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...
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ftcdlib:oai:escholarship.org/ark:/13030/qt5tx947cf 2023-05-15T16:20:36+02:00 Penetration depth of interferometric synthetic-aperture radar signals in snow and ice Rignot, E Echelmeyer, K Krabill, W 3501 - 3504 2001-09-15 application/pdf https://escholarship.org/uc/item/5tx947cf unknown eScholarship, University of California qt5tx947cf https://escholarship.org/uc/item/5tx947cf CC-BY CC-BY Geophysical Research Letters, vol 28, iss 18 Meteorology & Atmospheric Sciences article 2001 ftcdlib 2020-03-20T23:55:51Z 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 Greenland |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Meteorology & Atmospheric Sciences |
spellingShingle |
Meteorology & Atmospheric Sciences Rignot, E Echelmeyer, K Krabill, W 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, E Echelmeyer, K Krabill, W |
author_facet |
Rignot, E Echelmeyer, K Krabill, W |
author_sort |
Rignot, E |
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 |
op_coverage |
3501 - 3504 |
geographic |
Greenland |
geographic_facet |
Greenland |
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 |
op_rights |
CC-BY |
op_rightsnorm |
CC-BY |
_version_ |
1766008523563466752 |