On rates and acceleration trends of global glacier mass changes
Action anthropique ; Bilan de masse ; Changement global ; Effet de serre ; Fluctuation du glacier ; Glacier ; Holocène ; Monde ; Tardiglaciaire
Glacier ; Glacier fluctuation ; Glacier mass balance ; Global change ; Greenhouse effect ; Holocene ; Human impact ; Lateglacial ; World
Worldwide glacier mass changes are considered to represent natural key variables within global climate-related monitoring programmes, especially with respect to strategies concerning early detection of enhanced greenhouse effects on climate
Changes of snow cover thickness measured by conventional mass balance methods and by global positioning system surveying
are likely to provide a large amount of information on within-year and between-year changes of surface topography and are not subject to the errors in mass balance calculations which arise from probing snow depths along selected profiles. Kinematic GPS
Bilan de masse ; Calotte glaciaire ; Changement global ; Dynamique glaciaire ; Glaciologie ; Groenland ; Modèle ; Méthodologie ; Niveau marin ; Télédétection
Glacier dynamics ; Glacier mass balance ; Glaciology ; Global change ; Greenland ; Ice sheet ; Methodology ; Model ; Remote sensing ; Sea level
will be on airborne and satellite remote sensing methods. Remote sensing observations combined with ice sheet modelling seems an alternative way of obtaining long-term and short-term ice sheet contributions to sea-level change.
changes which are clearly of less precision than the compilation of annual ground data. Airborne surface profiling in 1995, and global positioning system leveling transects in 1996-1998 update the record of surface elevation changes over the past decade
Mass changes of Blue Glacier, USA, are calculated from topographic maps made from vertical aerial photography in late summer of 1939, 1952, 1957, and 1987, along with laser altimetry flown in June 1996. Changes in elevation between maps were
Comparing traditional mass balance measurements with long-term volume change extracted from topographical maps : a case study of Storbreen glacier in Jotunheimen, Norway, for the period 1940-1997
the interpretation of SAR imagery over typical late-summer glaciological zones of temperate alpine glaciers and the potential application of RADARSAT SAR for mass balance studies and climate change detection in general.
. The terms of the kinematic boundary condition, involving surface-altitude changes with time, surface slopes, and horizontal surface velocities, are determined using high precision aerial photogrammetry. The AA. give a description of the method, present