Penetration depth of interferometric synthetic‐aperture radar signals in snow and ice
Digital elevation models of glaciated terrain produced by the NASA/Jet Propulsion Laboratory (JPL) airborne interferometric synthetic-aperture radar (InSAR) instrument in Greenland and Alaska at the C- (5.6 cm wave-length) and L-band (24-cm) frequencies were compared with surface elevation measured...
Published in: | Geophysical Research Letters |
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2001
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Online Access: | https://escholarship.org/uc/item/5tx947cf https://escholarship.org/content/qt5tx947cf/qt5tx947cf.pdf https://doi.org/10.1029/2000gl012484 |
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ftcdlib:oai:escholarship.org:ark:/13030/qt5tx947cf 2024-09-15T18:07:34+00:00 Penetration depth of interferometric synthetic‐aperture radar signals in snow and ice Rignot, Eric Echelmeyer, Keith Krabill, William 3501 - 3504 2001-09-15 application/pdf https://escholarship.org/uc/item/5tx947cf https://escholarship.org/content/qt5tx947cf/qt5tx947cf.pdf https://doi.org/10.1029/2000gl012484 unknown eScholarship, University of California qt5tx947cf https://escholarship.org/uc/item/5tx947cf https://escholarship.org/content/qt5tx947cf/qt5tx947cf.pdf doi:10.1029/2000gl012484 CC-BY Geophysical Research Letters, vol 28, iss 18 Meteorology & Atmospheric Sciences article 2001 ftcdlib https://doi.org/10.1029/2000gl012484 2024-06-28T06:28:20Z Digital elevation models of glaciated terrain produced by the NASA/Jet Propulsion Laboratory (JPL) airborne interferometric synthetic-aperture radar (InSAR) instrument in Greenland and Alaska at the C- (5.6 cm wave-length) and L-band (24-cm) frequencies were compared with surface elevation measured from airborne laser altimetry to estimate the phase center of the interferometric depth, or penetration depth, δp. On cold polar firn at Greenland summit, δp = 9±2m at C- and 14±4m at L-band. On the exposed ice surface of Jakobshavn Isbrae, west Greenland, δp = 1±2 m at C- and 3±3 m at L-band except on smooth, marginal ice where δp = 15±5 m. On colder marginal ice of northeast Greenland, δp reaches 60 to 120 m at L-band. On the temperate ice of Brady Glacier, Alaska, δp is 4±2 m at C- and 12±6 m at L-band, with little dependence on snow/ice conditions. The implications of the results on the scientific use of InSAR data over snow/ice terrain is discussed. Article in Journal/Newspaper glacier glacier Greenland Jakobshavn Alaska University of California: eScholarship Geophysical Research Letters 28 18 3501 3504 |
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Open Polar |
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University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Meteorology & Atmospheric Sciences |
spellingShingle |
Meteorology & Atmospheric Sciences Rignot, Eric Echelmeyer, Keith Krabill, William Penetration depth of interferometric synthetic‐aperture radar signals in snow and ice |
topic_facet |
Meteorology & Atmospheric Sciences |
description |
Digital elevation models of glaciated terrain produced by the NASA/Jet Propulsion Laboratory (JPL) airborne interferometric synthetic-aperture radar (InSAR) instrument in Greenland and Alaska at the C- (5.6 cm wave-length) and L-band (24-cm) frequencies were compared with surface elevation measured from airborne laser altimetry to estimate the phase center of the interferometric depth, or penetration depth, δp. On cold polar firn at Greenland summit, δp = 9±2m at C- and 14±4m at L-band. On the exposed ice surface of Jakobshavn Isbrae, west Greenland, δp = 1±2 m at C- and 3±3 m at L-band except on smooth, marginal ice where δp = 15±5 m. On colder marginal ice of northeast Greenland, δp reaches 60 to 120 m at L-band. On the temperate ice of Brady Glacier, Alaska, δp is 4±2 m at C- and 12±6 m at L-band, with little dependence on snow/ice conditions. The implications of the results on the scientific use of InSAR data over snow/ice terrain is discussed. |
format |
Article in Journal/Newspaper |
author |
Rignot, Eric Echelmeyer, Keith Krabill, William |
author_facet |
Rignot, Eric Echelmeyer, Keith Krabill, William |
author_sort |
Rignot, Eric |
title |
Penetration depth of interferometric synthetic‐aperture radar signals in snow and ice |
title_short |
Penetration depth of interferometric synthetic‐aperture radar signals in snow and ice |
title_full |
Penetration depth of interferometric synthetic‐aperture radar signals in snow and ice |
title_fullStr |
Penetration depth of interferometric synthetic‐aperture radar signals in snow and ice |
title_full_unstemmed |
Penetration depth of interferometric synthetic‐aperture radar signals in snow and ice |
title_sort |
penetration depth of interferometric synthetic‐aperture radar signals in snow and ice |
publisher |
eScholarship, University of California |
publishDate |
2001 |
url |
https://escholarship.org/uc/item/5tx947cf https://escholarship.org/content/qt5tx947cf/qt5tx947cf.pdf https://doi.org/10.1029/2000gl012484 |
op_coverage |
3501 - 3504 |
genre |
glacier glacier Greenland Jakobshavn Alaska |
genre_facet |
glacier glacier Greenland Jakobshavn Alaska |
op_source |
Geophysical Research Letters, vol 28, iss 18 |
op_relation |
qt5tx947cf https://escholarship.org/uc/item/5tx947cf https://escholarship.org/content/qt5tx947cf/qt5tx947cf.pdf doi:10.1029/2000gl012484 |
op_rights |
CC-BY |
op_doi |
https://doi.org/10.1029/2000gl012484 |
container_title |
Geophysical Research Letters |
container_volume |
28 |
container_issue |
18 |
container_start_page |
3501 |
op_container_end_page |
3504 |
_version_ |
1810444948934230016 |