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Triangulation network of 1929–1944 of the first 1:500 urban map of València / Miriam Villar-Cano in Survey review, vol 52 n° 373 (July 2020)  

Public [article]  inSurvey review > vol 52 n° 373 (July 2020) . - pp 317 - 329 Titre : Triangulation network of 1929–1944 of the first 1:500 urban map of València Type de document : Article/Communication Auteurs : Miriam Villar-Cano, Auteur ; Ángel Marqués‐Mateu, Auteur ; María Jesús Jiménez-Martínez, Auteur Année de publication : 2020 Article en page(s) : pp 317 - 329 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Triangulation [Termes descripteurs IGN] 1:500 [Termes descripteurs IGN] arpentage [Termes descripteurs IGN] carte ancienne [Termes descripteurs IGN] cartographie urbaine [Termes descripteurs IGN] données de terrain [Termes descripteurs IGN] European Terrestrial Reference System 1989 [Termes descripteurs IGN] réseau de triangulation [Termes descripteurs IGN] transformation de coordonnées [Termes descripteurs IGN] Valence (Espagne) Résumé : (auteur) Triangulation is a surveying method on which earlier maps made were based. Although the origins of the method can be traced back to the 16th century, it is still used today, with minor changes, to adjust networks observed with modern geodetic techniques. In this paper we present the geodetic survey work that was carried out for the primary triangulation network of the first 1:500 urban map of the city of València (Spain). It spanned from 1929 to 1944 and resulted in 421 maps covering about 174 square kilometres. We focus on four key elements to define the geometric framework of a map: (1) the geodetic network, (2) the cartographic projection, (3) the baseline measurements, and (4) the primary triangulation. The paper is based on the interpretation of original documents and field books recovered from the archives of the València City Council. In order to check the accuracy and consistency of the survey work, we recomputed all calculations directly from the field data, following the mathematical procedures of the time. We obtained a set of transformation parameters to convert the coordinates of 1929 to current coordinates based on the European Terrestrial Reference System of 1989 (ETRS89). Results showed that the 1929 primary triangulation angles and coordinates are accurate to 8 s of arc and 35 cm respectively, and that the coordinates transform well into the current reference system with average residuals of 26 cm across nine control points, demonstrating the high quality of the 1929 work. Numéro de notice : A2020-395 Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00396265.2018.1564599 date de publication en ligne : 03/01/2019 En ligne : https://doi.org/10.1080/00396265.2018.1564599 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95421 [article]

Agricultural land values using Geographic Information Systems : design location model and tools for information available by geoportal. Application to a Spanish agricultural area / Inmaculada Marques-Perez in Survey review, vol 50 n° 363 (September 2018)  

Public [article]  inSurvey review > vol 50 n° 363 (September 2018) . - pp 545 - 554 Titre : Agricultural land values using Geographic Information Systems : design location model and tools for information available by geoportal. Application to a Spanish agricultural area Type de document : Article/Communication Auteurs : Inmaculada Marques-Perez, Auteur ; Gaspar Mora-Navarro, Auteur ; Jose-Luis Perez-Salas, Auteur ; Joan Velilla-Torres, Auteur ; Carmen Femenia-Ribera, Auteur Année de publication : 2018 Article en page(s) : pp 545 - 554 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes descripteurs IGN] parcelle cadastrale [Termes descripteurs IGN] système d'information géographique [Termes descripteurs IGN] Valence (Espagne) [Termes descripteurs IGN] valeur économique Résumé : (Auteur) Quantifying the effect of location on land values can be done by designing a location factor which considers the most relevant aspects that may influence this value such as proximity to large cities, the population living around the parcel or land to be valued, the distance from it to markets or logistic centres, or the existence of places of environmental or landscape interest. Considering these variables can be complicated by having to process large amounts of distinct data (distances, no. of inhabitants or population size, protected areas, etc.), which have to be processed and interpreted to be able to define the factor that summarises them, and can affect the land value from income, such as productive assets, to correct its value. The main proposal put forward in this research is to study the various location aspects that affect land values, and the possibilities that Geographic Information Systems (GIS) offer to design with free software tools that allow simple calculations of a location correction factor and, consequently, land values. Calculations were made for all the rural cadastral parcels (2.3 million) in the Valencian Region. Results can be integrated into a new online GIS portal and make these available to users in soil valuation studies. Numéro de notice : A2018-452 Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00396265.2017.1350342 date de publication en ligne : 28/07/2017 En ligne : https://doi.org/10.1080/00396265.2017.1350342 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91038 [article]

Creating a conceptual framework to improve the re‐usability of open geographic data in cities / Fernando Benitez‐Paez in Transactions in GIS, vol 22 n° 3 (June 2018)  

