Results 51 to 60 of about 63,457 (214)

Glacier Flow and the Growth of the Glacier Grain [PDF]

Journal of Glaciology, 1947
The crystallographic results of the Jungfraujoch Research Party’s investigations were published in the Proceedings of the Royal Society in August 1939. It has since occurred to me that insufficient attention was drawn to another factor affecting the movement and growth of the glacier grain, namely the possibility of pressure melting, followed by ...
openaire   +1 more source

Glacial lakes control ice flow: new insights from satellite SAR PO-SBAS observations in Duiya Glacier, southern Tibetan Plateau

International Journal of Digital Earth
This study investigates the effects of glacial lakes on the flow velocities of Duiya Glacier, southern Tibetan Plateau, by employing satellite Synthetic Aperture Radar (SAR) Pixel-Offset-Tracking Small-Baseline-Subset (PO-SBAS) technology. Duiya Glacier,
Yueling Shi, Tao Che, Jiawen Bao, Xiaowen Wang, Guoxiang Liu, Qiang Bie, Yi He, Renzhe Wu, Dongdong Feng   +8 more
doaj   +1 more source

Discovery of the Fastest Ice Flow along the Central Flow Line of Austre Lovénbreen, a Poly-thermal Valley Glacier in Svalbard

Remote Sensing, 2019
Ice flow velocity is a sensitive indicator of glacier variations both controlling and representing the delivery of ice and affecting the future stability of ice masses in a warming climate.
Songtao Ai, Xi Ding, Jiachun An, Guobiao Lin, Zemin Wang, Ming Yan   +5 more
doaj   +1 more source

Multi-decadal basal slip enhancement at Saskatchewan Glacier, Canadian Rocky Mountains

Journal of Glaciology, 2023
Glacier motion responds dynamically to changing meltwater inputs, but the multi-decadal response of basal sliding to climate remains poorly constrained due to its sensitivity across multiple timescales.
Nathan T. Stevens, Collin J. Roland, Lucas K. Zoet, Richard B. Alley, Dougal D. Hansen, Emily Schwans   +5 more
doaj   +1 more source

The flow of a polythermal glacier: McCall Glacier, Alaska, U.S.A. [PDF]

Journal of Glaciology, 1997
AbstractWe have analyzed the flow of polythermal McCall Glacier in Arctic Alaska. Using measurements of surface velocity from the 1970s and 1990s, together with measurements of ice thickness and surface slope, we have investigated both the present flow and seasonal and long-term flow variations.
B.T. Rabus, K. A. Echelmeyer
openaire   +1 more source

Origin and dynamic significance of longitudinal structures ("flow stripes") in the Antarctic Ice Sheet [PDF]

Earth Surface Dynamics, 2015
Longitudinal ice-surface structures in the Antarctic Ice Sheet can be traced continuously down-ice for distances of up to 1200 km. A map of the distribution of ~ 3600 of these features, compiled from satellite images, shows that they mirror the location ...
N. F. Glasser, S. J. A. Jennings, M. J. Hambrey, B. Hubbard   +3 more
doaj   +1 more source

OPTICAL FLOW FOR GLACIER MOTION ESTIMATION [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Abstract. Quantitative measurements of glacier flow over time are an important ingredient for glaciological research, for example to determine the mass balances and the evolution of glaciers. Measuring glacier flow in multi-temporal images involves the estimation of a dense set of corresponding points, which in turn define the flow vectors. Furthermore
C. Vogel, A. Bauder, K. Schindler
openaire   +3 more sources

Scenario Simulation of Glacier Collapse in the Amnye Machen Mountains, Qinghai–Tibetan Plateau

Geosciences
Simulating potential glacier collapses can provide crucial support for local disaster prevention and mitigation efforts. The Xiaomagou Glacier in the Amnye Machen Mountains, Qinghai–Tibetan Plateau, has experienced five collapses in the past two decades.
Jia Li, Junhui Wu, Xuyan Ma, Dongwei Zhou, Long Li, Le Lv, Lei Guo, Lingshuai Kong, Jiahao Dian   +8 more
doaj   +1 more source

Modelling spatial patterns of near-surface air temperature over a decade of melt seasons on McCall Glacier, Alaska

Journal of Glaciology, 2020
We examine the spatial patterns of near-surface air temperature (Ta) over a melting glacier using a multi-annual dataset from McCall Glacier, Alaska. The dataset consists of a 10-year (2005–2014) meteorological record along the glacier centreline up to ...
Patrick Troxler, Álvaro Ayala, Thomas E. Shaw, Matt Nolan, Ben W. Brock, Francesca Pellicciotti   +5 more
doaj   +1 more source

Tracking icebergs with time-lapse photography and sparse optical flow, LeConte Bay, Alaska, 2016–2017 [PDF]

, 2019
We present a workflow to track icebergs in proglacial fjords using oblique time-lapse photos and the Lucas-Kanade optical flow algorithm. We employ the workflow at LeConte Bay, Alaska, where we ran five time-lapse cameras between April 2016 and ...
Amundson, Jason M., Dryer, William P., Jackson, Rebecca H., Kienholz, Christian, Mickett, John B., Motyka, Roman J., Nash, Jonathan D., Sutherland, David A., Truffer, Martin, Winters, Dylan S.   +9 more
core   +2 more sources