inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

Résultats de la recherche (2813 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • The Hydrological significance of rock glaciers
  • Amérique du Sud ; Andes ; Glacier ; Glacier rocheux ; Géographie de l'Amérique ; Typologie
  • Différents types de glaciers rocheux des Andes.
  • A rock glacier/debris-covered glacier system at Galena Creek, Absaroka Mountains, Wyoming
  • Special issue : the geomorphic and climatic significance of rock glaciers
  • Avancée du glacier ; Etats-Unis ; Glacier ; Glacier rocheux ; Géochronologie ; Moraine ; Paléoclimatologie ; Pergélisol ; Wyoming
  • Geochronology ; Glacier ; Glacier advance ; Moraine ; Palaeoclimatology ; Permafrost ; Rock glacier ; United States of America ; Wyoming
  • At Galena Creek, the ice/debris system has alternated between rock glacier and debris-covered glacier modes due to changes in the size of the accumulation area. These results have important implications for paleoclimatic studies of the ice
  • in the Galena Creek Rock Glacier.
  • Recent trends in the Lemon Creek Glacier, Alaska
  • Glaciers and Late Quaternary environments of Alaska: II. Essays in honor of William O. Field
  • Alaska ; Bilan de masse ; Cartographie ; Fluctuation du glacier ; Glacier ; Glaciologie ; Géodésie ; Marge glaciaire ; Photogrammétrie
  • Alaska ; Cartography ; Geodesy ; Glacier ; Glacier fluctuation ; Glacier margin ; Glacier mass balance ; Glaciology ; Photogrammetry
  • This paper reports the 1989 re-mapping of Lemon Creek Glacier, and, in conjunction with 1948 and 1957 maps of the glacier, calculation of 9-year and 32-year changes of glacier mass and terminal position. As in the earlier maps, the new map
  • is at a scale of 1:10,000 with a 5-m contour interval for the glacier surface. Changes between 1957 and 1989 were determined by use of the geodetic method for determining mass balance.
  • Intra-annual variations in glacier motion: a review
  • Ablation glaciaire ; Avancée du glacier ; Dynamique glaciaire ; Eau de fonte ; Glacier ; Glaciologie ; Variabilité interannuelle
  • Glacial ablation ; Glacier ; Glacier advance ; Glacier dynamics ; Glaciology ; Interannual variability ; Meltwater
  • The aim of this article is to review the characteristics and causes of temporal variations in the horizontal and vertical motion of glaciers at less than annual time intervals. These variations have been identified from measurements made both
  • beneath and on the surface of glaciers.
  • Recent behaviour of the Debeli Namet glacier, Durmitor, Montenegro
  • Datation ; Fluctuation du glacier ; Glacier ; Lichénométrie ; Montagne ; Monténégro ; Moraine
  • Dating ; Glacier ; Glacier fluctuation ; Lichenometry ; Moraine ; Mountain
  • A small cirque glacier is present in a north-east facing cirque on the mountain of Šljeme in the Durmitor massif. Sediment ridges in front of this glacier are interpreted as moraines can be attributed to recent glacier activity over the past 130
  • Glaciers
  • Antarctique ; Bibliographie ; Changement global ; Déglaciation ; Fluctuation du glacier ; Glacier ; Glacier rocheux ; Glaciologie ; Inlandsis ; LANDSAT ; Télédétection
  • Antarctica ; Bibliography ; Deglaciation ; Glacier ; Glacier fluctuation ; Glaciology ; Global change ; Inland ice ; LANDSAT ; Remote sensing ; Rock glacier
  • Le point sur les études concernant les glaciers, la glaciologie et les nombreuses controverses inhérentes à cette discipline.
  • Atmospheric circulation and variations in Scandinavian glacier mass balance
  • Atlantique Nord ; Avancée du glacier ; Bilan de masse ; Circulation atmosphérique ; Dynamique de l'atmosphère ; Europe ; Fluctuation du glacier ; Glacier ; Interaction océan-atmosphère ; Oscillation climatique ; Scandinavie ; Variation saisonnière
  • Atmospheric circulation ; Atmospheric dynamics ; Climate oscillation ; Europe ; Glacier ; Glacier advance ; Glacier fluctuation ; Glacier mass balance ; North Atlantic Ocean ; Ocean atmosphere interaction ; Scandinavia ; Seasonal variation
  • Mountain glaciers in Scandinavia are currently advancing while most of the monitored mountain glaciers of the world are retreating. The AA. examine how the mass balance of glaciers in Scandinavia are correlated with atmospheric variability
  • The status of research on glaciers and global glacier recession : a review
  • Bibliographie ; Bilan de masse ; Calotte glaciaire ; Changement global ; Glacier ; Montagne ; Recul du glacier ; Réchauffement climatique ; Technique de recherche ; Télédétection
  • Bibliography ; Climatic warming ; Glacier ; Glacier mass balance ; Glacier retreat ; Global change ; Ice sheet ; Mountain ; Remote sensing ; Research technique
  • This review outlines the measurements that are available, new techniques that incorporate remotely sensed data, and major findings around the world. The focus is on changes in glacier area, rather than estimates of mass balance and volume changes
  • that address the role of glacier melt in global sea-level rise. The glacier observations needed for global climate monitoring are also outlined.
