A wideband radar for high-resolution mapping of near-surface internal layers in glacial ice

Kanagaratnam, Pannirselvam; Gogineni, Sivaprasad; Ramasami, Vijay; Braaten, David A.

dc.contributor.author	Kanagaratnam, Pannirselvam
dc.contributor.author	Gogineni, Sivaprasad
dc.contributor.author	Ramasami, Vijay
dc.contributor.author	Braaten, David A.
dc.date.accessioned	2007-04-06T14:26:22Z
dc.date.available	2007-04-06T14:26:22Z
dc.date.issued	2004-03
dc.identifier.citation	Kanagaratnam, P; Gogineni, SP; Ramasami, V; Braaten, D. A wideband radar for high-resolution mapping of near-surface internal layers in glacial ice. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING. March 2004. 42(3) : 483-490	en
dc.identifier.other	10.1109/36.957274
dc.identifier.uri	http://hdl.handle.net/1808/1288
dc.description	©2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.	en
dc.description.abstract	Snow accumulation rate is an important parameter in determining the mass balance of polar ice sheets. Accumulation rate is currently determined by analyzing ice cores and snow pits. Inadequate sampling of the spatial variations in the ice sheet accumulation has resulted in accumulation rate uncertainties as large as 24%. We designed and developed a 600-900-MHz airborne radar system for high-resolution mapping of the near-surface internal layers for estimating the accumulation rate of polar ice sheets. Our radar system can provide improved spatial and temporal coverage by mapping a continuous profile of the isochronous layers in the ice sheet. During the 2002 field season in Greenland, we successfully mapped the near-surface layers to a depth of 200 m in the dry-snow zone, 120 m in the percolation zone, and 20 m in the melt zone. We determined the water equivalent accumulation rate at the NASA-U_1 site to be 34.9 +/- 5.1 cm/year from 1964 to 1992. This is in close agreement with the ice-core derived accumulation rate of 34.6 cm/year for the same period.	en
dc.language.iso	en_US	en
dc.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
dc.subject	Airborne radar
dc.subject	Arctic regions
dc.subject	Frequency-modulated continuous wave
dc.subject	Snow
dc.title	A wideband radar for high-resolution mapping of near-surface internal layers in glacial ice	en
dc.type	Article
dc.subject.uri	http://id.worldcat.org/fast/1094509
dc.subject.uri	http://id.worldcat.org/fast/1086772
dc.subject.uri	http://id.worldcat.org/fast/802765
dc.subject.uri	http://id.worldcat.org/fast/1240227
dc.subject.uri	http://id.worldcat.org/fast/1121907
dc.subject.fast	Remote-sensing images
dc.subject.fast	Radar in aeronautics
dc.subject.fast	Airborne profile recorder
dc.subject.fast	Arctic Regions
dc.subject.fast	Snow
dc.rights.accessrights	openAccess

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