Satellite geological and geophysical remote sensing of Iceland
The author has identified the following significant results. The seasonal change in size of sediment plumes from the many glacial rivers which discharge into the sea along the south coast gives an indication of seasonal changes in melting rates of glaciers. Changes in area of lakes, particularly gla...
Main Author: | |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
1974
|
Subjects: | |
Online Access: | http://hdl.handle.net/2060/19740011834 |
id |
ftnasantrs:oai:casi.ntrs.nasa.gov:19740011834 |
---|---|
record_format |
openpolar |
spelling |
ftnasantrs:oai:casi.ntrs.nasa.gov:19740011834 2023-05-15T16:21:43+02:00 Satellite geological and geophysical remote sensing of Iceland Williams, R. S., Jr. Unclassified, Unlimited, Publicly available Jan 1, 1974 application/pdf http://hdl.handle.net/2060/19740011834 unknown Document ID: 19740011834 Accession ID: 74N19947 http://hdl.handle.net/2060/19740011834 No Copyright CASI GEOPHYSICS E74-10412 NASA-CR-137271 1974 ftnasantrs 2019-07-21T05:31:33Z The author has identified the following significant results. The seasonal change in size of sediment plumes from the many glacial rivers which discharge into the sea along the south coast gives an indication of seasonal changes in melting rates of glaciers. Changes in area of lakes, particularly glacier-margin lakes can be mapped of most of the area covered by glacial ice in Iceland. Recently deglaciated terrain can be distinguished on MSS color composites. The increase in surface area of the ice-dammed lake, Graenalon, was monitored until the occurrence of a jokulhlaup, after which the surface area of the lake was considerably reduced. The effect of two subglacial jokulhlaups on the overlying ice cover can be seen in the form of collapse features in the surface of Vatnajokull. MSS color composites permit the mapping of five distinct vegetation types; forests, cultivated areas, grasslands, reclaimed areas, and lichen-covered bedrock. Features as small as 100 m can be discerned. The ability to map landforms, vegetation distribution, occurrence of snowcover, glaciers, and geologic structure stereoscopically permits a much greater accurate analysis of these features. 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. The seasonal change in size of sediment plumes from the many glacial rivers which discharge into the sea along the south coast gives an indication of seasonal changes in melting rates of glaciers. Changes in area of lakes, particularly glacier-margin lakes can be mapped of most of the area covered by glacial ice in Iceland. Recently deglaciated terrain can be distinguished on MSS color composites. The increase in surface area of the ice-dammed lake, Graenalon, was monitored until the occurrence of a jokulhlaup, after which the surface area of the lake was considerably reduced. The effect of two subglacial jokulhlaups on the overlying ice cover can be seen in the form of collapse features in the surface of Vatnajokull. MSS color composites permit the mapping of five distinct vegetation types; forests, cultivated areas, grasslands, reclaimed areas, and lichen-covered bedrock. Features as small as 100 m can be discerned. The ability to map landforms, vegetation distribution, occurrence of snowcover, glaciers, and geologic structure stereoscopically permits a much greater accurate analysis of these features. |
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/2060/19740011834 |
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: 19740011834 Accession ID: 74N19947 http://hdl.handle.net/2060/19740011834 |
op_rights |
No Copyright |
_version_ |
1766009713337565184 |