Results 271 to 280 of about 5,146 (301)

Ice thickness distribution of Himalayan glaciers inferred from DInSAR-based glacier surface velocity

Environmental Monitoring and Assessment, 2022
Retrieval of glacier ice thickness is extremely important for monitoring water resources and predicting glacier dynamics and changes. The inter-annual glacier ice thickness observations (more than 5 years) exploit the glacier mass changes. Ice thickness is one of the important parameters to predict the future sea-level rise.
Bala Raju Nela, Gulab Singh, Anil V. Kulkarni   +2 more
openaire   +2 more sources

The need for global glacier speed to combine measured velocity with balance velocity

2020
<p>One of the outstanding glaciological research questions is how glaciers respond dynamically to climate change and how this varies regionally. Ice-velocity changes occur on an interannual scale in response to mass-balance forcing changing the glacier geometry and therefore the driving stress.
Hester Jiskoot, Easton DeJong, Wesley Van Wychen, Jade Cooley   +3 more
openaire   +1 more source

Velocity Changes of Rock Glaciers and Induced Hazards

2014
Recent observations and geodetic measurements in the European Alps show that changes are occurring on rock glacier dynamics, ranging from moderate velocity variations to strong acceleration or even total collapse. These changes can be related to the ground temperature and to climate warming.
P. Schoeneich, X. Bodin, T. Echelard, V. Kaufmann, A. Kellerer-Pirklbauer, J. -M. Krysiecki, G. K. Lieb   +6 more
  +6 more sources

Glacier Velocity Estimation by Means of a Polarimetric Similarity Measure

IEEE Transactions on Geoscience and Remote Sensing, 2013
The contribution of polarimetric synthetic aperture radar (PolSAR) images compared with that of single-channel SAR images in terms of temporal scene characterization has been found and described to add valuable information in the literature. However, despite a number of recent studies focusing on single-polarized glacier monitoring, the potential of ...
openaire   +1 more source

The distribution of stress and velocity in glaciers and ice-sheets

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1957
Abstract A block of ice resting upon a rough slope forms a theoretical model of a glacier or an ice-sheet, the sides of the glacier valley being ignored. Previous papers have described two types of steady flow in this model: (a) laminar flow, in which the longitudinal velocity gradient r is zero, and (b) extending or compressive flow,
openaire   +2 more sources

Determination of Glacier Velocities on King George Island (Antarctica) by DInSAR

2006 IEEE International Symposium on Geoscience and Remote Sensing, 2006
The Antarctic Peninsula is a region highly sensitive to climate change. For ice dynamic modelling and climatic impact studies several parameters have to be known. Radar interferometry is a feasible method in such remote areas to derive velocity fields.
Albert Moll, Matthias H. Braun
openaire   +1 more source

Seismic Wave Velocities in the Hans Glacier, Spitsbergen

2013
Direct measurements of P and S wave velocities were performed by a special seismometer array on the Hans Glacier, in the vicinity of the Polish Polar Station Hornsund, Spitsbergen. Artificial quakes were generated at a point of central location between the seismometer sites. The calculated velocities are: VP = 3,620 m/s, VS = 1,780 m/s.
openaire   +1 more source

Impacts of supraglacial lakes and snowmelt on glacier velocity on the example of the Baltoro Glacier in Pakistan

Millionen von Menschen in Pakistan leben entlang des Indus und sind auf das Schmelzwasser der Gletscher im Karakorum angewiesen. Gletscherschmelzwasser steuert ebenso die Gletscherdynamik, die eine relevante Information über die Entwicklung der Gletscher in einem sich ändernden Klima ist, an.
openaire   +2 more sources

Seasonal variations in glacier velocity in the High Mountain Asia region during 2015–2020

Journal of Arid Land, 2023
Shiyin Liu, Jing Ding
exaly  

Towards a glacier velocity field at the scale of the Himalayas

2013
Himalayan glaciers are under pressure due to climate change but spatial and temporal characteristics of glaciers change are not very well constrained. The fate of Himalayan glaciers is particularly important for local populations and for understanding the various patterns of climate change in the region. Thus it is important to quantify their evolution
Dehecq, Amaury, Gourmelen, Noel, Trouvé, Emmanuel   +2 more
openaire   +1 more source