Results 21 to 30 of about 977,525 (304)

Ice velocity and thickness of the world’s glaciers

Nature Geoscience, 2022
The effect of climate change on water resources and sea-level rise is largely determined by the size of the ice reservoirs around the world and the ice thickness distribution, which remains uncertain. Here, we present a comprehensive high-resolution mapping of ice motion for 98% of the world's total glacier area during the period 2017-2018. We use this
Millan, Romain, Mouginot, Jérémie, Rabatel, Antoine, Morlighem, Mathieu   +3 more
openaire   +5 more sources

Flow velocities of Alaskan glaciers [PDF]

Nature Communications, 2013
Our poor understanding of tidewater glacier dynamics remains the primary source of uncertainty in sea level rise projections. On the ice sheets, mass lost from tidewater calving exceeds the amount lost from surface melting. In Alaska, the magnitude of calving mass loss remains unconstrained, yet immense calving losses have been observed.
Evan W, Burgess, Richard R, Forster, Christopher F, Larsen   +2 more
openaire   +2 more sources

The Spatio-Temporal Patterns of Glacier Activities in the Eastern Pamir Plateau Investigated by Time Series Sub-Pixel Offsets From Sentinel-2 Optical Images

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
The eastern Pamir Plateau, with a mean altitude of 5000 m, forms a large-scale glacier region with a size of 2054 km2 that serves as an important environmental climate condition for central Asia. In this article, we estimated the spatio-temporal patterns
Jue Zhang, Ping He, Xiaoping Hu, Zhumei Liu   +3 more
doaj   +1 more source

SURFACE VELOCITY DYNAMICS OF SAMUDRA TAPU GLACIER, INDIA FROM 2013 TO 2017 USING LANDSAT-8 DATA [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
In glacier dynamics, surface velocity of glacier is an important parameter to understand the behaviour of glacier in absence of mass balance and long-term glacier area change information.
R. Sahu, R. D. Gupta
doaj   +1 more source

57-Year Ice Velocity Dynamics in Byrd Glacier Based on Multisource Remote Sensing Data

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Long time-series glacier ice velocity reflects the local climate changes and can be used to estimate mass balance (MB) changes, which is a critical parameter for understanding of glacier–climate interactions and prediction of sea level rise ...
Xiaohan Yuan, Gang Qiao, Yanjun Li
doaj   +1 more source

Line-of-Sight Glacier Velocity Estimation of Transboundary Glaciers in the Eastern Himalayas Using High-Resolution TerraSAR-X Data

Proceedings, 2023
Glacier velocity is one of the critical parameters for understanding the current health status of a glacier. According to the momentum law, mass is inversely proportional to velocity. A higher velocity may indicate a lower mass.
Arpan Sharma, Mousumi Gupta, Narpati Sharma, Santanu Gupta   +3 more
doaj   +1 more source

Interannual and Seasonal Variability of Glacier Surface Velocity in the Parlung Zangbo Basin, Tibetan Plateau

Remote Sensing, 2020
Monitoring glacier flow is vital to understand the response of mountain glaciers to environmental forcing in the context of global climate change. Seasonal and interannual variability of surface velocity in the temperate glaciers of the Parlung Zangbo ...
Jing Zhang, Li Jia, Massimo Menenti, Shaoting Ren   +3 more
doaj   +1 more source

Glacier velocities across the central Karakoram [PDF]

Annals of Glaciology, 2009
AbstractOptical matching of ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) satellite image pairs is used to determine the surface velocities of major glaciers across the central Karakoram. The ASTER images were acquired in 2006 and 2007, and cover a 60×120km region over Baltoro glacier, Pakistan, and areas to the north and west.
Luke Copland, Sierra Pope, Michael P. Bishop, John F. Shroder,, Penelope Clendon, Andrew Bush, Ulrich Kamp, Yeong Bae Seong, Lewis A. Owen   +8 more
openaire   +1 more source

Influence of subglacial drainage system evolution on glacier surface motion: Haut Glacier d'Arolla, Switzerland [PDF]

, 2002
The relationship between the evolution of subglacial drainage system morphology and spatial patterns of glacier surface velocity was investigated using dye tracing experiments and ground surveying throughout the 1995 melt season at Haut Glacier d'Arolla,
Ian Willis, Sharp, M., Wohlleben, T., Peter Nienow, Mair, D., Martin Sharp, Willis, I., Trudy Wohlleben, Douglas Mair, Nienow, P.   +9 more
core   +1 more source

A Monte-Carlo error analysis for basal sliding velocity calculations [PDF]

, 2006
Since glacier beds are mostly inaccessible, numerical inversion of the surface velocity field provides a valuable method for calculating the basal shear stress and sliding velocity. However, previous theoretical studies (limited either to planar slabs or
Nienow, Peter, Chandler, D. M., Hubbard, B. P.   +2 more
core   +1 more source