DETECTION AND QUANTIFICATION OF ROCK GLACIER CREEP USING HIGH-RESOLUTION ORTHOIMAGES OF VIRTUAL GLOBES

Rock glaciers are creep phenomena of mountain permafrost and are composed of ice and rocks. Active rock glaciers move downslope by force of gravity. Maximum creep/flow velocities of individual rock glaciers may vary from a few centimeters up to several meters per year, depending on the underlying te...

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Published in:The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Main Author: Kaufmann, V.
Format: Article in Journal/Newspaper
Language:English
Published: ISPRS 2012
Subjects:
Ice
Online Access:https://doi.org/10.5194/isprsarchives-XXXIX-B5-517-2012
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spelling ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00025032 2023-05-15T16:37:55+02:00 DETECTION AND QUANTIFICATION OF ROCK GLACIER CREEP USING HIGH-RESOLUTION ORTHOIMAGES OF VIRTUAL GLOBES Kaufmann, V. 2012-07 electronic https://doi.org/10.5194/isprsarchives-XXXIX-B5-517-2012 https://noa.gwlb.de/receive/cop_mods_00025032 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024987/isprsarchives-XXXIX-B5-517-2012.pdf https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XXXIX-B5/517/2012/isprsarchives-XXXIX-B5-517-2012.pdf eng eng ISPRS ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences -- http://www.isprs.org/publications/archives.aspx -- 2194-9034 https://doi.org/10.5194/isprsarchives-XXXIX-B5-517-2012 https://noa.gwlb.de/receive/cop_mods_00025032 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024987/isprsarchives-XXXIX-B5-517-2012.pdf https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XXXIX-B5/517/2012/isprsarchives-XXXIX-B5-517-2012.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2012 ftnonlinearchiv https://doi.org/10.5194/isprsarchives-XXXIX-B5-517-2012 2022-02-08T22:49:53Z Rock glaciers are creep phenomena of mountain permafrost and are composed of ice and rocks. Active rock glaciers move downslope by force of gravity. Maximum creep/flow velocities of individual rock glaciers may vary from a few centimeters up to several meters per year, depending on the underlying terrain, mechanical parameters of the material involved, etc. Inter-annual variation of rock glacier flow has been observed and attributed to various reasons, e.g., climate change. It is believed that the observed warming of the atmosphere accelerates rock glacier flow. This paper proposes a method for detecting active rock glaciers and, where applicable, quantifying their movement relatively or absolutely using multi-temporal image data (i.e., high-resolution orthoimages/orthophotos) of virtual globes, such as Google Maps and Microsoft Bing Maps. The present work was originally triggered by the task of detecting all active rock glaciers of a larger mountain region, i.e., the western part of the Schober Mountains located in the Austrian Hohe Tauern range. In support of this task the proposed method was additionally applied to two well-studied rock glaciers, i.e., Hinteres Langtalkar (eastern part of the Schober Mountains) and Äußeres Hochebenkar (Ötztal Alps, Austria). In this paper we present the results obtained from the two rock glaciers. It can be summarized that change detection and consequently the high-precision measurement of flow velocities of active rock glaciers using image data (screen shots) of virtual globes (geobrowsers) is possible. It must be admitted, however, that the proposed method has some obvious drawbacks: (a) limited availability of high-resolution image data in high mountain areas, (b) limited availability of multi-temporal image data, (c) lack of information about exact acquisition dates or source of image data, (d) lack of information about the accuracy of the image data (orthophotos), and (e) potential legal obstacles to using the image data. Article in Journal/Newspaper Ice permafrost Niedersächsisches Online-Archiv NOA The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XXXIX-B5 517 522
institution Open Polar
collection Niedersächsisches Online-Archiv NOA
op_collection_id ftnonlinearchiv
language English
topic article
Verlagsveröffentlichung
spellingShingle article
Verlagsveröffentlichung
Kaufmann, V.
