Glacier surface velocity estimation using SAR interferometry technique applying ascending and descending passes in Himalayas
In this study ascending and descending passes interferometric synthetic aperture radar (InSAR) techniques are used for glacier surface velocity estimation in the Himalaya. Single-track interferometric measurements are sensitive to only a single component of the three dimensional (3-D) velocity vecto...
Published in: | International Journal of Applied Earth Observation and Geoinformation |
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Language: | English |
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Online Access: | http://dspace.library.iitb.ac.in/jspui/handle/100/14096 https://doi.org/10.1016/j.jag.2011.02.004 |
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ftiitbombay:oai:dsapce.library.iitb.ac.in:100/14096 2023-05-15T16:21:09+02:00 Glacier surface velocity estimation using SAR interferometry technique applying ascending and descending passes in Himalayas KUMAR, V VENKATARAMANA, G HOGDA, KA 2011 http://dspace.library.iitb.ac.in/jspui/handle/100/14096 https://doi.org/10.1016/j.jag.2011.02.004 English eng ELSEVIER SCIENCE BV INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION,13(4)545-551 0303-2434 http://dx.doi.org/10.1016/j.jag.2011.02.004 http://dspace.library.iitb.ac.in/jspui/handle/100/14096 Ice-Sheet Motion Satellite Radar Interferometry Greenland Flow Himalaya Sar Insar Glacier Velocity Article 2011 ftiitbombay https://doi.org/10.1016/j.jag.2011.02.004 2021-06-03T17:53:05Z In this study ascending and descending passes interferometric synthetic aperture radar (InSAR) techniques are used for glacier surface velocity estimation in the Himalaya. Single-track interferometric measurements are sensitive to only a single component of the three dimensional (3-D) velocity vectors. European Remote Sensing satellites (ERS-1/2) tandem mission data in ascending and descending tracks provide an opportunity to resolve the three velocity components under the assumption that glacier flow is parallel to its surface. Using the surface slope as an essential input in this technique the velocity pattern of Siachen glacier in Himalaya has been modelled. Glaciers in the Himalayan region maintain excellent coherence of SAR return signals in one-day temporal difference. As a result we could obtain spatially continuous surface velocity field with a precision of fraction of radar wavelength. The results covering the main course of glacier are analysed in terms of spatial and temporal variations. A maximum velocity of 43 cm/day has been observed in the upper middle portion of the glacier. This technique has been found accurate for monitoring the flow rates in this region, suggesting that routine monitoring of diurnal movement Himalayan glaciers would be immensely useful in the present day context of climate change. (C) 2011 Elsevier B.V. All rights reserved. Article in Journal/Newspaper glacier Greenland Ice Sheet DSpace@IIT Bombay (Indian Institute of Technology) Greenland International Journal of Applied Earth Observation and Geoinformation 13 4 545 551 |
institution |
Open Polar |
collection |
DSpace@IIT Bombay (Indian Institute of Technology) |
op_collection_id |
ftiitbombay |
language |
English |
topic |
Ice-Sheet Motion Satellite Radar Interferometry Greenland Flow Himalaya Sar Insar Glacier Velocity |
spellingShingle |
Ice-Sheet Motion Satellite Radar Interferometry Greenland Flow Himalaya Sar Insar Glacier Velocity KUMAR, V VENKATARAMANA, G HOGDA, KA Glacier surface velocity estimation using SAR interferometry technique applying ascending and descending passes in Himalayas |
topic_facet |
Ice-Sheet Motion Satellite Radar Interferometry Greenland Flow Himalaya Sar Insar Glacier Velocity |
description |
In this study ascending and descending passes interferometric synthetic aperture radar (InSAR) techniques are used for glacier surface velocity estimation in the Himalaya. Single-track interferometric measurements are sensitive to only a single component of the three dimensional (3-D) velocity vectors. European Remote Sensing satellites (ERS-1/2) tandem mission data in ascending and descending tracks provide an opportunity to resolve the three velocity components under the assumption that glacier flow is parallel to its surface. Using the surface slope as an essential input in this technique the velocity pattern of Siachen glacier in Himalaya has been modelled. Glaciers in the Himalayan region maintain excellent coherence of SAR return signals in one-day temporal difference. As a result we could obtain spatially continuous surface velocity field with a precision of fraction of radar wavelength. The results covering the main course of glacier are analysed in terms of spatial and temporal variations. A maximum velocity of 43 cm/day has been observed in the upper middle portion of the glacier. This technique has been found accurate for monitoring the flow rates in this region, suggesting that routine monitoring of diurnal movement Himalayan glaciers would be immensely useful in the present day context of climate change. (C) 2011 Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
KUMAR, V VENKATARAMANA, G HOGDA, KA |
author_facet |
KUMAR, V VENKATARAMANA, G HOGDA, KA |
author_sort |
KUMAR, V |
title |
Glacier surface velocity estimation using SAR interferometry technique applying ascending and descending passes in Himalayas |
title_short |
Glacier surface velocity estimation using SAR interferometry technique applying ascending and descending passes in Himalayas |
title_full |
Glacier surface velocity estimation using SAR interferometry technique applying ascending and descending passes in Himalayas |
title_fullStr |
Glacier surface velocity estimation using SAR interferometry technique applying ascending and descending passes in Himalayas |
title_full_unstemmed |
Glacier surface velocity estimation using SAR interferometry technique applying ascending and descending passes in Himalayas |
title_sort |
glacier surface velocity estimation using sar interferometry technique applying ascending and descending passes in himalayas |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2011 |
url |
http://dspace.library.iitb.ac.in/jspui/handle/100/14096 https://doi.org/10.1016/j.jag.2011.02.004 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Ice Sheet |
genre_facet |
glacier Greenland Ice Sheet |
op_relation |
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION,13(4)545-551 0303-2434 http://dx.doi.org/10.1016/j.jag.2011.02.004 http://dspace.library.iitb.ac.in/jspui/handle/100/14096 |
op_doi |
https://doi.org/10.1016/j.jag.2011.02.004 |
container_title |
International Journal of Applied Earth Observation and Geoinformation |
container_volume |
13 |
container_issue |
4 |
container_start_page |
545 |
op_container_end_page |
551 |
_version_ |
1766009173017886720 |