Glacierretreat, mass-balance and thinning : Sermilik Glacier, South Greenland
Cold area ; Glacier ; Glacier mass balance ; Glacierretreat ; Global Positioning System ; Greenland ; Ice sheet ; Model ; Remote sensing ; Satellite imagery
Années 1985-2000 ; Bilan de masse ; Calotte glaciaire ; GPS ; Glacier ; Groenland ; Image satellite ; Modèle ; Recul du glacier ; Télédétection ; Zone froide
In this paper, the retreat pattern of the Sermilik glacier tongue is documented together with observations of mass-balance conditions based on measurements carried out during the balance-years 2001/2002 and 2002/2003. Estimates of thinning along
the Sermilik Glacier catchment area have been derived from positive-degree-day modelling using monthly mean air temperatures at Narsarsuaq. An attempt is made to distinguish between the dynamic and mass-balance contributions, accountable for the glacier volume
Variations of italian glaciers between 1980 and 1999 inferred by the data supplied by the Italian Glaciological Committee
Glacier ; Glacier fluctuation ; Glacierretreat ; Ground survey ; Italy ; Years 1980-89 ; Years 1990-99
Années 1980 ; Années 1990 ; Fluctuation du glacier ; Glacier ; Italie ; Mesure de terrain ; Recul du glacier
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)
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
Onset of rapid calving and retreat of Glaciar San Quintin, Hielo Patagónico Norte, Southern Chile
Chile ; Glacier ; Glacier fluctuation ; Glacierretreat ; Map ; Nineteenth Century ; Twentieth Century
Carte ; Chili ; Fluctuation du glacier ; Glacier ; Recul du glacier ; Siècle 19 ; Siècle 20
Fluctuations au 19ème et 20ème siècles du San Quintin Glaciaire dans le contexte du comportment historique du glacier autour de Hielo Patagónico Norte et suggestion d'explications possibles pour le calendrier et la nature du recul récent.
the progressive decrease towards exhaustion of these glaciers, located at the latitude of 44° N, highlighting the factors affecting their retreat. All available data sources were investigated for this work including : the annual glaciers fluctuations record
In the southernmost tract of the Alps (Italian-French Maritime Alps), extensively covered by glaciers during the Last Glacial Maximum, about 30 small glaciers were present by the end of the Little Ice Age. The aim of this paper is to document
, comparative analyses of historical maps and multi-temporal oblique photographs and direct surveys in the field. The history of the Maritime Alps glaciers fluctuations was thoroughly reconstructed.
Estimates of slope retreat around the Ivory Glacier catchment, South Island, New Zealand
Bassin-versant ; Dynamique glaciaire ; Glacier ; Géologie régionale ; Mesure de terrain ; Montagne ; Nouvelle-Zélande ; South Island ; Technique de recherche
Catchment area;Watershed ; Glacier ; Glacier dynamics ; Ground survey ; Mountain ; New Zealand ; Regional geology ; Research technique ; South Island
This paper presents estimates for short (1 yr) and medium-term (10-100 yr) slope retreat rates around a small glaciated catchment on the Main Divide of the Southern Alps (Ivory Glacier, New Zealand).
The retreat of Tien Shan glaciers (Kyrgyzstan) since the Little Ice Age estimated from aerial photographs, lichenometric and historical data
Aerial photography ; Climatic variation ; Geomorphological map ; Glacier ; Glacierretreat ; Historical geography ; Kyrgyzstan ; Lichenometry ; Little ice age ; Map ; Moraine ; Tien Shan ; Years 1980-89
Années 1980 ; Carte ; Carte géomorphologique ; Glacier ; Géographie historique ; Kirghizistan ; Lichénométrie ; Moraine ; Petit âge glaciaire ; Photographie aérienne ; Recul du glacier ; Tien Chan ; Variation climatique
The retreat of 293 glaciers in the Tien Shan Mountains from their maximum extent during the Little Ice Age (LIA) is estimated using aerial photographs from 1980 to 1985 and maps at a scale of 1:25 000, constructed during period 1956-1990. Two
indices of changes are used : the linear distance from the glacier terminus to its Little Ice Age moraine and the difference in absolute elevation of the terminus and the moraine. Historical information about the front positions of glaciers in the 1880s
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
Alps (The) ; Data base ; Glacier ; Glacier fluctuation ; Glacierretreat ; Italy ; Lombardia ; Mountain ; Twentieth Century
Alpes ; Base de données ; Fluctuation du glacier ; Glacier ; Italie ; Lombardia ; Montagne ; Recul du glacier ; Siècle 20
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
underwent a generalized retreat, with one well documented readvance episode (1970s-mid-1980s) and a poorly documented one (early 1920s).
