Système d’information géographique et aménagement du territoire

in Fierro, Giuliano (Ed.) MED PICTURE : Mediterranean Project for the Improvement of Cooperation in Training between Universities, Regions and Enterprises (2002)

Fréquence et importance du charriage dans des rivières à charge de fond graveleuse

in Géomorphologie : Relief, Processus, Environnement (1996)

L'impact des aménagements récents des rivières wallonnes. Exemples de la Meuse, de l'Ourthe et du Geer

in Le fleuve et ses métamorphoses (1993)

Contribution to the development of an erosivity index adapted to the prediction of erosion in Belgium

in Earth Surface Processes & Landforms (1989), 14

Les transports en suspension et en solution dans la Burdinale, affluent principal de la Mehaigne

in Bulletin de la Société Géographique de Liège (1989)

Des traces de glace de ségrégation dans la grotte de Remouchamps (Belgique) : conséquences en ce qui concerne la sédimentation et la paléoclimatologie

in Annales de la Société Géologique de Belgique (1988), 111

In countries with a modern temperate climate, the extent of former permafrost is generally estimated from the observation of ice wedge casts, remnants of pingos and palsas, and periglacial involutions ... [more ▼]

In countries with a modern temperate climate, the extent of former permafrost is generally estimated from the observation of ice wedge casts, remnants of pingos and palsas, and periglacial involutions. These features give no indication at all about the depth of permafrost and are ineffective in identifying the limits of former permafrost. A new tool for this research may be found in caves. We already know that speleothems did not grow -- or grew little — during the colder periods of the last glaciation, probably because of the impervious nature of the frozen ground. The discovery, in the Remouchamps Cave, of the marks of segregation ice in loose fills proves that the temperature did fall below 0°C. Only one cycle of freeze/thaw would have been sufficient to create these marks wich have been preserved because there was indeed little biological activity in this environment. The temperature in such caves is generally very close to the mean annual temperature outside the caves. This evidence will thus be useful for tracing the southern limit of the permafrost in Europe. When the permafrost thawed, the melting of the ice caused mass movements in the cave sediments. The ice had blocked some passages and water levels rose to abnormally high levels, depositing sediments at these levels. [less ▲]

Macroseismic map and animal behavior

in Bulletin of the INQUA Neotectonics Commission (1986), 9

Dépôt de carbonate de calcium par congélation et teneur en bicarbonate des eaux résiduelles

in Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences (1965), 260

CaCO3 crystals were obtained by freezing of bicarbonated water. Residual water was supersaturated. CO2 degassing going along with precipitation makes it an irreversible process. Hence the extreme hardness ... [more ▼]

CaCO3 crystals were obtained by freezing of bicarbonated water. Residual water was supersaturated. CO2 degassing going along with precipitation makes it an irreversible process. Hence the extreme hardness of some natural waters during frost. [less ▲]