  • Glaciers et glaciers rocheux sur le versant Nord-Est du Viso (Alpes Cottiennes, Italie)
  • Géodynamique externe. Etude intégrée du milieu naturel
  • Alpes ; Glacier ; Glacier rocheux ; Italie ; Montagne ; Pergélisol ; Variation climatique
  • Alps (The) ; Climatic variation ; Glacier ; Italy ; Mountain ; Permafrost ; Rock glacier
  • Discussion de la mise en évidence du pergélisol dans tous les glaciers rocheux du versant NE du Viso, Italie, par une vingtaine de sondages électriques. Etude des relations qui ont pu exister entre glacier et glacier rocheux depuis la fin de la
  • Rock glaciers
  • Amérique du Sud ; Andes ; Forme fossile ; Genèse ; Glacier ; Glacier rocheux ; Glaciologie ; Géographie physique ; Montagne ; Périglaciaire ; Typologie
  • A glacier icecored rock glacier, Trollaskagi, Iceland
  • Ecoulement glaciaire ; Glacier rocheux ; Géographie de l'Europe ; Islande ; Périglaciaire ; Trollaskagi ; Vitesse d'écoulement
  • Etude des vitesses d'écoulement d'un glacier rocheux du nord de l'Islande : moins de 2 m en 8 ans (1977-1985), ce qui prouve que le glacier n'est plus alimenté à partir de l'amont. Ancien glacier progressivement recouvert par les débris issus du
  • The last glaciers of Greece
  • Chronostratigraphie ; Dryas ; Fluctuation du glacier ; Glacier ; Glacier rocheux ; Grèce ; Ipiros ; Limite d'enneigement ; Montagne ; Moraine ; Paléoclimatologie ; Quaternaire
  • Chronostratigraphy ; Glacier ; Glacier fluctuation ; Greece ; Moraine ; Mountain ; Palaeoclimatology ; Quaternary ; Rock glacier ; Snow line
  • Quatre phases différentes d'activité glaciaire sont enregistrées sur Smolikas, le plus haut sommet de la chaîne du Pindus, Grèce : une phase supplémentaire par rapport aux montagnes avoisinantes. Discussion des résultats des études
  • Holocene history of Bering Glacier, Alaska: a prelude to the 1993-1994 surge
  • Glaciers and Late Quaternary environments of Alaska: II. Essays in honor of William O. Field
  • Alaska ; Avancée du glacier ; Datation C 14 ; Dendrochronologie ; Fluctuation du glacier ; Glacier ; Géochronologie ; Géographie historique ; Holocène ; Moraine
  • Alaska ; C 14 dating ; Dendrochronology ; Geochronology ; Glacier ; Glacier advance ; Glacier fluctuation ; Historical geography ; Holocene ; Moraine
  • This paper examines the very recent rapid changes, surges, and presents a summary of Bering Glacier's activity during the Holocene. A perspective on the Holocene history of the Bering Glacier is presented as a backdrop for understanding
  • Variations of italian glaciers between 1980 and 1999 inferred by the data supplied by the Italian Glaciological Committee
  • Années 1980 ; Années 1990 ; Fluctuation du glacier ; Glacier ; Italie ; Mesure de terrain ; Recul du glacier
  • Glacier ; Glacier fluctuation ; Glacier retreat ; Ground survey ; Italy ; Years 1980-89 ; Years 1990-99
  • The study synthesises the analysis of those data relevant to the variation registred in the Italian glaciers during glaciological surveys carried out by the Italian Glaciological Committee between 1980 and 1999. The last twenty years of the 20th
  • century were characterized by a phase of general retreat of the glaciers, that followed an advancement phase that took place in the 70s and in the early 80s. The data matrix, which is largely incomplete, includes 335 glaciers. - (NF)
  • Advance and retreat phase of the Karakorum glaciers during the 20th century : case studies in the Braldo Valley (Pakistan)
  • Avancée du glacier ; Fluctuation du glacier ; Glacier ; Karakoram ; Montagne ; Pakistan ; Siècle 20
  • Glacier ; Glacier advance ; Glacier fluctuation ; Karokoram ; Mountain ; Pakistan ; Twentieth Century
  • Variations that took place at the terminus of some Karakorum glaciers (particularly the Baltoro Glacier and the Liligo Glacier) during the 20th century have been reconstructed using several methodologies. The two glaciers studied have shown
  • different behaviour at the termini, at least regarding the rate of variations. The Baltoro is one of the longest glaciers on the Earth : though characterized by phases of expansion (1913-1929, 1954-1987, 1990-1997) and of contraction (1929-1954, 1987-1990
