Imaging radar observations of Askja Caldera, Iceland

A 'blind' test involving interpretation of computer-enhanced like- and cross-polarized radar images is used to evaluate the surface roughness of Askja Caldera, a large volcanic complex in central Iceland. The 'blind' test differs from earlier analyses of radar observations in tha...

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Bibliographic Details
Main Authors: Malin, M. C., Evans, D., Elachi, C.
Format: Other/Unknown Material
Language:unknown
Published: 1978
Subjects:
43
Online Access:http://ntrs.nasa.gov/search.jsp?R=19790030631
id ftnasantrs:oai:casi.ntrs.nasa.gov:19790030631
record_format openpolar
spelling ftnasantrs:oai:casi.ntrs.nasa.gov:19790030631 2023-05-15T16:46:53+02:00 Imaging radar observations of Askja Caldera, Iceland Malin, M. C. Evans, D. Elachi, C. Unclassified, Unlimited, Publicly available Nov 1, 1978 http://ntrs.nasa.gov/search.jsp?R=19790030631 unknown http://ntrs.nasa.gov/search.jsp?R=19790030631 Accession ID: 79A14644 Copyright Other Sources 43 Geophysical Research Letters; 5; Nov. 197 1978 ftnasantrs 2012-02-15T13:49:04Z A 'blind' test involving interpretation of computer-enhanced like- and cross-polarized radar images is used to evaluate the surface roughness of Askja Caldera, a large volcanic complex in central Iceland. The 'blind' test differs from earlier analyses of radar observations in that computer-processes images and both qualitative and quantitative analyses are used. Attention is given to photogeologic examination and subsequent survey-type field observations, along with aerial photography during the field trip. The results indicate that the 'blind' test of radar interpretation of the Askja volcanic area can be considered suitable within the framework of limitations of radar data considered explicitly from the onset. The limitations of the radar techniques can be eliminated by using oblique-viewing conditions to remove geometric distortions and slope effects. Other/Unknown Material Iceland NASA Technical Reports Server (NTRS) Askja ENVELOPE(-16.802,-16.802,65.042,65.042)
institution Open Polar
collection NASA Technical Reports Server (NTRS)
op_collection_id ftnasantrs
language unknown
topic 43
spellingShingle 43
Malin, M. C.
Evans, D.
Elachi, C.
Imaging radar observations of Askja Caldera, Iceland
topic_facet 43
description A 'blind' test involving interpretation of computer-enhanced like- and cross-polarized radar images is used to evaluate the surface roughness of Askja Caldera, a large volcanic complex in central Iceland. The 'blind' test differs from earlier analyses of radar observations in that computer-processes images and both qualitative and quantitative analyses are used. Attention is given to photogeologic examination and subsequent survey-type field observations, along with aerial photography during the field trip. The results indicate that the 'blind' test of radar interpretation of the Askja volcanic area can be considered suitable within the framework of limitations of radar data considered explicitly from the onset. The limitations of the radar techniques can be eliminated by using oblique-viewing conditions to remove geometric distortions and slope effects.
format Other/Unknown Material
author Malin, M. C.
Evans, D.
Elachi, C.
author_facet Malin, M. C.
Evans, D.
Elachi, C.
author_sort Malin, M. C.
title Imaging radar observations of Askja Caldera, Iceland
title_short Imaging radar observations of Askja Caldera, Iceland
title_full Imaging radar observations of Askja Caldera, Iceland
title_fullStr Imaging radar observations of Askja Caldera, Iceland
title_full_unstemmed Imaging radar observations of Askja Caldera, Iceland
title_sort imaging radar observations of askja caldera, iceland
publishDate 1978
url http://ntrs.nasa.gov/search.jsp?R=19790030631
op_coverage Unclassified, Unlimited, Publicly available
long_lat ENVELOPE(-16.802,-16.802,65.042,65.042)
geographic Askja
geographic_facet Askja
genre Iceland
genre_facet Iceland
op_source Other Sources
op_relation http://ntrs.nasa.gov/search.jsp?R=19790030631
Accession ID: 79A14644
op_rights Copyright
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