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

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    01273580.pdf (887.0Kb)
    Issue Date
    2004-03
    Author
    Kanagaratnam, Pannirselvam
    Gogineni, Sivaprasad
    Ramasami, Vijay
    Braaten, David A.
    Publisher
    IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
    Type
    Article
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    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.
    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.
    URI
    http://hdl.handle.net/1808/1288
    Collections
    • Distinguished Professors Scholarly Works [918]
    • Geology Scholarly Works [245]
    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

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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