Sentences with phrase «ice velocity»

The new mapping provides complete coastal and inland coverage of ice velocity north of 82.4 ° S with a mean error of < 10 m yr − 1, resulting from multiple overlapping image pairs acquired during the daylight period.

By the late 1980s, the average ice velocity at the front of the shelf was around 20 percent faster than in the preceding decades, the researchers report in a paper to be published in Geophysical Research Letters.

During retreat phase, a tidewater glacier may retreat on the order of 1 - 2 km yr - 1 concurrent with dramatic increases in ice velocity...»

Ice velocity maps of the Ice Stream D and E grounding line area, Antarctica.

To determine how much ice and snowfall enters a specific ice shelf and how much makes it to an iceberg, where it may split off, the research team used a regional climate model for snow accumulation and combined the results with ice velocity data from satellites, ice shelf thickness measurements from NASA's Operation IceBridge — a continuing aerial survey of Earth's poles — and a new map of Antarctica's bedrock.

By the late 1980s, the average ice velocity at the front of the shelf was...

«The positive - feedback mechanism between melt rate and ice velocity appears to be a seasonal process that may have only a limited effect on the response of the ice sheet to climate warming over the next decades,» said the paper.

This is the first map of ice velocity over the entire continent of Antarctica.

«Evaluation of Cryo - Hydrologic Warming as an Explanation for Increased Ice Velocities in the Wet Snow Zone, Sermeq Avannarleq, West Greenland.»

Ice velocity profile across Ice Streams D and E at their grounding line.

Fahnestock, M. A., Scambos, T.A., and Bindschadler, R. A., 1992 Semi-automated ice velocity determination from satellite imagery, Eos, 73, 493.

Eric Rignot compiled masses of InSAR velocity data to present a comprehensive, high resolution map of Antarctic ice velocity.

«Ice velocities near a relict flow feature on Siple Dome,» Antarctic Journal of the United States, XXIX (5), p. 62 - 66.

First, we expect the ice thickness distribution in April 30 from redistribution (divergence / convergence) of sea ice during December and April, based on the daily ice velocity data.

... An Austrian team is developing a similar service, and here at the European Geosciences Union General Assembly this group, known as ENVEO, showcased some of its own ice velocity maps.

The higher ice velocities in the base case CHW simulations are attributable to both decreased basal ice viscosities associated with increased basal ice temperatures and an increase in the extent of basal sliding permitted by temperate bed conditions.

Examination of ice velocity suggests that this internal rifting resulted from the combination of a change in ice shelf stress regime caused by disintegration of the mélange and intensified melting within basal crevasses, both of which may be linked to ocean forcing.

This image combines two Sentinel - 1A radar scans from 3 and 15 January 2015 to show ice velocities on outlet glaciers of Greenland's west coast.

The National Snow and Ice Data Center is pleased to announce the release of a new data set, «Global Land Ice Velocity Extraction from Landsat 8 (GoLIVE)».

This is also consistent with Maslanik and co-workers» analysis of satellite - derived ice velocity fields (Fig. 4).

This suggests that glacial ice acceleration due to changes in seasonal meltwater flux tend to not make a significant overall change in outlet glacier ice velocities.

New research, using ice velocity data from satellites such as ESA's heritage Envisat, has revealed that there is a critical point where these shelves act as a safety band, holding back the ice that flows t...

In equilibrium the vertical ice velocity at the surface would be the same as the net accumulation rate (generally a few tens of centimenters per year), so AGW effects will not have had time to penetrate beyond maybe 10 or twenty meters depth.

«Runoff, Precipitation, mass balance, and ice velocity measurements at South Cascade Glacier, Washington, 1993 balance year».

In August 2011, the first map of ice velocity over the entire continent of Antarctica was created derived from, Envisat ASAR, ALOS PALSAR, Radarsat - 2, ERS - 1 and ERS - 2 satellite radar interferometry overlaid on a MODIS mosaic of Antarctica.

Ice velocity mapping of Ice Streams D, F, and the Shirase Coast: flow dynamics and change.

The large acceleration in ice velocity and ice discharge in Pine Island Glacier from 2002 - 2008 coincided with rapid recession of its grounding line.

The acceleration rate of its ice velocity tripled, melting of its residual ice shelf and thinning of its grounded portion doubled, and calving is now occurring at its grounding line.

For example, if we have a snapshot measurement of the ice velocity, we can infer the value of our basal parameter, i.e. the parameter that represents conditions at the base of the ice.

Actually if you look at ice velocity you will see that outflow through glaciers dominates the outflow of ice sheets.

Tidal motion, ice velocity and melt rate of Petermann Gletscher, Greenland, measured from radar interferometry.

Ice discharge is controlled by three major factors: ice thickness, glacier valley shape and ice velocity.

The study uses reconstructions of ice accumulation, satellite and aircraft readings of ice thickness, and changes in elevation and ice velocity to determine how fast ice shelves melt and compare the mass lost with the amount released by the calving, or splitting, of icebergs.

Meier, M. F., Rasmussen, L. A., Krimmel, R. M., Olsen, R. W. & Frank, D. Photogrammetric determination of surface altitude, terminus position, and ice velocity of Columbia Glacier, Alaska.

It is very interesting, how the concavities in the contours map to the ice velocity.

The GPS (single - frequency) units need to be serviced only once in a year and deliver an ice velocity record with a temporal resolution of 1 day or better.»