Gallée, H.; Pettré, P.; Schayes, G. (1996). Sudden Cessation of Katabatic Winds in Adélie Land, Antarctica. Journal of Applied Meteorology, 35(7), 1142–1152.
Abstract: The evolution of summer katabatic wind events over the steep slopes of Adélie Land is examined, with emphasis on the sudden cessation of these events. Different idealized large-scale forcings are considered, including a situation that comes very close to one observed during the IAGO (Interaction Atmosphère Glace Océan) campaign, held in the region in November–December 1985. The hydrostatic meso-?-scale atmospheric model MAR (Modèle Atmosphérique Régional) is used to assess the sensitivity of the simulated cessation process to a prescribed large-scale forcing.
Programme: 211
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Geoffroy, L.; Aubourg, C.; Callot, J.-P.; Barrat, J.-A. (2007). Mechanisms of crustal growth in large igneous provinces: The north Atlantic province as a case study. Geological Society of America Special Papers, 430, 747–774.
Abstract: The mechanisms of magma crust accretion at large igneous provinces (LIPs) are questioned using arguments based on the north Atlantic case. Published and new data on the calculated flow vectors within dike swarms feeding the early traps and subsequent seaward-dipping reflector lavas suggest that most of the mafic magmas forming the north Atlantic LIP transited through a small number of igneous centers. The magma was injected centrifugally in dike swarms at some distance away from individual igneous centers along the trend of the maximum horizontal stress acting in the crust, feeding lava piles via dikes intersecting the ground surface. This mechanism is similar to that observed in present-day Iceland and, more generally, in mafic volcano-tectonic systems. The absence of generalized vertical magma transit in a LIP has major geodynamic consequences. We cannot link the surface extent of LIP magmas to the dimensions of the mantle melting zone as proposed in former plume head models. The distribution of LIP magmas at the surface is primarily controlled by the regional stress field acting within the upper crust, but is also affected by magma viscosity. The igneous centers feeding LIPs most likely represent the crustal expression of small-scale convective cells of the buoyant mantle naturally located beneath the mechanical lithosphere.
Keywords: traps; volcanic margin; dike swarm; small-scale convection; AMS
Programme: 290
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Masson-Delmotte, V.; Hou, S.; Ekaykin, A.; Jouzel, J.; Aristarain, A.; Bernardo, R.T.; Bromwich, D.; Cattani, O.; Delmotte, M.; Falourd, S.; Frezzotti, M.; Gallée, H.; Genoni, L.; Isaksson, E.; Landais, A.; Helsen, M.M.; Hoffmann, G.; Lopez, J.; Morgan, V.; Motoyama, H.; Noone, D.; Oerter, H.; Petit, J.R.; Royer, A.; Uemura, R.; Schmidt, G.A.; Schlosser, E.; Simões, J.C.; Steig, E.J.; Stenni, B.; Stievenard, M.; van den Broeke, M.R.; van de Wal, R.S.W.; van de Berg, W.J.; Vimeux, F.; White, J.W.C. (2008). A Review of Antarctic Surface Snow Isotopic Composition: Observations, Atmospheric Circulation, and Isotopic Modeling*. Journal of climate, 21(13), 3359–3387.
Abstract: A database of surface Antarctic snow isotopic composition is constructed using available measurements, with an estimate of data quality and local variability. Although more than 1000 locations are documented, the spatial coverage remains uneven with a majority of sites located in specific areas of East Antarctica. The database is used to analyze the spatial variations in snow isotopic composition with respect to geographical characteristics (elevation, distance to the coast) and climatic features (temperature, accumulation) and with a focus on deuterium excess. The capacity of theoretical isotopic, regional, and general circulation atmospheric models (including “isotopic” models) to reproduce the observed features and assess the role of moisture advection in spatial deuterium excess fluctuations is analyzed.
Keywords: Snow; Antarctica; Atmospheric circulation; Isotopic analysis; In situ observations
Programme: 355;454
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Van De Vijver B., Denys L. & Beyens L. (2000). Fragilaria husvikensis sp. nov. (Bacillariophyceae), another Fragilaria species with transapical ribs from Subantarctica. Nova Hedwigia, , 537–550.
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Dubois J. (1997). Recherche des effets métaboliques des hormones thyroïdiennes chez deux espèces de manchots antarctiques(Pygoscelis adeliae et Ap.). Bachelor's thesis, , .
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Angelier J. & Bergerat F. (1997). The South Iceland Seismic zone – Part II: Stress fields and mecanisms of seismogenic faults..
Abstract: Abstr., Workshop Prenlab – 1, 24-25 octobre Paris
Programme: 316
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Guinard E., Weimreskirch H. & Jouventin P. (1998). Population changes and demography of the northern rockhopper penguin on Amsterdam and Saint Paul islands. Colonial waterbirds, 21(2), 222–228.
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Riaux-Gobin C., Treguer P. & Poulin M. (1997). Assemblages diatomiques épontiques et phytoplanctoniques en Terre Adélie (Antarctique) : biomass pigmentaires et facteurs de l'environnement..
Abstract: XVI Colloque de l'Associations des Diatomistes de Langue Française
Programme: 296
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Shum Woodworth A., Egbert F., King K., Le Provost L.I., Molines P.R., Schlax S. & Tierney V. (1997). Accuracy asessment of recent ocean tide models. J. Geophys. Res., 102(C11), 25173–25194.
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Salamatin A.N.. & Duval P. (1997). Creep flow and pressure relaxation in bubbly medium. International journal of solid structures, 34(1), 61–78.
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