32 results on '"Simon, François-Xavier"'
Search Results
2. Origin and Holocene geomorphological evolution of the landslide-dammed basin of la Narse de la Sauvetat (Massif Central, France)
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Mayoral, Alfredo, Peiry, Jean-Luc, Berger, Jean-François, Simon, François-Xavier, Vautier, Franck, and Miras, Yannick
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- 2018
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3. A Regional Approach to Ancient Urban Studies in Greece Through Multi-Settlement Geophysical Survey
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Donati, Jamieson C., Sarris, Apostolos, Papadopoulos, Nikos, Kalaycı, Tuna, Simon, François-Xavier, Manataki, Meropi, Moffat, Ian, and Cuenca-García, Carmen
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- 2017
4. Exploration archéologique de 170 hectares de plaine maritime (Bourbourg, Saint-Georges-sur-l’Aa, Craywick, Nord de la France) : restitution de la fermeture d’un estuaire au Moyen Âge et mise en évidence de mares endiguées
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Deschodt Laurent, Lançon Mathieu, Desoutter Samuel, Hulin Guillaume, Simon François-Xavier, Vanwalscappel Bruno, Créteur Yves, Broes Frédéric, Devred Véronique, Favier Dominique, and Le Bayon Anne-Lise
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estuaire ,aa ,géophysique ,structure excavée ,moyen-âge ,paléoenvironnement ,Geology ,QE1-996.5 - Abstract
Dans le cadre de l’agrandissement du port de Dunkerque, plus de 170 hectares de la plaine maritime ont été explorés sur la future « Zone Grande Industrie », dans l’ancien estuaire de la Denna (ou Déna, ou L’Enna), sous-bassin du petite fleuve côtier Aa. Le diagnostic d’archéologie préventive classique par ouverture de tranchées a été accompagnée de recherches en archives, de prospections géophysiques, de levés géomorphologiques en sondages en puits (profonds de 3 m) et en coupes. L’intégration des études de nature différente permet d’aboutir à une compréhension du secteur meilleure que ne l’eût fait chaque discipline séparément. Les dépôts sont essentiellement des sables tidaux recoupés par des chenaux de marée. Les décimètres supérieurs sont parfois plus limoneux. Les mesures de conductivité apparente permettent de spatialiser les données lithostratigraphiques ponctuelles. Leur confrontation, ainsi que des indices venant du réseau parcellaire, permet la mise en évidence d’un bord ouest de l’estuaire, contemporain d’occupations humaines. De même, la confrontation des vestiges archéologiques levés lors du diagnostic avec une zonation basée sur la géophysique et la stratigraphie permet d’appréhender l’évolution du paysage, notamment l’expansion et la contraction de l’habitat du secteur, depuis les premières interventions aux environs des Xe–XIIe siècles sur la bordure ouest de l’estuaire. Depuis ce dernier, l’habitat a progressé vers le nord-est, jusqu’à un bras de la Denna resté longtemps actif et dont l’axe correspond au système de drainage actuel. La cartographie de conductivité électrique permet également de mettre en évidence des anomalies qui se sont révélées être de larges et profondes structures anthropiques (jusqu’à environ 40 m de diamètre et plus de 5 m de profondeur, soit −2,5 m sous la cote zéro). Bien que nombreuses, ces structures peuvent passer facilement inaperçues lors des diagnostics archéologiques. Plusieurs ont été testées. Leur remplissage est variable mais présente comme point commun une étanchéification du fond et des parois par des mottes d’argile. Ces structures sont interprétées comme des mares endiguées dont quelques exemples subsistent sur la côte de la mer du Nord (en Frise, en Zélande et en Allemagne). Elles permettaient de recueillir l’eau douce et leur couronne de remblais en élévation s’élevaient au-dessus des plus fortes marées.