Public [article]  inTransactions in GIS > vol 22 n° 3 (June 2018) . - pp 806 - 822 Titre : Creating a conceptual framework to improve the re‐usability of open geographic data in cities Type de document : Article/Communication Auteurs : Fernando Benitez‐Paez, Auteur ; Alexis Comber, Auteur ; Sergio Trilles, Auteur ; Joaquin Huerta, Auteur Année de publication : 2018 Article en page(s) : pp 806 - 822 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données [Termes descripteurs IGN] cadre conceptuel [Termes descripteurs IGN] collectivité territoriale [Termes descripteurs IGN] Colombie [Termes descripteurs IGN] données localisées numériques [Termes descripteurs IGN] données ouvertes [Termes descripteurs IGN] Espagne [Termes descripteurs IGN] indicateur [Termes descripteurs IGN] réutilisation des données [Termes descripteurs IGN] Valence (Espagne) Résumé : (Auteur) Open data has a profound effect on the working environment within which information is created and shared at all levels. At the local government level, open data initiatives have resulted in higher transparency in policy, a greater engagement between decision‐makers and citizens, and have changed the culture about how data analysis and evidence are used to support local governance. This article, based on data collected through an on‐line survey, participatory workshops with data user communities in four cities (in Colombia and Spain), and interviews with Valencia good‐government office, identifies four elements for a conceptual framework to improve the re‐usability of open geographic data in cities. The essential elements defined in this research are the definition of data user communities and their needs, the creation of the community of reuse, user‐focused metadata, and reuse‐focused legal terms. The definition of these indicators provides a framework for authorities to re‐shape their current open data strategy to include data user requirements. At the end of this article, a roadmap for future research and implementation is presented, considering some reflections on the conceptual framework. Numéro de notice : A2018-579 Thématique : GEOMATIQUE Nature : Actes nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12449 date de publication en ligne : 17/08/2018 En ligne : https://doi.org/10.1111/tgis.12449 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92326 [article]

Precipitable water vapour content from ESR/SKYNET sun–sky radiometers : validation against GNSS/GPS and AERONET over three different sites in Europe / Monica Campanelli in Atmospheric measurement techniques, vol 11 n° 1 (January 2018)    

Public [article]  inAtmospheric measurement techniques > vol 11 n° 1 (January 2018) . - pp 81 - 94 Titre : Precipitable water vapour content from ESR/SKYNET sun–sky radiometers : validation against GNSS/GPS and AERONET over three different sites in Europe Type de document : Article/Communication Auteurs : Monica Campanelli, Auteur ; Alessandra Mascitelli, Auteur ; Paolo Sano, Auteur ; Henri Diémoz, Auteur ; Victor Estellés, Auteur ; Stefano Federico, Auteur ; Anna Maria Iannarelli, Auteur ; Francesca Fratarcangeli, Auteur ; Augusto Mazzoni, Auteur ; Eugenio Realini, Auteur ; Mattia Crespi, Auteur ; Olivier Bock , Auteur ; Jose A. Martínez-Lozano, Auteur ; Stefano Dietrich, Auteur Année de publication : 2018 Projets : 1-Pas de projet / Article en page(s) : pp 81 - 94 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale [Termes descripteurs IGN] Aoste (val d') [Termes descripteurs IGN] constante [Termes descripteurs IGN] coordonnées GPS [Termes descripteurs IGN] données météorologiques [Termes descripteurs IGN] données spatiotemporelles [Termes descripteurs IGN] ESR/Skynet [Termes descripteurs IGN] étalonnage d'instrument [Termes descripteurs IGN] photomètre [Termes descripteurs IGN] précipitation [Termes descripteurs IGN] retard troposphérique zénithal [Termes descripteurs IGN] Rome [Termes descripteurs IGN] teneur en vapeur d'eau [Termes descripteurs IGN] Valence (Espagne) [Termes descripteurs IGN] water vapour radiometer Résumé : (Auteur) The estimation of the precipitable water vapour content (W) with high temporal and spatial resolution is of great interest to both meteorological and climatological studies. Several methodologies based on remote sensing techniques have been recently developed in order to obtain accurate and frequent measurements of this atmospheric parameter. Among them, the relative low cost and easy deployment of sun–sky radiometers, or sun photometers, operating in several international networks, allowed the development of automatic estimations of W from these instruments with high temporal resolution. However, the great problem of this methodology is the estimation of the sun-photometric calibration parameters. The objective of this paper is to validate a new methodology based on the hypothesis that the calibration parameters characterizing the atmospheric transmittance at 940 nm are dependent on vertical profiles of temperature, air pressure and moisture typical of each measurement site. To obtain the calibration parameters some simultaneously seasonal measurements of W, from independent sources, taken over a large range of solar zenith angle and covering a wide range of W, are needed. In this work yearly GNSS/GPS datasets were used for obtaining a table of photometric calibration constants and the methodology was applied and validated in three European ESR-SKYNET network sites, characterized by different atmospheric and climatic conditions: Rome, Valencia and Aosta. Results were validated against the GNSS/GPS and AErosol RObotic NET-work (AERONET) W estimations. In both the validations the agreement was very high, with a percentage RMSD of about 6, 13 and 8 % in the case of GPS intercomparison at Rome, Aosta and Valencia, respectively, and of 8 % in the case of AERONET comparison in Valencia. Analysing the results by W classes, the present methodology was found to clearly improve W estimation at low W content when compared against AERONET in terms of % bias, bringing the agreement with the GPS (considered the reference one) from a % bias of 5.76 to 0.52. Numéro de notice : A2018-053 Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.5194/amt-11-81-2018 date de publication en ligne : 09/01/2018 En ligne : http://dx.doi.org/10.5194/amt-11-81-2018 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89371 [article]

