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See detailNaît-on géographe ou le devient-on ?
Halleux, Jean-Marie ULg

in Bulletin de la Société Géographique de Liège (2009), 52

Ce court article expose une réflexion introspective sur les raisons qui poussent à devenir géographe et à s’orienter vers tel ou tel domaine de la discipline. Pour l’auteur, ces raisons semblent combiner ... [more ▼]

Ce court article expose une réflexion introspective sur les raisons qui poussent à devenir géographe et à s’orienter vers tel ou tel domaine de la discipline. Pour l’auteur, ces raisons semblent combiner une attirance pour la compréhension du Monde qui nous entoure et certaines expériences de vie. L’analyse personnelle présentée conduit également à souligner les exigences du métier de géographe et à relever combien sa pratique est dépendante de son insertion dans l’univers social. [less ▲]

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See detailPROPOS DISPARATES AUTOUR DE LA GÉOGRAPHIE PHYSIQUE
Ek, Camille ULg

in Bulletin de la Société géographique de Liège (2009), 52

Rambling thoughts about physical geography Theories and paradigms succeed each other as time passes by. Some of the paradigms display a strong tendency to degenerate into laws and rules. Applied research ... [more ▼]

Rambling thoughts about physical geography Theories and paradigms succeed each other as time passes by. Some of the paradigms display a strong tendency to degenerate into laws and rules. Applied research requires team work and hierarchy. It should not be the only kind of research. Financial support is essential to support fundamental research, some of which must remain independent. Systemic approach to research, even in physical geography, thrusts the Human to the forefront. Man becomes an agent, as well as a subject to the process. Research should be structured and open to provide us with the most essential elements necessary, to correctly validate the theories and to be useful to mankind. [less ▲]

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See detailLa géographie, ça sert, d'abord, à faire le Monde
Breuer, Christophe ULg

in Bulletin de la Société Géographique de Liège (2009), 52

The geography is directly confronted with the societies’ problems, which it tries to answer by using its particular point of view. Specificities of the discipline generate innovation and at same time pose ... [more ▼]

The geography is directly confronted with the societies’ problems, which it tries to answer by using its particular point of view. Specificities of the discipline generate innovation and at same time pose a permanent epistemological questioning, which makes the orientation of the young geographers particularly complex. [less ▲]

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See detailÉvolution (1979-2008) des services d'hospitalisation en Belgique. Quels liens avec la hiérarchie urbaine ?
Trotta, Marie ULg

in Bulletin de la Société Géographique de Liège (2009), 53

This research compares the spatial pattern of services provided in hospitals just before the introduction of the moratorium stopping the growth of the hospital sector (1979) with the current situation ... [more ▼]

This research compares the spatial pattern of services provided in hospitals just before the introduction of the moratorium stopping the growth of the hospital sector (1979) with the current situation (2008) by their relationship to urban hierarchy. The method used to analyze this relationship is the application of the statistic coefficient ϒ. This work shows that this relationship is significant for the two studied periods. However, the presence of a nearby faculty of medicine appears to interfere significantly on this relationship. The study also highlights a slight tendency to the strengthening of the aforementioned relationship. Besides, it demonstrates the existence of different spatial behaviours depending on the type of service. [less ▲]

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See detailEstimation de la transparence de l'atmosphère par ciel clair à la Station Scientifique des Hautes-fagnes (SSHF), Mont Rigi, Belgique. Comparaison avec la Station d'Uccle-Bruxelles (IRM)
Dury, Marie ULg; Ginion, Serge; Erpicum, Michel ULg

in Bulletin de la Société Géographique de Liège (2009), 51(2008), 5-16

This paper deals with the study of the transparency of the atmosphere on clear sky at the Mont Rigi (Belgian Hautes-Fagnes) with the aim of underlining the particularities of the air composition in the ... [more ▼]

This paper deals with the study of the transparency of the atmosphere on clear sky at the Mont Rigi (Belgian Hautes-Fagnes) with the aim of underlining the particularities of the air composition in the Hautes-Fagnes region and quantifying its influence on global solar radiation. We used the following data: solar elevation, water vapor content (characterized by atmospheric water depth) and solar extraterrestrial irradiation at the top of the atmosphere. Due to a lack of direct information about atmospheric pollution, we compared global radiation received at the Hautes-Fagnes scientific station (SSHF) on clear sky with that stored in the same conditions in Uccle (Brussels), the Belgian reference station (Royal meteorological institute, RMI) and urban area. [less ▲]

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See detailEtude géomorphologique des barrages de travertin du Hoyoux
Franco, Bruno ULg; Houbrechts, Geoffrey ULg; Van Campenhout, Jean ULg et al

in Bulletin de la Société Géographique de Liège (2008)

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See detailCirculations atmosphériques et anomalies de fonte à la surface de la calotte glaciaire du Groenland
Fettweis, Xavier ULg; Mabille, Georges ULg; Erpicum, Michel ULg

in Bulletin de la Société Géographique de Liège (2008), 51

With the aim to study the impact of the 500hPa general circulation on the Greenland ice sheet surface melt simulated by the regional climate model MAR, we developed a new Circulation Type Classification ... [more ▼]