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- 2021
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5. Mapping of quadrature magnetic susceptibility/magnetic viscosity of soils by using multi-frequency EMI
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Simon, François-Xavier, Sarris, Apostolos, Thiesson, Julien, and Tabbagh, Alain
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- 2015
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6. Slingram EMI prospection: Are vertical orientated devices a suitable solution in archaeological and pedological prospection?
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Thiesson, Julien, Rousselle, Gabrielle, Simon, François Xavier, and Tabbagh, Alain
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- 2011
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7. Organogelators from self-assembling peptide based dendrimers: structural and morphological features
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Palui, Goutam, Simon, François-Xavier, Schmutz, Marc, Mesini, Philippe J., and Banerjee, Arindam
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- 2008
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8. Inrap and geophysics: towards a sustainable approach
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Hulin, Guillaume, Simon, François-Xavier, Simon, François-Xavier, Institut national de recherches archéologiques préventives (Inrap), Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)
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[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory ,[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory - Abstract
The policy and practice of preventive archaeology is well established in France. By far the main methodology applied is trial trenching surveying, both for prospection and evaluation. Within this preventive archaeology process in France most of the fieldwork is done by Inrap, the National Institute for Preventive Archaeology. The integration of geophysical prospection within this preventive process remains rather limited up to date, despite a fairly large number of experiments with these techniques. However, within the last few years Inrap is systematically applying geophysical surveys, although always with specific goals and research frameworks. The main goals within these survey projects are: the detection of archaeological features; palaeolandscape reconstructions; and the mapping and characterization of archaeological layers during excavations. A durable approach, regarding cost-efficiency and scientific robustness of the applied methods, is of high importance within this approach. To allow this, Inrap recently established a team for geophysical prospection., Samenvatting Het beleid rond preventieve archeologie in Frankrijk is reeds vele jaren goed ingeburgerd. Als veldpraktijk wordt hierbij, net als in Vlaanderen, voornamelijk ingezet op proefsleuven om projectzones archeologisch te evalueren. Binnen de preventieve archeologie is het nationaal instituut voor erfgoedonderzoek (INRAP) met 2000 archeologische studies per jaar (ca. 1800 evaluaties en 200 opgravingen) de absolute koploper. De integratie van geofysische technieken bij zulk evaluatieonderzoek blijft, ondanks een lange traditie van (experimentele) toepassingen in de Franse archeologie, beperkt. Sinds kort brengt een meer systematische toepassing van geofysische methodes bij INRAP daarin verandering. Door vergelijkingen met proefsleuvenonderzoek, en het gebruik van geofysische prospectie voor en tijdens opgravingscampagnes, streeft INRAP naar een meer duurzame en beredeneerde implementatie van deze technieken. De voornaamste toepassingen zijn te groeperen in: de detectie van archeologische sporen; de prospectie en reconstructie van begraven landschappen; en de karakterisering van archeologische lagen in opgegraven oppervlakken. Hierbij staat telkens de combinatie van een kostenefficiënte en wetenschappelijk meer robuuste archeologische methodologie voorop. Om dit mogelijk te maken, werd recent bij INRAP een geofysisch team opgericht dat, met het oog op verdere uitbreiding, deze evolutie in goede banen leidt.
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- 2019
9. A Short Literature on Joint Inversion Methods in Geophysics
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Simirdanis, Kleanthis, Simon, François-Xavier, Oikonomou, Dimitri, Papadoupoulos, Nikos, and Simon, François-Xavier
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[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory ,literature review ,cross-gradient ,[SDU.STU.GP] Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] ,joint inversion - Abstract
Joint inversion is a geophysical approach on simultaneously inverting multiple data sets on the assumption that the sought parameters are influenced by common subsurface physical and/or hydrological property fields. Many are the data combinations among the type of data that are used for joint inversion: electrical resistivity with seismic, cross-hole electrical resistance with ground penetrating radar, magnetotelluric and seismic traveltime data, seismic with gravity and electromagnetic data, to name a few. The following literature review is structured chronologically according to the publication date of the studies.
