Results 61 to 70 of about 6,390,963 (305)

Surface velocities and calving flux of the Academy of Sciences Ice Cap, Severnaya Zemlya

Лëд и снег, 2020
We have determined the ice-surface velocities of the Academy of Sciences Ice Cap, Severnaya Zemlya, Russian Arctic, during the period November 2016 – November 2017, using intensity offset-tracking of Sentinel-1 synthetic-aperture radar images. We used the average of 54 pairs of weekly velocities (with both images in each pair separated by a12-day ...
P. Sánchez-Gámez, F. J. Navarro, J. A. Dowdeswell, E. De Andrés   +3 more
openaire   +3 more sources

Simulating ice thickness and velocity evolution of Upernavik Isstrøm 1849–2012 by forcing prescribed terminus positions in ISSM [PDF]

The Cryosphere, 2018
Tidewater glacier velocity and mass balance are known to be highly responsive to terminus position change. Yet it remains challenging for ice flow models to reproduce observed ice margin changes. Here, using the Ice Sheet System Model (ISSM; Larour et 
K. Haubner, K. Haubner, J. E. Box, N. J. Schlegel, E. Y. Larour, M. Morlighem, A. M. Solgaard, K. K. Kjeldsen, K. K. Kjeldsen, K. K. Kjeldsen, S. H. Larsen, S. H. Larsen, E. Rignot, E. Rignot, T. K. Dupont, K. H. Kjær   +15 more
doaj   +1 more source

Glacier-Surface Velocity Derived Ice Volume and Retreat Assessment in the Dhauliganga Basin, Central Himalaya – A Remote Sensing and Modeling Based Approach

Frontiers in Earth Science, 2019
Himalayan glaciers are a storehouse of fresh water and play a significant role in influencing the runoff through numerous perennial rivers flowing over the Indo-Gangetic plains, providing freshwater to the second largest populated country in the world ...
A. Sattar, Ajanta Goswami, A. Kulkarni, Pritam Das   +3 more
semanticscholar   +1 more source

Potential subglacial lake locations and meltwater drainage pathways beneath the Antarctic and Greenland ice sheets [PDF]

, 2013
We use the Shreve hydraulic potential equation as a simplified approach to investigate potential subglacial lake locations and meltwater drainage pathways beneath the Antarctic and Greenland ice sheets. We validate the method by demonstrating its ability
Clark, Chris, Woodward, J., Livingstone, Stephen, Woodward, John, Clark, C.D., Kingslake, J., Livingstone, S.J., Livingstone, S. J., Clark, C. D., J. Kingslake, Kingslake, Jonathan, C. D. Clark, S. J. Livingstone, J. Woodward   +13 more
core   +2 more sources

Changes in ice-shelf buttressing following the collapse of Larsen A Ice Shelf, Antarctica, and the resulting impact on tributaries

Journal of Glaciology, 2016
The dominant mass-loss process on the Antarctic Peninsula has been ice-shelf collapse, including the Larsen A Ice Shelf in early 1995. Following this collapse, there was rapid speed up and thinning of its tributary glaciers.
SAM ROYSTON, G. HILMAR GUDMUNDSSON
doaj   +1 more source

The Dependence of Temperature Profiles in Ice Sheets on Longitudinal Variations in Velocity and Surface Temperature [PDF]

Journal of Glaciology, 1978
Abstract Formulae for calculating temperature profiles in steady-state ice sheets are derived in terms of the horizontal and vertical velocities of the surface ice, and of the variation in surface temperature along the flow lines. Two models are considered: parallel flow and radial flow.
openaire   +1 more source

Surface Mass-Balance Gradients From Elevation and Ice Flux Data in the Columbia Basin, Canada

Frontiers in Earth Science, 2021
The mass-balance—elevation relation for a given glacier is required for many numerical models of ice flow. Direct measurements of this relation using remotely-sensed methods are complicated by ice dynamics, so observations are currently limited to ...
Ben M. Pelto, Ben M. Pelto, Brian Menounos   +2 more
doaj   +1 more source

Glacier Surface Velocity Retrieval Using D-InSAR and Offset Tracking Techniques Applied to Ascending and Descending Passes of Sentinel-1 Data for Southern Ellesmere Ice Caps, Canadian Arctic

Remote Sensing, 2017
The Terrain Observation by Progressive Scans (TOPS) acquisition mode of the Sentinel-1 mission provides a wide coverage per acquisition with resolutions of 5 m in range and 20 m in azimuth, which makes this acquisition mode attractive for glacier ...
P. Sánchez-Gámez, F. Navarro
semanticscholar   +1 more source

Space geodesy as a tool for measuring ice surface velocity in the Dome C region and along the ITASE traverse [PDF]

Annals of Glaciology, 2004
AbstractDome C was chosen by the European Project for Ice Coring in Antarctica (EPICA) as the site for the drilling of a deep ice core. This paper presents results from geodetic surveys of ice velocities (absolute and relative) at Dome C and along a transect to Terra Nova Bay. The purpose of the surveys was to provide accurate data for the study of ice
VITTUARI, LUCA, C. Vincent, M. Frezzotti, F. Mancini, GANDOLFI, STEFANO, BITELLI, GABRIELE, A. Capra   +6 more
openaire   +4 more sources

SPHINX31 acts as a SRPK1 inhibitor targeting the ATR/DNA‐PKcs/CHK1 replicative checkpoint to inhibit cell growth in non‐small cell lung cancer

Molecular Oncology, EarlyView.
The kinase SRPK1 directly interacts with the protein TOPBP1 and regulates the pre‐mRNA splicing of WIZ thereby contributing to the activation of the ATR/CHK1 replicative checkpoint in response to replicative stress. This allows cancer cells' genomic stability and survival.
Amani Shreim, Aurelie Genoux, Nadiia Zubchuk, Haoyang Zheng, Perla Salameh, Theo Ziegelmeyer, Fabien Dalonneau, Margot Rouchette, Christiane Oddou, Simona Miron, Helene Polveche, Adiilah Mamode Cassim, Carmen Garrido, Eleni Nikolakaki, Didier Auboeuf, Tao Jia, Sophie Zinn‐Justin, Beatrice Eymin   +17 more
wiley   +1 more source