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. (2019). Towards Comprehensive Observing and Modeling Systems for Monitoring and Predicting Regional to Coastal Sea Level.
Abstract: A major challenge for managing impacts and implementing effective mitigation and adaptation strategies for coastal zones affected by future sea level (SL) rise is our very limited capacity to predict SL change on coastal scales, over various timescales. Predicting coastal SL requires the ability to monitor and simulate a multitude of physical processes affecting SL, from local effects of wind waves and river runoff to remote influences of the large-scale ocean circulation on the coast. Here we assess our current understanding of the causes of coastal SL variability on seasonal to multi-decadal timescales, including geodetic, oceanographic and atmospheric aspects of the problem, and review available observing systems informing on coastal SL. We also review the ability of current models and data assimilation systems to estimate coastal SL variations and of atmosphere-ocean global coupled models and related regional downscaling efforts to project future SL changes. We discuss (1) key observational gaps and uncertainties, and priorities for the development of an optimal and integrated coastal SL observing system, (2) strategies for advancing model capabilities in forecasting short-term processes and projecting long-term changes affecting coastal SL, and (3) possible future developments of sea level services enabling better connection of scientists and user communities and facilitating assessment and decision making for adaptation to future coastal SL change.
Keywords: coastal adaptation Coastal impacts coastal ocean modeling Coastal sea level integrated observing system observational gaps Sea level trends
Programme: 688
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. (2020). Towards ASTEP+, a two-color photometric telescope at Dome C, Antarctica (Vol. 11447).
Abstract: Dome C, Antarctica is unique in particular for long-duration astronomical observations due to the excellent weather conditions and nearly uninterrupted nights during the Southern winter period. The 40 cm telescope ASTEP has been operating successfully at the Concordia base, at Dome C, since 2010. We describe the new ASTEP+, a major upgrade of its camera box which will allow it to observe simultaneously in two colors. Approximately three times more photons will be collected for science, yielding more sensitive and accurate observations. The southern location of the telescope means that it is ideally located to follow-up exoplanetary targets in preparation for the future JWST and Ariel observations, in particular when located in the southern continuous viewing zones of these space-based telescopes.
Programme: 1066
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Crouzet N., et al. (2020). Towards ASTEP+, a two-color photometric telescope at Dome C, Antarctica (Vol. Paper 11447-23). Bachelor's thesis, , .
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Febvre, P., E. Pozzo di Borgo, A. Chambodut, C. Fourie, E. Saunderson, D. Gouws, S. Bernard, A. Cavaillou, J. Poupeney, D. Boyer, C. Sudre. (2012). Towards an international network of superconducting magnetometers for geomagnetic and Earth-Ionosphere studies.
Abstract: IDUST conference, Apt, France.
Programme: 139
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Febvre, P., E. Pozzo di Borgo, A. Chambodut, C. Fourie, E. Saunderson, D. Gouws, S. Bernard, A. Cavaillou, J. Poupeney, D. Boyer, C. Sudre . (2012). Towards an international network of superconducting magnetometers for geomagnetic and Earth-Ionosphere studies.
Abstract: IDUST conference, Apt, France.
Programme: 905
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Ferret Carole, . (2014). Towards an anthropology of action: From pastoral techniques to modes of action
. Journal of Material Culture , 19 (3 ), 279–302 .
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Crouzet N., et al. (2020). Towards a two-colour photometer at Dome C, Antartica.
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. (2012). Towards a model of postglacial biogeography in shallow marine species along the Patagonian Province: lessons from the limpet Nacella magellanica (Gmelin, 1791)
. BMC EVOLUTIONARY BIOLOGY, 12(1), 1–17.
Abstract: Background Patagonia extends for more than 84,000 km of irregular coasts is an area especially apt to evaluate how historic and contemporary processes influence the distribution and connectivity of shallow marine benthic organisms. The true limpet Nacella magellanica has a wide distribution in this province and represents a suitable model to infer the Quaternary glacial legacy on marine benthic organisms. This species inhabits ice-free rocky ecosystems, has a narrow bathymetric range and consequently should have been severely affected by recurrent glacial cycles during the Quaternary. We performed phylogeographic and demographic analyses of N. magellanica from 14 localities along its distribution in Pacific Patagonia, Atlantic Patagonia, and the Falkland/Malvinas Islands. Results Mitochondrial (COI) DNA analyses of 357 individuals of N. magellanica revealed an absence of genetic differentiation in the species with a single genetic unit along Pacific Patagonia. However, we detected significant genetic differences among three main groups named Pacific Patagonia, Atlantic Patagonia and Falkland/Malvinas Islands. Migration rate estimations indicated asymmetrical gene flow, primarily from Pacific Patagonia to Atlantic Patagonia (Nem=2.21) and the Falkland/Malvinas Islands (Nem=16.6). Demographic reconstruction in Pacific Patagonia suggests a recent recolonization process (< 10 ka) supported by neutrality tests, mismatch distribution and the median-joining haplotype genealogy. Conclusions Absence of genetic structure, a single dominant haplotype, lack of correlation between geographic and genetic distance, high estimated migration rates and the signal of recent demographic growth represent a large body of evidence supporting the hypothesis of rapid postglacial expansion in this species in Pacific Patagonia. This expansion could have been sustained by larval dispersal following the main current system in this area. Lower levels of genetic diversity in inland sea areas suggest that fjords and channels represent the areas most recently colonized by the species. Hence recolonization seems to follow a west to east direction to areas that were progressively deglaciated. Significant genetic differences among Pacific, Atlantic and Falkland/Malvinas Islands populations may be also explained through disparities in their respective glaciological and geological histories. The Falkland/Malvinas Islands, more than representing a glacial refugium for the species, seems to constitute a sink area considering the strong asymmetric gene flow detected from Pacific to Atlantic sectors. These results suggest that historical and contemporary processes represent the main factors shaping the modern biogeography of most shallow marine benthic invertebrates inhabiting the Patagonian Province.
Keywords: Animal Systematics/Taxonomy/Biogeography, Asymmetric gene flow, Cape horn current, Entomology, Evolutionary Biology, Expansion-contraction model, Falkland/Malvinas Islands, Genetics and Population Dynamics, Larval dispersal, Last glacial maximum, Life Sciences, general, Nacella magellanica, Patagonian Province, Post-glacial recolonization, Quaternary,
Programme: 1044
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. (2016). Towards a global higher-frequency sea level dataset (Vol. 3).
Abstract: This paper describes the assembly of an updated quasi-global dataset of higher-frequency sea level information obtained from tide gauges operated by many agencies around the world. We believe that the construction of such a dataset is fundamental to scientific research in sea level variability and also to practical aspects of coastal engineering. A first version of the dataset was used in approximately a dozen published studies, and this second version is about twice the size, containing longer and more geographically representative sea level records. The dataset has acquired a digital object identifier and may be obtained from several sources. The paper mentions some of the merits of and deficiencies with the present version and takes a forward look at how the dataset may be updated in the future.
Keywords: international data centres sea level data tide gauges
Programme: 688
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Le Provost C. & Lyard F. (1993). Towards a detailed knowledge of the world ocean tides: the example of the Kerguelen Plateau. Geophysical research letters, 20(14), 1519–1522.
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