Unusual Radar Echoes from the Greenland Ice Sheet
Airborne radar images of part of the Greenland ice sheet reveal icy terrain whose radar properties are unique among radar-studied terrestrial surfaces but resemble those of Jupiter's icy Galilean satellites. The 5.6- and 24-centimeter-wavelength echoes from the Greenland percolation zone, like...
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American Association for the Advancement of Science (AAAS)
1993
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Online Access: | http://dx.doi.org/10.1126/science.261.5129.1710 https://www.science.org/doi/pdf/10.1126/science.261.5129.1710 |
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craaas:10.1126/science.261.5129.1710 2024-09-15T18:08:20+00:00 Unusual Radar Echoes from the Greenland Ice Sheet Rignot, E. J. Ostro, S. J. van Zyl, J. J. Jezek, K. C. 1993 http://dx.doi.org/10.1126/science.261.5129.1710 https://www.science.org/doi/pdf/10.1126/science.261.5129.1710 en eng American Association for the Advancement of Science (AAAS) Science volume 261, issue 5129, page 1710-1713 ISSN 0036-8075 1095-9203 journal-article 1993 craaas https://doi.org/10.1126/science.261.5129.1710 2024-08-29T04:01:00Z Airborne radar images of part of the Greenland ice sheet reveal icy terrain whose radar properties are unique among radar-studied terrestrial surfaces but resemble those of Jupiter's icy Galilean satellites. The 5.6- and 24-centimeter-wavelength echoes from the Greenland percolation zone, like the 3.5- and 13-centimeter-wavelength echoes from the icy satellites, are extremely intense and have anomalous circular and linear polarization ratios. However, the detailed subsurface configurations of the Galilean satellite regoliths, where heterogeneities are the product of prolonged meteoroid bombardment, are unlikely to resemble that within the Greenland percolation zone, where heterogeneities are the product of seasonal melting and refreezing. Article in Journal/Newspaper Greenland Ice Sheet AAAS Resource Center (American Association for the Advancement of Science) Science 261 5129 1710 1713 |
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Open Polar |
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AAAS Resource Center (American Association for the Advancement of Science) |
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craaas |
language |
English |
description |
Airborne radar images of part of the Greenland ice sheet reveal icy terrain whose radar properties are unique among radar-studied terrestrial surfaces but resemble those of Jupiter's icy Galilean satellites. The 5.6- and 24-centimeter-wavelength echoes from the Greenland percolation zone, like the 3.5- and 13-centimeter-wavelength echoes from the icy satellites, are extremely intense and have anomalous circular and linear polarization ratios. However, the detailed subsurface configurations of the Galilean satellite regoliths, where heterogeneities are the product of prolonged meteoroid bombardment, are unlikely to resemble that within the Greenland percolation zone, where heterogeneities are the product of seasonal melting and refreezing. |
format |
Article in Journal/Newspaper |
author |
Rignot, E. J. Ostro, S. J. van Zyl, J. J. Jezek, K. C. |
spellingShingle |
Rignot, E. J. Ostro, S. J. van Zyl, J. J. Jezek, K. C. Unusual Radar Echoes from the Greenland Ice Sheet |
author_facet |
Rignot, E. J. Ostro, S. J. van Zyl, J. J. Jezek, K. C. |
author_sort |
Rignot, E. J. |
title |
Unusual Radar Echoes from the Greenland Ice Sheet |
title_short |
Unusual Radar Echoes from the Greenland Ice Sheet |
title_full |
Unusual Radar Echoes from the Greenland Ice Sheet |
title_fullStr |
Unusual Radar Echoes from the Greenland Ice Sheet |
title_full_unstemmed |
Unusual Radar Echoes from the Greenland Ice Sheet |
title_sort |
unusual radar echoes from the greenland ice sheet |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1993 |
url |
http://dx.doi.org/10.1126/science.261.5129.1710 https://www.science.org/doi/pdf/10.1126/science.261.5129.1710 |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Science volume 261, issue 5129, page 1710-1713 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.261.5129.1710 |
container_title |
Science |
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261 |
container_issue |
5129 |
container_start_page |
1710 |
op_container_end_page |
1713 |
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1810445654669918208 |