HR: 15:30h
AN: NS33A-06    [Abstracts]
TI: Small-Scale Structure of the Sea Ice Near Barrow, Alaska
AU: * Herman, R
EM: rherman@radford.edu
AF: Radford University, Department of Chemistry and Physics, Radford, VA 24142, United States
AB: A capacitively coupled resistivity survey was conducted on the sea ice near Barrow, Alaska in March of 2006. The purpose of this survey was to determine the effectiveness of a capacitively coupled resistivity array in determining the small-scale structure of the ice. This was new ice, less than 2 months old, and was ~100m offshore from the Naval Arctic Research Laboratory near Barrow. The data was obtained along both a single 300m line as well as in a 7m by 100m grid. With the ice being ~1-2m thick, unusually small n-spacings (dipole-dipole array) were used, the smallest of which was n/4. This allowed 5-6 layers of data to be obtained in the ice. The data inversion using RES2DINV was able to model the ice as shallow as ~20cm. The data from the 7mx100m grid has been inverted and shows the 3-d structure of the ice. Further examination of the inverted data has been performed in order to determine any fractal dimension present for the underside of the ice. The results of this analysis will be reported.
DE: 0750 Sea ice (4540)
SC: Near-Surface Geophysics [NS]
MN: 2007 Joint Assembly