60 research outputs found

    Les terres cuites architecturales comme sources d'information chronologique et technique des Ă©difices avant l'an mil

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    A partir de l'Ă©tude d'un Ă©difice phare de l'Ouest de la France (Église Notre-Dame sous Terre au Mont-Saint-Michel) mous montrons comment le couplage des Ă©tudes de bĂąti permettant l'identification d'ensembles maçonnĂ©s et leur chronologie relative, avec les mĂ©thodes de datation des terres cuites par thermoluminescence et archĂ©omagnĂ©tisme, et des charbons de mortier par radiocarbone, aboutit Ă  des informations particuliĂšrement novatrices sur la chronologie de la production des briques, leur Ă©ventuel remploi ou sur leur production ad nove, mais aussi, plus inattendu, sur des Ă©lĂ©ments technologiques de leur production. Les orientations actuelles des recherches mĂ©thodologiques pour la datation physique des structures bĂąties sont Ă©galement mises en perspectiv

    Altimetry for the future: Building on 25 years of progress

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    In 2018 we celebrated 25 years of development of radar altimetry, and the progress achieved by this methodology in the fields of global and coastal oceanography, hydrology, geodesy and cryospheric sciences. Many symbolic major events have celebrated these developments, e.g., in Venice, Italy, the 15th (2006) and 20th (2012) years of progress and more recently, in 2018, in Ponta Delgada, Portugal, 25 Years of Progress in Radar Altimetry. On this latter occasion it was decided to collect contributions of scientists, engineers and managers involved in the worldwide altimetry community to depict the state of altimetry and propose recommendations for the altimetry of the future. This paper summarizes contributions and recommendations that were collected and provides guidance for future mission design, research activities, and sustainable operational radar altimetry data exploitation. Recommendations provided are fundamental for optimizing further scientific and operational advances of oceanographic observations by altimetry, including requirements for spatial and temporal resolution of altimetric measurements, their accuracy and continuity. There are also new challenges and new openings mentioned in the paper that are particularly crucial for observations at higher latitudes, for coastal oceanography, for cryospheric studies and for hydrology. The paper starts with a general introduction followed by a section on Earth System Science including Ocean Dynamics, Sea Level, the Coastal Ocean, Hydrology, the Cryosphere and Polar Oceans and the ‘‘Green” Ocean, extending the frontier from biogeochemistry to marine ecology. Applications are described in a subsequent section, which covers Operational Oceanography, Weather, Hurricane Wave and Wind Forecasting, Climate projection. Instruments’ development and satellite missions’ evolutions are described in a fourth section. A fifth section covers the key observations that altimeters provide and their potential complements, from other Earth observation measurements to in situ data. Section 6 identifies the data and methods and provides some accuracy and resolution requirements for the wet tropospheric correction, the orbit and other geodetic requirements, the Mean Sea Surface, Geoid and Mean Dynamic Topography, Calibration and Validation, data accuracy, data access and handling (including the DUACS system). Section 7 brings a transversal view on scales, integration, artificial intelligence, and capacity building (education and training). Section 8 reviews the programmatic issues followed by a conclusion

    Altimetry for the future: building on 25 years of progress

    Get PDF
    In 2018 we celebrated 25 years of development of radar altimetry, and the progress achieved by this methodology in the fields of global and coastal oceanography, hydrology, geodesy and cryospheric sciences. Many symbolic major events have celebrated these developments, e.g., in Venice, Italy, the 15th (2006) and 20th (2012) years of progress and more recently, in 2018, in Ponta Delgada, Portugal, 25 Years of Progress in Radar Altimetry. On this latter occasion it was decided to collect contributions of scientists, engineers and managers involved in the worldwide altimetry community to depict the state of altimetry and propose recommendations for the altimetry of the future. This paper summarizes contributions and recommendations that were collected and provides guidance for future mission design, research activities, and sustainable operational radar altimetry data exploitation. Recommendations provided are fundamental for optimizing further scientific and operational advances of oceanographic observations by altimetry, including requirements for spatial and temporal resolution of altimetric measurements, their accuracy and continuity. There are also new challenges and new openings mentioned in the paper that are particularly crucial for observations at higher latitudes, for coastal oceanography, for cryospheric studies and for hydrology. The paper starts with a general introduction followed by a section on Earth System Science including Ocean Dynamics, Sea Level, the Coastal Ocean, Hydrology, the Cryosphere and Polar Oceans and the “Green” Ocean, extending the frontier from biogeochemistry to marine ecology. Applications are described in a subsequent section, which covers Operational Oceanography, Weather, Hurricane Wave and Wind Forecasting, Climate projection. Instruments’ development and satellite missions’ evolutions are described in a fourth section. A fifth section covers the key observations that altimeters provide and their potential complements, from other Earth observation measurements to in situ data. Section 6 identifies the data and methods and provides some accuracy and resolution requirements for the wet tropospheric correction, the orbit and other geodetic requirements, the Mean Sea Surface, Geoid and Mean Dynamic Topography, Calibration and Validation, data accuracy, data access and handling (including the DUACS system). Section 7 brings a transversal view on scales, integration, artificial intelligence, and capacity building (education and training). Section 8 reviews the programmatic issues followed by a conclusion