With the aim to study the impact of the 500hPa general circulation on the Greenland ice sheet surface melt simulated by the regional climate model MAR, we developed a new Circulation Type Classification (CTC) based on the 500hPa geopotential height from the ECMWF (re)analysis over the period 1958-2007. This CTC shows that the dominant mode of the regional atmospheric variability around the Greenland is linked to the North Atlantic Oscillation (NAO) and that the surface anomalies are highly correlated to the general circulation. It explains also why a record surface melt was observed during the summer 2007. The 27th August of 2003, where the temperature was 10°C higher than the normal, is the consequence of an almost unique 500 hPa circulation in the 50 last years. [less ▲]

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See detailVivre à quarante kilomètres de Rome : Juxtaposition des modes d’habiter dans les campagnes romaines
Schmitz, Serge ULg; Banini, Tiziana

in Bulletin de la Société Géographique de Liège (2008), 50

By a study of the rural ways of living, the paper analyses the dynamics of the countryside around Rome from a residential point of view. It describes the people and their expectations of the countryside ... [more ▼]

By a study of the rural ways of living, the paper analyses the dynamics of the countryside around Rome from a residential point of view. It describes the people and their expectations of the countryside. It suggests five types of ways of living the countryside. It stresses that the lack of land and planning policy leads to a dismantling of rural communities. Finally, the analysed communes are classified according to a typology of countryside (agricultural countryside, fragile countryside, suburban countryside, and living countryside). The analysis demonstrates the high spatial variability of the suburban countryside, especially when they are analysed at the village level. [less ▲]

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See detailGoogle Earth et Windows Live Search Maps: Analyse fonctionnelle et comparaison
Lonchay, Matthieu ULg

in Bulletin de la Société Géographique de Liège (2007), 49

« Google Earth » and « Windows Live Maps » are two services of web mapping recently developed by two competitive American corporations: « Google » and « Microsoft Corporation ». These services, whose ... [more ▼]

« Google Earth » and « Windows Live Maps » are two services of web mapping recently developed by two competitive American corporations: « Google » and « Microsoft Corporation ». These services, whose working requires specific computer technologies, provide a visualization of the Earth using an assemblage of satellite images and aerial photographs. This article is written to try to establish a functional analysis and a comparison of free versions of these two services of web mapping based on their technical characteristics, qualities of their sources, levels of provided functionalities and additional possibilities of paying versions. [less ▲]

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See detailLa localisation des grandes zones logistiques
Merenne-Schoumaker, Bernadette ULg

in Bulletin de la Société Géographique de Liège (2007), (49), 31-40

The growth of logistics has recently fathered many new zones of specialized activities, called most of the times parks or logistic platforms. The objective of the article consists in understanding their ... [more ▼]

The growth of logistics has recently fathered many new zones of specialized activities, called most of the times parks or logistic platforms. The objective of the article consists in understanding their development and in identifying the logics of location. For this purpose, we have first tried to identify better the domain of activities: types of logistics, carried out operations, concerned sectors, concerned operators... Afterwards, on the basis of data mostly coming from professional circles, we have attempted to identify the factors and constraints of the new zones location, and to specify the mechanisms of the new real estate business linked to those zones, our goal consisting in bringing out the main principles of location on the scale of the countries, regions and sites choices. In the light of this first analysis, the logic seems pretty specific and takes place undoubtedly between the logic of industries and services. [less ▲]

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See detailLes images satellitaires prises en période de sécheresse, outil utile pour la cartographie géologique de la Belgique
Salmon, Marc ULg; Ozer, André ULg; Pissart, Albert ULg

in Bulletin de la Société géographique de Liège (2007), 49

Des études antérieures ont montré que, en Wallonie, des limites lithologiques de certaines formations primaires peuvent apparaître sur des photos aériennes prises en période de sécheresse. La très haute ... [more ▼]

Des études antérieures ont montré que, en Wallonie, des limites lithologiques de certaines formations primaires peuvent apparaître sur des photos aériennes prises en période de sécheresse. La très haute résolution de certaines images satellitaires actuelles (0,61m en panchromatique et 2,44m en multispectral) permet également de distinguer la structure géologique sur des images saisies dans des conditions de sécheresse similaires. Ainsi, l’image Quickbird couvrant la région de Wellin et Beauraing (provinces de Luxembourg et Namur) et datant du 21 juillet 2006, soit après 51 jours d’absence de précipitations, montre de façon particulièrement visible la structure géologique dans les roches finement litées de l’Eifelien. [less ▲]

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See detailApproche méthodologique pour la délimitation des espaces de liberté des rivières du massif ardennais
Snijders, Jean-Philippe; Hallot, Eric ULg; Houbrechts, Geoffrey ULg et al

in Bulletin de la Société Géographique de Liège (2006), 48

Dans les schémas départementaux d’aménagement et de gestion des cours d’eau (France), le concept d’espace de liberté des cours d’eau, introduit en 1991, attribue à la rivière un espace de mobilité propre ... [more ▼]

