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Laser scanning-based detection of morphological changes of a historical building occurred during a seismic sequence: Method and case study / Arianna Pesci in International Journal of Geomatics and Geosciences, vol 5 n° 3 (February 2015) 

Public [article]  inInternational Journal of Geomatics and Geosciences > vol 5 n° 3 (February 2015) Titre : Laser scanning-based detection of morphological changes of a historical building occurred during a seismic sequence: Method and case study Type de document : Article/Communication Auteurs : Arianna Pesci, Auteur ; Giordano Teza, Auteur ; Enzo Boschi, Auteur Année de publication : 2015 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes IGN] dommage matériel [Termes IGN] Emilie-Romagne (Italie) [Termes IGN] lasergrammétrie [Termes IGN] patrimoine culturel [Termes IGN] patrimoine immobilier [Termes IGN] séisme [Termes IGN] surveillance d'ouvrage [Termes IGN] tour (bâtiment) Résumé : (auteur) A tall masonry building in an area hit by an earthquake could suffer of some damages whose detection and evaluation are necessary for both emergency management and planning of restoration works. A complete characterization of the health state of a potentially damaged structure requires an integration of data provided by several techniques, which could be impossible in earthquake emergency conditions. The duration of a seismic sequence can reach several months and the state of a tall building could change after each significant shock. Terrestrial laser scanning (TLS) allows a fast and contactless acquisition as well as an accurate geometric modeling of a building and therefore can be used to evaluate the seismic-induced changes, possibly related to damages. The results of a study based on TLS monitoring the 100-m high Asinelli tower (Bologna, Italy), which is a very important element of the Italian medieval cultural heritage, during the 2012 Emilia Romagna seismic sequence are provided and discussed here. This work focuses on both method and case study. It is aimed to show how much information, reliable and accurate, can be extracted in a quick and simple way under alert conditions. Moreover, the structural behavior of the tower is provided. Considerations about natural oscillations of a tower subjected to seismic activity are also provided. Numéro de notice : A2015-018 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75480 [article]

Documents numériques

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A laser scanning-based method for fast estimation of seismic-induced building deformations / Arianna Pesci in ISPRS Journal of photogrammetry and remote sensing, vol 79 (May 2013)  

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 79 (May 2013) . - pp 185 - 198 Titre : A laser scanning-based method for fast estimation of seismic-induced building deformations Type de document : Article/Communication Auteurs : Arianna Pesci, Auteur ; Giordano Teza, Auteur ; Elena Bonali, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 185 - 198 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes IGN] analyse comparative [Termes IGN] cartographie d'urgence [Termes IGN] déformation d'édifice [Termes IGN] données lidar [Termes IGN] données localisées 3D [Termes IGN] erreur systématique [Termes IGN] Italie [Termes IGN] séisme [Termes IGN] semis de points [Termes IGN] télémétrie laser terrestre Résumé : (Auteur) Monitoring damaged buildings in an area where an earthquake has occurred requires the use of techniques which provide rapid and safe measurements even in emergency conditions. In particular, remote sensing techniques like terrestrial laser scanning (TLS) can satisfy these requirements, since they produce very dense point clouds in little time and also allow an accurate geometric modeling of observed buildings. Nevertheless, strong constraints on TLS data acquisition geometry, such as acquisition distance and incidence angles, typically characterize an area in seismic emergency conditions. In order to correctly interpret the data, it is necessary to estimate errors affecting TLS measurements in these critical conditions. A reliable estimation can be achieved by means of experiments and numerical simulations aimed at quantifying a realistic noise level, with emphasis on reduction of artifacts due to data acquisition, registration and modeling. This paper proposes a data analysis strategy in which TLS-based morphological maps computed as point-to-primitive differences are created. The method can be easily used for accurate surveying in emergency conditions. In order to demonstrate the proposed method in very diverse situations, it was applied to rapidly detect deformation traces in the San Giacomo Roncole Campanile (Modena), the Asinelli tower (Bologna) and the Cantalovo Church (Verona), three buildings damaged by the Mw 5.9 Emilia Romagna 2012 earthquake (Italy). Numéro de notice : A2013-236 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2013.02.021 En ligne : https://doi.org/10.1016/j.isprsjprs.2013.02.021 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32374 [article]

