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Evaluating the suitability of multi-scale terrain attribute calculation approaches for seabed mapping applications / Benjamin Misiuk in Marine geodesy, vol 44 n° 4 (July 2021)  

Public [article]  inMarine geodesy > vol 44 n° 4 (July 2021) . - pp 327 - 385 Titre : Evaluating the suitability of multi-scale terrain attribute calculation approaches for seabed mapping applications Type de document : Article/Communication Auteurs : Benjamin Misiuk, Auteur ; Vincent Lecours, Auteur ; M.F.J. Dolan, Auteur ; et al., Auteur Année de publication : 2021 Article en page(s) : pp 327 - 385 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie thématique [Termes IGN] analyse multiéchelle [Termes IGN] artefact [Termes IGN] attribut géomètrique [Termes IGN] carte bathymétrique [Termes IGN] cartographie hydrographique [Termes IGN] fond marin [Termes IGN] géomorphométrie [Termes IGN] habitat animal [Termes IGN] pente [Termes IGN] réalité de terrain [Termes IGN] rugosité [Termes IGN] sondeur multifaisceaux [Termes IGN] Terre-Neuve, île de (Terre-Neuve-et-Labrador) Résumé : (auteur) The scale dependence of benthic terrain attributes is well-accepted, and multi-scale methods are increasingly applied for benthic habitat mapping. There are, however, multiple ways to calculate terrain attributes at multiple scales, and the suitability of these approaches depends on the purpose of the analysis and data characteristics. There are currently few guidelines establishing the appropriateness of multi-scale raster calculation approaches for specific benthic habitat mapping applications. First, we identify three common purposes for calculating terrain attributes at multiple scales for benthic habitat mapping: (i) characterizing scale-specific terrain features, (ii) reducing data artefacts and errors, and (iii) reducing the mischaracterization of ground-truth data due to inaccurate sample positioning. We then define criteria that calculation approaches should fulfill to address these purposes. At two study sites, five raster terrain attributes, including measures of orientation, relative position, terrain variability, slope, and rugosity were calculated at multiple scales using four approaches to compare the suitability of the approaches for these three purposes. Results suggested that specific calculation approaches were better suited to certain tasks. A transferable parameter, termed the ‘analysis distance’, was necessary to compare attributes calculated using different approaches, and we emphasize the utility of such a parameter for facilitating the generalized comparison of terrain attributes across methods, sites, and scales. Numéro de notice : A2021-526 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/01490419.2021.1925789 Date de publication en ligne : 04/06/2021 En ligne : https://doi.org/10.1080/01490419.2021.1925789 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97967 [article]

Analysing 18th century hydrographic data: a campaign in the Bay of Biscay, 1750-1751 / Helen Mair Rawsthorne (2021)  

Public Titre : Analysing 18th century hydrographic data: a campaign in the Bay of Biscay, 1750-1751 Type de document : Article/Communication Auteurs : Helen Mair Rawsthorne , Auteur Editeur : Saint-Mandé : Institut national de l'information géographique et forestière - IGN (2012-) Année de publication : 2021 Conférence : Data for History 2021, 4th Data for History conference : Modelling Time, Places, Agents 19/05/2021 30/06/2021 Berlin virtuel Allemagne OA Abstracts only Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] campagne d'observations [Termes IGN] carte ancienne [Termes IGN] carte marine [Termes IGN] données hydrographiques [Termes IGN] sondage par points [Termes IGN] Terre-Neuve, île de (Terre-Neuve-et-Labrador) [Termes IGN] traitement de données Résumé : (auteur) This paper features part of the work carried out for my Master’s thesis in Epistemology, History of Science and Technology. The project was completed during a six-month internship with the Région Nouvelle-Aquitaine as part of the Nouvelle-Aquitaine et Outre-Mers programme. In 2020, the French Service Hydrographique et Océanographique de la Marine (Shom) celebrated its 300th anniversary. The Shom is the French public authority for maritime and coastal geographical reference information. Such information is obtained through specific measurement techniques that have evolved throughout history. The Shom's predecessor, the Dépôt des Cartes et Plans de la Marine, was created in 1720 in order to collect, analyse and compile the documents produced by the maritime community to construct nautical maps. It was in the interest of the royal power of the time to collect mariners’ logbooks to monopolise the information contained inside them. They did this via the Grande Ordonnance de la Marine, established in 1681 and written by Colbert, secretary of the navy under the reign of Louis XIV, which required pilots of vessels to submit all logbooks to the Greffe de l’Amirauté. Then, in 1773 the Dépôt became the sole institution in charge of the production and publication of nautical charts in France. As well as simply collecting logbooks, the Dépôt began producing and enforcing rules and standards on how to log the information inside them. This information would then be regrouped by location and type, and used for the production or correction of nautical charts by Dépôt engineers. Upon discovering inaccuracies on nautical charts during voyages, mariners would often annotate the charts, which would later be subject to discussion and revision by the Dépôt upon their return. When significant errors or deficiencies were identified on published nautical charts, the Dépôt, along with the logistical assistance of the Ministre de la Marine, organised for hydrographic campaigns to be carried out to verify and improve existing nautical charts. In 1750 and 1751, a hydrographic campaign was conducted in the Bay of Biscay by a captain of the French Navy, chosen thanks to his practical navigation experience. The aim was to correct two charts of the region and to carry out landing soundings that could be added to new charts. During the mission, over 350 soundings were carried out in the Bay using a leadline to measure the depth of the water and to record samples of the seabed at different points. For every sounding point, some or all of the following information were recorded in manuscripts written on board the ship: the date, the time, the depth of the water, the nature of the seabed and the geographic position, either with bearings, with geographic coordinates or by dead reckoning. This study presents a methodology for the processing and analysis of the hydrographic data recorded during this campaign. The processing workflow involves numerous steps: the datafication of the information contained in the ship’s documents; the definition of the digitised data via the analysis of the accompanying historical archives of the campaign and the addition of metadata; the standardisation of the digitised data to comply with curent norms; the classification of the digitised data according to modern reference data. The newly interoperable historical data can then be compared and analysed alongside equivalent data collected at different moments in history that have undergone the same data processing. In this project, the historical data from the campaign, once processed, are compared to current data, collected and diffused by the Shom, allowing an analysis of the evolution and the continuities in the bathymetry and sedimentology in the Bay of Biscay. The methodology developed makes use of digital humanities tools, particularly digital cartography tools for visualising the mapping of the processed historical data. Numéro de notice : C2021-005 Affiliation des auteurs : UGE-LASTIG (2020- ) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComSansActesPubliés-Unpublished DOI : sans En ligne : https://hal.science/hal-03239920v1 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97795