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- 2019
10. Ground-Based and Satellite-Imaging Technologies for Mapping the Ancient Settlement of Gortyn, Crete
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Sarris, Apostolos, Codini, Giorgia, Manataki, Meropi, Donati, Jamieson, Simon, François-Xavier, Sythiakaki, Vasso, Zanini, Enrico, Lab GeoSat ReSeArch, IMS-FORTH, Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Institut national de recherches archéologiques préventives (Inrap), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), and Simon, François-Xavier
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[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory ,[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
- Published
- 2016
11. Geophysical and Photogrammetric Measurements at the Fortezza Castle of Rethymnon (Crete)
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Sarris, Apostolos, Papadopoulos, Nikos G, Cantoro, Gianluca, Manataki, Meropi, Cuenca-García, Carmen, Kalayci, Tuna, Giapitsoglou, Kostas, Karamaliki, Nota, Simon, François-Xavier, Tzigounaki, Anastasia, Reicherter, Klaus, Röth, Joschka, Baika, Kalliopi, Vött, Andreas, Fischer, Peter, Simirdanis, Kleanthis, Donati, Jamieson, Lab GeoSat ReSeArch, IMS-FORTH, Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Institut national de recherches archéologiques préventives (Inrap), and Simon, François-Xavier
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[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory ,[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
- Published
- 2016
12. 3-D imaging of subsurface magnetic permeability/susceptibility with portable frequency domain electromagnetic sensors for near surface exploration.
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Guillemoteau, Julien, Simon, François-Xavier, Hulin, Guillaume, Dousteyssier, Bertrand, Dacko, Marion, and Tronicke, Jens
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THREE-dimensional imaging , *MAGNETIC permeability , *BIG data , *ELECTROMAGNETIC induction , *MAGNETIC susceptibility , *ELECTROMAGNETIC theory , *MAGNETOOPTICS - Abstract
The in-phase response collected by portable loop–loop electromagnetic induction (EMI) sensors operating at low and moderate induction numbers (≤1) is typically used for sensing the magnetic permeability (or susceptibility) of the subsurface. This is due to the fact that the in-phase response contains a small induction fraction and a preponderant induced magnetization fraction. The magnetization fraction follows the magneto-static equations similarly to the magnetic method but with an active magnetic source. The use of an active source offers the possibility to collect data with several loop–loop configurations, which illuminate the subsurface with different sensitivity patterns. Such multiconfiguration soundings thereby allows the imaging of subsurface magnetic permeability/susceptibility variations through an inversion procedure. This method is not affected by the remnant magnetization and theoretically overcomes the classical depth ambiguity generally encountered with passive geomagnetic data. To invert multiconfiguration in-phase data sets, we propose a novel methodology based on a full-grid 3-D multichannel deconvolution (MCD) procedure. This method allows us to invert large data sets (e.g. consisting of more than a hundred thousand of data points) for a dense voxel-based 3-D model of magnetic susceptibility subject to smoothness constraints. In this study, we first present and discuss synthetic examples of our imaging procedure, which aim at simulating realistic conditions. Finally, we demonstrate the applicability of our method to field data collected across an archaeological site in Auvergne (France) to image the foundations of a Gallo-Roman villa built with basalt rock material. Our synthetic and field data examples demonstrate the potential of the proposed inversion procedure offering new and complementary ways to interpret data sets collected with modern EMI instruments. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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13. Joint Interpretation of shallow EMI resistivity and magnetic susceptibility measurements using rapid 1D/3D inversion
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Benech, Christophe, Dabas, Michel, Simon, François Xavier, Tabbagh, Alain, Thiesson, Julien, Maison de l'Orient et de la Méditerranée - Jean Pouilloux (MOM), École normale supérieure de Lyon (ENS de Lyon)-Université Lumière - Lyon 2 (UL2)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon-Aix Marseille Université (AMU)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), Celtes et Etrusques : identités, pouvoirs, échanges, Archéologie et Philologie d'Orient et d'Occident (AOROC), École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Département des Sciences de l'Antiquité - ENS Paris (DSA ENS-PSL), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL), Maison des Sciences de l'Homme de Clermont-Ferrand (MSH Clermont), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Centre National de la Recherche Scientifique (CNRS), Milieux Environnementaux, Transferts et Interactions dans les hydrosystèmes et les Sols (METIS), Université Pierre et Marie Curie - Paris 6 (UPMC)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Lyon (ENS Lyon)-Aix Marseille Université (AMU)-Université Jean Monnet [Saint-Étienne] (UJM)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon-Université