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    Space shuttle observations of terrestrial impact structures using SIR-C and X-SAR radars

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    Author
    McHone, John F.
    Greeley, Ronald
    Williams, Kevin K.
    Blumberg, Dan G.
    Kuzmin, Ruslan O.
    Issue Date
    2002-01-01
    Keywords
    Space shuttle
    terrestrial
    impact structures
    SIR-C
    X-SAR
    radars
    
    Metadata
    Show full item record
    Citation
    McHone, J. F., Greeley, R., Williams, K. K., Blumberg, D. G., & Kuzmin, R. O. (2002). Space shuttle observations of terrestrial impact structures using SIR‐C and X‐SAR radars. Meteoritics & Planetary Science, 37(3), 407-420.
    Publisher
    The Meteoritical Society
    Journal
    Meteoritics & Planetary Science
    URI
    http://hdl.handle.net/10150/655487
    DOI
    10.1111/j.1945-5100.2002.tb00824.x
    Additional Links
    https://meteoritical.org/
    Abstract
    Ten terrestrial impact structures were imaged during two flights of the 1994 Space Radar Laboratory (SRL) experiment. These craters include Wolf Creek, Australia; Roter Kamm, Namibia; Zhamanshin, Kazakhstan; B.P. and Oasis, Libya; Aorounga, Chad; Amguid, Algeria; and Spider, Connolly Basin and Henbury, Australia. SRL contained two co-registered instruments; the United States SIR-C polarimetric radar system operating in L-band (lambda =24 cm) and C-band (lambda =5.6 cm), and the joint German/Italian X-SAR vertically-polarized radar operating in X-band (lambda =3 cm). Comparisons show SRL images to be complementary to, or in some cases superior to, corresponding optical images for evaluating size, location, and relative age of impact features. Regardless of wavelength or polarization, craters with significant relief appear prominently on radar as a result of slope and roughness effects. In desert regions, longer wavelengths penetrate dry sand mantles to reveal hidden crater dimensions or associated buried landforms. Radar polarities and wavelengths are particularly sensitive to vegetation, surface roughness, and soil moisture or electrical properties. In the more temperate environments of Kazakhstan and Australia, SRL images show detailed stream patterns that reveal the location and structure of otherwise obscured impact features.
    Type
    Article
    text
    Language
    en
    ISSN
    1945-5100
    ae974a485f413a2113503eed53cd6c53
    10.1111/j.1945-5100.2002.tb00824.x
    Scopus Count
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    Meteoritics & Planetary Science, Volume 37, Number 3 (2002)

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