Integrating socio-economic data for integrated land management (ILM): Examples from the Humber river basin, western Newfoundland / B. Eddy in Geomatica, vol 65 n° 3 (September 2011)  

Public [article]  inGeomatica > vol 65 n° 3 (September 2011) . - pp 283 - 291 Titre : Integrating socio-economic data for integrated land management (ILM): Examples from the Humber river basin, western Newfoundland Type de document : Article/Communication Auteurs : B. Eddy, Auteur ; A. Dort, Auteur Année de publication : 2011 Article en page(s) : pp 283 - 291 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG [Termes IGN] bassin hydrographique [Termes IGN] données socio-économiques [Termes IGN] gestion intégrée du paysage [Termes IGN] interaction humain-espace [Termes IGN] modélisation spatiale [Termes IGN] système d'information géographique [Termes IGN] Terre-Neuve, île de (Terre-Neuve-et-Labrador) [Termes IGN] territoire Résumé : (Auteur) The application of geomatics for Integrated Land Management (ILM) often focuses on analysis and modelling of bio-physical dimensions of a study area. However, data about human dimensions, such as socio-economic conditions of communities within a region, are equally important to consider as key drivers behind various ILM scenarios. Incorporating socio-economic conditions of communities in a spatially-explicit manner presents a number of challenges due to differences in spatial frameworks associated with human and biophysical data. This paper presents an approach for integrating socio-economic data for ILM analysis that allows better geospatial alignment and integration of human and biophysical dimensions, and further allows for a more local, contextual analysis of the relationships and dependencies particular communities have with the surrounding landscape and its resources. It does this using a concept of communities as ‘human habitats’ whereby each community in a region can be analyzed in terms of how it is co-evolving and adapting with other communities in the region and with natural changes in the bio-physical landscape. Numéro de notice : A2011-548 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.5623/cig2011-044 En ligne : https://doi.org/10.5623/cig2011-044 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31442 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
035-2011031	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Géographie universelle, 1. Tome 13 Amérique septentrionale, première partie généralités, Canada / Paul Vidal De La Blache (1935)

Public Titre de série : Géographie universelle, 1 Titre : Tome 13 Amérique septentrionale, première partie généralités, Canada Type de document : Ouvrage divers Auteurs : Paul Vidal De La Blache, Auteur ; L. Gallois, Auteur ; H. Baulig, Auteur Editeur : Paris : Armand Colin Année de publication : 1935 Collection : Géographie universelle num. 13-1 Importance : 639 p. Format : 20 x 28 cm Note générale : Bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Géographie générale [Termes IGN] agriculture (secteur primaire) [Termes IGN] Arctique, océan [Termes IGN] Canada [Termes IGN] climat froid [Termes IGN] colonisation [Termes IGN] continent [Termes IGN] faune [Termes IGN] flore locale [Termes IGN] géographie économique [Termes IGN] géographie humaine [Termes IGN] géographie physique [Termes IGN] Hudson, baie d' [Termes IGN] lac [Termes IGN] mer [Termes IGN] navigation [Termes IGN] pêche [Termes IGN] port [Termes IGN] Saint-Laurent (fleuve) [Termes IGN] secteur secondaire [Termes IGN] Terre-Neuve, île de (Terre-Neuve-et-Labrador) [Termes IGN] ville Numéro de notice : 24771A Affiliation des auteurs : non IGN Nature : Encyclopédie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=38612

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
24771-01A	45.01	Livre	Centre de documentation	Géographie - Géosciences	Fonds ancien - consultable sur RdV Exclu du prêt