Lumière - Lyon 2 (UL2), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC), Université Lumière - Lyon 2 (UL2)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Dabas, Michel, École normale supérieure - Paris (ENS Paris)-École pratique des hautes études (EPHE)-Centre National de la Recherche Scientifique (CNRS)-Paris Sciences et Lettres (PSL)-École normale supérieure - Paris (ENS Paris)-École pratique des hautes études (EPHE)-Centre National de la Recherche Scientifique (CNRS)-Paris Sciences et Lettres (PSL), École normale supérieure - Paris (ENS Paris)-École pratique des hautes études (EPHE)-Centre National de la Recherche Scientifique (CNRS)-Paris Sciences et Lettres (PSL), Maison des Sciences de l'Homme - Clermont Ferrand (MSH Clermont), and Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE)-Université Pierre et Marie Curie - Paris 6 (UPMC)
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resistivity ,[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory ,[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory ,magnetic measurements ,ComputingMilieux_MISCELLANEOUS ,Interpretation of shallow - Abstract
International audience
- Published
- 2016
14. Geoarchaeology and chronostratigraphy of the Lac du Puy intraurban protohistoric wetland, Corent, France.
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Mayoral, Alfredo, Peiry, Jean‐Luc, Berger, Jean‐François, Ledger, Paul M., Depreux, Bruno, Simon, François‐Xavier, Milcent, Pierre‐Yves, Poux, Matthieu, Vautier, Franck, and Miras, Yannick
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ARCHAEOLOGICAL geology ,CHRONOSTRATIGRAPHY ,NEOLITHIC Period ,GEOPHYSICAL surveys ,CLAY soils - Abstract
Abstract: This paper presents the first results of the geoarchaeological study of an unusual hilltop wetland, located within the protohistoric proto‐urban site of Corent in the French Massif Central. This small depression offers an exceptionally local sedimentary record that provided valuable data on long‐term human–environment interactions, as well as proto‐urbanization of the first millennium B.C.E. Field survey revealed a major archaeological discovery: a large ensemble of 114 Iron Age storage pits excavated in clayey deposits. The geoarchaeological analysis of stratigraphic logs and cross‐sections completed by geophysical survey and radiocarbon dating allowed us to refine the chronology of these structures. Here, we suggest these structures are probably contemporary with the Hallstatt occupation of the site (600–425 B.C.E.), consistent with the emergence at Corent of a short‐lived proto‐urban environment during this period. These investigations also allowed us to characterize the main evolution phases of the basin and the diversity of human impacts from first disturbance in the Early Neolithic to its final destruction in the Roman period. These findings highlight the nonlinear nature of the socio‐environmental interactions and the definitive shift to an “anthroposystem” as a consequence of major disturbance in the first Iron Age, centuries before the development of urban settlements in the oppida period. [ABSTRACT FROM AUTHOR]
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- 2018
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15. Investigating Magnetic Ghosts on an Early Middle Age Settlement: Comparison of Data from Stripped and Non-stripped Areas
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Simon, François-Xavier, Koziol, Agnieszka, Thiesson, Julien, Structure et fonctionnement des systèmes hydriques continentaux (SISYPHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-École Pratique des Hautes Études (EPHE), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Mines Paris - PSL (École nationale supérieure des mines de Paris)
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Magnetic susceptibility ,magnetic ghost ,topsoil stripping ,early Middle Ages ,electromagnetic ,magnetic ,[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory ,[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] - Abstract
International audience; Statute laws concerning preventative archaeology adopted in France in 2001 for threatened sites required development of evaluation techniques. The common methodology used during the past 10?years has been extensive excavation. This method delivers a direct record of the discovered archaeological features and of their distribution. However, the success of visual observation can be variable, depending on geological context and the feasibility of envisaging the entire archaeological settlement from the part that is observed. We report here a case study from an early Middle Age settlement located on a floodplain. It was partially excavated and the alluvial context makes the features difficult to recognize for archaeologists. We show how the geophysical survey complemented the archaeological survey and allowed the detection of previously unrecognized features. In a second step, we compare the results of surveys with magnetic and electromagnetic methods on a topsoil stripped area and the neighbouring surface. From this analysis we conclude that a significant part of the unrecognized features discovered were present above the level of stripping. This example underlines that the practice of topsoil stripping has to be reconsidered, and should be integrated with geophysical survey to limit the potential loss of archaeological information. Copyright (C) 2012 John Wiley & Sons, Ltd.
