Assessing the Potential to Detect Oil Spills In and Under Snow Using Airborne Ground-Penetrating Radar
With recent increased interest in oil and gas exploration and development in the Arctic comes increased potential for an accidental hydrocarbon release into the cryosphere, including within and at the base of snow. There is a critical need to develop effective and reliable methods for detecting such...
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ftboisestateu:oai:scholarworks.boisestate.edu:cgiss_facpubs-1045 2023-10-29T02:34:36+01:00 Assessing the Potential to Detect Oil Spills In and Under Snow Using Airborne Ground-Penetrating Radar Bradford, John H. Dickens, David F. Brandvik, Per Johan 2010-03-12T08:00:00Z application/pdf https://scholarworks.boisestate.edu/cgiss_facpubs/46 https://scholarworks.boisestate.edu/context/cgiss_facpubs/article/1045/viewcontent/Bradford___Assessing_the_potential.pdf unknown ScholarWorks https://scholarworks.boisestate.edu/cgiss_facpubs/46 https://scholarworks.boisestate.edu/context/cgiss_facpubs/article/1045/viewcontent/Bradford___Assessing_the_potential.pdf This document was originally published by Society of Exploration Geophysicists in Geophysics . Copyright restrictions may apply. DOI: 10.1190/1.3312184 CGISS Publications and Presentations airborne radar ground penetrating radar oceanographic regions oil pollution Geosciences Earth Sciences Geophysics and Seismology text 2010 ftboisestateu 2023-09-29T15:03:46Z With recent increased interest in oil and gas exploration and development in the Arctic comes increased potential for an accidental hydrocarbon release into the cryosphere, including within and at the base of snow. There is a critical need to develop effective and reliable methods for detecting such spills. Numerical modeling shows that ground-penetrating radar (GPR) is sensitive to the presence of oil in the snow pack over a broad range of snow densities and oil types. Oil spills from the surface drain through the snow by the mechanisms of unsaturated flow and form geometrically complex distributions that are controlled by snow stratigraphy. These complex distributions generate an irregular pattern of radar reflections that can be differentiated from natural snow stratigraphy, but in many cases, interpretation will not be straightforward. Oil located at the base of the snow tends to reduce the impedance contrast with the underlying ice or soil substrate resulting in anomalously low-amplitude radar reflections. Results of a controlled field experiment using a helicopter- borne, 1000-MHz GPR system showed that a 2-cm-thick oil film trapped between snow and sea ice was detected based on a 51% decrease in reflection strength. This is the first reported test of GPR for the problem of oil detection in and under snow. Results indicate that GPR has the potential to become a robust tool that can substantially improve oil spill characterization and remediation. Text Arctic Sea ice Boise State University: Scholar Works |
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Boise State University: Scholar Works |
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ftboisestateu |
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topic |
airborne radar ground penetrating radar oceanographic regions oil pollution Geosciences Earth Sciences Geophysics and Seismology |
spellingShingle |
airborne radar ground penetrating radar oceanographic regions oil pollution Geosciences Earth Sciences Geophysics and Seismology Bradford, John H. Dickens, David F. Brandvik, Per Johan Assessing the Potential to Detect Oil Spills In and Under Snow Using Airborne Ground-Penetrating Radar |
topic_facet |
airborne radar ground penetrating radar oceanographic regions oil pollution Geosciences Earth Sciences Geophysics and Seismology |
description |
With recent increased interest in oil and gas exploration and development in the Arctic comes increased potential for an accidental hydrocarbon release into the cryosphere, including within and at the base of snow. There is a critical need to develop effective and reliable methods for detecting such spills. Numerical modeling shows that ground-penetrating radar (GPR) is sensitive to the presence of oil in the snow pack over a broad range of snow densities and oil types. Oil spills from the surface drain through the snow by the mechanisms of unsaturated flow and form geometrically complex distributions that are controlled by snow stratigraphy. These complex distributions generate an irregular pattern of radar reflections that can be differentiated from natural snow stratigraphy, but in many cases, interpretation will not be straightforward. Oil located at the base of the snow tends to reduce the impedance contrast with the underlying ice or soil substrate resulting in anomalously low-amplitude radar reflections. Results of a controlled field experiment using a helicopter- borne, 1000-MHz GPR system showed that a 2-cm-thick oil film trapped between snow and sea ice was detected based on a 51% decrease in reflection strength. This is the first reported test of GPR for the problem of oil detection in and under snow. Results indicate that GPR has the potential to become a robust tool that can substantially improve oil spill characterization and remediation. |
format |
Text |
author |
Bradford, John H. Dickens, David F. Brandvik, Per Johan |
author_facet |
Bradford, John H. Dickens, David F. Brandvik, Per Johan |
author_sort |
Bradford, John H. |
title |
Assessing the Potential to Detect Oil Spills In and Under Snow Using Airborne Ground-Penetrating Radar |
title_short |
Assessing the Potential to Detect Oil Spills In and Under Snow Using Airborne Ground-Penetrating Radar |
title_full |
Assessing the Potential to Detect Oil Spills In and Under Snow Using Airborne Ground-Penetrating Radar |
title_fullStr |
Assessing the Potential to Detect Oil Spills In and Under Snow Using Airborne Ground-Penetrating Radar |
title_full_unstemmed |
Assessing the Potential to Detect Oil Spills In and Under Snow Using Airborne Ground-Penetrating Radar |
title_sort |
assessing the potential to detect oil spills in and under snow using airborne ground-penetrating radar |
publisher |
ScholarWorks |
publishDate |
2010 |
url |
https://scholarworks.boisestate.edu/cgiss_facpubs/46 https://scholarworks.boisestate.edu/context/cgiss_facpubs/article/1045/viewcontent/Bradford___Assessing_the_potential.pdf |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
CGISS Publications and Presentations |
op_relation |
https://scholarworks.boisestate.edu/cgiss_facpubs/46 https://scholarworks.boisestate.edu/context/cgiss_facpubs/article/1045/viewcontent/Bradford___Assessing_the_potential.pdf |
op_rights |
This document was originally published by Society of Exploration Geophysicists in Geophysics . Copyright restrictions may apply. DOI: 10.1190/1.3312184 |
_version_ |
1781057247901646848 |