires, des renforcements ou des altérations sont possibles, montrant que certaines formes de socialisation secondaire peuvent faire ou évoluer les valeurs attribuées à la nature. |
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136 |
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1492-8442 |
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yes |
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8547 |
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Author |
Emilie Portier, Denis Mercier, Armelle Decaulne |
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Title |
Spatial analysis and controlling factors of landslides in East Icelandic fjords |
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Journal |
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Year |
2023 |
Publication |
Géomorphologie : relief, processus, environnement |
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Volume |
29 |
Issue |
1 |
Pages |
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déglaciation glissements de terrain Islande paraglaciaire |
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Abstract |
Les fjords de l’est de l’Islande concentrent de nombreux glissements de terrain. Ces phénomènes visibles par observation à distance d’images satellites et d’un Modèle Numérique de Terrain (MNT) ont été inventoriés dans cette étude, puis mesurés et analysés. Au total, 290 glissements de terrain ont été recensés au sein d’une base de données sous forme de tableur et dans un Système d’Informations Géographiques (SIG). Pour chaque glissement de terrain ont été relevées sa localisation, sa morphométrie (longueur, largeur, superficie, épaisseur, volume estimé, etc.), ainsi que de potentielles variables de contrôle notamment géologiques (lithologie, pendage), ou explicatives (orientation, âge de la déglaciation du versant affecté par le glissement de terrain). Ces variables et leur répartition ont été étudiées par analyse spatiale et statistique. Cette étude met en avant une plus forte densité de glissements de terrain dans le nord de la zone étudiée, qui pourrait s’expliquer par les directions d’écoulement de la calotte glaciaire passée, qui auraient renforcé la pression exercée sur les versants entraînant le phénomène de décompression postglaciaire. Un autre constat est une surreprésentation de glissements orientés vers l’ouest et le sud, amenant l’hypothèse d’un contrôle climatique : les versants davantage ensoleillés auraient subi une déglaciation plus rapide favorisant l’instabilité des versants. Les données recueillies suggèrent également que la lithologie (basaltes tertiaires) est une variable de contrôle et que la période pendant laquelle la zone de glissement de terrain est déglacée est une variable explicative de l'initiation du glissement de terrain. Les glissements de terrain observés s’inscriraient ainsi dans une dynamique paraglaciaire d’instabilité des versants après leur déglaciation. |
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1266 |
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1266-5304 |
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9782913282988 |
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8662 |
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