Geomorphic effects of the retreat of Jamapa Glacier, Pico de Orizaba volcano (Mexico)
Coulée de lave ; Déglaciation ; Glacier ; Géomorphologie ; Haute montagne ; Mexique ; Modèle ; Moraine ; Pergélisol ; Pico de Orizaba ; Pyroclastique ; Périglaciaire ; Volcan
Deglaciation ; Geomorphology ; Glacier ; High mountain ; Lava flow ; Mexico ; Model ; Moraine ; Periglacial features ; Permafrost ; Pyroclastic ; Volcano
This paper analyses the geomorphic processes developed during past decades in the most important glacier valley of Pico de Orizaba: the Jamapa Valley. These processes are due to the rapid retreat of the glacier and to the characteristics
of the volcanic materials. Data on the thermic regime of ice cover deposits and their contrast with that of the glacier are presented. A model of the geomorphic evolution of the area below a retreatingglacier is summarized.
The glaciers of Mount Antelao (Dolomites, Italy) since the Little Ice Age
Alps (The) ; Glacier ; Glacier budget ; Glacierretreat ; Italy ; Little ice age
Alpes ; Années 2000 ; Bilan glaciaire ; Glacier ; Italie ; Petit âge glaciaire ; Recul du glacier
The study has estimated the reduction of the glaciers of Mt Antelao (Dolomites, Italy) from the Little Ice Age (LIA) to today using bibliographic and morphological data as well as modern techniques of data elaboration and processing. - (NF)
Based on a review of observations on different types of calving glaciers, a simple calving model is proposed. Advance or retreat of the calving front is not driven by changes in the calving rate, but by flow-induced changes in the geometry
of the terminal region. This model is essentially different from prior suggestions in which some empirical relation - most commonly the water-depth model - is used to calculate calving rate and the rate of retreat or advance of the terminus.
Arctic Region ; Cold area ; Dating ; Erosion ; Holocene ; Model ; Periglacial features ; Rock glacier ; Sediment transport ; Svalbard
glacier transition zone. The model was applied to 2 rock glaciers at Prins Karls Forland, Svalbard. The main goal of the model is to produce a reasonable estimate of rock glacier initiation age and corresponding rockwall retreat rates, based on geometrical
This paper presents a simple analytical model for estimating rock glacier age by coupling the ratio of frontal advance to total rock glacier length and the ratio of debris volume in the rock glacier to present debris flux in the talus cone-rock
time a complete synopsis of various glaciological and geographical aspects of longterm glacierretreat in the period since 1850. Attempts were made, based on the new inventory data, to model potential ice decay scenarios for the swiss Alps
The study presented summarizes selected results of a nationwide glacier inventory project supported by the Swiss national Research Programme (NRP 31) on Climate Changes and natural Catastrophes completed in 1999. The data were obtained
by the glaciological reconstruction and homogeneous parameterization of the 1850 glacier situation in the Swiss Alps (the last advance period of the Little Ice Age). The statistical comparison with the present-day glaciation (recorded in 1973) provides for the first
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
Bibliography ; Climatic warming ; Glacier ; Glacier mass balance ; Glacierretreat ; Global change ; Ice sheet ; Mountain ; Remote sensing ; Research technique
Bibliographie ; Bilan de masse ; Calotte glaciaire ; Changement global ; Glacier ; Montagne ; Recul du glacier ; Réchauffement climatique ; Technique de recherche ; Télédétection
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.
behavior of the Taku and Le Conte glaciers locates in southeast Alaska. The AA. propose that these asynchronous advances and retreats reflect changes in iceberg calving rates with time.