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Multitemporal laser scanner-based observation of the Mt. Vesuvius crater: Characterization of overall geometry and recognition of landslide events / Arianna Pesci in ISPRS Journal of photogrammetry and remote sensing, vol 66 n° 3 (May - June 2011)  

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 66 n° 3 (May - June 2011) . - pp 327 - 336 Titre : Multitemporal laser scanner-based observation of the Mt. Vesuvius crater: Characterization of overall geometry and recognition of landslide events Type de document : Article/Communication Auteurs : Arianna Pesci, Auteur ; Giordano Teza, Auteur ; P. De Martino, Auteur ; et al., Auteur Année de publication : 2011 Article en page(s) : pp 327 - 336 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes IGN] analyse diachronique [Termes IGN] caldeira [Termes IGN] détection de changement [Termes IGN] données lidar [Termes IGN] effondrement de terrain [Termes IGN] éruption volcanique [Termes IGN] Italie [Termes IGN] photogrammétrie terrestre [Termes IGN] surveillance géologique [Termes IGN] télémétrie laser terrestre [Termes IGN] Vésuve (volcan) [Termes IGN] volcan Résumé : (Auteur) Results of observations of the Mt. Vesuvius caldera, carried out by means of terrestrial laser scanning (TLS) in May 2005, October 2006 and June 2009, are reported here. In each survey the whole crater was acquired with 17/20 scans from 6 different viewpoints and the corresponding digital surface models were generated and registered into the UTM-WGS84 reference frame. In this way, a comparison between the multitemporal models leads to an evaluation of the occurred changes. The deformation maps, i.e. the contouring plots of the differences between the models along the direction of maximum variations, showed a progressive mass loss due to rock-falls from the NE vertical crater wall whose area was about 5000m2. The TLS data also showed the accumulation at the bottom. The volume loss which occurred from 2005 to 2009, was computed by subtraction of volumes defined with respect to reference planes parallel to the caldera walls and was estimated to be 20300m3. The volume uncertainties due to registration errors, subsampling noise effects, and effects due to choice of the reference plane, were also estimated. Some results were also interpreted on the basis of micro-seismic and meteorological data in order to plan a monitoring technique where seismic signals related to rock-fall and/or signals of intense rainfalls are used as alarms for fast TLS surveys able to characterize the corresponding changes of the caldera walls. The proposed methodology, in particular the simple but effective approach used in the estimation of volume uncertainties, can be applied to each rock slope instability phenomenon, regardless of the particular environment. Numéro de notice : A2011-115 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2010.12.002 En ligne : https://doi.org/10.1016/j.isprsjprs.2010.12.002 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30895 [article]

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The first terrestrial laser scanner application over Vesuvius: High resolution model of a volcano crater / Arianna Pesci in International Journal of Remote Sensing IJRS, vol 28 n° 1-2 (January 2007)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 28 n° 1-2 (January 2007) . - pp 203 - 219 Titre : The first terrestrial laser scanner application over Vesuvius: High resolution model of a volcano crater Type de document : Article/Communication Auteurs : Arianna Pesci, Auteur ; F. Loddo, Auteur ; D. Conforti, Auteur Année de publication : 2007 Article en page(s) : pp 203 - 219 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] cratère [Termes IGN] modèle numérique de surface [Termes IGN] Naples [Termes IGN] réflectance [Termes IGN] réflectance spectrale [Termes IGN] surveillance géologique [Termes IGN] télémétrie laser terrestre [Termes IGN] Vésuve (volcan) [Termes IGN] volcan Résumé : (Auteur) This paper deals with terrestrial long-range laser scanner applications, gives an overview of topics related to this methodology, provides real and tested information about laser scanners, and analyses the reflectance of different materials. After positive results obtained during an experimental test executed in Bologna (Italy) on March 2005, the INGV (Bologna, Italy) and CODEVINTEC srl (Milan, Italy) planned a mission over the Mount Vesuvius volcano (Naples, Italy). For the first time, a wide crater area composed of low reflectivity materials was completely surveyed, creating a very accurate digital surface model. In this work, a long-range laser scanner was used to create high-precision surveys that demonstrated very low residual values in scan comparisons. The results lead to the conclusion that this methodology is suitable for surface monitoring proposals. Copyright Taylor & Francis Numéro de notice : A2007-035 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160500534473 En ligne : https://doi.org/10.1080/01431160500534473 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28401 [article]

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