Documents numériques

en open access Precipitable water vapour content from ESR/SKYNET sun–sky radiometers - pdf éditeur Adobe Acrobat PDF

Deformation monitoring of the submillimetric UPV calibration baseline / Luis García-Asenjo in Journal of applied geodesy, vol 11 n° 2 (June 2017)  

Public [article]  inJournal of applied geodesy > vol 11 n° 2 (June 2017) . - pp 107 - 114 Titre : Deformation monitoring of the submillimetric UPV calibration baseline Type de document : Article/Communication Auteurs : Luis García-Asenjo, Auteur ; Sergio Baselga, Auteur ; Pascual Garrigues, Auteur Année de publication : 2017 Article en page(s) : pp 107 - 114 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux [Termes descripteurs IGN] base géodésique [Termes descripteurs IGN] déformation géométrique [Termes descripteurs IGN] distancemètre [Termes descripteurs IGN] étalonnage d'instrument [Termes descripteurs IGN] mécomètre [Termes descripteurs IGN] stabilité [Termes descripteurs IGN] Valence (Espagne) Résumé : (Auteur) A 330 m calibration baseline was established at the Universitat Politècnica de València (UPV) in 2007. Absolute scale was subsequently transferred in 2012 from the Nummela Standard Baseline in Finland and distances between pillars were determined with uncertainties ranging from 0.1 mm to 0.3 mm. In order to assess the long-term stability of the baseline, three field campaigns were carried out from 2013 to 2015 in a co-operative effort with the Universidad Complutense de Madrid (UCM), which provided the only Mekometer ME5000 distance meter available in Spain. Since the application of the ISO17123-4 full procedure did not suffice to come to a definite conclusion about possible displacements of the pillars, we opted for the traditional geodetic network approach. This approach had to be adapted to the case at hand in order to deal with problems such as the geometric weakness inherent to calibration baselines and scale uncertainty derived from both the use of different instruments and the high correlation between the meteorological correction and scale determination. Additionally, the so-called the maximum number of stable points method was also tested. In this contribution, it is described the process followed to assess the stability of the UPV submillimetric calibration baseline during the period of time from 2012 to 2015. Numéro de notice : A2017-284 Thématique : POSITIONNEMENT Nature : Article En ligne : https://doi.org/10.1515/jag-2016-0018 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85317 [article]

Elche : Une dame, des carrières et des cartes / Laurent Costa in Géomatique expert, n° 76 (01/09/2010)

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Three-dimensional city model visualisation for real-time guided museum tours / J.L. Lerma in Photogrammetric record, vol 19 n° 108 (December 2004 - February 2005)  

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The EuroSTARRS airborne campaign in support of the SMOS mission: first results over land surfaces / K. Saleh in International Journal of Remote Sensing IJRS, vol 25 n° 1 (January 2004)

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A multi-temporal study of chlorophyll-a concentration in the Albufera lagoon of Valencia, Spain, using Thematic Mapper data / M.J. Lopez Garcia in International Journal of Remote Sensing IJRS, vol 11 n° 2 (February 1990)

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Determination of the effective emissivity and temperature under vertical observation of a citrus orchard : Application to frost nowcasting / V. Caselles in International Journal of Remote Sensing IJRS, vol 9 n° 4 (April 1988)

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tome 27 - 4 /1976 - Télédétection (Bulletin de Méditerranée : revue géographique des pays méditerranéens) / Institut de géographie Université d'Aix-Marseille  

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Nouvelle géographie universelle / E. Reclus (1883)

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