Observations of fjord glaciers along the coast of Alaska indicate that their detailed fluctuations may have little or no direct relation to climate. In this paper the AA. further examine this question by focusing on the asynchronous Late-Holocene
Change of Tipra Glacier in the Garhwal Himalaya, India, between 1962 and 2008
Climatic change ; Garhwal ; Glacier ; Glacier mass balance ; Glacierretreat ; Himalaya ; India ; Satellite imagery
Années 1962-2008 ; Bilan de masse ; Changement climatique ; Garhwal ; Glacier ; Himalaya ; Image satellite ; Inde ; Recul du glacier
In this study, satellite data, maps and ground-based measurements have been used to obtain the snout retreat and surface changes of the Tipra Glacier in the Alaknanda river basin of the Garhwal Himalaya for the period 1962–2008. It is revealed
that a large part of the glacier has been detached from the main trunk and separated into the Tipra and Rataban Glaciers as it had one outlet (snout) in 1987. Between 1962 and 2002 estimated surface area reduced by ~18% and snout retreat was ~535 m. Measurement
of snout positions of the Tipra and Rataban Glaciers from 2002 to 2008 indicates an enhanced annual retreat. The observations compared with the other studies carried out in the region show a significant reduction in glacier areas. The increased retreat rate
of glacier snouts is probably a direct consequence of global warming.
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)
Glacier changes in Upper Tons River basin, Garhwal Himalaya, Uttarakhand, India
Climatic data ; Comparative study ; Garhwal ; Glacier ; Glacier dynamics ; Glacierretreat ; Himalaya ; India ; Meltwater ; Precipitation ; Temperature ; UttarPradesh ; Watershed
Années 2000-2003 ; Bassin-versant ; Donnée climatique ; Dynamique glaciaire ; Eau de fonte ; Etude comparée ; Garhwal ; Glacier ; Himalaya ; Inde ; Précipitation ; Recul du glacier ; Température ; Uttar Pradesh
shrinking in the area of the glaciers. However, frontal retreat rates are not uniform in all glaciers even under the same climatic domain. Study on the fragmented glaciers shows a continuous and unusual retreat of glaciers after 1990. This uncertainty may
precipitation in last few decades. Further more studies on these glaciers will shed light on several factors influencing changes and retreat on the Himalayan glacier systems.
The AA. estimate the spatial changes in the Jaundhar, Jhajju and Tilku glaciers in the Tons River basin (Garhwal Himalaya) between 1962 and 2010 using Landsat Satellite data, topographic maps along with field surveys. They estimate the overall
possibly be due to size, surface morphology and gradient of the individual glaciers and can be attributed to degeneration and rapid melting on the glaciers. Meteorological data available from this region show increasing summer temperature and less winter
The contemporary retreat of Tasman Glacier, Southern Alps, New Zealand, and the evolution of Tasman proglacial lake since AD 2000
Glacier ; Glacierretreat ; Mountain ; New Zealand ; Proglacial lake ; South Island ; The 2000's
Années 2000 ; Glacier ; Lac proglaciaire ; Montagne ; Nouvelle-Zélande ; Recul du glacier ; South Island
In the Aoraki/Mt Cook National Park, the retreat of Tasman Glacier between 2000 and 2008 has occurred in 2 distinct periods : an initial period of relatively slow retreat prior to 2006, followed by a secondary period of rapid retreat between 2006
and 2008. During the period 2000–2006, the controlling process of ice loss at the terminus was iceberg calving resulting from thermal undercutting. In contrast, the retreat between 2006 and 2008 was probably controlled by buoyancy-driven iceberg calving