Results 41 to 50 of about 26,404 (300)
Mechanical and hydrologic basis for the rapid motion of a large tidewater glacier: 1. Observations [PDF]
, 1994 Measurements of glacier flow velocity and basal water pressure at two sites on Columbia Glacier, Alaska, are combined with meteorological and hydrologic data to provide an observational basis for assessing the role of water storage and basal water ...
Dunlap, William W. +9 more
core +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.
Erten, Esra +3 more
openaire +2 more sources
Improved records of glacier flow instabilities using customized NASA autoRIFT (CautoRIFT) applied to PlanetScope imagery [PDF]
The CryosphereEn 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 +3 more
doaj +1 more source
International Journal of Digital Earth, 2023 The anomalous movements of glaciers cause disasters, such as debris flows and landslides. It is very important to assess the glacier movements and their future trends. Glacier velocity refers to movement process. The current research aims to analyse past
Yali Zhang +6 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 GeoinformationGlacier 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 +3 more
doaj +1 more source
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 +5 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
Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress [PDF]
, 2009 Peer ...
Bingham, R G +5 more
core +5 more sources
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 +4 more
openaire +2 more sources