DETECTION AND QUANTIFICATION OF ROCK GLACIER CREEP USING HIGH-RESOLUTION ORTHOIMAGES OF VIRTUAL GLOBES
topic_facet article
Verlagsveröffentlichung
description Rock glaciers are creep phenomena of mountain permafrost and are composed of ice and rocks. Active rock glaciers move downslope by force of gravity. Maximum creep/flow velocities of individual rock glaciers may vary from a few centimeters up to several meters per year, depending on the underlying terrain, mechanical parameters of the material involved, etc. Inter-annual variation of rock glacier flow has been observed and attributed to various reasons, e.g., climate change. It is believed that the observed warming of the atmosphere accelerates rock glacier flow. This paper proposes a method for detecting active rock glaciers and, where applicable, quantifying their movement relatively or absolutely using multi-temporal image data (i.e., high-resolution orthoimages/orthophotos) of virtual globes, such as Google Maps and Microsoft Bing Maps. The present work was originally triggered by the task of detecting all active rock glaciers of a larger mountain region, i.e., the western part of the Schober Mountains located in the Austrian Hohe Tauern range. In support of this task the proposed method was additionally applied to two well-studied rock glaciers, i.e., Hinteres Langtalkar (eastern part of the Schober Mountains) and Äußeres Hochebenkar (Ötztal Alps, Austria). In this paper we present the results obtained from the two rock glaciers. It can be summarized that change detection and consequently the high-precision measurement of flow velocities of active rock glaciers using image data (screen shots) of virtual globes (geobrowsers) is possible. It must be admitted, however, that the proposed method has some obvious drawbacks: (a) limited availability of high-resolution image data in high mountain areas, (b) limited availability of multi-temporal image data, (c) lack of information about exact acquisition dates or source of image data, (d) lack of information about the accuracy of the image data (orthophotos), and (e) potential legal obstacles to using the image data.
format Article in Journal/Newspaper
author Kaufmann, V.
author_facet Kaufmann, V.
author_sort Kaufmann, V.
title DETECTION AND QUANTIFICATION OF ROCK GLACIER CREEP USING HIGH-RESOLUTION ORTHOIMAGES OF VIRTUAL GLOBES
title_short DETECTION AND QUANTIFICATION OF ROCK GLACIER CREEP USING HIGH-RESOLUTION ORTHOIMAGES OF VIRTUAL GLOBES
title_full DETECTION AND QUANTIFICATION OF ROCK GLACIER CREEP USING HIGH-RESOLUTION ORTHOIMAGES OF VIRTUAL GLOBES
title_fullStr DETECTION AND QUANTIFICATION OF ROCK GLACIER CREEP USING HIGH-RESOLUTION ORTHOIMAGES OF VIRTUAL GLOBES
title_full_unstemmed DETECTION AND QUANTIFICATION OF ROCK GLACIER CREEP USING HIGH-RESOLUTION ORTHOIMAGES OF VIRTUAL GLOBES
title_sort detection and quantification of rock glacier creep using high-resolution orthoimages of virtual globes
publisher ISPRS
publishDate 2012
url https://doi.org/10.5194/isprsarchives-XXXIX-B5-517-2012
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https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024987/isprsarchives-XXXIX-B5-517-2012.pdf
https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XXXIX-B5/517/2012/isprsarchives-XXXIX-B5-517-2012.pdf
genre Ice
permafrost
genre_facet Ice
permafrost
op_relation ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences -- http://www.isprs.org/publications/archives.aspx -- 2194-9034
https://doi.org/10.5194/isprsarchives-XXXIX-B5-517-2012
https://noa.gwlb.de/receive/cop_mods_00025032
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024987/isprsarchives-XXXIX-B5-517-2012.pdf
https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XXXIX-B5/517/2012/isprsarchives-XXXIX-B5-517-2012.pdf
op_rights uneingeschränkt
info:eu-repo/semantics/openAccess
op_doi https://doi.org/10.5194/isprsarchives-XXXIX-B5-517-2012
container_title The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
container_volume XXXIX-B5
container_start_page 517
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