Search Results - "Eisen, O"

Limited Retreat of the Wilkes Basin Ice Sheet During the Last Interglacial by Sutter, J., Eisen, O., Werner, M., Grosfeld, K., Kleiner, T., Fischer, H.

“…The response of the East Antarctic Ice Sheet to global warming represents a major source of uncertainty in sea‐level projections. Thinning of the East…”
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Seismic wave propagation in anisotropic ice – Part 1: Elasticity tensor and derived quantities from ice-core properties by Diez, A, Eisen, O

“…A preferred orientation of the anisotropic ice crystals influences the viscosity of the ice bulk and the dynamic behaviour of glaciers and ice sheets…”
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Verification of the multi-layer SNOWPACK model with different water transport schemes by Wever, N, Schmid, L, Heilig, A, Eisen, O, Fierz, C, Lehning, M

“…The widely used detailed SNOWPACK model has undergone constant development over the years. A notable recent extension is the introduction of a Richards…”
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Meltwater produced by wind–albedo interaction stored in an East Antarctic ice shelf by Lenaerts, J. T. M., Lhermitte, S., Drews, R., Ligtenberg, S. R. M., Berger, S., Helm, V., Smeets, C. J. P. P., Broeke, M. R. van den, van de Berg, W. J., van Meijgaard, E., Eijkelboom, M., Eisen, O., Pattyn, F.

“…Surface melt has been tied to the collapse of Antarctic Peninsula ice shelves. This study illustrates that warmer temperatures associated with katabatic winds…”
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Antarctic Sedimentary Basins and Their Influence on Ice‐Sheet Dynamics by Aitken, A. R. A., Li, L., Kulessa, B., Schroeder, D., Jordan, T. A., Whittaker, J. M., Anandakrishnan, S., Dawson, E. J., Wiens, D. A., Eisen, O., Siegert, M. J.

“…Abstract Knowledge of Antarctica's sedimentary basins builds our understanding of the coupled evolution of tectonics, ice, ocean, and climate. Sedimentary…”
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Strong spatial variability of snow accumulation observed with helicopter-borne GPR on two adjacent Alpine glaciers by Machguth, H., Eisen, O., Paul, F., Hoelzle, M.

“…This study compares high‐resolution helicopter‐borne radar measurements to extensive ground‐based profiling of the snow cover on Findel‐ and Adler Glacier,…”
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Seasonal Monitoring of Melt and Accumulation Within the Deep Percolation Zone of the Greenland Ice Sheet and Comparison with Simulations of Regional Climate Modeling by Heilig, Achim, Eisen, Olaf, MacFerrin, Michael, Tedesco, Marco, Fettweis, Xavier

“…Increasing melt over the Greenland Ice Sheet (GrIS) recorded over the past several years has resulted in significant changes of the percolation regime of the…”
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The Subglacial Lake That Wasn't There: Improved Interpretation From Seismic Data Reveals a Sediment Bedform at Isunnguata Sermia by Hofstede, C., Wilhelms, F., Neckel, N., Fritzsche, D., Beyer, S., Hubbard, A., Pettersson, R., Eisen, O.

“…Abstract Radio Echo Sounding (RES) surveys conducted in May 2010 and April 2011 revealed a 2 km 2 flat area with increased bed reflectivity at the base of…”
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Seasonal and diurnal cycles of liquid water in snow-Measurements and modeling by Heilig, A., Mitterer, C., Schmid, L., Wever, N., Schweizer, J., Marshall, H.-P., Eisen, O.

“…Evaluating and improving snow models and outflow predictions for hydrological applications is hindered by the lack of continuous data on bulk volumetric liquid…”
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Seismic wave propagation in anisotropic ice – Part 2: Effects of crystal anisotropy in geophysical data by Diez, A, Eisen, O, Hofstede, C, Lambrecht, A, Mayer, C, Miller, H, Steinhage, D, Binder, T, Weikusat, I

“…We investigate the propagation of seismic waves in anisotropic ice. Two effects are important: (i) sudden changes in crystal orientation fabric (COF) lead to…”
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Permittivity of ice at radio frequencies: Part II. Artificial and natural polycrystalline ice by Bohleber, P., Wagner, N., Eisen, O.

“…Precise knowledge of the absolute value and frequency dependence of the dielectric permittivity of ice is the basis for interpretation of radio echo sounding…”
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Permittivity of ice at radio frequencies: Part I. Coaxial transmission line cell by Bohleber, P., Wagner, N., Eisen, O.

“…At radio-frequencies, measurements of the permittivity of ice are sparse and with unknown or large uncertainty. Coaxial transmission lines have been…”
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Physical Conditions of Fast Glacier Flow: 2. Variable Extent of Anisotropic Ice and Soft Basal Sediment From Seismic Reflection Data Acquired on Store Glacier, West Greenland by Hofstede, C., Christoffersen, P., Hubbard, B., Doyle, S. H., Young, T. J., Diez, A., Eisen, O., Hubbard, A.

“…Outlet glaciers of the Greenland Ice Sheet transport ice from the interior to the ocean and contribute directly to sea level rise because discharge and…”
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Layer disturbances and the radio-echo free zone in ice sheets by Drews, R., Eisen, O., Weikusat, I., Kipfstuhl, S., Lambrecht, A., Steinhage, D., Wilhelms, F., Miller, H.

“…Radio-echo sounding of the Antarctic and Greenlandic ice sheets often reveals a layer in the lowest hundreds of meters above bedrock more or less free of radio…”
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Direct evidence for continuous radar reflector originating from changes in crystal-orientation fabric by Eisen, O., Hamann, I., Kipfstuhl, S., Steinhage, D., Wilhelms, F.

“…The origin of a strong continuous radar reflector observed with airborne radio-echo sounding (RES) at the EPICA deep-drilling site in Dronning Maud Land,…”
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Influence of tides on sea ice in the Weddell Sea: Investigations with a high-resolution dynamic-thermodynamic sea ice model by Koentopp, M., Eisen, O., Kottmeier, C., Padman, L., Lemke, P.

“…The effects of tides on the seasonal fluctuations and regional differences of the sea ice cover in the Weddell Sea are investigated using a…”
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On the importance of leads in sea ice to the energy balance and ice formation in the Weddell Sea by Eisen, O., Kottmeier, C.

“…For a considerable coverage the energy balance of and ice formation by leads in sea ice in the Weddell Sea are evaluated on the basis of data obtained from…”
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Sea ice growth in the eastern Weddell Sea in winter by Kottmeier, C., Frey, K., Hasel, M., Eisen, O.

“…The energy budget and the formation of sea ice in the eastern Weddell Sea west of Maud Rise are investigated on a regional scale on the basis of data obtained…”
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Processing and Analysis of Radar Data to Map Layers Near the Bed to Determine Optimum Ice Core Site by Knerr, N., Taylor, D., Gogineni, S., Lilien, D., Steinhage, D., Dahl-Jensen, D., Miller, H., Eisen, O.

“…We developed a very high sensitivity ultra-wideband radar operating at 200 MHz and optimized signal processor to map internal layers close to the bed. We used…”
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Investigating the internal structure of the Antarctic ice sheet: the utility of isochrones for spatiotemporal ice-sheet model calibration by Sutter, Johannes, Fischer, Hubertus, Eisen, Olaf

“…Ice-sheet models are a powerful tool to project the evolution of the Greenland and Antarctic ice sheets and thus their future contribution to global sea-level…”
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