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- 2012
16. Magnetic signal prospecting using multi parameter measurements : the case study of the Gallic site of Levroux
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Petronille, Marie, Thiesson, Julien, Simon, François-Xavier, Buchsenschutz, Olivier, Tabbagh, Alain, Institut de Physique du Globe de Paris (IPGP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), UFR 918 Terre - environnement - Biodiversité, Structure et fonctionnement des systèmes hydriques continentaux (SISYPHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Protohistoire celtique, Archéologies d'Orient et d'Occident et Sciences des textes (AOROC), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Mines Paris - PSL (École nationale supérieure des mines de Paris), Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-École Pratique des Hautes Études (EPHE), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École Pratique des Hautes Études (EPHE), and Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL)
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Levroux (en) ,[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory ,Paleomagnetic dating (en) ,Archéomagnétisme ,Levroux ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
- Published
- 2010
17. A Manifold Approach for the Investigation of Early and Middle Neolithic Settlements in Thessaly, Greece.
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Kalayci, Tuna, Simon, François-Xavier, and Sarris, Apostolos
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NEOLITHIC Period ,GEOPHYSICS ,ELECTROMAGNETIC induction - Abstract
The IGEAN (Innovative Geophysical Approaches for the study of Early Agricultural villages of Neolithic) Thessaly project focused on Early and Neolithic settlements in Thessaly, Central Greece. The aim of the project was to highlight in an extensive way differences in settlement layouts while investigating commonalities as a way to understand Neolithic use of space. To accomplish this, a suite of geophysical prospection techniques (geomagnetic, electromagnetic induction, and Ground Penetrating Radar (GPR)), aerial platforms (historic aerial imagery and Remotely Piloted Aerial Systems (RPAS)) as well as very high resolution spaceborne sensors were integrated to acquire comprehensive pictures of settlements. Results of the IGEAN project provide archaeological information on the dynamic character of enclosures, the structure of architectural features and open spaces within sites as an indication of economic or communal spaces. At the same time, they demonstrated the importance of employing a suite of different geophysical techniques to reveal different aspects of the hindered prehistoric settlements that could not be highlighted with a single geophysical approach. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
18. The Highest Gradient Model: A New Method for Analytical Assessment of the Efficiency of LiDAR-Derived Visualization Techniques for Landform Detection and Mapping.
