A. Chambodut and J.-J. Schott. (2010). Current status of permanent magnetic observatories in French Austral and Antartic Territories. Bachelor's thesis, , .
Abstract: The 5 permanent magnetic observatories of French Austral and Antarctic territories (Amsterdam, Concordia, Crozet, Dumont d'Urville and Kerguelen) are integrated as active participants in the worldwide network of magnetic observatories (INTERMAGNET), which monitor variations of the Earth's magnetic field at all time scales.Proceedings of i-DUST (INTER DISCIPLINARY UNDERGROUND SCIENCE AND TECHNOLOGY CONFERENCE), June 9-11 2010, Apt, France.
Programme: 139;905
|
|
. (2007). LONG LIVED MARTIAN GEOSCIENCE OBSERVATORY. Bachelor's thesis, , .
|
Bernard E., Tolle F., Griselin M., Friedt J. And Marlin C. (2011). Bachelor's thesis, , .
Abstract: 15th Alpine Glaciology Meeting, Munich, Germany, 24-25 fev. 2011
Programme: 304
|
Jourdain Bruno, Preunkert Susanne, Cerri Omar, Castebrunet Hlne, Udisti Roberto, Legrand Michel, . (2008). Year-round record of size-segregated aerosol composition in central Antarctica (Concordia station): Implications for the degree of fractionation of sea-salt particles
. J. Geophys. Res., 113(D14), D14308–.
Abstract: The origin of sea-salt aerosol that reaches the high Antarctic plateau and is trapped in snow and ice cores remains still unclear. In particular, the respective role of emissions from the open ocean versus those from the sea-ice surface is not yet quantified. To progress on this question, the composition of bulk and size-segregated aerosol was studied in 2006 at the Concordia station (75S, 123E) located on the high Antarctic plateau. A depletion of sulfate relative to sodium with respect to the seawater composition is observed on sea-salt aerosol reaching Concordia from April to September. That suggests that in winter, when the sea-salt atmospheric load reaches a maximum, emissions from the sea-ice surface significantly contribute to the sea-salt budget of inland Antarctica.
Keywords: Central Antarctica, size segregated aerosol, sea-salt fractionation, 0305 Atmospheric Composition and Structure: Aerosols and particles, 0345 Atmospheric Composition and Structure: Pollution: urban and regional, 4801 Oceanography: Biological and Chemical: Aerosols, 4906 Paleoceanography: Aerosols, 0368 Atmospheric Composition and Structure: Troposphere: constituent transport and chemistry, 9310 Geographic Location: Antarctica, 4207 Oceanography: General: Arctic and Antarctic oceanography, 3300 Atmospheric Processes,
Programme: 414;903;1181
|
Sciare J, Favez O, Sarda-Estve R, Oikonomou K, Cachier H, Kazan V, . (2009). Long-term observations of carbonaceous aerosols in the Austral Ocean atmosphere: Evidence of a biogenic marine organic source
. J. Geophys. Res., 114(D15), D15302–.
Keywords: organic aerosols, black carbon, biogenic aerosols, Austral Ocean, chlorophyll a, 0305 Atmospheric Composition and Structure: Aerosols and particles, 0365 Atmospheric Composition and Structure: Troposphere: composition and chemistry, 3339 Atmospheric Processes: Ocean/atmosphere interactions,
Programme: 414;415;416
|
Roderick G.K. & Vernon P. (2009). Biological invasions. Bachelor's thesis, , .
Abstract: In: Encyclopedia of Islands
(eds. Gillespie R.G. & Clague D.A.), University of California Press, Berkeley
Programme: 136
|
MAJ Emilie. (2009).1.
Abstract: About the evolution of worlddview and conception of landscape in Yakut culture:
Based on geographical and anthropological litterature and on the field data collected during the missions Ethnoequid 2003-2006 and Festivethno 2009.
Keywords: Landscape, Siberia, Republic Sakha (Yakutia), Sakha, Yakut, Siberian minoritites,Turkic people, semiotic, temporality, space, history, place, taiga, domestication
Programme: 1024
|
Chisham G, Freeman M P, Abel G A, Bristow W A, Marchaudon A, Ruohoniemi J M, Sofko G J, . (2009). Spatial distribution of average vorticity in the high-latitude ionosphere and its variation with interplanetary magnetic field direction and season
. J. Geophys. Res., 114(A9), A09301–.
Keywords: ionosphere, vorticity, field-aligned current, 2431 Ionosphere: Ionosphere/magnetosphere interactions, 2409 Ionosphere: Current systems, 2437 Ionosphere: Ionospheric dynamics, 2494 Ionosphere: Instruments and techniques, 2721 Magnetospheric Physics: Field-aligned currents and current systems,
Programme: 312;911
|
. (2009). What can we learn from HF signal scattered from a discrete arc?
. Ann. Geophys., 27(5), 1887–1896.
Abstract: We present observations of a discrete southward propagating arc which appeared in the mid-night sector at latitudes equatorward of main substorm activity. The arc observations were made simultaneously by the ALFA (Auroral Light Fine Analysis) optical camera, the SuperDARN-CUTLASS HF radar and the Demeter satellite during a coordinated multi-instrumental campaign conducted at the KEOPS/ESRANGE site in December 2006. The SuperDARN HF signal which is often lost in the regions of strong electron precipitation yields in our case clear backscatter from an isolated arc of weak intensity. Consequently we are able to study arc dynamics, the formation of meso-scale irregularities of the electron density along the arc, compare the arc motion with the convection of surrounding plasma and discuss the contribution of ionospheric ions in the arc erosion and its propagation.
Programme: 312;911
|
. (2009). Transcriptional analysis of skeletal muscle adaptations to marine life in king penguin juveniles (Aptenodytes patagonicus). FASEB JOURNAL, FASEB J(23), 629.5.
Abstract: King penguin chicks, that are strictly terrestrial during first year after hatching, must depart to sea to reach nutritional emancipation. Juvenile survival therefore depends on their adaptation to the energetic challenges of marine life: 1) harsh thermal environment, 2) long distant food resources, 3) repeated, deep and prolonged nutritional divings.
To elucidate these adaptations, the transcriptome of pectoralis muscle, the main thermogenic and locomotor tissue, was analysed in juveniles that had never been to sea (n=4) and in naturally adapted juveniles (n=3) by using chicken Affymetrix DNA chips (Profilexpert, Lyon).
Results showed the differential expression of nearly 3600 genes after marine life. Genes encoding enzymes of carbohydrate metabolism were down regulated while those encoding lipid transport and catabolism were up regulated suggesting an increased use of lipids as energy substrates. Further, transcripts encoding enzymes involved in cellular defense against reactive oxygen species and the associated injuries were also up regulated, suggesting an adaptive response against oxidative stress.
This study opens large perspectives to elucidate how king penguins can survive in an energetically unfavorable and pro-oxidative environment and what contributes to their remarkable longevity.
This study received the financial support of the French Polar Institut (IPEV).
Programme: 131
|
