Sentences with phrase «bed topography»
"Bed topography" refers to the physical shape and features of the ground surface beneath a body of water, such as a river, lake, or ocean. It describes the hills, valleys, and other formations on the floor of the water body. Full definition
«Greenland glaciers» varied vulnerability to melting: More accurate maps of bed topography reveal physical processes controlling retreat.»
sciencedaily.com
«Without bed topography you can not build a decent ice sheet model,» said CReSIS director Prasad Gogineni.
The discovery is the result of an analysis of gravity data from airborne NASA Operation IceBridge missions from 2009 to 2014 combined with ice motion measurements made by researchers at the University of California, Irvine (UCI), UCI's own mass conservation algorithm, and existing bed topography and ice thickness information.
Using data from NASA missions observing Earth, researchers at the University of California, Irvine have created new maps of the bed topography beneath a score of glaciers in southeast Greenland, thereby gaining a much better understanding of why some are undergoing rapid retreat and others are relatively stable.
«In these maps, you can see that there's elevation in the bed topography at the same location as the seismic events,» Lough says.
Therefore, Morlighem said, «By having OMG's measurements close to the ice front, I can tell whether what I thought about the bed topography is correct or not.»
«The bed topography controls how far the retreat is going to be and how fast also depending on the slope,» Morlighem said.
But he noted, «We can't understand how it works if we don't have a good description of the bed topography first.»
«The bed topography is a crucial data set for ice sheet modelers.
Novick, A.N., C.R. Bentley, and N. Lord, Ice thickness, bed topography, and basal reflection coefficients from radar sounding, Upstream B, West Antarctica, Annals of Glaciology, Vol.
Even if possible, it is not desirable to reproduce a natural system in all its inherent complexity — a model is a simplification that allows us to identify and test the sensitivity of a glacier to a range of variables, such as seasonality in mean annual air temperature, precipitation intensity or bed topography.
Further examination of the bed topography by Vaughan and others (2006) indicates that most of the bed of the drainage basin of PIG is more than 500 meters below sea level, and there is a particularly deep basin in the eastern section of the upper basin.