- Author
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Mayoral, Alfredo, Toumazet, Jean-Pierre, Simon, François-Xavier, Vautier, Franck, and Peiry, Jean-Luc
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EARTH sciences ,LIDAR ,ARCHAEOLOGY ,VISUALIZATION ,LIGHTING - Abstract
ALS-derived raster visualization techniques have become common in recent years, opening up new possibilities for subtle landform detection in earth sciences and archaeology, but they have also introduced confusion for users. As a consequence, the choice between these visualization techniques is still mostly supported by empirical knowledge. Some attempts have been made to compare these techniques, but there is still a lack of analytical data. This work proposes a new method, based on gradient modelling and spatial statistics, to analytically assess the efficacy of these visualization techniques. A selected panel of outstanding visualization techniques was assessed first by a classic non-analytical approach, and secondly by the proposed new analytical approach. The comparison of results showed that the latter provided more detailed and objective data, not always consistent with previous empirical knowledge. These data allowed us to characterize with precision the terrain for which each visualization technique performs best. A combination of visualization techniques based on DEM manipulation (Slope and Local Relief Model) appeared to be the best choice for normal terrain morphometry, occasionally supported by illumination techniques such as Sky-View Factor or Negative Openness as a function of terrain characteristics. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
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19. Interpretation of shallow electromagnetic instruments resistivity and magnetic susceptibility measurements using rapid 1D/3D inversion.
- Author
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Benech, Christophe, Dabas, Michel, Simon, François-Xavier, Tabbagh, Alain, and Thiesson, Julien
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MAGNETIC susceptibility measurement ,ELECTROMAGNETIC induction method ,ELECTRIC conductivity ,ELECTRICAL resistivity ,INVERSION (Geophysics) ,SOIL mechanics - Abstract
We have developed an inversion process of electromagnetic induction (EMI) data based on a two-step approach with 1D inversion of the entire studied surface and a fast 3D inversion applied over limited areas. This process is similar to that formerly used in resistivity prospection. For the study of soil (environmental, engineering, or archaeological explorations), low-frequency electromagnetic instruments (referred to as Slingram EMI) have highly useful specificities. They are light, are easy to move in the field, and can simultaneously measure the ground's electric conductivity and magnetic susceptibility; they have thus been used to map these properties over large surface areas, within relatively short periods of time, and at reasonable expense. The possibility of combining several coil geometries has opened up the potential for multidepth techniques and systematic 1D inversion, which are found to be sufficiently revealing to allow larger portions of surveyed areas to be analyzed. In the "targeted areas" selected for 3D inversion, the geometries of the 3D features and the resistivity and/or susceptibility contrasts are determined. This step is based on the method of moments, where only 3D heterogeneities are meshed, and only a small number of major characteristics, such as contrast, thickness, width, etc., are sought. We first applied this process to synthetic data, then to data acquired at an experimental test site, and finally to field cases. The rapid 3D inversion complements the 1D inversion by solving a series of issues: correction for the apparent anisotropy generated by the instrument configuration, multiarched anomalies, precise location of lateral changes, and determination of the properties contrasts. Our inversion results highlighted the importance of the instrument geometry. We also have determined that apparent magnetic susceptibility data can be more appropriate for the determination of the volume of man-made features and can be highly complementary to conductivity data. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
20. Refinement of ALS point cloud through the assessment of bare-earth classification algorithms: the AYPONA Project case study.
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Simon, François-Xavier, Pascual, Alfredo M., Vautier, Franck, and Miras, Yannick
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AERIAL photography ,GEOGRAPHIC information systems ,FREEWARE (Computer software) - Published
- 2015
21. WuMapPy - an open-source software for geophysical prospection data processing.
- Author
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Marty, Philippe, Darras, Lionel, Tabbagh, Jeanne, Benech, Christophe, Simon, François-Xavier, and Thiesson, Julien
- Subjects
GEOPHYSICAL prospecting ,IMAGE processing software ,INFORMATION storage & retrieval systems software - Published
- 2015
22. Geophysical mapping of a classical Greek road network: a case study from the city of Elis, Peloponnese.
- Author
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Papadopoulos, Nikos, Moffat, Ian, Donati, Jamie, Sarris, Apostolos, Kalayci, Tuna, Cantoro, Gianluca, Argyriou, Nasos, Armstrong, Kayt, and Simon, François-Xavier