  • ), the position of the terminus has moved over time with reduced variations compared to the dimensions of the overall glacier. The Liligo is a small and transversal glacier, already flowing into the Baltoro glacier, and it is characterised by phases of great
  • The fluctuations of Italian glaciers during the last century : a contribution to knowledge about alpine glacier changes
  • Alpes ; Base de données ; Fluctuation du glacier ; Glacier ; Italie ; Lombardia ; Montagne ; Recul du glacier ; Siècle 20
  • Alps (The) ; Data base ; Glacier ; Glacier fluctuation ; Glacier retreat ; Italy ; Lombardia ; Mountain ; Twentieth Century
  • This paper describes the recent evolution of Italian glaciers through ananalysis of all available terminus fluctuation data that the AA. have entered in a glaciers database (GLAD), containing 883 records collected on glaciers from 1908 to 2002
  • . Furthermore, a representative subset of data (249 glaciers located in Lombardy) was analysed regarding surface area changes. The glaciers were sorted by size classes according to length. The data showed that during the 20th century Italian Alpine glaciers
  • Changes of glaciers in Glacier Bay, Alaska, using ground and satellite measurements
  • Glaciers and Late Quaternary environments of Alaska:I. Essays in honor of William O. Field
  • Alaska ; Dynamique de la végétation ; Déglaciation ; Fluctuation du glacier ; Glacier ; LANDSAT ; MSS ; Télédétection
  • Alaska ; Deglaciation ; Glacier ; Glacier fluctuation ; LANDSAT ; MSS ; Remote sensing ; Vegetation dynamics
  • In this paper, the AA. use geographic information system techniques to merge maps with satellite data to study glacier-terminus changes and vegetation regrowth during deglaciation in and near Glacier Bay, Alaska.
  • Glaciological studies at Rae Glacier, Canadian Rocky Mountains
  • Ablation glaciaire ; Bilan de masse ; Canada ; Fluctuation du glacier ; Glacier ; Glaciologie ; Montagne ; Rocky Mountains ; Variabilité climatique
  • Canada ; Climatic variability ; Glacial ablation ; Glacier ; Glacier fluctuation ; Glacier mass balance ; Glaciology ; Mountain ; Rocky Mountains
  • The purpose of this paper is to report on glaciological investigations carried out at a single glacier in this region, the Rae Glacier. In 1990 and 1991 field research was completed to describe the physical glaciology of Rae Glacier
  • and to characterize historical glaciological trends at the site. The glacier has a lag time of 5 to 10 years, which confirms that it is sensitive to climatic fluctuations and responds to changes in mass balance within a very short time. This observation is supported
  • The Debeli Namet glacier from the second half of the 20th century to the present
  • Alpes ; Changement climatique ; Glacier ; Glaciologie ; Géomorphologie ; Monténégro ; Recul du glacier ; Siècle 20
  • Alps (The) ; Climatic change ; Geomorphology ; Glacier ; Glacier retreat ; Glaciology ; Montenegro ; Twentieth Century
  • The Debeli Namet glacier is one of two recent glaciers located in the south western Balkans, (Durmitor Mountain). The glacier is reducing at a rate slower than that of other southern European glaciers. It did not significantly fluctuate in size
  • in response to temperature increases that occurred at the end of the 20th and at the beginning of the 21st centuries. The A. presents partially revised data accompanied by results related to the glacier’s recent behaviour, its surroundings and climate. - (IKR)
  • Decadal and millennial velocities of rock glaciers, Selwyn Mountains, Canada
  • Special issue : the geomorphic and climatic significance of rock glaciers
  • Avancée du glacier ; Canada ; Ecoulement glaciaire ; Glacier ; Glacier rocheux ; Lichénométrie ; Yukon
  • Canada ; Glacial flow ; Glacier ; Glacier advance ; Lichenometry ; Rock glacier ; Yukon
  • The intent of this work is to : 1) present surface velocities on 15 rock glaciers averaged over 12 years (1983-1995) in the Selwyn Mountains; 2) calculate long-term velocities using rock glacier length and lichen age; 3) compare the velocities