Determination of glacier velocities at a large spatial scale from optical satellite archives

Amaury Dehecq, Emmanuel Trouve, Noel Gourmelen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper we present a processing strategy to derive glaciers' velocity fields from a complete satellite archive. All possible pairs with a specified time span are formed, submitted to the same preprocessing and matched together to derive velocity fields. All the results are then selected on a pixel-by-pixel basis based on the confidence of the offset-tracking and merged together by computing the median in a spatio-temporal neighboorhood. The method is applied to 206 images covering the Karakoram region and a period of 3 years. This allows us to estimate a velocity for over 90% of the glaciers' area and to reduce the residuals from 9.9m/yr to 2.1m/yr.

Original languageEnglish
Title of host publicationInternational Geoscience and Remote Sensing Symposium (IGARSS)
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4014-4017
Number of pages4
ISBN (Print)9781479957750
DOIs
Publication statusPublished - 1 Jan 2014
EventJoint 2014 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2014 and the 35th Canadian Symposium on Remote Sensing, CSRS 2014 - Quebec City, United Kingdom
Duration: 13 Jul 201418 Jul 2014

Conference

ConferenceJoint 2014 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2014 and the 35th Canadian Symposium on Remote Sensing, CSRS 2014
Country/TerritoryUnited Kingdom
CityQuebec City
Period13/07/1418/07/14

Keywords

  • Image matching
  • Karakoram
  • Landsat
  • Mountain glaciers
  • Surface velocity

Fingerprint

Dive into the research topics of 'Determination of glacier velocities at a large spatial scale from optical satellite archives'. Together they form a unique fingerprint.

Cite this