- Subjects
GEOPHYSICAL surveys ,URBAN planning ,CITIES & towns - Published
- 2015
23. Measurement of the dielectric permittivity through multi-frequency EMI for archaeological prospection.
- Author
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Simon, François-Xavier, Tabbagh, Alain, and Sarris, Apostolos
- Subjects
ELECTRIC conductivity ,MAGNETIC susceptibility ,ELECTROMAGNETIC induction - Published
- 2015
24. Cultural variations of the Neolithic landscape of Thessaly.
- Author
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Sarris, Apostolos, Kalayci, Tuna, Simon, François-Xavier, Donati, Jamieson, García, Carmen C., Manataki, Meropi, Cantoro, Gianluca, Karampatsou, Georgia, Kalogiropoulou, Evita, Argyriou, Nassos, Dederix, Sylviane, Manzetti, Cristina, Nikas, Nikos, Vouzaxakis, Konstantinos, Rondiri, Vasso, Arachoviti, Polyxeni, Almatzi, Kaliopi, Efstathiou, Despina, and Stamelou, Evangelia
- Subjects
GEOPHYSICAL surveys ,MAGNETOMETRY in archaeology ,GROUND penetrating radar - Published
- 2015
25. Towards an integrated remote-sensing strategy for revealing the urban details of the Hellenistic-Roman city of Demetrias, central Greece.
- Author
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Sarris, Apostolos, Donati, Jamieson, Kalayci, Tuna, García, Carmen Cuenca, Simon, François-Xavier, Manataki, Meropi, and Triantafylopoulou, Pegky
- Subjects
GEOPHYSICAL surveys ,URBAN research ,EXTINCT cities - Published
- 2015
26. Self-assembling properties of a series of homologous ester-diamides – from ribbons to nanotubes.
- Author
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Simon, François-Xavier, Nguyen, Thi Thanh Tam, Díaz, Nancy, Schmutz, Marc, Demé, Bruno, Jestin, Jacques, Combet, Jérôme, and Mésini, Philippe J.
- Published
- 2013
- Full Text
- View/download PDF
27. Rapid 1D/3D inversion of shallow resistivity multipole data: Examples in archaeological prospection.
- Author
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Brinon, Claire, Simon, François-Xavier, and Tabbagh, Alain
- Subjects
ARCHAEOLOGY ,GEOPHYSICS ,EARTH sciences ,ELECTROMAGNETISM ,ELECTROMAGNETIC induction - Abstract
Fifteen years ago, the introduction of mobile multipole arrays led to substantial improvements in shallow electric prospection because it allowed information related to the vertical distribution of ground resistivity, in complement to the horizontal pattern of the detected features, to be extracted. However, to make full use of this wealth of information, further progress is needed to extend the qualitative interpretation of data to a more quantitative evaluation of the explored terrain. To that intent, we developed a two-step process: In the first step, a 1D electric model is fitted to the data over the full explored area, and in the second step, using the moment method, localized 3D interpretation is applied to limited areas, for which the characteristics of a given feature require closer scrutiny. After a first test with synthetic data generated using the surface integral 3D modeling method, this process was applied to three different archaeological sites and one test site, for both handheld pole-pole array systems and a multipole continuous electric profiling mechanically pulled system. At the test site, the characteristics of a known wall were accurately recovered. At the Duntzenheim site, the thickness and width of the archaeological remains determined by 3D interpretation corresponded to the features observed through excavation. At the other two sites, 3D interpretation made it possible to establish that the conductive features extend across the full extent of the superficial resistive second layers. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
28. Modification of self-assembled nanotubes by click chemistry generates new nanotubes by an out-of equilibrium process.
- Author
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Nguyen, Thi-Thanh-Tam, Simon, François-Xavier, Combet, Jérôme, Schmutz, Marc, and Mésini, Philippe J.
