Results 31 to 40 of about 5,146 (301)

Subglacial drainage processes at a High Arctic polythermal valley glacier [PDF]

, 2005
Dye-tracer experiments undertaken over two summer melt seasons at polythermal John Evans Glacier, Ellesmere Island, Canada, were designed to investigate the character of the subglacial drainage system and its evolution over a melt season. In both summers,
Nienow, Peter W., Boon, Sarah, Sharp, Martin J., Boon, S., Bingham, Robert George, Bingham, Robert G.   +5 more
core   +1 more source

Seven-year variation in glacier surface velocity at Narsap Sermia in Southwest Greenland

GIScience & Remote Sensing, 2023
Glacier velocity is a critical factor closely related to ice dynamics of the Greenland ice sheet (GrIS). We present variations of ice velocity using space-based synthetic aperture radar (SAR) observations from July 2013 to September 2020.
Seong-Woo Jung, Sang-Hoon Hong
doaj   +1 more source

Glacier Velocity Monitoring by Maximum Likelihood Texture Tracking [PDF]

IEEE Transactions on Geoscience and Remote Sensing, 2009
The performance of a tracking algorithm considering remotely sensed data strongly depends on a correct statistical description of the data, i.e., its noise model. The objective of this paper is to introduce a new intensity tracking algorithm for synthetic aperture radar (SAR) data, considering its multiplicative speckle/noise model.
Esra Erten, Andreas Reigber, Olaf Hellwich, Pau Prats   +3 more
openaire   +1 more source

Debris cover and surface melt at a temperate maritime alpine glacier: Franz Josef Glacier, New Zealand [PDF]

, 2012
Melt rates on glaciers are strongly influenced by the presence of supraglacial debris, which can either enhance or reduce ablation relative to bare ice.
Brook, Martin S., Winkler, S, Hagg, W, Hagg, Wilfried, Winkler, Stefan, Brook, M. S.   +5 more
core   +1 more source

The dynamics of Trooz Glacier, Antarctic Peninsula, by satellite remote sensing data

Український антарктичний журнал, 2023
The paper studies the ice cover of the Trooz Glacier, Kyiv Peninsula, West Antarctic Peninsula. The main goal of the work is to study the velocity dynamics of various parts of the Trooz Glacier in 2016–2022 based on remote sensing data and to compare ...
S. Kadurin, V. Kadurin
doaj   +1 more source

A physically based calving model applied to marine outlet glaciers and implications for the glacier dynamics [PDF]

, 2010
We present results from numerical ice-flow models that include calving criteria based on penetration of surface and basal crevasses, which in turn is a function of longitudinal strain rates near the glacier front.
Vieli, Andreas, Nick, Faezeh M, van der Veen, C.J., Vieli, A., Benn, Douglas, Benn, Douglas D.I., van der Veen, Cornelis, C.J. Van Der Veen, Benn, Doug I, Nick, Faezeh, Afd Marine and Atmospheric Research, F.M. Nick, Marine and Atmospheric Research, Van der Veen, C J, Benn, Douglas I, A. Vieli, Venn, D. I., van der Veen, C. J., Benn, D.I., Nick, F.M., Nick, F. M., Van der Veen, Cornelis J., D.I. Benn   +22 more
core   +1 more source

Heterogeneity in topographic control on velocities of Western Himalayan glaciers [PDF]

Scientific Reports, 2018
AbstractStudies of the seasonal and annual patterns of glacier velocities improve our understanding of the ice volume, topography, responses to climate change, and surge events of glaciers. Such studies are especially relevant and equally rare for the Himalayan glaciers, which supply many rivers that sustain some of the most heavily populated ...
Lydia Sam, Anshuman Bhardwaj, Rajesh Kumar, Manfred F. Buchroithner, F. Javier Martín-Torres   +4 more
openaire   +4 more sources

InSAR observations of ice elevation and velocity fluctuations at the Flade Isblink ice cap, eastern North Greenland [PDF]

, 2010
The 8500 km(2) Flade Isblink ice cap (FIIC) (81 degrees 15'N, 15 degrees 0'W) is the largest ice cap in Greenland. We use repeat-pass interferometric synthetic aperture radar (InSAR) techniques to investigate the form and flow of the FIIC.
Rinnem, Eero, Nienow, Peter, Peter Nienow, Andrew Shepherd, Palmer, Steven J., Shepherd, Andrew, Eero Rinnem, Aud Sundal, Sundal, Aud, Steven J. Palmer   +9 more
core   +1 more source

Inversion of Glacier 3D Displacement from Sentinel-1 and Landsat 8 Images Based on Variance Component Estimation: A Case Study in Shishapangma Peak, Tibet, China

Remote Sensing, 2022
Offset tracking technology is widely studied to evaluate glacier surface displacements. However, few studies have used a cross-platform to this end. In this study, two heterogeneous data sources, Sentinel-1 and Landsat 8, from January 2019 to January ...
Chengsheng Yang, Chunrui Wei, Huilan Ding, Yunjie Wei, Sainan Zhu, Zufeng Li   +5 more
doaj   +1 more source

MAPPING SURFACE FLOW VELOCITIES OF SIACHEN AND GANGOTRI GLACIERS USING TERRASAR-X AND SENTINEL-1A DATA BY INTENSITY TRACKING [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Glaciers are melting at an alarming rate due to global warming. Two major glaciers of India viz. Gangotri and the Siachen are chosen for the velocity mapping. The line-of-sight (LOS) velocity fields are derived using X-band TerraSAR-X and C-band Sentinel-
P. Lal, D. S. Vaka, Y. S. Rao
doaj   +1 more source