Assessing a multilayered dynamic firn-compaction model for Greenland with ASIRAS radar measurements
نویسندگان
چکیده
منابع مشابه
Antarctic firn compaction rates from repeat-track airborne radar data: I. Methods
While measurements of ice-sheet surface elevation change are increasingly used to assess mass change, the processes that control the elevation fluctuations not related to ice-flow dynamics (e.g. firn compaction and accumulation) remain difficult to measure. Here we use radar data from the Thwaites Glacier (West Antarctica) catchment to measure the rate of thickness change between horizons of co...
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We performed detailed H isotope diffusion measurements in the upper 3 m of firn at Summit, Greenland. Using a small snow gun, a thin snow layer was formed from H-enriched water over a 6× 6 m area. We followed the diffusion process, quantified as the increase of the δH diffusion length, over a 4-year period, by retrieving the layer once per year by drilling a firn core and slicing it into 1 cm l...
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1 Department of Geology and Geophysics, University of Utah, Salt Lake City, UT, United States, 2 Geography Department, University of Utah, Salt Lake City, UT, United States, 3 National Snow and Ice Data Center, University of Colorado Boulder, Boulder, CO, United States, 4 Department of Geology, University of Maryland, College Park, College Park, MD, United States, 5 Institute for Marine and Atm...
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Air was sampled from the porous firn layer at the NEEM site in Northern Greenland. We use an ensemble of ten reference tracers of known atmospheric history to characterise the transport properties of the site. By analysing uncertainties in both data and the reference gas atmospheric histories, we can objectively assign weights to each of the gases used for the depth-diffusivity reconstruction. ...
متن کاملNumerical study of soil dynamic compaction using ABAQUS model
One of the most important methods of soil compaction is dynamic compaction, which is one of the oldest and economical methods of soil improvement up to great depths. This method is applied due to its many benefits, including its economic procedure to correct many kinds of soil. One of the most important issues that affect soil improvement methods is being economic. The three main method...
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ژورنال
عنوان ژورنال: Journal of Glaciology
سال: 2013
ISSN: 0022-1430,1727-5652
DOI: 10.3189/2013jog12j158