- Published
- 2011
- Full Text
- View/download PDF
29. Direct functionalization of self-assembled nanotubes overcomes unfavorable self-assembling processes.
- Author
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Nguyen, Thi-Thanh-Tam, Simon, François-Xavier, Schmutz, Marc, and Mésini, Philippe J.
- Subjects
- *
MOLECULAR self-assembly , *DIAMIDES , *CLICK chemistry , *CARBON nanotubes , *HYDROGEN bonding , *CHIRALITY - Abstract
Diamides containing alkyne and azido were self-assembled into nanotubes and were reacted under their self-assembled state with small molecules by "click chemistry"; the resulting compounds remain self-assembled into new nanotubes that cannot be formed by simple self-assembly of the constituting molecules. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
30. 3D voxel imaging of subsurface magnetic permeability / susceptibility with loop-loop frequency domain electromagnetic induction sensors.
- Author
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Guillemoteau, Julien, Simon, François-Xavier, Hulin, Guillaume, Dacko, Marion, Dousteyssier, Bertrand, and Tronicke, Jens
- Subjects
- *
ELECTROMAGNETIC induction , *MAGNETIC permeability , *THREE-dimensional imaging , *BIG data , *BASALT , *GEOPHYSICS , *OPTICAL coherence tomography , *MAGNETIC particle imaging - Abstract
The in-phase response collected by portable loop-loop electromagnetic induction (EMI)sensors operating at low and moderate induction numbers is typically used for sensing themagnetic permeability (or susceptibility) of the subsurface because it contains a rather small"induction" fraction depending on the electrical conductivity. The magnetization fraction ofthe in-phase signal, which is sensitive to the surrounding magnetic permeability, follows themagneto-static equations similarly to the magnetic method but with an active magneticsource. The use of an active source offers the possibility to collect data with several loop-loopconfigurations, which illuminate the subsurface with different sensitivity patterns (Klose etal., 2018). Such multi-configuration soundings thereby open the door to the imaging ofsubsurface magnetic permeability/susceptibility variations by an inversion procedure.Such an imaging procedure, which focuses on the induced magnetization effect,overcomes the classical depth ambiguity generally encountered with passive geomagneticdata.To invert multi-configuration in-phase data sets, we apply the 3D full-grid multi-channeldeconvolution (MCD) procedure presented in Guillemoteau et al. (2017). This fast imagingalgorithm allows us to invert large in-phase data sets (e.g., consisting of more thana hundred thousand data points) for a dense voxel-based 3D model of magneticpermeability subject to smoothness constraints. In this study, we first present anddiscuss synthetic examples of our inversion strategy, which aim at simulating realisticconditions. Finally, we demonstrate the applicability of our method to field data collectedacross an archaeological site in Auvergne (France) to image the foundations of agallo-roman villa consisting of basaltic rock material. Our synthetic and field dataexamples demonstrate the potential of the proposed inversion procedure offeringnew and complementary ways to interpret data sets collected with modern EMIinstruments.References:Guillemoteau, J., Christensen, N. B., Jacobsen, B. H., Tronicke, J. (2017): Fast 3Dmulti-channel deconvolution of electromagnetic induction loop-loop apparent conductivitydata sets acquired at low induction numbers. Geophysics, 82(6), E357-E369.Klose, T., Guillemoteau, J., Simon, F.-X., Tronicke, J. (2018): Toward subsurface magneticpermeability imaging with electromagnetic induction sensors: Sensitivity computation andreconstruction of measured data. Geophysics, 83, E335-E345 [ABSTRACT FROM AUTHOR]
- Published
- 2019
31. Formation of helical mesopores in organic polymer matrices.
- Author
-
Simon FX, Khelfallah NS, Schmutz M, Díaz N, and Mésini PJ
- Published
- 2007
- Full Text
- View/download PDF
32. Self-assembled diamide nanotubes in organic solvents.
- Author
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Díaz N, Simon FX, Schmutz M, Rawiso M, Decher G, Jestin J, and Mésini PJ
- Published
- 2005
- Full Text
- View/download PDF
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