Dans les schémas départementaux d’aménagement et de gestion des cours d’eau (France), le concept d’espace de liberté des cours d’eau, introduit en 1991, attribue à la rivière un espace de mobilité propre, de manière à restaurer la dynamique naturelle d’érosion des berges. Une partie de la méthodologie proposée repose sur l’utilisation de documents cartographiques anciens en vue de déterminer les espaces de divagation historique des cours d’eau. Cette démarche a été appliquée à différentes rivières du massif ardennais (Ourthe, Amblève, Semois, Rulles). Les espaces de mobilité obtenus pour ces rivières étant assez réduits, il a été nécessaire de prendre en considération les erreurs liées à la correction géométrique et au géoréférencement des différents documents utilisés. L’utilisation des microscories, rejets de l’ancienne industrie du fer, en tant que marqueur stratigraphique, nous a permis de tester, sur plusieurs rivières, les vitesses d’érosion latérale obtenues par la méthode cartographique. En conclusion, la méthode cartographique entraîne une nette surestimation des vitesses d’érosion latérale et des espaces de mobilité des cours d’eau dans leur plaine alluviale. [less ▲]

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See detailTechniques de positionnement par satellites
Donnay, Jean-Paul ULg; Warnant, René ULg

in Bulletin de la Société Géographique de Liège (2006), 47

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See detailDévelopper une approche par compétences dans la formation universitaire. Bilan de trois expériences en géographie urbaine et économique
Merenne-Schoumaker, Bernadette ULg

in Bulletin de la Société Géographique de Liège (2006), (48), 55-64

In this article, we’ll be wondering about the point, the challenges and the limits of integrating competences in Higher Education, starting from three experiences lead in Urban and Economic Geography. For ... [more ▼]

In this article, we’ll be wondering about the point, the challenges and the limits of integrating competences in Higher Education, starting from three experiences lead in Urban and Economic Geography. For this purpose, we’ve managed to combine works from Higher Education specialists and observations from the field. This reflection has been built in three stages. First, we’ll be reminding the foundations and specificities of the competence based approach. Then, we’ll be analysing our three experiences with the help of a common grid allowing us to successively consider the original needs and motivations, the process design, its trial and its adjustment. Finally, we’ll be trying to draw conclusion in terms of impacts on the students learning process, and impacts on the way teachers approach their teaching process, its limits and constraints. [less ▲]

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See detailL’effet de l’atmosphère terrestre sur les GNSS : une perturbation ou un signal géophysique ?
Warnant, René ULg

in Bulletin de la Société Géographique de Liège (2006), 47

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See detailParamètres hydrologiques et physico-chimiques de sources du Crétacé du Pays de Herve et de la Hesbaye sèche
Mols, J.; Petit, François ULg

in Bulletin de la Société Géographique de Liège (2005)

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See detailEvaluation des puissances spécifiques de rivières de moyenne et de haute Belgique
Petit, François ULg; Hallot, Eric ULg; Mols, J. et al

in Bulletin de la Société Géographique de Liège (2005)

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See detailVariabilité spatio-temporelle de l’albédo. Analyse menée à la résolution métrique
Van Durme, G.; Erpicum, Michel ULg

in Bulletin de la Société Géographique de Liège (2005), 46

Albedo is a climatic factor that has been barely studied and thus is badly understood. However, it has a certain influence on our climate. This influence is especially visible in case of land use changes ... [more ▼]

Albedo is a climatic factor that has been barely studied and thus is badly understood. However, it has a certain influence on our climate. This influence is especially visible in case of land use changes, such as deforestation. The aim of the study presented in this paper is to increase the current knowledge on albedo and the factors that influence it. To achieve this, a field survey was conducted. Not all factors could be studied during the field campaign; among those that were effectively observed, the most important ones – those that were responsible for the biggest changes in albedo – were the development of vegetation, the presence of snow and the daily variation of the height of the sun. [less ▲]

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See detailLes "systèmes d'information géographique" (SIG) : Préliminaires à un usage dans l'enseignement.
Donnay, Jean-Paul ULg

in Bulletin de la Société Géographique de Liège (2005), 45

A few years after their insertion into English language education, the geographical information systems (GIS) endeavour to force their way into French language secondary education. Several experiments are ... [more ▼]

A few years after their insertion into English language education, the geographical information systems (GIS) endeavour to force their way into French language secondary education. Several experiments are carried out, individually or institutionally. However they do not dispel the ambiguity about the GIS concept. On the contrary, they tend to consider GIS as no more than a software support, essentially devoted to cartography. This communication tries to show the difference between, on the one hand, a GIS in the meaning given by the systemic modelling of organizations, and, on the other hand, a GIS software able to be used in secondary education. [less ▲]

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