Sentences with phrase «estimate ice flow»

Not exact matches

The deep grooves under the massive ice sheet could facilitate flow into the ocean, which suggests sea level rise estimates for this century need to be revised upwards

«Modelers need an estimate of the heat flow, and they need to know something about the geological conditions at the bottom of the ice sheet in order to estimate drag.

Without the ice sheet that is now weighing down Greenland's terrain, a river in the canyon would, on average, drop about 30 centimeters for every kilometer it flowed seaward, the team estimates.

USGS estimates that Alaska's glaciers and ice fields are responsible for nearly 50 percent of the water that flows into the Gulf of Alaska.

Combining the speed and thickness measurements allowed the scientists to determine how much ice was flowing into the ocean, while the climate model allowed them to estimate how much snow was falling on the ice sheet.

One 2004 NASA - led study found that most of the glaciers they were studying «flow into floating ice shelves over bedrock up to hundreds of meters deeper than previous estimates, providing exit routes for ice from further inland if ice - sheet collapse is under way.»

Based on a model that excludes ice sheet flow due to a lack of basis in published literature, it is estimated that sea level rise will be, in a low scenario, 18 to 38 cm (7 to 15 inches) and in a high scenario, 26 to 59 cm (10 to 23 inches).

SALSA will gather data from permanent GPS stations to better understand subglacial water flow's influence on the larger ice sheet system and improve subglacial lake modeling through comparing our model's estimates against geochemical data.

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.

Outflow from the ice - dammed lake is estimated to have been 11.3 million cubic meters; the additional 17.5 million cubic meters is due to frictional melting of ice as the flood traveled in contact with the glacier, together with an input from base flow.»

«A conservative estimate is it could take several centuries for all of the ice to flow into the sea.»

Even worse: to numbers with error estimates, it adds a number without proper error estimate (the observational uncertainty for 1993 - 2003 is included, but who would claim this is an error estimation for future ice flow changes?).

The German delegation in Paris (of which I was a member) therefore suggested taking this ice - flow estimate out of the tabulated range.

Via various isotope analyses and flow models, Jasechko (2017) estimated that between 42 - 85 % of all groundwater stored in the upper 1 kilometer of the earth's crust is water that had infiltrated the ground more than 11,000 years ago, during last Ice Age.

Advances in glacier ice flow mapping using repeat satellite images, and later using interferometric synthetic aperture radar SAR methods, facilitated the mass budget approach, although this still requires an estimate of snow input and a cross-section of the glacier as it flows out from the continent and becomes floating ice.

Based on GRACE satellite gravity estimates (illustrated in the graph below on the left) and hydrographic measurements (graph on right), Greenland's lost ice has correlated best with the pulses of warm Atlantic water that entered into the Irminger Current that flows to the west around Greenland, delivering relatively warm water to the base of Greenland's marine terminating glaciers.

We map present - day Antarctic - wide surface velocities using Landsat 7 and 8 imagery spanning 2013 — 2015 and compare to earlier estimates derived from synthetic aperture radar, revealing heterogeneous changes in ice flow since ∼ 2008.

We take this as an estimate of the part of the present ice sheet mass imbalance that is due to recent ice flow acceleration (Section 4.6.3.2), and assume that this contribution will persist unchanged.