Results 41 to 50 of about 26,322 (306)

Improved records of glacier flow instabilities using customized NASA autoRIFT (CautoRIFT) applied to PlanetScope imagery [PDF]

The Cryosphere
En masse application of feature tracking algorithms to satellite image pairs has produced records of glacier surface velocities with global coverage, revolutionizing the understanding of global glacier change.
J. Liu, M. Gendreau, E. M. Enderlin, R. Aberle   +3 more
doaj   +1 more source

Ice-marginal lake hydrology and the seasonal dynamical evolution of Kennicott Glacier, Alaska

Journal of Glaciology, 2020
Glacier basal motion is responsible for the majority of ice flux on fast-flowing glaciers, enables rapid changes in glacier motion and provides the means by which glaciers shape alpine landscapes. In an effort to enhance our understanding of basal motion,
William H. Armstrong, Robert S. Anderson
doaj   +1 more source

Hydraulic and mechanical properties of glacial sediments beneath Unteraargletscher, Switzerland: implications for glacier basal motion [PDF]

, 2001
The force on a ‘ploughmeter’ and subglacial water pressure have been measured in the same borehole at Unteraargletscher, Switzerland, in order to investigate ice–sediment coupling and the motion at the base of a soft-bedded glacier.
Agassiz, Agassiz, Alley, Alley, Alley, Bear, Blake, Blankenship, Boulton, Brown, Campanella, Carslaw, Engelhardt, Engelhardt, Engelhardt, Fischer, Fischer, Fischer, Fischer, Fischer, Flotron, Freeze, Funk, Funk, Gudmundsson, Gudmundsson, Gudmundsson, Gudmundsson, Head, Hooke, Hugi, Hugi, Humphrey, Iken, Iken, Iverson, Iverson, Iverson, Iverson, Iverson, Janbu, Kamb, Knecht, Lambe, Malyshev, Mitchell, Murray, Murray, Porter, Porter, Press, Ruiter, Röthlisberger, Senneset, Skempton, Truffer, Tulaczyk, Weertman   +57 more
core   +1 more source

Diurnal fluctuations of glacier surface velocity observed with terrestrial radar interferometry at Laohugou No. 12 Glacier, western Qilian mountains, China

Journal of Glaciology, 2019
Measurements of short-interval variations in glacier surface velocity, which contribute to our understanding of ice motion mechanisms, remain scarce on the Tibetan Plateau.
LIN LIU, LIMING JIANG, YONGLING SUN, HANSHENG WANG, YAFEI SUN, HOUZE XU   +5 more
doaj   +1 more source

Reconstruction of Petermann glacier velocity time series using multi-source remote sensing images

International Journal of Applied Earth Observations and Geoinformation
Glacier velocity is one of the crucial parameters in the research of glacier dynamics. Synthetic aperture radar (SAR), as an active microwave sensor, represents a common method to monitor glacier velocity.
Zongze Li, Jinsong Chong, Yawei Zhao, Lijie Diao   +3 more
doaj   +1 more source

Spatial-Temporal Characteristics of Glacier Velocity in the Central Karakoram Revealed with 1999–2003 Landsat-7 ETM+ Pan Images

Remote Sensing, 2017
The situation of stable and slightly advancing glaciers in the Karakoram is called the “Karakoram anomaly”. Glacier surface velocity is one of the key parameters of glacier dynamics and mass balance, however, the response of glacier motion to this ...
Yongling Sun, Liming Jiang, Lin Liu, Yafei Sun, Hansheng Wang   +4 more
doaj   +1 more source

The Sliding Velocity of Athabasca Glacier, Canada [PDF]

Journal of Glaciology, 1970
AbstractA method of estimating siding velocity is presented. It rests on few assumptions, one of which is that longitudinal strain-rate varies linearly with depth. The flow law of ice is not used. To apply it, the sliding velocity at one point must be known.
openaire   +1 more source

Alps glacier velocities 2013-2015 (Landsat 8)

, 2019
This dataset contains the median glacier surface velocity for the Alps for the years 1999-2003 (Landsat 7 SLC-ON only). The velocities has been obtained by feature-tracking of Landsat images spaced 1 year apart. The folder contains the following fields at 30 m resolution in GeoTiff format: - the velocity magnitude 'vel' (meters per year) - the x/y ...
Amaury, Dehecq, Noel, Gourmelen, Emmanuel, Trouvé, Matthias, Jauvin, Antoine, Rabatel   +4 more
openaire   +2 more sources

Icequakes and Large Shear Wave Velocity Drop in the Kuoqionggangri Glacier of Tibetan Plateau Observed with Fiber Optic Seismometer Array

Remote Sensing, 2023
We developed a kind of fiber optic seismometer array for a high mountain glacier and first tested it on the Kuoqionggangri Glacier in the Tibetan Plateau.
Yanan Li, Wenzhu Huang, Guohui Li, Wei Yang, Xiaolong Zhang, Jiule Li, Wentao Zhang, Baiqing Xu   +7 more
doaj   +1 more source

Radioglaciological studies on Hurd Peninsula glaciers, Livingston Island, Antarctica [PDF]

, 2009
We present the results of several radio-echo sounding surveys carried out on Johnsons and Hurd Glaciers, Livingston Island, Antarctica, between the 1999/2000 and 2004/05 austral summer campaigns, which included both radar profiling and common-midpoint ...
Ahlstrom, L.P., Lapazaran Izargain, Javier Jesús, Macheret, Yu, Machío, F., Navarro Valero, Francisco Jose, Otero García, Jaime, Vasilenko, Evgeniy   +6 more
core   +2 more sources