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Connan M., Cherel Y. & Mayzaud P. (2007). Lipids from stomach oil of procellariiform seabirds document the importance of myctophid fish in the Southern Ocean. Limnol. Oceanogr., 52, 2445–2455.
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Macelloni, G.; Brogioni, M.; Vey, S. (2007). Calibration of a ground based radiometer for a one-year experiment in antarctica : A contribution to SMOS calibration (Vol. Geoscience and Remote Sensing Symposium, 2007. IGA).
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Macelloni G., Paloscia S., Pampaloni P. & Santi E. (2003). Global scale monitoring of soil and vegetation using SSM/I and ERS wind scatterometer. International journal of remote sensing, 24(12), 2409–2425.
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Sturm, P., M. Leuenberger, J. Moncrieff, and M. Ramonet. (2005). Atmospheric O-2, CO2 and delta C-13 measurements from aircraft sampling over Griffin Forest, Perthshire, UK. Rapid Commun. Mass Spectrom., 19(17), 2399–2406.
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Marino F., G. Calzolai, S. Caporali, E. Castellano, M. Chiari, F. Lucarelli, V. Maggi, S. Nava, M. Sala, R. Udisti. (2008). PIXE and PIGE techniques for the analysis of Antarctic ice dust and continental sediments. Nuclear instruments and methods in physics research b, 266, 2396–2400.
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McCoy K.D., Chapuis E., Tirard C., Boulinier T., Michalakis Y., Le Bohec C., Le Maho. (2005). Recurrent evolution of host-specialized races in a globally-distributed parasite. Proc Biol Sci., 272(1579).
Abstract: The outcome of coevolutionary interactions is predicted to vary across landscapes depending on local conditions and levels of gene flow, with some populations evolving more extreme specializations than others. Using a globally distributed parasite of colonial seabirds, the tick Ixodes uriae, we examined how host availability and geographic isolation influences this process. In particular, we sampled ticks from 30 populations of six different seabird host species, three in the Southern Hemisphere and three in the Northern Hemisphere. We show that parasite races have evolved independently on hosts of both hemispheres. Moreover, the degree of differentiation between tick races varied spatially within each region and suggests that the divergence of tick races is an ongoing process that has occurred multiple times across isolated areas. As I. uriae is vector to the bacterium responsible for Lyme disease Borrelia burgdorferi sensu lato, these results may have important consequence for the epidemiology of this disease. With the increased occurrence of novel interspecific interactions due to global change, these results also stress the importance of the combined effects of gene flow and selection for parasite diversification.
Programme: 333;137
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. (2007). King penguins foraging in a dynamic marine environment. Proc. Biol. Sci., 274, 2385–2391.
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. (2007). Movements of foraging king penguins through marine mesoscale eddies. Proc. Biol. Sci., 274, 2385–2391.
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Debayle, E.; Sambridge, M. (2004). Inversion of massive surface wave data sets: Model construction and resolution assessment. J. Geophys. Res., 109, B02316.
Abstract: A new scheme is proposed for the inversion of surface waves using a continuous formulation of the inverse problem and the least squares criterion. Like some earlier schemes a Gaussian a priori covariance function controls the horizontal degree of smoothing in the inverted model, which minimizes some artifacts observed with spherical harmonic parameterizations. Unlike earlier schemes the new approach incorporates some sophisticated geometrical algorithms which dramatically increase computational efficiency and render possible the inversion of several tens of thousands of seismograms in few hours on a typical workstation. The new algorithm is also highly suited to parallelization which makes practical the inversion of data sets with more than 50,000 ray paths. The constraint on structural and anisotropic parameters is assessed using a new geometric approach based on Voronoi diagrams, polygonal cells covering the Earth's surface. The size of the Voronoi cells is used to give an indication of the length scale of the structures that can be resolved, while their shape provides information on the variation of azimuthal resolution. The efficiency of the scheme is illustrated with realistic uneven ray path configurations. A preliminary global tomographic model has been built for SV wave heterogeneities and azimuthal variations through the inversion of 24,124 fundamental and higher-mode Rayleigh waveforms. Our results suggest that the use of relatively short paths (<10,000 km) in a global inversion should minimize multipathing, or focusing/defocusing effects and provide lateral resolution of a few hundred kilometers across the globe.
Keywords: 7218 Seismology: Lithosphere and upper mantle; 7255 Seismology: Surface waves and free oscillations; 7260 Seismology: Theory and modeling; 8180 Tectonophysics: Tomography
Programme: 133;906
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Haan D., Martinerie P. & Raynaud D. (1996). Ice core data of atmospheric carbon monoxide over Antarctica and Greenland during the last 200 years. Geophysical research letters, 23(17), 2235–2238.
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