Results 71 to 80 of about 401,804 (204)
Basal melt beneath Whillans Ice Stream and Ice Streams A and C, West Antarctica [PDF]
Annals of Glaciology, 2003 AbstractWe have used a recently derived map of the velocity of Whillans Ice Stream and Ice Streams A and C, West Antarctica, to help estimate basal melt. Ice temperature was modeled with a simple vertical advection–diffusion equation,“tuned” to match temperature profiles.
Slawek Tulaczyk +2 more
openaire +2 more sources
Double Reflections in Polarized Radar Data Reveal Ice Fabric in the North East Greenland Ice Stream
Geophysical Research LettersThe orientation of ice crystals within large ice masses has a strong influence on their mechanical properties, but cannot be directly observed from the surface.
Niels F. Nymand +7 more
doaj +1 more source
A viscoelastic model of ice stream flow with application to stick-slip motion
Frontiers in Earth Science, 2016 Stick-slip motion such as that observed at Whillans Ice Stream, WestAntarctica, is one example of transient forcing significantly affecting longer-termice-stream dynamics.
Ryan Thomas Walker +4 more
doaj +1 more source
Quaternary Science Advances, 2021 The last deglaciation, 20,000–10,000 years ago, was a period of global warming and rapidly shrinking ice sheets. It was also climatically unstable and retreats were interrupted by re-advances.
Tine L. Rasmussen, Erik Thomsen
doaj +1 more source
Gulf Stream density structure and transport during the past millennium [PDF]
, 2006 The Gulf Stream transports approximately 31 Sv (1 Sv = 10^6 m^3 s^(-1)) of water and 1.3 10^(15) W of heat into the North Atlantic ocean. The possibility of abrupt changes in Gulf Stream heat transport is one of the key uncertainties in predictions of ...
Curry, William B. +2 more
core +2 more sources
Superimposition of ribbed moraines on a palaeo‐ice‐stream bed: implications for ice stream dynamics and shutdown [PDF]
Earth Surface Processes and Landforms, 2008 AbstractThe sediments and landforms preserved on palaeo‐ice‐stream beds can provide important information about their subglacial conditions and flow mechanisms, and the processes accompanying their shutdown. In this paper, detailed observations of an intriguing subglacial landform assemblage of ribbed moraines superimposed on glacial lineations on the ...
Stokes, C.R. +3 more
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Contrary Responses of the Gulf Stream and the Kuroshio to Arctic Sea Ice Loss
Atmosphere, 2022 The impact on the Gulf Stream and Kuroshio from Arctic sea ice loss is investigated using the Community Climate System Model version 4 (CCSM4) model for their important roles during climate change.
Kun Wang +5 more
doaj +1 more source
Characteristics of the sticky spot of Kamb Ice Stream, West Antarctica [PDF]
, 2017 Amplitude analysis of reflection seismic data reveals the presence of highly variable bed conditions under the main sticky spot and adjacent regions of the Kamb Ice Stream (KIS—formerly ice stream C).
Alley, Richard B. +5 more
core +2 more sources
Quantifying bed roughness beneath contemporary and palaeo-ice streams
Journal of Glaciology, 2018 Bed roughness is an important control on ice-stream location and dynamics. The majority of previous bed roughness studies have been based on data derived from radio-echo sounding (RES) transects across Antarctica and Greenland.
FRANCESCA A.M. FALCINI +3 more
doaj +1 more source
Reviews of Geophysics, 1977 Solar heat is the acknowledged driving force for climatic change. However, ice sheets are also capable of causing climatic change. This property of ice sheets derives from the facts that ice and rock are crystalline whereas the oceans and atmosphere are fluids and that ice sheets are massive enough to depress the earth's crust well below sea level ...
openaire +4 more sources