Sentences with phrase «own ice velocity»
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.
https://www.sciencenews.org/
By the late 1980s, the average ice velocity at the front of the shelf was...
Ice velocity maps of the Ice Stream D and E grounding line area, Antarctica.
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.
Ice velocity profile across Ice Streams D and E at their grounding line.
Ice velocity mapping of Ice Streams D, F, and the Shirase Coast: flow dynamics and change.
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.
The large acceleration in ice velocity and ice discharge in Pine Island Glacier from 2002 - 2008 coincided with rapid recession of its grounding line.
... 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.
During retreat phase, a tidewater glacier may retreat on the order of 1 - 2 km yr - 1 concurrent with dramatic increases in ice velocity...»
Actually if you look at ice velocity you will see that outflow through glaciers dominates the outflow of ice sheets.
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.
Tidal motion, ice velocity and melt rate of Petermann Gletscher, Greenland, measured from radar interferometry.
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.
«Runoff, Precipitation, mass balance, and ice velocity measurements at South Cascade Glacier, Washington, 1993 balance year».
Ice discharge is controlled by three major factors: ice thickness, glacier valley shape and ice velocity.
This is the first map of ice velocity over the entire continent of Antarctica.
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.
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.
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.
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...
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.»
As a reviewer of the Greenland paper in question, the key item is that «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.»
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.
Not exact matches
The authors, therefore, demonstrate how the presence of ice, exposed on the ground or in the collapsing slope, could affect the shape and velocity of these landslides.
Sometimes a moving ice sheet gets blocked by a mountain where high velocity winds ablate the surface, eventually exposing the meteorites.
The researchers used a range of data of other ice sheet dynamics, like snowfall and surface velocity of ice, to create a more detailed overview of Greenland's topography.
Surface velocity field of northern Larsen Ice Shelf, Antarctica, Annals of Glaciology, Vol.
Velocity pattern in a transect across ice stream B, Antarctica.
Satellite - image - derived velocity field of an Antarctic ice stream, Science, Vol.
New and improved determinations of velocity of ice streams B and C, West Antarctica.
«Geodetic measurements of vertical crustal velocity in West Antarctica and the implications for ice mass balance.»
Surface Velocity and Strain Rates at the Onset of Ice Stream D, West Antarctica, Antarctic Journal of the U.S., 1997 Review.
Surface velocity fields of Ice Stream D and E, West Antarctica, Eos, 73, 182.
Preliminary Determination of Ice Flow Velocity in West Antarctica Using High Precision GPS Measurements, ION - 96 Proceedings, Kansas City, Missouri, September 17 - 20, 1996, 1853 - 1861.
Velocity measurements for the Prestrud and Sulzberger Ice Shelves, West Antarctica.
Lucchitta, B.K., Mullins, K.F., Smith, C.E., and Ferrigno, J.G., 1994, Velocities of the Smith Glacier Ice Tongue and Dotson Ice Shelf, Walgreen Coast, Marie Byrd Land, West Antarctica: Annals of Glaciology, v. 20, p. 101 - 109.
«At the start of this study there was as single map of [Antarctic] ice sheet velocity, and now we're in a position where we can generate these at least every year,» lead study author Alex Gardner of NASA's Jet Propulsion Laboratory told Earther.
Also on stage that evening will be Jessi Combs and Bogi Lateiner from Velocity's «All Girl Garage,» Alex Debogorski from «Ice Road Truckers,» Lou Santiago and Jared Zimmerman from «Velocity's Car Fix» and Dan Short from Velocity's «Fantomworks.»
We spent some time with the Cruz T510 and T507, two forthcoming Ice Cream Sandwich tablets from Velocity Micro.
Leakage of the Greenland Ice Sheet through accelerated ice flow AU: * Rignot, E AF: Jet Propulsion Laboratory / Caltech, MS 300-319 4800 Oak Grove Drive, Pasadena, ca 91109 - 8099 United States AB: A map of coastal velocities of the Greenland ice sheet was produced from Radarsat - 1 acquired during the background mission of 2000 and combined with radio echo sounding data to estimate the ice discharge from the ice sheIce Sheet through accelerated ice flow AU: * Rignot, E AF: Jet Propulsion Laboratory / Caltech, MS 300-319 4800 Oak Grove Drive, Pasadena, ca 91109 - 8099 United States AB: A map of coastal velocities of the Greenland ice sheet was produced from Radarsat - 1 acquired during the background mission of 2000 and combined with radio echo sounding data to estimate the ice discharge from the ice sheice flow AU: * Rignot, E AF: Jet Propulsion Laboratory / Caltech, MS 300-319 4800 Oak Grove Drive, Pasadena, ca 91109 - 8099 United States AB: A map of coastal velocities of the Greenland ice sheet was produced from Radarsat - 1 acquired during the background mission of 2000 and combined with radio echo sounding data to estimate the ice discharge from the ice sheice sheet was produced from Radarsat - 1 acquired during the background mission of 2000 and combined with radio echo sounding data to estimate the ice discharge from the ice sheice discharge from the ice sheice sheet.
The current flow speeds at the terminus are too fast to be caused solely by internal deformation of the ice, implying that an increase in basal sliding forced by additional meltwater production is the probable cause of the velocity increases.
The no CHW and surface CHW simulations significantly underestimate observed ice surface velocities in both epochs.
The two papers don't mention any velocity changes due to increased slope, but they do record that at elevations above 1500 - 2000 m, the ice has been growing in thickness by about 5 - 6 cm / yr, whereas below the 1500m level there's been a thinning of about -2 cm / yr.
From the Abstract: Ice shelf velocity is 15 - 30 % larger than pre 2010 extimates.They see 5Gton / yr basal melt, 1 GTon / yr surface melt + sublimation, and 4GTon / yr from ice shelf thinniIce shelf velocity is 15 - 30 % larger than pre 2010 extimates.They see 5Gton / yr basal melt, 1 GTon / yr surface melt + sublimation, and 4GTon / yr from ice shelf thinniice shelf thinning.