Browsing by Author "Geiger, Cathleen A."

Sort by: Order: Results:

  • Bernstein, E. Rachel; Geiger, Cathleen A.; DeLiberty, Tracy L.; Lemcke-Stampone, Mary D. (International Glaciological Society, 2015-10-01)
    This work evaluates two distinct calculations of central tendency for sea-ice thickness and quantifies the impact such calculations have on ice volume for the Southern Ocean. The first calculation, area-weighted average ...
  • Drinkwater, M. R.; Geiger, Cathleen A. (American Geophysical Union, 2005)
    We examine sea ice kinematics relevant to surface fluxes using ERS-1 synthetic aperture radar (SAR) images coincident with buoys in the western Weddell Sea in austral autumn of 1992. Careful matching of temporal and spatial ...
  • Samluk, Jesse P.; Geiger, Cathleen A.; Weiss, Chester J. (International Glaciological Society, 2015-10-01)
    In this paper we explore simulated responses of electromagnetic (EM) signals relative to in situ field surveys and quantify the effects that different values of conductivity in sea ice have on the EM fields. We compute ...
  • Geiger, Cathleen A.; Müller, Hans-Reinhard; Samluk, Jesse P.; Bernstein, E. Rachel; Richter-Menge, Jacqueline A. (International Glaciological Society, 2015-10-01)
    We explore spatial aliasing of non-Gaussian distributions of sea-ice thickness. Using a heuristic model and >1000 measurements, we show how different instrument footprint sizes and shapes can cluster thickness distributions ...
  • Geiger, Cathleen A.; Zhao, Y. H.; Liu, A. K.; Hakkinen, S. (American Geophysical Union, 2000)
    A method for comparing sea ice velocity, divergence, and shear at the large-scale between buoys and Special Sensor Micro wave Imager (SSM/I) is presented. For initial testing, the method is applied in the Eurasian Basin ...
  • Geiger, Cathleen A.; Hibler, W. D., III; Ackley, Stephen F. (American Geophysical Union, 1998)
    Statistical comparisons between numerical sea ice models and an observed large-scale strain array in the western Weddell Sea during 1992 are used to evaluate the performance of three of the more generally utilized sea ice ...
  • Geiger, Cathleen A.; Wadhams, Peter; Müller, Hans-Reinhard; Richter-Menge, Jacqueline A.; Samluk, Jesse P.; DeLiberty, Tracy L.; Corradina, Victoria (International Glaciological Society, 2015-10-01)
    During late winter 2007, coincident measurements of sea ice were collected using various sensors at an ice camp in the Beaufort Sea, Canadian Arctic. Analysis of the archived data provides new insight into sea-ice isostasy ...
  • Geiger, Cathleen A.; Wadhams, Peter; Skourup, H.; Doble, M. J. (American Geophysical Union, 2011)
    Data are presented from a survey by airborne scanning laser profilometer and an AUV-mounted, upward looking swath sonar in the spring Beaufort Sea. The air-snow (surface elevation) and water-ice (draft) surfaces were mapped ...
  • Ackley, Stephen F.; Geiger, Cathleen A.; King, J. C. (John Christopher), 1955-; Hunke, E. C.; Comiso, J. (International Glaciological Society, 2001)
    The Ronne polynya formed in the Weddell Sea, Antarctica, during the period November 1997-February 1998 to an extent not seen previously in the 25 years of all-weather satellite observations. The vessel HMS Endurance traversed ...
  • Hakkinen, S.; Geiger, Cathleen A. (American Geophysical Union, 2000)
    The variability of the Arctic circulation is investigated for a 43 year period (1951-1993) from a coupled ice-ocean model. Empirical orthogonal function (EOF) analysis shows that the variability of the sea surface height ...
  • Hutchings, J. K.; Roberts, A.; Geiger, Cathleen A.; Richter-Menge, Jacqueline A. (International Glaciological Society, 2011)
    In late March 2007 an array of GPS ice drifters was deployed in the Beaufort Sea as part of the Sea Ice Experiment: Dynamic Nature of the Arctic (SEDNA). The drifters were deployed in an array designed to resolve four, ...
  • Worby, A. P. (Anthony P.); Geiger, Cathleen A.; Paget, M. J.; Van Woert, Michael L.; Ackley, Stephen F.; DeLiberty, Tracy L. (American Geophysical Union, 2008)
    Ship-based observations are used to describe regional and seasonal changes in the thickness distribution and characteristics of sea ice and snow cover thickness around Antarctica. The data set comprises 23,373 observations ...
  • Geiger, Cathleen A.; Ackley, Stephen F.; Hibler, W. D., III (International Glaciology Society, 1997)
    Using a dynamic-thermodynamic numerical sea-ice model, external oceanic and atmospheric forcings on sea ice in the Weddell Sea are examined to identify physical processes associated with the seasonal cycle of pack ice, and ...

Search UDSpace

Browse

My Account