Passive Microwave Signatures of Fractures and Ridges in Sea Ice at 33.6 GHz (Vertical Polarization) as Observed in Aircraft Images
An aircraft data set of coincident K sub a band (33 GHz, vertical polarization) passive microwave images and aerial photographs acquired in the Chukchi-Beaufort Sea region in March 1983 was analyzed to evaluate radiometric signatures of deformational features that occur in sea ice. A total of 115 fr...
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ftdtic:ADA268362 2023-05-15T15:40:16+02:00 Passive Microwave Signatures of Fractures and Ridges in Sea Ice at 33.6 GHz (Vertical Polarization) as Observed in Aircraft Images Farmer, L. D. Eppler, Duane T. Lohanick, Alan NAVAL RESEARCH LAB STENNIS SPACE CENTER MS 1993-03 text/html http://www.dtic.mil/docs/citations/ADA268362 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA268362 en eng http://www.dtic.mil/docs/citations/ADA268362 Approved for public release; distribution is unlimited. DTIC AND NTIS Snow Ice and Permafrost Optics *OPTICAL DETECTION *ICE MECHANICS *SEA ICE TEMPERATURE POLARIZATION DEFORMATION FRACTURE(MECHANICS) SNOW COVER PRESSURE SIGNATURES ICE BREAKUP K BAND BEAUFORT SEA RIDGES RADIOMETRY REMOTE DETECTION AERIAL PHOTOGRAPHS WIDTH CLASSIFICATION ICE BRIGHTNESS MICROWAVES THESES CONTRAST DETECTION PE61153N WUDN256025 REMOTE SENSING Text 1993 ftdtic 2016-02-22T07:18:18Z An aircraft data set of coincident K sub a band (33 GHz, vertical polarization) passive microwave images and aerial photographs acquired in the Chukchi-Beaufort Sea region in March 1983 was analyzed to evaluate radiometric signatures of deformational features that occur in sea ice. A total of 115 fractures and 197 pressure ridges were examined with respect to physical appearance (relative age, snow cover, ice type, width, orientation) as observed in photographs, and radiometric character (brightness temperature, radiometric contrast with respect to adjacent ice, radiometric profile across the feature) as measured from digital passive microwave images. Of the deformational features that were observed in aerial photographs, 82%. had radiometric signatures of sufficient contrast to be observed in passive microwave images. Fractures and ridges have equal chance of detection, but fractures cannot be distinguished from pressure ridges on the basis of brightness temperature, radiometric contrast, or characteristics of radiometric profiles measured across these features. Sea ice classification, Passive microwave, Remote sensing. Text Beaufort Sea Chukchi Ice permafrost Sea ice Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
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ftdtic |
language |
English |
topic |
Snow Ice and Permafrost Optics *OPTICAL DETECTION *ICE MECHANICS *SEA ICE TEMPERATURE POLARIZATION DEFORMATION FRACTURE(MECHANICS) SNOW COVER PRESSURE SIGNATURES ICE BREAKUP K BAND BEAUFORT SEA RIDGES RADIOMETRY REMOTE DETECTION AERIAL PHOTOGRAPHS WIDTH CLASSIFICATION ICE BRIGHTNESS MICROWAVES THESES CONTRAST DETECTION PE61153N WUDN256025 REMOTE SENSING |
spellingShingle |
Snow Ice and Permafrost Optics *OPTICAL DETECTION *ICE MECHANICS *SEA ICE TEMPERATURE POLARIZATION DEFORMATION FRACTURE(MECHANICS) SNOW COVER PRESSURE SIGNATURES ICE BREAKUP K BAND BEAUFORT SEA RIDGES RADIOMETRY REMOTE DETECTION AERIAL PHOTOGRAPHS WIDTH CLASSIFICATION ICE BRIGHTNESS MICROWAVES THESES CONTRAST DETECTION PE61153N WUDN256025 REMOTE SENSING Farmer, L. D. Eppler, Duane T. Lohanick, Alan Passive Microwave Signatures of Fractures and Ridges in Sea Ice at 33.6 GHz (Vertical Polarization) as Observed in Aircraft Images |
topic_facet |
Snow Ice and Permafrost Optics *OPTICAL DETECTION *ICE MECHANICS *SEA ICE TEMPERATURE POLARIZATION DEFORMATION FRACTURE(MECHANICS) SNOW COVER PRESSURE SIGNATURES ICE BREAKUP K BAND BEAUFORT SEA RIDGES RADIOMETRY REMOTE DETECTION AERIAL PHOTOGRAPHS WIDTH CLASSIFICATION ICE BRIGHTNESS MICROWAVES THESES CONTRAST DETECTION PE61153N WUDN256025 REMOTE SENSING |
description |
An aircraft data set of coincident K sub a band (33 GHz, vertical polarization) passive microwave images and aerial photographs acquired in the Chukchi-Beaufort Sea region in March 1983 was analyzed to evaluate radiometric signatures of deformational features that occur in sea ice. A total of 115 fractures and 197 pressure ridges were examined with respect to physical appearance (relative age, snow cover, ice type, width, orientation) as observed in photographs, and radiometric character (brightness temperature, radiometric contrast with respect to adjacent ice, radiometric profile across the feature) as measured from digital passive microwave images. Of the deformational features that were observed in aerial photographs, 82%. had radiometric signatures of sufficient contrast to be observed in passive microwave images. Fractures and ridges have equal chance of detection, but fractures cannot be distinguished from pressure ridges on the basis of brightness temperature, radiometric contrast, or characteristics of radiometric profiles measured across these features. Sea ice classification, Passive microwave, Remote sensing. |
author2 |
NAVAL RESEARCH LAB STENNIS SPACE CENTER MS |
format |
Text |
author |
Farmer, L. D. Eppler, Duane T. Lohanick, Alan |
author_facet |
Farmer, L. D. Eppler, Duane T. Lohanick, Alan |
author_sort |
Farmer, L. D. |
title |
Passive Microwave Signatures of Fractures and Ridges in Sea Ice at 33.6 GHz (Vertical Polarization) as Observed in Aircraft Images |
title_short |
Passive Microwave Signatures of Fractures and Ridges in Sea Ice at 33.6 GHz (Vertical Polarization) as Observed in Aircraft Images |
title_full |
Passive Microwave Signatures of Fractures and Ridges in Sea Ice at 33.6 GHz (Vertical Polarization) as Observed in Aircraft Images |
title_fullStr |
Passive Microwave Signatures of Fractures and Ridges in Sea Ice at 33.6 GHz (Vertical Polarization) as Observed in Aircraft Images |
title_full_unstemmed |
Passive Microwave Signatures of Fractures and Ridges in Sea Ice at 33.6 GHz (Vertical Polarization) as Observed in Aircraft Images |
title_sort |
passive microwave signatures of fractures and ridges in sea ice at 33.6 ghz (vertical polarization) as observed in aircraft images |
publishDate |
1993 |
url |
http://www.dtic.mil/docs/citations/ADA268362 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA268362 |
genre |
Beaufort Sea Chukchi Ice permafrost Sea ice |
genre_facet |
Beaufort Sea Chukchi Ice permafrost Sea ice |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA268362 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766372455336640512 |