On the detection of crevasses in glacial ice with synthetic-aperture radar.
The intent of this study is to provide an analysis of the scattering from a crevasse in Antarctic ice, utilizing a physics-based model for the scattering process. Of primary interest is a crevasse covered with a snow bridge, which makes the crevasse undetectable in visible-light images. It is demons...
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ftosti:oai:osti.gov:989382 2023-07-30T03:58:28+02:00 On the detection of crevasses in glacial ice with synthetic-aperture radar. Brock, Billy C. 2010-10-21 application/pdf http://www.osti.gov/servlets/purl/989382 https://www.osti.gov/biblio/989382 https://doi.org/10.2172/989382 unknown http://www.osti.gov/servlets/purl/989382 https://www.osti.gov/biblio/989382 https://doi.org/10.2172/989382 doi:10.2172/989382 36 MATERIALS SCIENCE DETECTION DIELECTRIC MATERIALS FRACTALS GLACIERS PERMITTIVITY RADAR SCATTERING SNOW VIABILITY 2010 ftosti https://doi.org/10.2172/989382 2023-07-11T08:49:09Z The intent of this study is to provide an analysis of the scattering from a crevasse in Antarctic ice, utilizing a physics-based model for the scattering process. Of primary interest is a crevasse covered with a snow bridge, which makes the crevasse undetectable in visible-light images. It is demonstrated that a crevasse covered with a snow bridge can be visible in synthetic-aperture-radar (SAR) images. The model of the crevasse and snow bridge incorporates a complex dielectric permittivity model for dry snow and ice that takes into account the density profile of the glacier. The surface structure is based on a fractal model that can produce sastrugi-like features found on the surface of Antarctic glaciers. Simulated phase histories, computed with the Shooting and Bouncing Ray (SBR) method, are processed into SAR images. The viability of the SBR method for predicting scattering from a crevasse covered with a snow bridge is demonstrated. Some suggestions for improving the model are given. Other/Unknown Material Antarc* Antarctic SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Antarctic Sastrugi ENVELOPE(163.683,163.683,-74.617,-74.617) |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
36 MATERIALS SCIENCE DETECTION DIELECTRIC MATERIALS FRACTALS GLACIERS PERMITTIVITY RADAR SCATTERING SNOW VIABILITY |
spellingShingle |
36 MATERIALS SCIENCE DETECTION DIELECTRIC MATERIALS FRACTALS GLACIERS PERMITTIVITY RADAR SCATTERING SNOW VIABILITY Brock, Billy C. On the detection of crevasses in glacial ice with synthetic-aperture radar. |
topic_facet |
36 MATERIALS SCIENCE DETECTION DIELECTRIC MATERIALS FRACTALS GLACIERS PERMITTIVITY RADAR SCATTERING SNOW VIABILITY |
description |
The intent of this study is to provide an analysis of the scattering from a crevasse in Antarctic ice, utilizing a physics-based model for the scattering process. Of primary interest is a crevasse covered with a snow bridge, which makes the crevasse undetectable in visible-light images. It is demonstrated that a crevasse covered with a snow bridge can be visible in synthetic-aperture-radar (SAR) images. The model of the crevasse and snow bridge incorporates a complex dielectric permittivity model for dry snow and ice that takes into account the density profile of the glacier. The surface structure is based on a fractal model that can produce sastrugi-like features found on the surface of Antarctic glaciers. Simulated phase histories, computed with the Shooting and Bouncing Ray (SBR) method, are processed into SAR images. The viability of the SBR method for predicting scattering from a crevasse covered with a snow bridge is demonstrated. Some suggestions for improving the model are given. |
author |
Brock, Billy C. |
author_facet |
Brock, Billy C. |
author_sort |
Brock, Billy C. |
title |
On the detection of crevasses in glacial ice with synthetic-aperture radar. |
title_short |
On the detection of crevasses in glacial ice with synthetic-aperture radar. |
title_full |
On the detection of crevasses in glacial ice with synthetic-aperture radar. |
title_fullStr |
On the detection of crevasses in glacial ice with synthetic-aperture radar. |
title_full_unstemmed |
On the detection of crevasses in glacial ice with synthetic-aperture radar. |
title_sort |
on the detection of crevasses in glacial ice with synthetic-aperture radar. |
publishDate |
2010 |
url |
http://www.osti.gov/servlets/purl/989382 https://www.osti.gov/biblio/989382 https://doi.org/10.2172/989382 |
long_lat |
ENVELOPE(163.683,163.683,-74.617,-74.617) |
geographic |
Antarctic Sastrugi |
geographic_facet |
Antarctic Sastrugi |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://www.osti.gov/servlets/purl/989382 https://www.osti.gov/biblio/989382 https://doi.org/10.2172/989382 doi:10.2172/989382 |
op_doi |
https://doi.org/10.2172/989382 |
_version_ |
1772821257162588160 |