Satellite geological and geophysical remote sensing of Iceland
The author has identified the following significant results. Most of the research emphasis was directed at the analysis of Icelandic icecaps on ERTS imagery. A number of new findings were made, including: (1) on low sun angle imagery of Hofsjokull, the outline of a probable central volcano can be se...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19740023691 2023-05-15T16:21:42+02:00 Satellite geological and geophysical remote sensing of Iceland Williams, R. S., Jr. Unclassified, Unlimited, Publicly available May 1, 1974 application/pdf http://hdl.handle.net/2060/19740023691 unknown Document ID: 19740023691 Accession ID: 74N31804 http://hdl.handle.net/2060/19740023691 No Copyright CASI GEOPHYSICS E74-10723 NASA-CR-139556 1974 ftnasantrs 2019-07-21T05:30:25Z The author has identified the following significant results. Most of the research emphasis was directed at the analysis of Icelandic icecaps on ERTS imagery. A number of new findings were made, including: (1) on low sun angle imagery of Hofsjokull, the outline of a probable central volcano can be seen delineated on the northwest part of the icecap; (2) on low sun angle imagery of Langjokull, two parallel hyaloclastite ridges can be seen to continue for more than 10 km in from the margin of the icecap; (3) measurements of contorted medial moraines on images of Skeioararjokull, acquired about 11 months apart show an approximate 600 m of annual glacier movement; (4) measurements on images of the surging glacier, Eyjabakkajokull, taken about 11 months apart show an approximate 1.8 km of movement during that time; and (5) successive ERTS images of the glacier-dammed lake, Graenalon, show an increase in area of the lake until the ice dam was partially breached, causing a jokulhlaup across the Skeioararsandur. Because of the shape of the lake basin the elevation of the post-jokulhlaup lake can be determined from ERTS imagery to + or - 2 m. Other/Unknown Material glacier Iceland NASA Technical Reports Server (NTRS) Dammed Lake ENVELOPE(-68.258,-68.258,68.496,68.496) |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
GEOPHYSICS |
spellingShingle |
GEOPHYSICS Williams, R. S., Jr. Satellite geological and geophysical remote sensing of Iceland |
topic_facet |
GEOPHYSICS |
description |
The author has identified the following significant results. Most of the research emphasis was directed at the analysis of Icelandic icecaps on ERTS imagery. A number of new findings were made, including: (1) on low sun angle imagery of Hofsjokull, the outline of a probable central volcano can be seen delineated on the northwest part of the icecap; (2) on low sun angle imagery of Langjokull, two parallel hyaloclastite ridges can be seen to continue for more than 10 km in from the margin of the icecap; (3) measurements of contorted medial moraines on images of Skeioararjokull, acquired about 11 months apart show an approximate 600 m of annual glacier movement; (4) measurements on images of the surging glacier, Eyjabakkajokull, taken about 11 months apart show an approximate 1.8 km of movement during that time; and (5) successive ERTS images of the glacier-dammed lake, Graenalon, show an increase in area of the lake until the ice dam was partially breached, causing a jokulhlaup across the Skeioararsandur. Because of the shape of the lake basin the elevation of the post-jokulhlaup lake can be determined from ERTS imagery to + or - 2 m. |
format |
Other/Unknown Material |
author |
Williams, R. S., Jr. |
author_facet |
Williams, R. S., Jr. |
author_sort |
Williams, R. S., Jr. |
title |
Satellite geological and geophysical remote sensing of Iceland |
title_short |
Satellite geological and geophysical remote sensing of Iceland |
title_full |
Satellite geological and geophysical remote sensing of Iceland |
title_fullStr |
Satellite geological and geophysical remote sensing of Iceland |
title_full_unstemmed |
Satellite geological and geophysical remote sensing of Iceland |
title_sort |
satellite geological and geophysical remote sensing of iceland |
publishDate |
1974 |
url |
http://hdl.handle.net/2060/19740023691 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(-68.258,-68.258,68.496,68.496) |
geographic |
Dammed Lake |
geographic_facet |
Dammed Lake |
genre |
glacier Iceland |
genre_facet |
glacier Iceland |
op_source |
CASI |
op_relation |
Document ID: 19740023691 Accession ID: 74N31804 http://hdl.handle.net/2060/19740023691 |
op_rights |
No Copyright |
_version_ |
1766009693430349824 |