    Du cep Ă  la table royale : Ă©tat et vins campaniens sous les premiers Angevins

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    vol. 1 Errico Cuozzo, Vincent DĂ©roche, Annick Peters-Custot et Vivien PrigentInternational audienc

    Application des méthodes de datation physique à l'archéologie du bùti

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    L'intĂ©gration des mĂ©thodes de datation des matĂ©riaux de construction Ă  l'archĂ©ologie du bĂąti permet d'envisager des gains informatifs qualitatif et quantitatif pour l'histoire de la construction des bĂątiments. Afin d'examiner la chronologie de monuments historiques et de considĂ©rer la question de l'origine de leurs matĂ©riaux de construction, un groupe de recherche CNRS europĂ©en (GdRE) intitulĂ© "Terres cuites architecturales et nouvelles mĂ©thodes de datation" s'est impliquĂ© dans l'Ă©tude archĂ©ologique d'Ă©difices mĂ©diĂ©vaux situĂ©s autour de l'an mil, en France, en Italie et en Angleterre, et prĂ©sentant des Ă©lĂ©ments de terre cuite dans leurs maçonneries. L'objectif de ce GdRE est de rassembler diffĂ©rents spĂ©cialistes pour former une Ă©quipe pluridisciplinaire, qui comprend des archĂ©ologues, historiens d'art et chronologues français, italiens et anglais. Parmi les mĂ©thodes de datation physique proposĂ©es, l'utilisation croisĂ©e des analyses par luminescence et par archĂ©omagnĂ©tisme appliquĂ©es aux terres cuites architecturales (TCA), couplĂ©es au radiocarbone pratiquĂ© sur les charbons de bois retrouvĂ©s dans les mortiers, permet de nouvelles propositions sur l'utilisation des briques dans les structures architecturales et peut Ă©galement informer sur certaines modalitĂ©s de leur production. Dans certains cas, il devient possible de prĂ©ciser la chronologie des Ă©difices permettant parfois mĂȘme de remettre en cause l'attribution chronologique traditionnelle basĂ©e sur des sources textuelles ou sur une approche chrono-morphologique

    Application des méthodes de datation physique à l'archéologie du bùti

    No full text
    L'intĂ©gration des mĂ©thodes de datation des matĂ©riaux de construction Ă  l'archĂ©ologie du bĂąti permet d'envisager des gains informatifs qualitatif et quantitatif pour l'histoire de la construction des bĂątiments. Afin d'examiner la chronologie de monuments historiques et de considĂ©rer la question de l'origine de leurs matĂ©riaux de construction, un groupe de recherche CNRS europĂ©en (GdRE) intitulĂ© "Terres cuites architecturales et nouvelles mĂ©thodes de datation" s'est impliquĂ© dans l'Ă©tude archĂ©ologique d'Ă©difices mĂ©diĂ©vaux situĂ©s autour de l'an mil, en France, en Italie et en Angleterre, et prĂ©sentant des Ă©lĂ©ments de terre cuite dans leurs maçonneries. L'objectif de ce GdRE est de rassembler diffĂ©rents spĂ©cialistes pour former une Ă©quipe pluridisciplinaire, qui comprend des archĂ©ologues, historiens d'art et chronologues français, italiens et anglais. Parmi les mĂ©thodes de datation physique proposĂ©es, l'utilisation croisĂ©e des analyses par luminescence et par archĂ©omagnĂ©tisme appliquĂ©es aux terres cuites architecturales (TCA), couplĂ©es au radiocarbone pratiquĂ© sur les charbons de bois retrouvĂ©s dans les mortiers, permet de nouvelles propositions sur l'utilisation des briques dans les structures architecturales et peut Ă©galement informer sur certaines modalitĂ©s de leur production. Dans certains cas, il devient possible de prĂ©ciser la chronologie des Ă©difices permettant parfois mĂȘme de remettre en cause l'attribution chronologique traditionnelle basĂ©e sur des sources textuelles ou sur une approche chrono-morphologique
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